Termet Ecocondens crystal 80 User manual

INSTRUCTION MANUAL

INSTALLATION, OPERATION

AND MAINTENANCE

Gas-fired condensing

central heating boilers

SYSTEM BOILERS

ECOCONDENS CRYSTAL 80

ECOCONDENS CRYSTAL 100

DEAR CUSTOMER

Congratulations on having chosen termet product.

We offer you modern, economical and environmentally friendly product, meeting particularly high requirements of European Standards. Please read this instruction

manual carefully as the knowledge of service rules and manufacturer’s recommendations are the conditions of reliable, efficient and safe operation of the appliance.

Please keep this instruction manual for the whole operation life of the boiler.

We wish you satisfaction in using our product.

termet

IMPORTANT TIPS

•Read the instruction manual before you perform the installation and operation of the boiler.

•This instruction manual is an integral equipment of the boiler. It should be kept through the whole operation life of the boiler and carefully read. It contains all

the information and warnings for safety during installation, use and maintenance to be followed.

•The boiler is complicated appliance as it contains numerous precise mechanisms.

•Reliable operation of the boiler depends mainly on appropriate performance of systems that boiler cooperates with such as:

- gas system,

- flue gas-air system,

- central heating system,

- domestic hot water system.

•Flue gas - air installation for C type boilers should be made of separately approved and introduced on the market gas - air system. Adapters connecting the

boiler with a pipe system must have a measuring points. Flue gas –air system must meet the specifications set out in section 3.8 of this manual.

•Flue gas - air system must be tight. Leaks on the connections of flue gas pipes can result in flooding of the boiler by condensate. Manufacturer is not liable

for damage and malfunction of the boiler arising out from above mentioned reason.

•Installation of the boiler should be performed only by a qualified person1). Make sure that the installer has confirmed in writing the tightness of the

gas installation had been checked after connecting the boiler to the system.

•Boiler may be installed and operated only in a room where all building works have been completed. It is not allowed to install and operate the boiler in a room

where building works are still in progress.

•The cleanliness of air in a room where the boiler will be installed must meet the same requirements as for rooms designer for people.

•There should be installed appropriate filters on a central heating system and gas system . Filters are not included in a basic boiler equipment.

•An example of connecting a boiler to these systems is presented on fig. 3.5.1.

•All defects caused by lack of filters on central heating or gas supply will not be repaired under guarantee.

•Central heating system must be thoroughly rinsed with water, cleanliness of the heating water should be comparable to cleanliness of domestic water.

•To avoid malicious calcification process of flue gas - water heat exchanger there should be:

- proper tightness of central heating system ensured by avoiding frequent refilling it with water,

- the water hardness checked, if it exceeds 15On it should be softened by using of softeners available on the market,

- written confirmation of the analysis of water hardness ensured; in the absence of such confirmation any claim under flue gas-water heat exchanger

calcification will not be included under warranty.

•The initial start-up of the boiler as well as its repairs, adjustments and maintenance works must be performed only by AUTHORISED SERVICE COMPANY.

•The boiler must be operated only by an adult.

•Do not do any repairs and modifications by yourself.

•Do not cover any ventilation grilles.

•Do not keep in the vicinity of the boiler any containers with flammable, aggressive and corrosive liquids and other similar substances.

•Any failures that are result of operation discordant to recommendations included in this instruction manual can not be subject to warranty claims.

•Manufacturer is not responsible for any failures being the result of faults during the process of installation and inobservance the regulations and instructions

given by the manufacturer.

•Complying with recommendations given in this instruction manual ensures a long, reliable and safe operation of the boiler.

When you smell gas:

- do not use any electrical switches that could cause any spark,

- open the door and windows,

- shut down the main gas valve,

- contact your gas supplier.

In case of any failure you should:

- disconnect the boiler from a power source,

-shut down the gas supply valve,

-cut off a water supply and drain a water from the boiler and whole central heating system as well (when there is any risk of

freezing of the system),

-drain the water from the system in any case of leakage that could cause a flood ,

- contact the nearest AUTHORISED SERVICE COMPANY or the producer.

1) ‘Qualified person’, means the one that has all required technical qualifications in an area of doing all the works necessary to connect appliances to the gas mains, central heating system and flue

gas duct, accordingly to local regulations.

 
INTRODUCTION.................................................................................................................................................................................................................................................1 
BOILER DESCRIPTION ........................................................................................................................................................................................................................................1 
1. TECHNICAL SPECIFICATION ..............................................................................................................................................................................................................................1 
1.1. Technical features ........................................................................................................................................................................................................................1 
2. DESIGN AND TECHNICAL SPECIFICATIONS OF THE BOILER .........................................................................................................................................................................................1 
2.1. Main units of the boiler................................................................................................................................................................................................................1 
3. PROTECTION EQUIPMENT ................................................................................................................................................................................................................................1 
4. OPERATION DESCRIPTION ................................................................................................................................................................................................................................2 
4.1. Way of heating the water for central heating system ..................................................................................................................................................................2 
4.2. Temperature regulation dependent on outside temperature......................................................................................................................................................2 
4.3. The way of heating the water in the monofunctional boiler cooperating with domestic water tank (option). ...........................................................................2 
5 DESCRIPTION OF THE CONTROL PANEL .................................................................................................................................................................................................................3 
BOILER INSTALLATION.......................................................................................................................................................................................................................................3 
1. REQUIREMENTS OF BOILER INSTALLATION ...........................................................................................................................................................................................................4 
1.1. The regulations on the water installation, gas and the flue gas system .......................................................................................................................................4 
1.2. Regulations related to the room ..................................................................................................................................................................................................4 
1.3. Requirements for electrical installation.......................................................................................................................................................................................4 
2. PRELIMINARY CHECK ACTIVITIES ........................................................................................................................................................................................................................4 
3. BOILER INSTALLATION.....................................................................................................................................................................................................................................4 
4. CONNECTION TO THE GAS INSTALLATION.............................................................................................................................................................................................................6 
5. CONNECTION OF THE BOILER TO A WATER SYSTEM ................................................................................................................................................................................................6 
5.2. Cleaning the installation and water treatment for filling the CH installation................................................................................................................................6 
6. SELECTION OF EXPANSION VESSEL......................................................................................................................................................................................................................7 
7. CONDENSATE OUTLET.....................................................................................................................................................................................................................................7 
8. FLUE GAS OUTLET ..........................................................................................................................................................................................................................................7 
8.1. Configuration Type B with open chamber and forced draft .........................................................................................................................................................7 
8.3. Maximum length of the air-flue system........................................................................................................................................................................................8 
8.4. Horizontal outlet of air- flue gas system through the wall............................................................................................................................................................8 
8.5. Vertical outlet of air- flue gas system through the roof................................................................................................................................................................8 
8.6. Connection to the existing flue gas duct.......................................................................................................................................................................................8 
9. CONNECTION OF ADDITIONAL DEVICES ...............................................................................................................................................................................................................8 
9.1. Description of connection terminals ............................................................................................................................................................................................9 
9.2. Connection of a room temperature regulator..............................................................................................................................................................................9 
9.3. Connecting the outdoor temperature sensor...............................................................................................................................................................................9 
9.4. Connecting the hot water tank to the system boiler....................................................................................................................................................................9 
9.5. Connecting the solar system ......................................................................................................................................................................................................10 
9.6. Connecting the boilers in the cascade system............................................................................................................................................................................10 
BOILER ADJUSTMENT AND PRELIMINARY SETTING........................................................................................................................................................................................10 
1. INTRODUCTORY REMARKS..............................................................................................................................................................................................................................10 
2. ADJUSTING THE BOILER TO COMBUST ANOTHER TYPE OF GAS.................................................................................................................................................................................11 
BOILER CAN BE ADJUSTED TO COMBUST ANOTHER TYPE OF GAS BUT ONLY FOR THIS ONE WHICH THE BOILER IS CERTIFIED FOR.THE TYPES OF GASES ARE GIVEN ON THE RATING PLATE -IN THE INDEX 
DESIGNATION: ...................................................................................................................................................................................................................................................11 
3. Boiler setting –regulation of CO2value.........................................................................................................................................................................................11 
4. ADJUSTMENT OF HEATING AND DOMESTIC WATER POWER....................................................................................................................................................................................12 
5. CONTROLLER CONFIGURATION –SETTING OF BOILER PARAMETERS .........................................................................................................................................................................12 
5.1. Preview of parameters value......................................................................................................................................................................................................12 
STARTUP AND OPERATION OF THE BOILER.....................................................................................................................................................................................................13 
1. INITIAL STARTUP OF THE BOILER ......................................................................................................................................................................................................................13 
2. OPERATING MODES......................................................................................................................................................................................................................................13 
3. SETTINGS...................................................................................................................................................................................................................................................14 
3.1. Change the setting of heating water ..........................................................................................................................................................................................14 
3.2. Change the setting of domestic water........................................................................................................................................................................................14 
3.3. Switching the SUMMER / WINTER mode....................................................................................................................................................................................14 
3.4. Turn off the heating of domestic water......................................................................................................................................................................................14 
3.5. Stand-by mode...........................................................................................................................................................................................................................14 
4. DIAGNOSIS.................................................................................................................................................................................................................................................14 
4.1. Errors history..............................................................................................................................................................................................................................15 
5. ANTIFREEZE FUNCTION .................................................................................................................................................................................................................................15 
6. FUNCTION TO PREVENT BLOCKAGE OF PUMP AND THREE-WAY VALVE ......................................................................................................................................................................15 
7. BREAK IN OPERATION OF THE BOILER................................................................................................................................................................................................................15 
MAINTENANCE, INSPECTIONS, CHECKING OF THE OPERATION ......................................................................................................................................................................16 
1. INSPECTION AND MAINTENANCE .....................................................................................................................................................................................................................16 
1.1. Preparing the boiler for service..................................................................................................................................................................................................16 
1.2. Maintenance of the combustion chamber, burner, ignition electrode and ionization electrode ...............................................................................................16 
1.3. Thermal protection of the heat exchanger.................................................................................................................................................................................17 
1.4. Cleaning the condensate siphon.................................................................................................................................................................................................17 
2. REPLACING A DAMAGED CONTROL BOARD IN THE CONTROL PANEL..........................................................................................................................................................................17 
2.1. Replacing the fuse in the controller............................................................................................................................................................................................17 
3. THE MAINTENANCE OPERATIONS TO BE PERFORMED BY USER ................................................................................................................................................................................18 
4. PUMP CHARACTERISTIC.................................................................................................................................................................................................................................18 
5. PARAMETERS OF BOILER COMPONENTS ............................................................................................................................................................................................................19 
CASCADE SYSTEM............................................................................................................................................................................................................................................20 
1. AUTODETECTION .........................................................................................................................................................................................................................................20 
2. CASCADE OPERATION MODE ..........................................................................................................................................................................................................................20 
2.1. TEST mode for cascade...............................................................................................................................................................................................................20 
2.2. Cascade operation in CH mode ..................................................................................................................................................................................................20 
2.3. Cascade operation in DHW mode...............................................................................................................................................................................................20 
3. ALGORITHM OF CASCADE OPERATION...............................................................................................................................................................................................................21 
TECHNICAL DATA ................................................................................................................................................................................................................................................22 

