Kober EKO Series Operating manual

TECHNICAL USER`S AND FIRST INSTALLATION MANUAL
Edition: 1
Revision: 1
ROMANIA
KÖBER S.R.L.
Vaduri Branch Date: 15.02.2012
Form code F-02-15
NAME OF FACILITY / EQUIPMENT
Wall hung gas boilers.
Range of EKO boilers, type C32 Page: 1 of 52
©2002-2012 KÖBER SRL VADURI BRANCH
Manufacturer KÖBER SRL Dumbrava Rosie, Vaduri Branch
Wall Hung Gas Boilers EKO range, type C32
Brand name TYPE DRAUGHT POWER
EKO OPTIMUS C32SPV24MEFA FORCED 24 kW
EKO MT TF C32SPV24MEFB FORCED 24 kW
EKO MT TN C32SPV24MEC NATURAL 24 kW
EKO MAXOPTIMUS C32SPV31MEFA FORCED 31 kW
EKO MAX TF C32SPV31MEFB FORCED 31 kW
EKO MAX TN C32SPV31MEC NATURAL 31 kW
Signatories:
Branch Executive Officer Eng. Theodor Farcas
Technical Manager: Eng. Ghe. Visan
Iasi Design Manager: PhD Associate Engineer, Alexandru Barleanu
Quality Manager: Eng. Mihaela Cadar
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TECHNICAL USER`S AND FIRST INSTALLATION MANUAL
Edition: 1
Revision: 1
ROMANIA
KÖBER S.R.L.
Vaduri Branch Date: 15.02.2012
Form code F-02-15
NAME OF FACILITY / EQUIPMENT
Wall hung gas boilers.
Range of EKO boilers, type C32 Page: 2 of 52
©2002-2012 KÖBER SRL VADURI BRANCH
TABLE OF CONTENTS
1. OVERVIEW OF THE GAS BOILER ..............................................................4
1.1 SAFETY MEASURES. HIGHLY IMPORTANT! ........................................................ 4
1.2 CE MARKING........................................................................................................... 6
1.3 LIST OF OBSERVED STANDARDS ........................................................................ 6
1.4 GENERAL DESCRIPTION ....................................................................................... 7
1.5 DESCRIPTION OF THE RANGE OF BOILERS....................................................... 7
2TECHNICAL CHARACTERISTCS................................................................8
2.1 THE MAIN COMPONENTS OF THE GAS BOILER ................................................. 8
2.2 TECHNICAL AND FUNCTIONAL CHARACTERISTICS .......................................... 9
3MOUNTING-INSTALLATION INSTRUCTIONS ..........................................11
3.1 GENERAL INFORMATION .....................................................................................11
3.2 THE LOCATION OF THE BOILER..........................................................................11
3.3 THE MOUNTING OF THE BOILER.........................................................................11
3.3.1 UNPACKING THE BOILER..............................................................................11
3.3.2 PREPARING THE MOUNTING PLACE ...........................................................11
3.3.3 FIXING THE BOILER ON THE WALL..............................................................12
3.4 CONNECTING THE GAS BOILER..........................................................................12
3.4.1 CONNECTION TO THE GAS NETWORK .......................................................12
3.4.2 ELECTRIC POWER SUPPLY ..........................................................................13
3.4.3 THE AIR INLET – FLUE GAS OUTLET SYSTEM............................................13
3.4.4 CONNECTION TO WATER AND HEATING INSTALLATION..........................16
3.5 FILLING, VENTING/EMPTYING THE HEATING INSTALLATION ..........................18
3.5.1 FILLING AND VENTING OF THE HEATING INSTALLATION .........................18
3.5.2 ADDING WATER IN THE HEATING INSTALLATION......................................19
3.5.3 EMPTYING THE HEATING INSTALLATION ...................................................19
3.6 MOUNTING THE AMBIENT THERMOSTAT ..........................................................19
3.7 MOUNTING THE OUTDOOR TEMPERATURE SENSOR......................................19
3.8 FIRST START-UP – INSTRUCTIONS FOR THE AUTHORIZED PERSONNEL!....21
4NORMAL OPERATION...............................................................................22
4.1 OPERATION IN DOMESTIC HOT WATER MODE.................................................23
4.2 OPERATION IN CENTRAL HEATING MODE.........................................................23
4.3 FUNCTIONS REGARDING THE SAFETY OF THE BOILER..................................24
4.4 SHUTTING DOWN THE BOILER UNDER SAFETY CONDITIONS........................24
5INSTRUCTIONS FOR USING THE CONTROL PANEL .............................25
5.1 LMC1112 CONTROL PANEL (INTERFACE) ..........................................................25
5.1.1 GENERAL DESCRIPTION OF THE LMC1112 CONTROL PANEL .................25
5.1.2 DESCRIPTION OF THE FUNCTIONS AND DISPLAYED GRAPHIC
CONTEXTS ....................................................................................................................26
5.2 LMC1X CONTROL PANEL (INTERFACE)..............................................................29
5.2.1 GENERAL DESCRIPTION OF THE LMC1X CONTROL PANEL.....................29
5.2.2 DESCRIPTION OF THE FUNCTIONS AND DISPLAYED GRAPHIC
CONTEXTS ....................................................................................................................30
6DESCRIPTION OF ERRORS......................................................................34
7PERIODIC CHECKING INSTRUCTIONS....................................................37