ISU-689:2016/GB

1. INTRODUCTION

In this instruction manual is described condensing gas system boiler

ECOCONDENS CRYSTAL designed for supplying a central heating

system and heating domestic water in separately connected a

domestic water tank.

Adaptation of the following boiler to work with the tank

needs to be made by AUTHORISED SERVICE COMPANY.

ECOCONDENS CRYSTAL boiler take the air for combustion process

from outside the room (in which combustion circuit is sealed) with

respect to the residential area of the building in which it is installed -

type of installation: C13, C33, C43, C63 or take the air for combustion

process from the room that meets appropriate conditions (required

by law) - type of installation: B23 .

Further information regarding the type –according section 3.8 or PN-

EN 15502 Standard.

2. BOILER DESCRIPTION

2.1. Technical specification

2.1.1. Technical features

•Electronic fluent flame modulation for central heating system and

domestic hot water (option);

•Electronic ignition with ionization flame control;

•Adjustable boiler power;

•Regulation of heating water and domestic water temperature

(option);

•Function of soft ignition;

•Inlet gas pressure stabilization;

•Adopted to cooperate with closed circuit in central heating system

•Integrated boiler cascade operation

2.2. Design and technical specifications of the boiler

2.2.1. Main units of the boiler

2.1 –Flue gas-water heat exchanger

2.2 –Temperature limiter of flue gas

2.3 –Temperature limiter of air collector

2.4 –Ignitron electrode

2.5 –Flame control electrode

2.6 –Control console

2.7 –Controller

2.8 –Pressure transducer

2.9 –Safety valve

2.10 –Condensate siphon

2.11 –Fan

2.12 –Spark generator

2.13 –Automatic air vent

2.14 –NTC temperature sensor - return

2.15 –NTC temperature sensor - supply

2.16 –Temperature limiter 95°C

2.17 –Flow sensor

2.18 –Circulation pump PWM

2.19 –Gas valve

2.20 –Mixing orifice

2.21 –Flue gas adapter DN100

2.22 –Air adapter DN100

2.23 –Drain valve

2.3. Protection equipment

•Protection against outflow of gas

•Protection against explosive switch on of the gas

•Protection against exceeding the max temperature in domestic

hot water tank

•Protection against exceeding the upper limit of heating water

temperature

•Protection against water pressure increase (1-st degree) -

electronic

•Protection against water pressure increase (2-nd degree) -

mechanical

•Protection against drop of water pressure

•Protection against water overheating

•Antifreeze protection of the boiler

•Protection against the pump blockade

•Monitoring of the correct operation of the fan

•Protection against exceeding the upper limit temperature of flue

gas

•Protection against too small flow through the heat exchanger

•Protection against overheating the exchanger due to incorrect

installation

Fig. 2.2.1.1 –Boiler's construction

ISU-689:2016/GB

Errors which do not require manual reset will cause return of the

boiler to the normal operation after automatic disappearance of

failure - see section 5.4 - boiler diagnostics.

In case of noticing repeated emergency boiler shut-

down by any of the protection it is necessary to contact

an Authorized Service Company in order to check the

reason of boiler switching off and to repair it.

It is forbidden to make any unauthorized modifications

in the protection system.

IT IS RECOMMENDED TO CARRY OUT A CONTROL BY

AUTHORIZED SERVICE PROVIDED AT LEAST ONCE PER

YEAR. REPLACEMENT OF COMPONENTS IS ALLOWED

ONLY ON ORIGINAL SPARE PARTS.

•HYDRAULIC COUPLING

In order to ensure a proper operation of the boiler, without any

problems of too small flows (e.g. caused by radiators off or various

types of pollution), it is recommended to install a hydraulic coupling

or alternatively a plate heat exchanger that separates the boiler's

hydraulic circuit from the installation.

The choice of separation method is dictated by the type of

installation only.

•PLATE EXCHANGER

In case of replacing a traditional boiler, and an old and contaminated

system, you may encounter problems with thorough cleaning of the

system. In order to avoid contamination of the internal boiler system

and, as a result of its malfunctioning, it is recommended to install an

indirect heat exchanger. An additional exchanger between the

primary and secondary circuits ensures effective separation of the

system and, as a consequence, full protection of the boiler against

contamination.

2.4. Operation description

2.4.1. Way of heating the water for central heating system

The boiler switches on if the heating water temperature is lower than

the temperature set by buttons [E] or [D] and the room thermostat

gives the signal to heat. Then the following conditions occur

simultaneously:

•power supply of the three-way valve towards the central heating

installation,

•power supply of the pump (item. 2.18). If the heating water flow

through the boiler is ≥ 19 l/min, a short-circuit of flow sensor

contacts occurs (item. 2.17),

•power supply of the fan (item 2.11),

•followed by a sequence of ignition and the fan speed is set to

ignition value [parameter P33],

•then the boiler reduces the power by changing the fan speed to the

minimum value [Parameter P12] and maintains it until the

minimum operating time [Parameter P05] has expired. After that

the controller starts the fan speed regulation taking into account a

value of the central heating slope [parameter P06]. If the heating

water temperature exceeds 97°C, an additional temperature limiter

is activated, the burner is turned off until the hot water

temperature drops below 81°C.

The system of continuous flame modulation uses the PI control

algorithm to minimize the difference between the temperature read

by the NTC sensor - supply (item 2.15) and the value of the set

temperature of central heating. The boiler switches off when the

room temperature control unit is signalizing reaching the desired

temperature in the room or when the heating water temperature

exceeds the setpoint by the hysteresis value of central heating

[parameter P03].

After turning off the boiler pump is running during the pump overrun

[parameter P07]. Simultaneously the time of break in operation is

metered [parameter P04].

Restart of the boiler will be done automatically under the following

conditions simultaneously:

• heating water temperature is lower than the set temperature,

• break time in the central heating operation has elapsed [parameter

P04],

• room temperature control unit provides the signal "heat".

The list of driver parameters according to table 4.5.1.

2.4.2. Temperature regulation dependent on outside

temperature

If an external temperature sensor has been connected the controller

detects it automatically and it is signalized by displaying W10 on the

control console display.

If the “K number” (parameter P14) is set to the value different than

zero there is a possibility to manually set the CH temperature with

buttons on control console. Controller enters a weather function and

adjusts the heating water temperature making it dependent on

outside temperature, the number of heating curve [parameter P14]

and its shift [parameter P15]. Max temperature is limited by max CH

setting [parameter P02].

Calculated temperature of CH water

Outside temperature

Heating curve shift = 20°C

Calculated temperature of CH water

Outside temperature

Heating curve shift = 30°C

2.4.3. The way of heating the water in the monofunctional

boiler cooperating with domestic water tank (option).

The boiler may cooperate with domestic water tank type ZWU-200/N

which is offered by Termet company. Adjustment and display of

domestic water temperature are done on the controller of the boiler.

Adjusting the boiler to cooperate with the tank see section 3.9.4.

The process of heating the domestic water is as follows:

When the water temperature sensor finds the temperature lower by

the hysteresis value of domestic water [parameter P18] than set on

the control panel with buttons [G] or [F] then the process of

pumping the water to the central heating system will be stopped and

the heating water temperature will be controlled in an optimal way

ISU-689:2016/GB

by the driver of the boiler. Heating the domestic water with the

boiler cooperation with the tank of domestic water is as follows:

•water temperature sensor in the tank indicates the water

temperature drop below the set temperature by the hysteresis

value of domestic water [parameter P18] (e.g. due to opening of

inlet tap valve);

•boiler control unit makes the three-way valve to draw the heating

water to a short circuit while giving a signal to the spark generator

and gas valve;

•heating water flows through the coil of tank (short circuit);

•driver of the boiler controls the heating water temperature in an

optimal way so as not to exceed a permissible value. If the heating

water temperature exceeds 97°C, an additional temperature limiter

is activated (item 2.16), the burner is turned off until the hot water

temperature drops below 81°C;

•after exceeding the set water temperature in the tank the boiler

controller gets distorted the three-way valve for long circuit and at

fulfillment of the following conditions the heating water is pumped

into the central heating system:

-heating water temperature is lower than the set temperature

-room thermostat gives a signal “heat”.

Hot water temperature at the point of consumption may differ from

the set value, and therefore it is advisable to install a mixing valve for

domestic hot water systems.

When using a water tank in the ECOCONDENS CRYSTAL

100 boiler , to ensure proper operation of the boiler the

required coil power in the tank is minimum 25kW.

To eradicate legionella bacteria in the tray, the boiler is

turned on every 168h to work with the tank and heats

water to 60°C. To prevent excessive energy

consumption, the timing function is reset when the

water temperature in tank will reach 60°C during

normal use.

2.5 Description of the control panel

The boiler control panel has 7 function buttons and an LCD display

for displaying boiler settings and information about operating states

of the boiler.

Fig. 2.5.1 –Description of control panel buttons

Description of the basic functions of the individual buttons of the

controller:

[A] –Changes the operating state of the boiler from the SUMMER

function (CH only) to the WINTER function (CH and DHW).

[A]3sec –The entrance to the TEST mode

[B] –The reset the displayed error

[B]3sec –Preview of the parameters

[C] –Turns on or off the DHW heating function

[C]3sec –Errors history

[D] –Reduces the setting for CH

[D]3sec –Autodetection procedure

[E] –Increases the setting for CH

[E]3sec –sends parameters from the controller in MASTER boiler to all

boilers connected in series.

[F] –Reduces the setting for DHW

[G] –Increases setting for DHW

[A+C]3sec –Standby mode

[A+B]3sec –Test for the cascade mode

[B+C]3sec –Controller programming mode

Fig. 2.5.2 –Description of the display symbols

W1 –Operation in CH mode

W2 –Function of operation only in DHW mode (SUMMER), CH

inactive

W3 –Signalization of the pump power

W4 –Signalization the fault requiring reset

W5 –Signalization of the flame presence

W6 –Inactive domestic water function

W7 –Operation in DHW mode

W8 –Unit of displayed pressure

W9 –Unit of displayed temperature

W10 –Active outdoor temperature sensor

W11 –Standby mode

W12 –Signalization the mode of changing the parameters

W13 –Inactive

W14 –Inactive

W15 –Signalization the mode of previewing the parameter

W16 –Presence of connected OpenTherm

W17 –Information display field

3. BOILER INSTALLATION

Important safety information

FAUILER TO COMPLY WITH LISTED RECOMMENDATION WILL

RESULT IN LOSS OF THE WARRANTY

- The boiler must be installed by an authorized service company

accordingly with local regulations;

- After the boiler installation check the tightness of all connections of

gas and water systems;

- Service company is responsible for the proper installation of the

boiler;

- Installation of the boiler must be made so as not to cause any

tension of the installation that may cause increased volume of work;

- Packages should not be left within reach of children;

- Check whether the chimney is perfectly clean and free of dirt;

- The boiler must be connected to the heating system corresponding

to its power;

- Check whether the boiler is adapted to burn a certain type of gas;

- Check the water hardness, if it exceeds 20  F (1F = 10 mg calcium

carbonate per liter of water) proceed to the water softening;

- It is mandatory to thoroughly clean all installation wires in order to

eliminate possible residues from threading, welding, solvents or

sludge and any other contaminants from the heating circuit.

ISU-689:2016/GB

3.1. Requirements of boiler installation

3.1.1. The regulations on the water installation, gas and the

flue gas system

Water, gas and flue gas systems must meet local regulations as well

as use of the gas, ventilation and flue gas installation.

The use of gas appliances, flues and ventilation by the user should be

consistent with local requirements on technical conditions of tenant

buildings use.

Before installing the boiler the consent from the District Department

of Gas, Chimney sweep company and Building administration must

be obtained.

3.1.2. Regulations related to the room

Requirements for premises where gas appliances are installed shall

be in accordance with local regulations. The room where appliance is

to be installed should ensure the air supply and venting system

necessary for gas combustion in accordance with local regulations.

The room should be protected against freezing, free from dust and

aggressive gases. It is forbidden to install the device in a laundry

rooms, drying rooms and in varnish, cleaners, solvents and sprays

storages.

The boiler should be installed in a technical room.

Gas appliances supplied with liquefied gas must not be

installed in room with a floor below ground level.

3.1.3. Requirements for electrical installation

The boiler has been designed for operation with single-phase

alternating current with rated voltage of 230 V / 50 Hz. Max power

consumption –please see rating plate or technical data table. The

main socket from which boiler is powered must meet the local

requirements.

The boiler has been designed as a Class I device and must be

connected to an electrical outlet with ground terminal in accordance

with PN IEC 60364-4-41. The boiler has a degree of electrical

protection provided by the housing –X4D.

It should be checked by a suitably qualified person whether the

electrical installation is suitable for the maximum power

consumption of the device, making sure in particular that the cross-

section of the cables is suitable for the power consumed by the

device.

If the boiler is permanently connected to the power source, it should

be execute by junction box. The junction box must be equipped with

protection degree appropriate for the defined assembly zone. If the

boiler is connected through the junction box, electric system must be

equipped with measures which can disconnecting the boiler from the

power source.

In order to connect the boiler to the junction box, it is recommended

to:

- cut the power cord to a suitable length for connection to the box

- pull off cable insulation

- put the cable-end sleeve with the appropriate diameter

This prepared cables connect according to Fig 3.1.3.1.

Fig 3.1.3.1 –Wire colors: L –brown; N –blue; PE –yellow-green

If you need to replace the supply wire, use a minimum cord of 3 x

0.75 mm2. The boiler supply wire is screwed to the connection list on

the control panel to terminals marked with ~ 230 V (see section

3.9.1).

The power cord of the device cannot be replaced by the user. To

replace it please contact with qualified personnel.

The use of any device powered by electricity requires to compliance

with the basic principles, i.e.:

•do not touch the device with wet or damp body parts and / or

being barefoot;

•do not jerk the electrical cables;

•do not expose the device to weather conditions (rain, sun, etc.);

•do not allow children or persons with no experience or knowledge

to operate the device.

3.2. Preliminary check activities

Before proceeding with the boiler installation:

•check whether the boiler is factory designed for the type of gas

supplied from the gas system. The type of gas which the boiler is

adjusted to is specified on the rating plate on the cover of the

boiler;

•check whether the water system and radiators have been rinsed

with water in order to remove rust, fillings scale, sand and other

dusts that could disturb the proper operation of the boiler (for

example increase the water flow resistance in central heating

system) or to pollute the heat exchanger,

•whether the mains voltage has a value of 230V and the phase wire

(L) is in the right place; and that the socket has an efficient safety

contact (complies with IEC-60 364-6-61: 2000)

•whether the flue-gas air installation is tightly connected and not

obstructed.

3.3. Boiler installation

The device may only be installed on a vertical wall

sufficiently strong to maintain its weight. For mounting,

use a fastening system adapted to the wall structure.

- The most important mounting dimensions are shown on Fig. 3.3.1

- In order to ensure free access during inspections and maintenance,

it is advisable to maintain the minimum distances according to

Fig. 3.3.3.

Delivery range:

Part

Quantity

Gas boiler

Instruction manual

Mounting template

Hanger

Wall plugs Φ12x60

Wood screws Φ8x70

Elements of the siphon

(bucket, nut, gasket)

Flue gas / air adapter

Package with screws

Wire of cascade serial connection

NTC temperature sensor (cascade)

The boiler has two mounting possibilities presented on Fig. 3.3.2

- Using the attached hanger

- Hanging on mounting hooks (min. size of wall plug is ø16x100)

Mounting method:

1. In order to facilitate assembly, use the mounting template

attached to the boiler.

2. Attach the template to the wall and mark all the space needed for

installation.

3. Remove the template and drill the necessary mounting holes.

4. Screw the hanger (attached to the boiler) to the wall or mount the

hooks.

Power wire

the device

Wire of

electric

system

ISU-689:2016/GB

5. Hang the boiler on the hanger, grabbing the back and bottom of

the boiler. Due to the heavy weight, 2 people are required.

Fig. 3.3.1 –Mounting dimensions

Mounting method on hooks

Mounting method with hanger

Fig. 3.3.2 –Mounting method

Fig. 3.3.3 –Required mounting distances

A = 400mm

B = 300mm

C = 200mm

ISU-689:2016/GB

3.4. Connection to the gas installation

All connections should be made by an appropriately

qualified person, in accordance with applicable standards

and regulations, in particular those relating to safety.

Connect a gas supply pipe directly to the connector of the boiler gas

unit by means of standard connector subassembly. It is necessary to

install a gas filter on the gas supply pipe. This filter is not included in

the standard boiler equipment. The gas filter is necessary for a

proper operation of a gas unit and a burner. Install a cut-off valve on

the gas pipe in an accessible place.

A - (G5/4”)–Power supply of the CH

installation

B –(G5/4”) –return from the CH

installation

C –(G1”) –Gas connection

D –(G3/4”) - Drain from the safety

valve / emptying the boiler

E –(Ø25) - Condensate drain

Fig. 3.4.1 –Description of the connectors

3.5. Connection of the boiler to a water system

Power connector and connector of return of the central heating

boiler should be screwed to the installation. Install a water filter on a

water return from central heating system (in front of the connection

with the pump). The filter is not included in standard boiler

equipment. The central heating system should be thoroughly rinsed

out before the boiler is connected. In the central heating system it is

permitted to use as a heat carrier any antifreeze fluids which can be

used in central heating systems.