TECHNICAL USER`S AND FIRST INSTALLATION MANUAL
Edition: 1
Revision: 1
ROMANIA
KÖBER S.R.L.
Vaduri Branch Date: 15.02.2012
Form code F-02-15
NAME OF FACILITY / EQUIPMENT
Wall hung gas boilers.
Range of EKO boilers, type C32 Page: 3 of 52
©2002-2012 KÖBER SRL VADURI BRANCH
8MARKING, ACCOMPANYING DOCUMENTS, PACKAGING....................37
9QUALITY GUARANTEE TERMS................................................................38
10 ANNEXES ...................................................................................................39
ANNEX 1A – OVERVIEW. COMPONENTS. ..................................................................39
ANNEX 1B – BLUEPRINTS NECESSARY FOR MOUNTING AND PUTTING INTO
SERVICE........................................................................................................................42
ANEXA 1C MINIMUM DISTANCES FOR INSTALLATION – SERVICE.........................43
ANEXA NR.2 – DISTANCES FOR MOUNTING THE BOILER ON THE WALL..............43
ANNEX NO. 3 – HYDRAULIC DIAGRAM, WITH POSSIBILITY OF CONNECTING TO
THE BOILER A DOMESTIC HOT WATER STORAGE TANK........................................44
ANNEX NO. 4 – HYDRAULIC CHARACTERISTIC OF THE WATER PUMP.................44
ANNEX NO.5 – MINIMUM DISTANCES RECOMMENDED FOR THE MOUNTING OF
THE AIR INLET/FLUE GAS OUTLET PIPES .................................................................46
ANNEX NO. 6 – INSTALLATION CONFIGURATIONS OF AIR INLET/ FLUE GAS
OUTLET PIPES TO BOILERS WITH FORCED DRAUGHT...........................................48
ANNEX NO. 7 – CONNECTION DIAGRAM (ELECTRONIC BOARD) ...........................49
ANNEX NO. 8 – EXAMPLES OF THERMAL SYSTEMS................................................51
ANNEX NO. 8A – INSTANT DHW PREPARATION SYSTEM........................................51
ANEXA NO. 8B – DHW PREPARATION SYSTEM WITH BOILER (WITHOUT COIL) ..51

TECHNICAL USER`S AND FIRST INSTALLATION MANUAL
Edition: 1
Revision: 1
ROMANIA
KÖBER S.R.L.
Vaduri Branch Date: 15.02.2012
Form code F-02-15
NAME OF FACILITY / EQUIPMENT
Wall hung gas boilers.
Range of EKO boilers, type C32 Page: 4 of 52
©2002-2012 KÖBER SRL VADURI BRANCH
1. OVERVIEW OF THE GAS BOILER
1.1 SAFETY MEASURES. HIGHLY IMPORTANT!
Please strictly follow the information contained in this manual!
Otherwise, fire and explosion hazard might appear which could lead to material
damages, injury of the persons or even death.
The manufacturer does not accept any contractual or extracontractual liability
for damage caused by errors in improper installation, start-up, use and
maintenance.
The installation, the putting into service, maintenance, repairs and regular
technical checking are performed only by the ISCIR (State Inspection for the
Control of Boilers, Pressure Vessels and Hoisting Equipment) authorised
personnel in accordance with the legal provisions in force (PTA1/2010, as well
as the regulations of A.N.R.G.N. (National Natural Gas Regulatory Authority)
and C.O.N.E.L. (National Electricity Company)). Please refer to the “List of start-
up and service providers accepted by KÖBER SRL” or contact directly the
manufacturer at the phone number 0233 / 241746.
In the interest of your safety please observe this.
Interventions at the gas network will be performed by the gas provider.
Do not store and do not use inflammable materials near the gas boiler.
Do not use the gas boiler if any of its components are or have been flooded.
Please notify immediately the qualified service personnel in order to inspect the
gas boiler and replace the component of the control or gas system that entered
into contact with water.
If you smell gas proceed as follows:
- Do not flare up or turn on the light
- Do not touch any electrical switches
- Close the gas valve
- Call immediately the gas provider. Do not use the telephone in the building
where the gas boiler is located!
- If you do manage to reach the gas provider, call the fire-fighters – 112!
The gas boiler will not be used by children or persons with sensory or
mental disability, unless supervised by personnel appropriately trained for a
safe and hazard-free use.