The cut-off valves needs to be installed between the boiler and

central heating system so that the boiler could be dismounted

without draining the system.

Before installing the boiler thoroughly flush the central

heating system to free it from any solid impurities.

It is recommended that after first start-up of the boiler

and heating up of the installation drain the water from

the system to remove residues of pastes metallurgical

and precautionary measures of heaters. These activities

would benefit for the operation of the device, its

parameters and components life.

Fig. 3.5.1 –Installation requirements

KW –Exhaust ventilation, KN –Air inlet, 3W –three-way valve, TS –Tank temp.

sensor, KS –Floor drain, FW –Water filter, FS –gas filter.

After the boiler installation it is necessary to:

•Fill the heating system with water. Filling the system should be

done slowly to allow the air outflow through the air vent valve

mounted in the boiler; also check the complete air outlet from all

components of the system. The pressure in the cold installation

should be 1.2 ÷ 1.5 bar.

•Check whether connections of the boiler and in the central heating

system are tight.

•Ensure that pipes of water and heating installation are not used as

grounding the electrical installation.

•Connect the outlet of safety valves to the floor drain to avoid

flooding the room (where the boiler is installed) as a result of

protection devices. Such outlets should be carried out so as to

avoid damage in the case of opening of the valve and outflowing of

the hot fluid.

3.5.2. Cleaning the installation and water treatment for

filling the CH installation

In all elements of the CH installation there are processes of scaling,

corrosion and similar phenomena. The boiler is the most expensive

part of the installation and it is important to ensure that the heat

exchanger and other components are protected against these

processes. Correct preparation of the CH system for the operation

shall be carried out by two operation: cleaning the installation and

water treatment for the operation of the installation.

Cleaning the installation

In new installation there may be remnants of the installation such as

solder residues, welding residues, flux residues, oil residues, grease

residues, or corrosion products - especially in old installation. In the

first place, both new and old installations should be cleaned with

clean water to remove solid waste. his operation must be carried out

without the boiler installed. The next step is to chemical cleaning the

installation. For cleaning new and old installations, use a suitable

cleaning agent, like Fernox Cleaner F3 (for old and heavily

contaminated installations use Cleaner F5). After this cleaning the

system should be rinsed with mains water.

Water treatment for filling the installation

Use the water with following parameters to fill the installation: pH

from 6,5 to 8,5 units, general hardness not more than 10 °n (~ 18°F).

For filling do not use demineralized water or distilled water. For

proper protection against scale and corrosion of the installation, use

a suitable inhibitor (passivator) e.g. Fernox Protector F1. In addition,

there can also be used a liquid heat carrier such as HP-5 or antifreeze

such as Fernox Alphi 11. In situations where water is very hard, the

use of the HP-5 liquid heat carrier effectively reduces the risk of

scaling of the heat exchanger.

Low-temperature circuits

In low-temperature zones it is recommended to treat the water by

using HP-5 liquid heat carrier or alternatively Fernox biocide AF10.

Filtering technology

In addition, modern filters with magnetic and cyclone effects are

recommended for the high quality of the current heating system.

The method and amount of use of the particular products for

cleaning the installation and for water treatment should be used

according to the instructions of the product given by the

manufacturer.

Cleaning the installation and water treatment should be made by

authorized installers or service personnel.

ISU-689:2016/GB

3.6. Selection of expansion vessel

The boiler is not equipped with an expansion vessel, the vessel must

be mounted on the installation. In installation with additional

hydraulic coupling or plate heat exchanger, an individual expansion

vessel should be installed in the boiler’s circuit. A proper expansion

vessel should be selected by the designer of central heating system.

Installation of expansion vessel should be made by an installation

contractor in accordance with applicable regulations.

3.7. Condensate outlet

Each boiler has a condensate drainage system installed and already

connected.

The flexible pipe for condensate drainage must be connected to the

condensate collection and removal system in accordance with the

applicable regulations. The designer, considering the power of the

installation and the utility of the building, should adapt the system to

neutralization of the resulting condensate. The condensate drain

installation must be made of corrosion-resistant material.

The installation should be carried out in a way that prevents the

condensate from freezing. Check the condensate drain before

starting. The connection of drain the condensation water cannot be

blocked.

The bottom of the siphon (2) was dismantled during transport. All

parts necessary for installation: 1-gasket, 2-bottom of siphon, 3-nut,

are in the package of the boiler. Before starting the boiler, the siphon

should be assembled in accordance with Fig. 3.7.1.

Fig. 3.7.1 –Mounting the siphon

Before the start-up of the boiler move the siphon to the

lowest position, to enable the hose (which connect heat

exchanger with siphon) to a proper condensate outlet

(see the Fig. below). A bent hose may cause the flooding of

heat exchanger by produced condensate.

During the start-up or after a long downtime, make sure that the

condensate is properly drained through the drain (E) see Fig 3.4.1.

3.8. Flue gas outlet

Flue gas outlet from the boiler must be made in accordance with

applicable regulations and this instruction manual and it needs to be

agreed with the district chimney sweep service company.

For flue systems, the boiler is made according to type: C13, C33, C43,

C63, B23.

•it has closed combustion chamber in relation to the room where it

is installed (C),

•is adjusted to be connected to separately approved and marketed

air-flue gas systems,

•it is equipped with a blowing fan (3).

The boiler is designed for cooperation with the flue gas –air system

with a diameter of Φ100 (flue gas and air) and in a collective

cascade system where the flue gas exhaust from a single boiler is

realized by a pipe with diameter of Φ100. To install the flue gas –air

system to the boiler, it is recommended to mount the flue gas

adapters according to this manual, the adapters are supplied with

the boiler and are added to the boiler’s package.

Other components of the flue gas –air system of the boiler should be

purchased according to the design of the installation.

The boiler is factory adjusted with mounted exhaust

pipe Φ100 of the maximum length 0,5m without air

pipe. Settings CO2–9% for natural gas. To use the other

systems and longer pipes it is required to adjust the

boiler as specified in point 4.3.

Connections and chimney duct must be designed and constructed in

accordance with applicable regulations. They must be made of

suitable material. They also must be corrosion-resistant, smooth

inside and tight, impervious to condensate.

Use the appropriate wire size (diameter, maximum length, resistance

on the knees), depending on the combustion system used. The

dimensions of the wires should be adequately compatible as given in

table. Resistance of flue gas flow on each elbow depending on the

bending angle and related reduction of the maximum wire length are

given in section 3.8.2.

Connection of the boiler to the air-flue gas system and installation of

the system itself should be sealed. Each system should be installed

with the windproof outlet protecting against external factors.

Before turning on the boiler check if flue-gas system is made

according to the project and air- and flue ducts lengths are shorter

than maximum lengths showed in above tables. Make sure flue-gas

system is tight.

After turning on the boiler check if it operates correctly. Also check

combustion parameters by checking concentration of CO2and/or O2

in flue-gas.

3.8.1. Configuration Type B with open chamber and forced

draft

The air is sucked directly from the environment in which the boiler is

installed through the hole made in the boiler’s top cover. The

exhaust outlet should be connected to your own single chimney or

directed directly to the outside of the building according to the

requirements of applicable regulations.

Boilers with open combustion chamber type B can not be installed in

rooms exposed to vapors or volatile substances (e.g. vapors of acids,

paints, adhesives, solvents, fuels, etc.), as well as areas dusty with

wood, coal, cement, etc.

ISU-689:2016/GB

In the operating system type B, the boiler must be equipped only

with a flue gas adapter as shown on Fig. 3.8.1.1. The air is sucked

from the room through the hole in the boiler’s top cover.

Fig. 3.8.1.1 –Adjusting the boiler for operation in system B23

3.8.2. Configuration Type B with closed chamber and forced

draft

The air is sucked from the outside through an individual air duct.

In case of using a separate flue gas-air system, the boiler should be

equipped with the appropriate adapters according to Fig. 3.8.2.1.

Fig. 3.8.2.1 –Mounting the flue gas adapter and the separate air system

Name

Attached to the boiler

Quantity

Adapter ø100

Yes

Flat gasket

Yes

Sheet screw

Yes

3.8.3. Maximum length of the air-flue system

The maximum length of the flue pipe for a boiler that

co-operates with flue gas and air pipes with diameter of

Φ100 is: LMAX = 30m.

The following table shows the values which have to be added to the

sum of the lengths of the flue gas-air system when the elbow is

mounted on the flue gas system or the air supply system to the

boiler.

Table 3.8.3.1 - Reduce the length of the installation elbows

Example of calculation of flue gas system length:

LMAX ≥ H1 + H2 + K90 x 1m+K45 x 0.5m

LMAX - declared maximum length of the flue gas pipe

H1- sum of straight pipe lengths in the flue gas system

H2- sum of pipe lengths in the air system

K90 - quantity of used 90 ° elbows in the flue gas and air system

K45 - quantity of used 45 ° elbows in the flue gas and air system

3.8.4. Horizontal outlet of air- flue gas system through the

wall

Fig. 3.8.4.1 –Horizontal outlet of air- flue gas system through the

wall

The horizontal air tube should be mounted at an angle of

~ 3 ° so that rain water that gets into the pipes would not

flood the boiler and flowed outside the building.