TECHNICAL USER`S AND FIRST INSTALLATION MANUAL
Edition: 1
Revision: 1
ROMANIA
KÖBER S.R.L.
Vaduri Branch Date: 15.02.2012
Form code F-02-15
NAME OF FACILITY / EQUIPMENT
Wall hung gas boilers.
Range of EKO boilers, type C32 Page: 5 of 52
©2002-2012 KÖBER SRL VADURI BRANCH
This manual is an integral and essential part of the product and it has to be
handed over to the user.
If the appliance is sold or alienated under any other form, make ensure it is
delivered with its technical manuals so that they may be referred to by the
new user and/or installation technician.
Read this manual carefully and keep it safe for a further use by the user and
by the authorised mounting and repair personnel.
In the case of defective running of the appliance, shut it down and contact
immediately one of the service centres that ensure the troubleshooting of this
product at the related telephone numbers (please the “List of accepted start-
up and service providers” from the documents pack); or contact directly the
manufacturer at the telephone number: 0233 / 241746.
To guarantee the efficiency of the gas boiler and its proper operation it is
recommended an annual checking carried out by specialised personnel,
observing the manufacturer's conditions.
In case of failure of certain parts, only genuine parts will be used for
replacement.
With regard to spare parts, to use some components from another company
other than the one recommended by the manufacturer, you must have the
written acceptance of the manufacturer to use those components.
This boiler must be used only for the purposes for which it has been expressly
designed. All other uses are considered inappropriate.
It is mandatory to mount a water softener filter on the wastewater pipe, a
mechanical impurity filter (y filter) on the return of the central heating system
and a pressure regulator on the fuel supply path.
Failure to observe the provisions of this technical manual, as well as of those
comprised in the warranty certificate leads to warranty loss.

TECHNICAL USER`S AND FIRST INSTALLATION MANUAL
Edition: 1
Revision: 1
ROMANIA
KÖBER S.R.L.
Vaduri Branch Date: 15.02.2012
Form code F-02-15
NAME OF FACILITY / EQUIPMENT
Wall hung gas boilers.
Range of EKO boilers, type C32 Page: 7 of 52
©2002-2012 KÖBER SRL VADURI BRANCH
1.4 GENERAL DESCRIPTION
The wall hung gas boiler is a fuel gas-consuming appliance (natural gas or liquefied
petroleum gas) which has the role of turning the energy of the fuel into thermal energy by
burning.
The boiler can be used in the “summer” mode, in this case the boiler functions only
for producing domestic hot water, or in the “winter” mode, case in which the boiler functions
both for the central heating of the housing and for preparing domestic hot water. In the
“winter” operation mode, the demand of domestic hot water has a higher priority.
This model of boiler functions unsupervised due to its protection and control systems
with which it is fitted.
All boilers in the EKO range are monothermal, which means that they have two
exchangers: the primary exchanger for preparing thermal agent and the secondary plate
exchanger for preparing domestic hot water.
In order to obtain an adequate comfort, in case of increased domestic hot water
consumption, we recommend using a MOTAN boiler. Please refer to Annex 8 “Examples
of thermal systems”.
If you decide to also install a MOTAN boiler, ask the installation technician or the
service personnel to set the boiler for preparing domestic hot water at the value of 60ºC.
1.5 DESCRIPTION OF THE RANGE OF BOILERS
The range of EKO boilers is composed of wall hung gas boilers, with rated output = 24,
respectively 31 Kw with the following design versions:
a) Type: C32 SPV 24 MEF A
b) Type: C32 SPV 24 MEF B
c) Type: C32 SPV 24 ME C
d) Type: C32 SPV 31 MEF A
e) Type: C32 SPV 31 MEF B
f) Type: C32 SPV 31 ME C
where:
C32 – family of boilers
S – with instant production of domestic hot water (without storage);
P – with pump;
V – with closed expansion vessel;
24, respectively 31 – the maximum rated output that the boiler may give, in kW;
M – the burner is supplied by a continuous modulating valve;
E – the ignition and the control of the flame are electronically-made;
F – the forced scavenging of burning gases using the fan;
A – the fan with variable revolutions per minute;
B – the fan with constant revolutions per minute;
C – natural draught, without fan.
The boiler is designed to use gas from the following classes: G20, G25, G25.1,
G30/G31.
The type of gas for which the appliance is calibrated is specified on the product label and
on the name plate.