3.8.5. Vertical outlet of air- flue gas system through the roof

Fig. 3.8.5.1 –Horizontal outlet of air- flue as system through the wall or on

the roof

3.8.6. Connection to the existing flue gas duct

Fig. 3.8.6.1 –Connection to the existing flue gas outlet duct

Elbow 15°

Elbow 45°

Elbow 90°

0.25

0.5

ISU-689:2016/GB

3.9. Connection of additional devices

An improperly made electrical connection may

Cause injury or material losses.

Touching live connections may cause electric shock and

as a consequence, it may cause a serious injury.

Remember to disconnect the boiler electrical power

before starting work.

Electrical connections may only be carried out by an

appropriately qualified person.

The boiler is equipped with additional electrical terminals, which

allow for connection of external devices to the boiler:

•Room regulator

•Remote control OpenTherm®

•Outdoor temperature sensor

•Three-way valve for connecting the domestic hot water

•Temperature sensor in domestic hot water tank

•Cascade sensor (temperature measurement on hydraulic coupling)

•PWM signal cable for external pump

•Power supply of the solar pump

•Solar sensor (temperature measurement in solar collector)

•Alarm (relay which close the contact in case of error)

To access the terminals (see Fig. 3.9.1):

- remove the front cover of the boiler see Fig. 6.1.1.1

- unscrew 2 screws (1)

- move the control panel (2)

- after unscrewing the screws (3) and removing the cover (4) we get

access to terminals.

During the connection, wires of the additional devices should be

passed through the appropriate holes in the controller bracket (6)

and the proper culvert (5), then screw the ends of the wires to the

correct terminals.

Fig. 3.9.1 –Access to electrical terminals

3.9.1. Description of connection terminals

High-voltage terminals:

~230 –power cord

ALARM –in case of an error the contact is closed

CH, DHW, COM –connection terminals of a three-way valve

SOLAR PUMP –solar pump

Low-voltage terminals:

RT –room temperature regulator

OT –remote control OpenTherm®

EXTERNAL SENSOR –outdoor temperature sensor

TANK SENSOR –temperature sensor in tank

CASC. SENSOR –cascade sensor

CASC. PWM –PWM signal for external pump

SOLAR SENSOR –solar sensor

MASTER –master connector of series connection of boilers into

cascade

SLAVE –slave connector of series connection of boilers into cascade /

diagnostic connector of the boiler –connection with PC

MASTER and SLAVE communication connectors are not

located in the control console casing. Connectors

appropriately described are located in bulk inside the

boiler.

Fig. 3.9.1.1 –Description of electrical terminals

3.9.2. Connection of a room temperature regulator

3.9.2.1. Room regulator with contact

The boiler has been designed to cooperate with a room temperature

regulator which has got its own supply source and control contact

free from potential. Connections must be made according to the

instructions of regulator manufacturer. In order to connect the

temperature thermostat to the boiler the appropriate length two-

core wire is needed. It needs to be connected to terminals 1 and 2

marked as RT - previously separating the electrical bridge.

3.9.2.2. OpenTherm®remote control by Honeywell

The boiler is also adapted to connect the OpenTherm® remote

control by Honeywell. In order to connect the OpenTherm® to the

boiler the appropriate length two-core cable is needed. It needs to

be connected to terminals 3 and 4 marked as OT. For any technical

information about the remote control OpenTherm® - see the

instruction manual supplied by the manufacturer of remote control

devices.

Note: When using OpenTherm® remote control, the RT terminals

must be free of electrical bridge and left unconnected.

3.9.3. Connecting the outdoor temperature sensor

To connect the outdoor temperature sensor use the 2 wire cable

with 0,5mm2cross section and connect it to terminals 5 and 6

OUTDOOR SENSOR. Connection must be made in accordance with

the instructions provided by the sensor manufacturer. It is the best

to place the outside temperature sensor on the north wall of the

building and it should not be exposed to direct sunlight.

3.9.4. Connecting the hot water tank to the system boiler

Domestic hot water tank must be connected to the boiler in

accordance with the Fig.3.5.1.

Connect the temperature sensor to the terminals in the control panel

marked with TANK SENSOR (remove the resistor).

The other end of the cable together with the sensor should be placed

in the tank in the place of the domestic water temperature sensor.

The electrical connection of the three-way valve shall be made

according to Fig. 3.9.3.1.

ISU-689:2016/GB

Connect the valve connection cord (2) to the terminals in the control

panel (3) according to indications.

CH (heating) –black cord,

DHW (domestic hot water) –brown cord,

COM –blue cord.

Three-way valve and a temperature sensor in the tank are not

supplied with the boiler, they are available as optional elements.

Fig. 3.9.3.1 –Connecting of the three-way valve

3.9.5. Connecting the solar system

The boiler has the ability to control the solar system. The connections

should be made according to the Fig. 3.9.5.1.

Fig. 3.9.5.1 –Solar system

TS –Temperature sensor in tank, SP –Solar pump, ES –Outdoor temperature sensor,

SS –Temperature sensor in solar collector, 3W –three-way valve

The temperature sensor of solar collector Pt1000 (SS) must be

connected to the control panel at the terminals marked with SOLAR

SENSOR.

Connect the solar circuit pump (SP) to the control panel to the SOLAR

PUMP terminals. Connect the three-way valve (3W) and the

temperature sensor of tank (TS) according to section 3.9.4.

3.9.6. Connecting the boilers in the cascade system

Boilers have the ability to cooperate in a cascade. Up to 6 boilers can

be connected into one cascade, as shown on Fig. 3.9.6.1.

Below listed designs should be made by people who have

been authorized to do this:

- design of the flue gas outlet system and air inlet system,

- gas system design,

-hydraulic system design.

Fig. 3.9.6.1 –Cascade system

TS –Temperature sensor in tank, EP –External cascade pump, ES –Outdoor

temperature sensor, CS –Temperature sensor in supply collector, 3W –three-way

valve

Boilers cooperating in the cascade system are connected in series by

a cable attached to the boiler. The connection should be realized

according to Fig. 3.9.6.2. First boiler always functions as master boiler

MASTER, the other boilers work as subordinate boiler SLAVE.

Fig. 3.9.6.2 –Series connection of boilers

Connection of temperature sensor on cascade collector.

The sensor is used to measure the temperature of water supplying

CH circuits, it must be installed at the central collector of heating

water just behind a hydraulic coupling. Connect the sensor to the

terminals of the control panel marked with CASC. SENSOR using a

two-wire cable of cross-section 0.5 mm2for the wire.

The boiler has an additional PWM control connector for the external

circulation pump. To connect the pump, connect the two-wire pump

control cable to the CASC. PWM terminals in the control panel. For

detailed information of connecting the pump, refer to the

instructions supplied with the pump. Please see note in section 6.4.

In order to ensure a proper operation of the boilers, it is necessary to

install check valves in front of each boiler.

4. BOILER ADJUSTMENT AND PRELIMINARY SETTING

4.1. Introductory remarks

Purchased boiler is factory adjusted according parameters for the

type of gas that is provided on the rating plate and in and the

documentation of the boiler. Only AUTHORIZED FACTORY SERVICE

can do any and parameter settings of the boiler if there is any need

A- Black

B- Brown

C- Blue

ISU-689:2016/GB

to change the parameters or to adjust the boiler to another type of

gas.

4.2. Adjusting the boiler to combust another type of gas

Boiler can be adjusted to combust another type of gas but only for

this one which the boiler is certified for. The types of gases are given

on the rating plate - in the index designation:

Category II2H3B/P

Group 2 –natural gases:

2H-G20

Group 3 –liquefied gases:

3B/P-G30

If there is any necessary to adapt the boiler to work with a different

type of gas than the one to which it was originally fitted, you should:

•In the parameter programming mode, change the values of

parameter P27 - Maximum fan speed and parameter P28 -

Minimum fan speed (displayed value multiplied by 50), to the value

according to the type of gas to which we adjust the boiler shown in

Table 4.3.1;

•Start the TEST service function;

•Check the CO2content for min. power t = 0 and max. power t =

100, compare with the data in Table 4.3.1, if necessary - adjust;

•After adjustment, check settings for max. and min. gas flow;

•Turn off the TEST function;

•Seal the adjusting elements.

After adapting the boiler to combust another type of gas:

•Cross out on a rating plate the type of gas to which the boiler was

adapted by the manufacturer,

•Write down the symbol of the gas, to which the boiler has been

adjusted and the set heat load on the appropriate label that is

attached bulk to the user manual. The entry must be written legibly

and indelibly.

•Label filled in as above should be sticked on the cover near rating

plate.

Adapting the boiler to combust another type of gas can

be performed only by a qualified service team. This

operation is not included in the warranty repairs.

Fig. 4.2.1 –Gas valve by Honeywell with mixer

1–Feedback (air pressure), 2–Gas pressure behind the valve, 3–

Adjustment of maximum flow, 4 –Adjustment of minimum flow, 5–Gas

pressure before the valve

Fig. 4.2.2 –Gas valve by SIT

1–Feedback (air pressure), 2–Gas pressure behind the valve, 3–

Adjustment of maximum flow, 4 –Adjustment of minimum flow, 5–Gas

pressure before the valve

It is allowed to perform above mentioned operations if:

•the tightness of the gas system connections was checked after the

boiler installation and it was confirmed with the signature and the

stamp of the installer,

•the electrical installation was made in accordance with applicable

regulations,

•the correctness of connections between the boiler and the

chimney was checked and confirmed by a qualified chimney

service.

4.3. Boiler setting –regulation of CO2value

When the boiler was installed and properly connected, check the CO2

value (read it from the exhaust gas analyzer) and compare to the

values shown in the table, according to the type of operated gas. If

you need to adjust the device, it is necessary to make correction by

screw for maximum flow regulation marked as 3on Fig. 4.2.1 or

4.2.2.

POWER

GAS TYPE

Pressure

of supply

[mbar]

Ecocondens Crystal 100

Min. Speed

[rotation/min.]

Max. speed

[rotation/min.]

Gas flow

min./max.

[l/h]

CO2

[%]

100 kW

2E-G20

20 i 13

1200 (P28 = 24)

6000 (P27 =120)

25,5 / 181±6

9,00+0,5

3P-G31

1200 (P28 = 24)

5900 (P27 = 118)

12/ 70±3

11,0+0,5

3B/P-G30

1200 (P28 = 24)

5900 (P27 =118)

10 / 53±2

10,5+0,5

80 kW

2E-G20

20 i 13

1200 (P28 = 24)

4900 (P27 = 98)

25,5 / 145±6

9,00+0,5

3P-G31

1200 (P28 = 24)

4750 (P27 = 95)

12 / 56±3

11,0+0,5

3B/P-G30

1200 (P28 = 24)

4750 (P27 = 95)

10 / 42,5±2

10,5+0,5

Table 4.3.1 –Regulation parameters for boiler

Adjustments should be made only with replacement of the gas valve.

All adjustments must be carried out basing on the appliance technical

data.

Switching on the service function (TEST)

In order to activate the TEST function press the [A]3sec button.

The LCD display shows the symbol "t" and a value of 0..100 indicating

the boiler power (min. - max.) which can be changed using [D] and

[E] buttons –change for 1% or using [F] button –set the min. power,

using [G] button –set the max. power.

If during operation of the TEST function the temperature on the NTC

sensor of central heating exceeds 97°C the burner is turned off until

the temperature drops below 81°C

Pump during the test mode works with maximum efficiency.

Use [A]3sec button to turn off the TEST function.

Minimum power adjustment

•In the parameter programming mode, check the value of

parameter P28 - Minimum fan speed (displayed value multiplied by

50), is it in accordance with data shown in Table 4.3.1.

•In the TEST mode, set the boiler power t=0 (fan operates with

factory-set minimum speed).

•After starting the boiler measure the gas inlet pressure on the

measuring point (Fig. 4.2.1. or 4.2.2., item 5.) The values of

pressure depending on the type of gas are shown in Table 4.3.1.

•Connect the flue gas analyzer to the screw in the flue gas adapter

of the boiler.

•Remove the cap from the measuring point number 4 (Fig.4.2.1. or

ISU-689:2016/GB

4.2.2).

•Use the adjusting screw number 4 (Fig.4.2.1. or 4.2.2.) set the gas

flow to obtain the required composition of the flue gas listed in

Table 4.3.1

Maximum power adjustment

•In the parameter programming mode, check the value of

parameter P27 - Maximum fan speed (displayed value multiplied by

50), is it in accordance with data shown in Table 4.3.1.

•In the TEST mode, set the boiler power t=100 (fan operates with

factory-set maximum speed with P28 Parameter).

•After starting the boiler measure the gas inlet pressure on the

measuring point (Fig. 4.2.1. or 4.2.2., item 5.) The values of

pressure depending on the type of gas are shown in Table 4.3.1.

•Connect the flue gas analyzer to the screw in the flue gas adapter

of the boiler.

•Use the adjusting screw number 4 (Fig.4.2.1. or 4.2.2.) set the gas

flow to obtain the required composition of the flue gas listed in

Table 4.3.1

The data specified for gases at normal conditions (15 o C,

pressure 1013 mbar), having regard to boiler efficiency -

95%. Depending on the atmospheric pressure

and gas temperature, the gas consumption may differ

from those listed in the table.

After setting all the test points they should be sealed

and leak testing and re-seal should be done.

The boiler heat output depends on the length of the air inlet and flue

gas exhaust pipes. Slightly decreases as their length increases.

4.4. Adjustment of heating and domestic water power

If necessary the power limitation in system, change the value of P08-

power CH max. parameter or P09-power CH min. parameter. Power

limitation in DHW system can only be done by connecting to the

boiler the domestic hot water tank. In order to limit the power for

heating the domestic water, change the P20-power DHW max.

parameter or P21-power DHW min.

4.5. Controller configuration –setting of boiler parameters

Configuration of parameters can be made only by

AUTHORIZED SERVICE COMPANY.

To activate parameters programming process press the [B+C]3sec

buttons. Accessing the configuration requires a 4-digit security

password (8149). After entering the correct password on the display,

there is shown number parameter, starting from 1. After one second,

the parameter number is replaced by the value of the parameter. If

the password is entered incorrectly, the boiler enters in stand-by

mode.

Press the [E] or [D] buttons to move to the next parameter. The

value of the parameter changes with [G] or [F] buttons. To save the

parameter value, go to another parameter or briefly press the [B]

button. The [B] button is also used to switch between the number

and the parameter value. By pressing [B+C]3sec the programming

mode is switched off.

4.5.1. Preview of parameters value.

You can review the parameter values without the need of change. To

do this, use the [B]3sec button.

After starting LOCAL INSTALLATION mode, the parameter index is

indicated, starting from number 1. After one second index is replaced

by value of the parameter. The parameter value is updated every

three seconds. Press the [E] or [D] buttons to move to the next

parameter. Press the [B]3sec button again to exit the parameter

preview mode. The list of available parameters is shown in Table

4.5.1.1.

Parameter

Description

Range

Factory

setting

P01

CH setting

Currently set CH temperature

20-P2 °C

P02

Max. CH setting

Max. CH temp. limit

20-95 °C

P03

CH hysteresis

Burner shutdown hysteresis

2-10 °C

P04

Blocking time of CH

Break between subsequent

burner starts-up

0-15 min

P05

Min. CH time

Operating time with min.

power for CH

3-10 min

P06

Temperature

increase - CH

Rate of rise the heating

temperature in the initial

heating phase

0-60°C/min

P07

Pump rundown - CH

Pump operating time after

switching off the burner in CH

mode

1-30 min

P08

Max. power - CH

CH power limitation

P9 - 100%

100%

P09

Min. power - CH

Min. CH power specified in %

0-P8%

P10

Kp coefficient for CH

---

4**

P11

Ki coef. for CH

---

228**

P12

Min. modulation - CH

Min. modulation level for the

cascade boiler

20-100 %

20%**

P13

Max. burner power

Max. burner power for the

cascade boiler

0-255kW

70 for

80kW

90 for

100kW

P14

Heating curve

Number of heating curve

0-10

P15

Heating curve shift

Parallel shift of heating curve

20-70°C

30°C

P16

DHW setting

Currently set DHW

temperature

20-65°C

65°C

P17

Max. DHW setting

Specifies the maximum setting

temperature for DHW

65-90°C

65°C

P18

DHW hysteresis

Hysteresis of temperature in

tank

2-10°C

3°C

P19

Pump rundown-

DHW

Pump rundown after end of

operation in DHW mode. Does

not apply to cascade pump

0-180 sec.

30 sec.

P20

Max. power - DHW

DHW power limitation

P21 - 100%

100%

P21

Min. power - DHW

Min. DHW power specified in

0-P20%

P22

Kp coef. for DHW

---

4**

P23

Ki coef. for DHW

---

228**

P24

DHW setting in tank

Unused

°C

P25

Additional value of

setting for DHW

Added value to setting for

DHW

P26

Time of tank

overheating

Protection against frequent

switching on. The time at

which the overheat

temperature is increased by

another 5°C

min

P27

Max. fan rotation

Absolute maximum value of

the fan speed

P28 –255

rpm*50

according

to Table

4.3.1**

P28

Min. fan rotation

Absolute minimum value of

the fan speed

0-P27

rpm*50

P29

Kp fan coef. - up

Coefficient of fan control

---

P30

Ki fan coef. - up

---

244

P31

Kp fan coef. - down

---

P32

Ki fan coef. - down

---

250

P33

Ignitron level

Percentage specified level, at

which the burner is ignited

P25-P26%

P34

Unit type

0..127 –metric units

128..256 –imperial units

P35*

Min. of cascade

pump

Minimum PWM signal for

cascade pump

15-100%

ISU-689:2016/GB

P36*

Max. of cascade

pump

Maximum PWM signal for

cascade pump

15-100%

100%

P37*

Quantity of DHW

boilers

Specifies the number of

boilers operating on heating

the domestic water

0 -6

P38*

Antifreeze cascades -

Temperature on the cascade

sensor to activate the

antifreeze function

°C or °F

P39*

Antifreeze cascades -

OFF

Temperature on the cascade

sensor to the end of

antifreeze function

°C or °F

P40*

Boiler switching

delay

Minimum break time /

operation of boiler in cascade

0-255s

P41*

Sampling time

PI regulation parameter

P42*

Operation mode - OT

0-standard

1-SMILE

0 - 1

* Parameters recorded in the boiler display plate

** It is recommended to leave unchanged

Table 4.5.1 –Controller configuration parameters

Parameter

Unit

Description

P01

Ionization current

µA

P02

CH supply temperature

°C

P03

CH return temperature

°C

P04

DW temperature

°C

P05

Water pressure

Bar*10-1

Pressure in CH installation

P06

Power level

Level of burner power

P07

Required fan speed

50 * rpm

Required fan speed

P08

Current fan speed

50 * rpm

Measured fan speed

P09

Flue gas temperature

°C

Inactive

P10*

Cascade supply temperature

°C

If the temperature sensor

on the coupling is

connected

P11*

Outside temperature

°C

Temperature measured by

external sensor

P12*

Degree of cascade modulation

Current relative degree of

cascade modulation

P13*

CH setting

°C

P14*

DHW setting

°C

P15*

Quantity of burners

---

Number of installed burners

P16*

Quantity of operating burners

---

Number of operating

burners

P17*

Quantity of displays

---

Number of boiler modules

* Parameters recorded in the boiler display plate

Table 4.5.1.1 –Boiler control parameters

5. STARTUP AND OPERATION OF THE BOILER

5.1. Initial startup of the boiler

Before turning on the boiler for use, please check

•hydraulic and flue installations are compatible with applicable law;

•ground connection has been made;

•expansion tank has sufficient capacity, appropriate to the content

of water in the system;

•discharge pipe from the safety valve has been connected;

•type of gas corresponds to the gas to which the device was

designed (→name plate of the boiler);

•gas supply pressure conforms to the expected values.