TECHNICAL USER`S AND FIRST INSTALLATION MANUAL
Edition: 1
Revision: 1
ROMANIA
KÖBER S.R.L.
Vaduri Branch

TECHNICAL USER`S AND FIRST INSTALLATION MANUAL
Edition: 1
Revision: 1
ROMANIA
KÖBER S.R.L.
Vaduri Branch Date: 15.02.2012
Form code F-02-15
NAME OF FACILITY / EQUIPMENT
Wall hung gas boilers.
Range of EKO boilers, type C32 Page: 9 of 52
©2002-2012 KÖBER SRL VADURI BRANCH
2.2 TECHNICAL AND FUNCTIONAL CHARACTERISTICS
Table 1: Technical characteristics of 24 kW boilers
Commercial name
EKO OPTIMUS EKO MT TF EKO MT TN
Boiler type
C32SPV24 MEFA C32SPV24 MEFB C32SPV24 MEC
Draught
Forced, fan with
variable revolutions
per minute
Forced, fan with constant
revolutions per minute
Natural
(without a fan)
Gas category
II2H3B/P, I2H, I2E+, II2ELL3B/P, II2HS 3B/P, II2E3P, II2L3B/P
Thermal efficiency at rated load
93% 93% 93%
NOx band (operation with G20)
3 3 3
Rated output (min/max), P
8.6 – 24 KW 8.6 – 24 KW 8.6 – 24 KW
Nominal heat input (min, max), Q
9.5 – 25.8 KW 10 – 25.8 KW 10 – 25.8 KW
Gas supply nominal pressure
G20 - 20 mbar
G25; G25.1 - 25 mbar
G30 - 30 mbar
G31 - 37 mbar
G20 - 20 mbar
G25; G25.1 - 25 mbar
G30 - 30 mbar
G31 - 37 mbar
G20 - 20 mbar
G25; G25.1 - 25 mbar
G30 - 30 mbar
G31 - 37 mbar
Electrical power consumption
230VAC/50Hz – 135W –
IP40
230VAC/50Hz – 135W –
IP40
230VAC/50Hz – 100W –
IP40
Weight
32 kg 32 kg 28 kg
Heat exchanger capacity
1 l 1 l 1 l
Fuel consumption G.N.
(8,500 kcal/Nm
3
) at P (min/max) ( Nm
3
/h )
0.97 / 2.64 Nm
3
/h 1.02 / 2.64 Nm
3
/h 1.02 / 2.64 Nm
3
/h
Fuel consumption G.P.L.
(20,425 kcal/kg) at P (min/max) ( kg/h )
0.74 / 2.01 kg/h 0.78 / 2.01 kg/h 0.78 / 2.01 kg/h
Central heating
Minimum admitted pressure
Maximum admitted pressure
Temperature on the heating circuit
classic system
Temperature on the heating circuit floor
system
0.8 bar
2.6 bar
30 – 80°C
15 – 45 °C
0.8 bar
2.6 bar
30 – 80°C
15 – 45 °C
0.8 bar
2.6 bar
30 – 80°C
15 – 45 °C
Connections
Central heating inlet - outlet
DHW inlet - outlet
Gas supply
3/4"
1/2"
3/4"
3/4"
1/2"
3/4"
3/4"
1/2"
3/4"
Expansion vessel with membrane
7 l 7 l 7 l
DHW temperature instant mode
DHW temperature boiler mode
Flow values
∆t = 25°C
∆t = 35°C
∆t = 45°C
35 – 55°C
70°C
13.5 l/min
9.8 l/min
7.5 l/min
35 – 55°C
70°C
13.5 l/min
9.8 l/min
7.5 l/min
35 – 55°C
70°C
13.8 l/min
9.8 l/min
7.7 l/min
Domestic hot water pressure
Minimum 1 bar – Maximum 8 bar
Flue gas temperature
150°C 150°C 110°C
Air inlet – flue gas outlet connection
Ø100/ Ø60 – coaxial kit
Ø80/ Ø 0 –dual kit
Ø125
Length of the flue gas connection
maximum 3 m – coaxial kit
maximum 5m – dual kit
Minimum 1m + cos
Exhaust type
C
12
, C
22
, C
32
, C
42
, C
52
, C
62
, C
72
, C
82
B
11BS
Guiding values
Max. water content in the installation
7in