After installing the boiler, checking the accuracy and

tightness of its connections and preparing for operation

in accordance to this instruction manual and applicable

regulations, first commissioning and user training for

boiler operation and safety devices may be done only by

AUTHORISED FACTORY SERVICE.

Venting the system:

•Check whether the plug of boiler's automatic vent item 2.13 Fig

2.2.1.1 is loose, if not - loosen for half a turn.

•Open the valves on the supply and return from the CH system to

the boiler.

•Close the gas valve at the boiler connection.

•Turn on the electrical boiler power.

•Check the system pressure (see section 4.5.1, P05 parameter). The

pressure should be in the range of 1.2 ÷ 1.8bar. In case of too low

pressure, fill the installation with a filling valve mounted on the

installation.

•Start the boiler in the TEST service mode, the boiler will start the

circulation pump and start the ignition. Due to lack of gas after

failure of ignition test, error "01" will be displayed, which will allow

for continuous operation of the pump and removal of the incoming

air. The boiler should remain in this state until the noise of

removed air will disappear. Continue the procedure until vent the

installation.

•Delete "01" error by using [B] button. Recheck the system

pressure.

After venting the system:

•Check if flue pipe is not blocked and is properly connected to the

flue system;

•Connect the boiler to a power source. Before starting operation,

the boiler controller performs self-checking;

•Open gas valve,

•Using [E] and [D] buttons, set the required CH water temperature

and accept with [B] button;

•After setting the required temperature on the display, after a few

seconds the actual temperature of heating water will appear;

•If you run the boiler and still hear a noise in the installation, it is

necessary to repeat priming steps in order to ensure complete

elimination of air from the system;

•Check the pressure in installation, if it has been reduced - open the

filling valve again until the display shows a value of 1.5 bar, and

after completing the operation close the filling valve;

•Check the CO2 value in flue gas. If the values does not correspond

to the values indicated in the Table 4.3.1, the boiler should be

adjusted in accordance with Section 4.3.

In the waiting state on demand the heat, the boiler displays on the

screen the current temperature measured by the sensor on the

power supply of the CH system, item 2.15, Fig. 2.2.1.1.

In the operating state, the display shows the current temperature on

the supply with the corresponding symbols.

5.2. Operating modes

Startup mode –after turns on the power or after a manual reset of

the boiler. In this mode, three-way valve and pump are supplied. If

there is no require for heat within 12 hours, the boiler is reset. Such

action is to prevent blocking of three-way valve and pump.

Standby mode –no heat demand.

TEST service mode –for a proper setting of the boiler, see section

4.3. In this mode, the fan speed is set between the minimum and

maximum values defined by parameters P27 and P28. The three-way

valve is set on CH. The burner starts at the startup power level

defined by parameter P33 and then goes to the required power

value. TEST mode can not be started if the controller signals an error.

Stand-by mode –mode in which the boiler is switched off, only

safety functions operates:

•Antifreeze protection of the water in CH system, (the boiler

switches on when the boiler water temperature drops below 6°C

and heat the water until temperature reach 15°C ), burner’s power

is set on the lowest lever,

•Antifreeze protection of the water in DHW system (the boiler

switches on when the boiler water temperature –in DHW circuit –

drops below 6°C and heat the water until temperature reach 15°C),

burner’s power is set on the lowest lever,

ISU-689:2016/GB

•Protection against possibility of blocking the pump and the three-

way valve (pump and valve are switched on for about 20 seconds,

at least once a daily).

CH mode –mode in which the boiler heats the CH system. Detailed

described in section 2.4.1.

DHW mode –mode in which the boiler heats the DWH tank. Detailed

described in section 2.4.3.

WINTER mode –the boiler performs the heat demand for both CH

system and heating of domestic water. Priority is always DHW. In the

boiler we can turn off the heating of domestic water function by

pressing [C] button. In this mode, the boiler will ignore the heat

demand from the DHW tank.

SUMMER mode –the boilers performs only heating of domestic

water, and ignores the heat demand for heating in CH system.

The boiler is factory adapted for operation in CH system only, after

installing to boiler the domestic hot water tank, the boiler can

operate in heating the domestic water mode.

5.3. Settings

5.3.1. Change the setting of heating water

Use [D] or [E] buttons to

change the heating water

temperature of the CH

system on the outlet from

boiler. The display will flash

the set temperature in

degrees Celsius. The

selection must be accepted with [B] button. If the user does not

accept, after about 10 sec you will leave the function without saving

new value.

5.3.2. Change the setting of domestic water

Use [G] or [F] buttons to

change the heating water

temperature of the DHW

system on the outlet from

boiler. The display will

flash the set temperature

in degrees Celsius. The

selection must be accepted with [B] button. If the user does not

accept, after about 10 sec you will leave the function without

saving new value.

5.3.3. Switching the SUMMER / WINTER mode

Use [A] button to change

WINTER mode to

SUMMER mode. The

symbol (W2) shown on

the picture will appear

on the screen. To revert

to WINTER mode, use

[A] button again.

5.3.4. Turn off the heating of domestic water

By using [C] button, you

can turn on or turn off

the heating function.

Turning off the function

is signaled by the

symbol (W5) shown on

the picture.

5.3.5. Stand-by mode

Use [A+C]3sec buttons to

activate this mode The

symbol (W11) shown on

the picture will appear

on the screen. Press [B]

button to activate the

boiler.

5.4. Diagnosis

When the operation of the boiler will be incorrect the display shows

the symbol "E" and the error number. When user intervention is

required to remove the blockade of, there will be RESET displayed.

If the boiler will continue to go into a blockade state an AUTHORISED

SERVICE COMPANY needs to be called.

Error

code

Error description

Reset

required

No flame

Fake flame –signaling of disturbances in the flame

control circuit

Activation of temperature limiter on boiler water

system or activation of heat exchanger temperature

limiters

No record of fan speed

Protection on exhaust outlet (2.2)

Flame control circuit error

Error of circuit of gas valve control

Remote reset error

Test of NTC sensors failed

Error of supply water NTC sensor (2.15)

Error of return water NTC sensor (2.14)

Damage of supply water NTC sensor (2.15) or return

water NTC sensor (2.16)

ADC transducer error

Matching error

Closed SUPPLY CH NTC sensor (2.15)

Open SUPPLY CH NTC sensor (2.15)

Closed DHW NTC sensor

Open DHW NTC sensor

Low supply voltage

Low pressure of boiler water

Pressure transducer (2.8) –no communication

Closed RETURN CH NTC sensor (2.14)

Open RETURN CH NTC sensor (2.14)

Pressure transducer (2.8) –damaged or not connected

Temperature sensor of solar collector - closed

Temperature sensor of solar collector - open

Swapped NTC sensors of supply and return

NTC sensors error

see

description

Internal error

see descr.

Error of cascade NTC sensor

see descr.

Error of ES outdoor temp. sensor

see descr.

Cascade system error

see descr.

Error of communication between boilers

see descr.

No communication CONSOLE / CONTROLLER

see descr.

Table 5.4.1 –Error codes

During displaying of each error code the pump is startup.

The only exception is an error E37.

Error 01 description –Number of ignition attempts has been

exhausted and no flame is detected during the safety time in any of

the attempt.

The error may also indicate that the boiler water flow is too low - less

than 20 dm3/min - or the water flow sensor is damaged (2.17).

ISU-689:2016/GB

Error 03 description –Heating water has reached 97°C or thermal

protection of the heat exchanger (BW1) or (BW2) has been activated.

Error 07 description –Flue gas temperature is too high. Back to

operation after about 10 minutes since the switching off. Check the

thermal fuse. In case it is damaged - replace for new one. If not -

check the wiring. Disconnect from the power supply to reset.

Error 13 description –Permissible number of faults reset has been

exceeded (5 x within 15min). It is necessary to disconnect and turn

on again the power again in order to remove the error.

Error 15 and 81 description –If, during standby the temperature

difference on the supply temp. sensor (2.15) and return (2.14) is too

high, an error E15 is displayed. If after 24 hours of error, temperature

difference is still out of range, an error E81 is displayed.

Error 16 description –Each time the burner ignites, the value read by

the sensor must change by at least ± 0.25°C. If the sensor did not

read the change within 2 minutes, an E16 error is displayed.

Error 17 description –Within 24h the value of the read temperature

must change by at least ± 0.25°C.

Error 18 description –In continuous mode, the temperature

difference on each sensor is measured if there occurs a temperature

change on any of the sensors above 30K/s, an error E18 is displayed.

Sensors should be checked; defective one or both at once should be

replaced.

Error 21 description –An internal control has identified an error of

ADC transducer. Deleting a lockout will be possible if the internal

tests do not show the error again. Probably, the transducer is

damaged and the controller should be replaced.

Error 25 description –Software in the microprocessor and EEPROM

memory are not the same. The controller should be replaced.

Error 34 description –The supply voltage has dropped below 157V

(+/- 10V).

Error 37 description –It appears when the pressure in system read

by the pressure sensor (2.8) is less than 0.5 bar. Check whether the

system pressure is in the range of 1-1.5bar and complete the

installation (if it is needed).

Error 80 description –Each time the boiler is started, the NTC supply

and return sensor measures the temperature on both sensors at

short intervals. If the return temperature is higher by 3°C, the time

180s is measured. If the return temperature remains higher during

this time, an error E80 is displayed.

Error 94 description –The display in the control panel (2.6) has been

damaged. Replace the display plate.

Error 95 description –For boilers connected in series, the

temperature sensor in the supply collector (CS) is not connected or

the sensor is damaged (closed/open). In the case of a single boiler,

the control console does not receive a signal from the NTC supply

sensor. Check the electrical connections.

Error 96 description –When the P14 parameter is set on a value

other than zero, the controller does not detect the presence of the

sensor (closed/open). Please check the sensor (ES) connection. If

there is no sensor, change the value of P14 parameter to 0.

Error 97 description –The system of boilers connected in series in

the cascade system has changed.

•The number of connected boilers has changed.

•The sequence of boilers connection has been changed.

•The last cascade configuration has failed.

In order to remove the error, re-configure the cascade.

Error 98 description –Communication between boilers connected in

series in the cascade system has been lost.

•The sequence of boilers connection has changed. Re-configure the

cascade.

•The control system has been replaced in one of the cascade boilers.

Re-configure the cascade.

•The wiring has been damaged. Check the wires for serial

connection of boilers.

•There are problems with power supply of one of the boiler. Check

the power supply and fuses in each boiler.

•The control console (2.6) has been damaged. Replace the display

board in the control console (2.6).

Error 99 description –The display in the control console (2.6) can not

communicate with the controller (2.7). Check the wiring. Replace the

display board or the controller (2.7).

5.4.1. Errors history

Activation of History errors mode takes place after using [C]3sec

button. In this mode we have access to the last 8 faults. After turning

on this mode, on the screen appears "bu 0" after 3 seconds. Move to

the index selection screen takes place after 3 seconds or on demand

with [B] button. The screen shows number "H i O" indicating the

index of the last fault, fault indexes take values from 0 to 7. To switch

between the indexes faults, use [E] and [D] buttons. The selected

index after 1s. is replaced by an error code. Switch between the

index and the value of the error code can be made using [B] button.

To complete the History errors mode use [C]3sec button.

5.5. Antifreeze function

This function starts the pump when the temperature in CH circuit or

DHW circuit drops below 8°C. If the water temperature drops to 6°C,

the burner starts and heats the water until the temperature reaches

15°C. The burner's power is set at the lowest level.

5.6. Function to prevent blockage of pump and three-way

valve

Pump and three-way valve are started at least once in 24 hours for

about 20 seconds to eliminate the risk of blockage due to a long

inactivity.

5.7. Break in operation of the boiler

•leave the boiler connected to the electricity mains;

•leave the gas valve and water valve of CH opened;

•start the Stand-by mode with [A+C]3sek buttons.

If the boiler may stay unused for a longer period of time and the

above protections will be turned off from operation you should:

•disconnect the boiler from the electric mains;

•drain the water system of the boiler and also CH system if there is

possibility of freezing;

•close the valve on the water and the gas system.

ISU-689:2016/GB

In a winter time (due to the risk of freezing water in

the system) the disconnection the boiler from

electrical system is forbidden (if there is still water in

the water system of the boiler).

Empty the boiler by means of a valve mounted inside the boiler

(2.22).

6. MAINTENANCE, INSPECTIONS, CHECKING OF THE

OPERATION

6.1. Inspection and maintenance

The boiler should be regularly serviced and subjected to

maintenance. At least once a year it is recommended to

perform a service and it should be reviewed before

heating season. All service and maintenance works

should be performer by an authorized person. Only

original parts should be used for boiler repairs. At every

service and maintenance works the tightness of the gas

units and gas installation and correctness of the

protective systems should be checked. The warranty

does not cover above mentioned operations.

6.1.1. Preparing the boiler for service

Before each cleaning or replacement of components,

ALWAYS disconnect the power supply as well as water

and gas supply of boiler. The manufacturer is not liable

for any damages caused by failure to follow the above

recommendations.

For easier maintenance, it is recommended to remove the casing as

follows.

Fig. 6.1.1.1 –Removing the front cover

Dismantling the front cover:

1. Loosen the screws (K1),

2. Pull the cover behind its lower edge to release from the latches,

3. Move the cover up.

Dismantling the side cover:

4. Unscrew the screws K2.

5. Move the cover up.

Fig. 6.1.1.2 –Deflecting the controller bracket

In order to facilitate access to the boiler’s interior, the controller

must be lowered together with the bracket on which it is mounted,

for this purpose:

1. Unscrew the screws (K3),

2. Lower the bracket until locked.

Fig. 6.1.1.3 –Dismantling of the controller

If it is necessary to remove the controller (2.7) after removing the

front cover and deflecting the console, you must:

Remove all wires connected to the controller.

1. Unscrew the screws (K4)

2. Move the controller up and then pull out of the boiler.

6.1.2. Maintenance of the combustion chamber, burner,

ignition electrode and ionization electrode

The interior of the combustion chamber, burner surface and the

electrodes should be checked by visual inspection:

•the contaminated burner and the interior of the combustion

chamber may be cleaned with a brush made of plastic,

•visible on the surface of the burner gaps and deformations

disqualify burner - replace the burner,

•clean the electrodes with a plastic brush,

•deformed electrodes should be replaced,

•check the condition of insulators of all electrodes,

•clean dirty insulators,

•insulators with visible damages disqualify the electrodes –

to be replaced.

Dirty burner and the interior of combustion chamber

mean that the boiler regulation must be done.

ISU-689:2016/GB

Fig. 6.1.2.1 –Deflecting the burner unit

Actions performed during the service of combustion chamber and

heat exchanger:

•Stop the power supply and gas supply of boiler;

•Disconnect electrical connections of fan;

•Open the connection which connect gas valve;

•Disconnect the cables of the ignition electrode and flame control

electrode;

•Loosen the band (L2) and take off the air suction pipe (L3) from the

mixing unit;

•Unscrew the screws (S1) connecting the gas valve with supply

piping;

•Unscrew 6 caps (N1) fixing the burner assembly to the combustion

chamber;

•Remove the burner assembly being careful not to dismantle the

cover of the bottom of exchanger which is made of ceramic fiber;

•Check that the burner is free of sediment and scale, and whether

there has been no over-oxidation; check all holes of burner - if they

are not blocked;

•Carefully clean the electrodes without changing their location in

relation to the burner;

•Clean the burner cylinder with a brush (cannot be metal), being

careful not to damage the ceramic fiber;

•Check the integrity of the seals (gaskets) on the lid of the burner;

•Clean the heat exchanger using domestic detergent designed for

cleaning stainless steel. Spread the product with a brush on the

rolls of the exchanger, taking care not to wet the coverings made of

the ceramic fiber. After a few minutes, remove the sediment with a

soft brush (not metal) and then remove residues with tap water;

•Remove the clamp ring, pull out the pipe to condensate drainage

and wash it under running water;

•Loosen the siphon connection, remove it and continue washing

under running water;

•After cleaning, reassemble the components in reverse order;

•Check that the boiler does not have any leaks causing loss of gas

6.1.3. Thermal protection of the heat exchanger

The heat exchanger is equipped with thermal protection (BW1) and

(BW2) protecting against improper assembly of the exchanger. If the

exchanger is mounted without ceramic thermal insulation, the

protection will be activated. The limiters (BW1) and (BW2) are

connected in series with the domestic water temperature limiter

(2.16), in this case of activation - "E03" error occurs. Temperature of

limiter activation (BW1) is 260°C. Limiter has the ability to manually

reset at room temperature about 22°C. Before restarting, check the

insulation on the burner collector. The fuse (BW2) will be burned at

318°C, after checking and removing the fault, replace the fuse with a

new one.

Fig. 6.1.3.1 –Temperature limiters of exchanger

6.1.4. Cleaning the condensate siphon

In order to clean the siphon:

•Unscrew the siphon (under bottom cover –see Fig. 3.7.1),

•Lifting the float, empty the siphon from remaining condensate;

•Inside the boiler, unscrew condensate drain from the siphon;

•Remove the hose connecting the siphon with heat exchanger;

•Remove the siphon set in bottom cover;

•Clean the siphon from any dirt;

•Mount the siphon;

•Check the patency of the siphon (e.g. blow the tube which drains

the condensate).

To avoid the possibility of leakage of flue gas through a siphon until

the condensation of the condensate in it (flooding) there is a

possibility of flooding the siphon by pouring a little water.

6.2. Replacing a damaged control board in the control panel

If the control board need to be replaced follow the installation

instructions attached to each board devoted as spare part.

6.2.1. Replacing the fuse in the controller

Remove the controller (2.7) according to. Fig. 6.1.1.3. With the flat

screwdriver, unscrew 6 catches on the controller housing, then

remove the cover. There are two 3,15A fuses on the board. Find the

damaged fuse and replace it with a new one. Replace the cover and

mount the controller.

This manual suits for next models

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