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Table 2: Technical characteristics of the C32 – 31 kW boilers
Commercial name
EKO MAXOPTIMUS EKO MAX TF EKO MAX TN
Boiler type
C32SPV31 MEFA C32SPV31 MEFB C32SPV31 MEC
Draught
Forced, fan with
variable revolutions
per minute
Forced, fan with constant
revolutions per minute
Natural
(without a fan)
Gas category
II2H3B/P, I2H, I2E+, II2ELL3B/P, II2HS 3B/P, II2E3P, II2L3B/P
Thermal efficiency at rated load
93% 93% 93%
NOx band (operation with G20)
3 3 3
Rated output (min/max), P
10 – 31 KW 10 – 31 KW 10 – 31 KW
Nominal heat input (min, max), Q
11 – 33.3 KW 11.6 – 33.3 KW 11.6 – 33.3 KW
Gas supply nominal pressure
G20 - 20 mbar
G25; G25.1 - 25 mbar
G30 - 30 mbar
G31 - 37 mbar
G20 - 20 mbar
G25; G25.1 - 25 mbar
G30 - 30 mbar
G31 - 37 mbar
G20 - 20 mbar
G25; G25.1 - 25 mbar
G30 - 30 mbar
G31 - 37 mbar
Electrical power consumption
230VAC/50Hz – 135W –
IP40
230VAC/50Hz – 135W –
IP40
230VAC/50Hz – 100W –
IP40
Weight
36 kg 36 kg 31 kg
Heat exchanger capacity
1.8 l 1.8 l 1.8 l
Fuel consumption G.N.
(8,500 kcal/Nm
3
) at P (min/max) ( Nm
3
/h )
1.16 / 3.38 Nm
3
/h 1.21 / 3.38 Nm
3
/h 1.21 / 3.38 Nm
3
/h
Fuel consumption G.P.L.
(20,425 kcal/kg) at P (min/max) ( kg/h )
0.88 / 2.59 kg/h 0.92 / 2.59 kg/h 0.92 / 2.59 kg/h
Central heating
Minimum admitted pressure
Maximum admitted pressure
Temperature in the heating circuit
classic system
Temperature in the heating circuit floor
system
0.8 bar
2.6 bar
30 – 80 °C
15 – 45°C
0.8 bar
2.6 bar
30 – 80°C
15 – 45°C
0.8 bar
2.6 bar
30 – 80°C
15 – 45°C
Connections
Central heating inlet - outlet
DHW inlet - outlet
Gas supply
3/4"
1/2"
3/4"
3/4"
1/2"
3/4"
3/4"
1/2"
3/4"
Expansion vessel with membrane
7 l 7 l 7 l
DHW temperature instant mode
DHW temperature boiler mode
Flow values
∆t = 25°C
∆t = 35°C
∆t = 45°C
35 – 55 °C
70°C
17.8 l/min
12.7 l/min
9.9 l/min
35 – 55 °C
70°C
17.8 l/min
12.7 l/min
9.9 l/min
35 – 55 °C
70°C
17.7 l/min
12.6 l/min
9.8 l/min
Domestic hot water pressure
Minimum 1 bar – Maximum 8 bar
Flue gas temperature
135°C 135°C 120°C
Air inlet – flue gas outlet connection
Ø100/Ø60 – coaxial kit
Ø80/Ø80 –dual kit Ø125
Length of the flue gas connection
maximum 3 m –coaxial kit
maximum 5m – dual kit
Minimum 1m + cos
Exhaust type
C
12
, C
22
, C
32
, C
42
, C
52
, C
62
, C
72
, C
82
B
11BS
Guiding values
Maximum water content in the
installation
Maximum surface of the enclosure at
2.5 m height
200 l
300 m
2
200 l
300 m
2
200 l
300 m
2

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3 MOUNTING-INSTALLATION INSTRUCTIONS
The chapter addresses both to the qualified persons which contribute to the installation of
the boiler and to the beneficiary who is interested that the performed works to correspond to
the safety operations standards of all the installations which contribute to the proper
functioning of the boiler.
An incorrect installation latheo ie710.576( )737778408(nm1( )1.3689o92(.5501(u74056( )-)0198131)527074-19.9104(t)737842.0722(n)2.(2(.5501(/( )-41.1897(t)1.368920198131)590182(t)3.171h)-0 m.76892(o)-6.0991(n)4.5405639.91 0.80B32 )-41.1897()-51.t)-9.27hec-360.379(w)9.14346(h)2

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3.3.3 FIXING THE BOILER ON THE WALL
Two holes are made in the wall for the screw anchors using the support made of zinc-
platted sheet from the standard equipment of the boiler.
The hole for the passing of the inlet-outlet kit is made (in compliance with the sizes
indicated in annex 1B and annex 2).
The two anchors are fixed in the wall, after which the two stove bolts are threaded.
The support of the boiler is fixed. The boiler is fixed on the support, so that it will be
well fixed in two profiles especially made on the central support bar.
The stability of the fixing and the positioning on the wall are checked so that there
would not be straining of the structure of the boiler.
3.4 CONNECTING THE GAS BOILER
3.4.1 CONNECTION TO THE GAS NETWORK
The entire gas supply installation must be made in compliance with the regulations in
force and sized so that the necessary gas flow of the boiler is also ensured for the other gas
consuming appliances within the housing.
The gas supply installation
must MANDATORILY include a pressure
reducer, with an impurity filter.
The pressure reducer is not part of the
standard equipment of the boiler and must
be purchased separately.
The pressure of the natural gas at the entrance in the gas valve must be kept
within the range of 20÷25 mbar.
The pressure of the gas if G.P.L. is used at the entrance in the gas valve
must be kept within the range of 30÷37 mbar.
The maximum admitted pressure at which a gas valve holds is of 60 mbar.
If the foreseen pressure is not observed noises can be produced due to a
turbulent burn or problems might appear at the internal regulator of the gas
valve, which leads to the worsening of the combustion performances.
The gas supply connection (C connection – see annex 3 “Hydraulic diagram”)
must be of 3/4". The diameter of the gas installation will be at least equal with the
diameter of the connection (3/4").
For the user’s safety, the entire gas supply
installation, including the meter, must be
checked in order to be sure there are no gas
leaks!

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3.4.1.1 ADAPTATION TO ANOTHER TYPE OF GAS
In order to properly function with another type of gas, the AUTHORIZED
PERSONNEL will make all necessary settings. Necessary information for the adaptation to
other type of gas is presented in the table.
Table 3: Adaptation parameters to other type of gas
C 32 – 24 kW C 32 – 31 kW
G20 G25 G25.1 G30 G31 G20 G25 G25.1 G30 G31
Supply pressure (mbar) 20 25 25 30 37 20 25 25 30 37

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3.4.3.1 CONNECTION OF THE HORIZONTAL COAXIAL INLET-OUTLET
SYSTEM
The flue gas exhaust is made through an Ø60 mm diameter tube, coaxial (concentric)
with the air inlet tube having a diameter of Ø100 mm. The exhaust tube is located inside the
inlet one.
The 1 m coaxial kit is part of the standard components of the boiler.
As standard, it is made of an elbow coaxial with the flange, the 1 m coaxial terminal,
gripping and sealing (gaskets) elements, but upon the beneficiary’s request, coaxial
extensions can be delivered for the extension to up of maximum 3 m.
The connection is made as follows:
- all gaskets are mounted in their own notches.
- the elbow is fixed on the top cover of the pressurized room with 4 screws, taking care that
between the cover and the elbow the related gasket be positioned.
- the centralization element is fixed on the internal tube. The internal tube is inserted in the
external one.
- the tubes are fixed by a coupling on the elbow. Before fixing, the ornament gasket for the
wall, the rubber packing and the sealing bridle are mounted.
The kit will mandatorily have a 3% slope (approx. 2°)
for removing towards the exterior the condensed water and
for avoiding the rain water penetration into the boiler.
For each extension elbow installed at 90
0
, the maximum
length of the inlet/outlet tubing is reduced by 1 m.
In no cases, the total length of the kit, with extensions, will
not exceed the equivalent of 3 m.
In the case of
boiler with forced draught, fitted with fan with set revolutions
per minute, in order to obtain the efficiency declared by the manufacturer, at the
same time observing the limits of the resulted flue gas compounds, it is
necessary to mount the glances delivered together with the boiler.
aprox 2°
Components:
1 – 90
0
elbow kit with test-point
2 – rubber cup packing
3. 10 – rubber sealing gasket
4 - metal bridle
5 – centralizing clamp
6 - Ø60 mm flue gas exhaust
tube
7 - Ø100 mm air charging tube
8 - wall ornament
9 – plastic terminal
11, 12 – self-cutting screws

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Upon the installation of the coaxial inlet/outlet pipes, please consider the mentioning
from the following table: Table 4: Information for installing an Ø 60/100 mm coaxial kit
Minimum length (except for the first elbow) = 1 m
Maximum allowed length = 3 m
Factor for reducing the 90
0
elbow = 1 m
Factor for reducing the 45
0
elbow = 0.5 m
Boiler type
Glance to be used for:
C32SPV24MEFA C32SPV24MEFB C32SPV31MEFA C32SPV31MEFB
1 m kit Ø48 Ø 46
Not mounting Ø 48
2 m kit Ø 48 Ø 48
Not mounting Ø 52
3 m kit Ø48 Ø 52
Not mounting Not mounting
3.4.3.2 CONNECTION OF THE DUAL INLET-OUTLET KIT
The exhaust of flue gas and air inlet can also be made using a dual kit, the diameter of
the inlet and outlet pipes being of Ř80 mm (the air inlet pipe is separate from the flue gas
pipe).
The dual kit is composed of: adaptor, elbow without flange for air inlet, elbow without
flange for flue gas exhaust, air inlet terminal, flue gas exhaust terminal, and upon the
beneficiary’s request extensions can be delivered in order to reach to a maximum allowed
length of 5 m.
The connection is made as follows:
- all gaskets are mounted in their own notches.
- the adaptation module is fixed on the top cover of the pressurized room with 4 screws,
taking care that between the cover and the module the related gasket is positioned.
- the elbows are fixed on the adaptation module taking care that between the module and the
elbow the related gasket be positioned. The wall ornament gaskets are mounted as well.
- then, the tubes are fixed by the coupling with sealing gaskets on the elbow.
For each extension elbow instal
led at 90
0
, the maximum
length
of the
inlet/outlet tubing is reduced by 0.5 m. In no cases, the total length of the kit,
with extensions, will not exceed the equivalent of 5 m.
Components:
1 – Ø80 plastic terminal
2 – Ø80 mm outlet/inlet
tube
3 - Ø80 wall ornament
4 – Ø80x8 gasket
5 - 90
0
&80 mm elbow kit
6 - & 80 mm adaptor
7 – Ø80x8 gasket
8 - test-point
9, 10 – self-cutting screws

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Table 5: Information for installing an Ø 80/80 mm dual kit
Minimum length (except for the first elbow) = 1 m
Maximum allowed length = 5 m
Factor for reducing the 90
0
elbow = 0.5 m
Factor for reducing the 45
0
elbow = 0.25 m
Boiler type
Diafragma de utilizat la :
C32SPV24MEFA C32SPV24MEFB C32SPV31MEFA C32SPV31MEFB
1 m kit Ø44 Ø44
Not mounting Ø 48
2 m kit Ø44 Ø44
Not mounting Ø 48
3 m kit Ø44 Ø44
Not mounting Ø 48
4 m kit Ø44 Ø44
Not mounting Ø 48
5 m kit Ø44 Ø44
Not mounting Ø 48
3.4.3.3 CONNECTING THE BOILER WITH NATURAL DRAUGHT TO THE
STACK
The connection for the exhaust of flue gas is connected, on the shortest way, to the
stack (evacuation column). The flue gas exhaust tubing is thermally insulated, as the case
may be, in order to avoid the condensed water.
The stack is an important part in the operation of the boiler, and must meet the
following requirements:
• must be made of waterproof material and resistant at the temperature of the gas and of the
condensed water;
• must have a sufficient mechanical endurance and a reduced conduction of heat;
• must be absolutely air-tight in order to avoid the cooling caused by the passive air flow;
• its direction must be as vertical as possible and the part that leads to the roof must
efficiently and permanently ensure the evacuation of flue gas;
• the diameter of flue gas discharge opening is of Ø125 mm;
In order to view the mounting distances, please refer to annex 5B in this manner:
• starting from the boiler, the stack must be vertical on a length equal to minimum 2
diameters ((2xØ125), before being bended.
• the part under the horizontal from inside the building must as small as possible (not longer
than 1 m);
• should not have more than two elbows;
• must ensure the removal of flue gas from the boiler only;
• the part from outside the stack, which is linked with the intake block, must be above the wall
of the building at a height of minimum 2 diameters (2xØ125).
3.4.4 CONNECTION TO WATER AND HEATING INSTALLATION
3.4.4.1 CONNECTION TO THE HEATING INSTALLATION
The heating system will be designed by the qualified and authorized personnel
according to legislation, for the mounting/installing activities, observing the norms for the
design and execution of the heating installations.

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For the correct sizing of the heating system, the residual level value must be
evaluated depending on the required flow (capacity), in accordance with the values
presented on the circulating pump diagram.
Indication: Please refer to annex 4 “Hydraulic characteristic of the pump”!
The boiler is connected at the heating installation by means of the A and E
connections, please see Annex 3 “Hydraulic diagram” and Annex 1B “Layout of
connections”.
Between the turn and return connections of the heating installations and the central
heating turn and return connections the appropriate sealings are made and these sealings
are checked by using specific methods.
Regularly check the pressure of the water from the heating system and
check – when the installation is cold – that the pressure ranges between 1 ÷ 2
bars.
If the pressure is under the minimum, fill the boiler with water by opening
the tap under it. Once the indicated pressure value was reached, close the tap.
If the pressure difference is very high, it is possible that the installation
has water leaks. In this case, contact an installation technician.
AVOID IMPURITY
DEPOSITS!
On the return of the heating
circuit, it is required to mount an impurity
filter.
If the sealings are not adequate and water leaks
appear, take care not to scald yourself. The temperature of
the water on the turn/return can cause skin scars.
3.4.4.2 CONNECTION TO DOMESTIC COLD WATER AND DOMESTIC HOT
WATER CIRCUIT

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AVOID IMPURITY
DEPOSITS!
On the cold water inlet connection
it is required to mount water softener filters
and impurity filters.
The maximum limit of water hardness at the
inlet in the boiler will be of maximum 5°F
(French degrees), the equivalent of 50 mg CaCO
or a quantity equivalent with other Ca and Mg
salts!
3.5 FILLING, VENTING/EMPTYING THE HEATING INSTALLATION
3.5.1 FILLING AND VENTING OF THE HEATING INSTALLATION
In order to fill the heating installation, open the filling tap (black colour), located under
the boiler, by unthreading it in the counter clockwise direction (please see the below picture).
- the central heating circuit is loaded until the necessary pressure is reached.
Indication: The loading and operation with thermal agent of the heating circuit is
made at a pressure of 1.5 bars. The heating leads to thermal extension that modifies
the pressure.
- after reaching the required pressure in the installation, the filling tap of the central
heating installation is closed by threading it in clockwise direction.
- the venting of the heating system is performed by means of the air remover of the pump.
- the pump is vented by means of the unlocking screw indicated in the below picture.
- press the J5 key POWER (please see chapter 5).
- press the J7 key WINTER /SUMMER to switch the boiler to the WINTER operation
mode (please see chapter 5). The pump of the boiler will start, the boiler actuates the
burner. After a few seconds, the electronic protection blocks the boiler, because the gas
supply is interrupted. Reset the appeared error message.
- let the pump operate until the air is completely evacuated from the installation.
- vent the radiators.
- add water in order maintain the recommended pressure.
THE FILLING TAP
The tightness of the entire system is checked. If there are leaks, the appeared
problems are solved.
DESCHIS
SCREW FOR
UNLOCKING AND
VENTING THE PUMP
OPEN

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3.5.2 ADDING WATER IN THE HEATING INSTALLATION
If the pressure of the thermal agent from the heating circuit drops under the
recommended working pressure (1.560.5 bars), please follow the next steps:
- open the filling tap (black colour), located under the boiler, by unthreading it in the
counter clockwise direction (please see the picture below).
- load the central heating circuit until the necessary pressure is reached (1.56
66
60.5
bars).
- after reaching the required pressure in the installation, the filling tap of the central
heating installation is closed by threading it in clockwise direction.
3.5.3 EMPTYING THE HEATING INSTALLATION
If you wish to empty the heating installation, unthread the filling tap (please see the
picture above), but first turn off the running water supply of the boiler, then open a tap from
the domestic hot water consumer and let the water from the installation to run off.
3.6 MOUNTING THE AMBIENT THERMOSTAT
The mounting of the ambient thermostat is made on one of the interior walls of the
housing.
Do not mount the thermostat near heat sources, do not expose it to direct sunlight,
near cold/hot water pipes, or in areas where it might be influenced by the air streams.
The ambient thermostat and the outdoor sensor are used for optimizing the
consumption of electricity and natural gas and to create an increased comfort in the
enclosure to be heated, respectively the building that uses the appliance.
The placing of the ambient thermostat is made so that its use ensures a maximum
comfort. For this, we recommend placing the ambient thermostat at a 1.5 m height from the
floor of the room, in the coldest space of the room.
The procedure to connect the ambient thermostat is performed by AUTHORIZED
PERSONNEL!
3.7 MOUNTING THE OUTDOOR TEMPERATURE SENSOR
The placement of the outdoor temperature sensor is made on the exterior of the
building.
Depending on the outdoor temperature and the dispersion coefficient, the working
temperature of the thermal agent will increase or drop.
The use of an outdoor temperature sensor makes possible the enabling, by the
AUTHORIZED PERSONNEL, of the “climatic compensation” function, which leads to
the increase of the comfort level and to the reduction of the gas consumption when
the boiler operates in “Winter” mode.
In this case, the water temperature from the primary - turn circuit is optimized depending
on the climatic conditions. Thus, when the outdoor temperature increases, the water
temperature from the primary –turn circuit drops according to the climatic compensation
curve (please see the diagram below). The positions of points A, B, C and D, which define
this curve, are established as follows:
- The position of point A: is established by the set value of the water temperature form
the primary – turn circuit (central heating);

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- The position of point B: is established by the minimum value which can be set of the
temperature on the central heating. This value is of:
- 30
0
C – for radiator-based heating;
- 15
0
C – for underfloor heating;
- The position of point C: is established by the authorized service personnel;
- The position of point D: is established by the authorized service personnel.
Temperatura AT setată °C
Diferite maxime setate
Climatic compensation curve
As example, the position of points A, B, C and D is established having the following
values:
- A: 75
0
C
- B: 40
0
C
- C: 20
0
C
- D: -10
0
C
Analysing the climatic compensation curve established by these values, the following
can be observed:
If the outdoor temperature is under “-10
0
C”, then the value of the water temperature
on turn-heating will be of 75
0
C;
- If the outdoor temperature is under “-20
0
C”, then the value of the water