Demir Dokum HK 50 M Reference manual

HK 50 M –HK 100M –HK 100S SERVICE BULLETIN
SERVICE BULLETIN -
MAXICONDENSE WALL TYPE
CONDENSING BOILER
07/03/11

HK 50 M –HK 10M –HK 100S SERVICE
BULLETIN
TABLE OF CONTENTS
1. PRODUCT INTRODUCTION...............................................................................................................................................4
1.1. Product Specific Innovations.........................................................................................................................................4
1.2. Product Types ............................................................................................................................................................. 4
1.3. General Information .....................................................................................................................................................4
1.4. Warnings regarding installation and use of the device and general warranty conditions…..………………………4-5
1.5. Products that can be used together ...............................................................................................................................5
1.6. Boiler packaging, registry label and gas label identification - Device technical information..................................... 5
1.6.1. Packaging label....................................................................................................................................................... 6
1.6.2. Device registry label............................................................................................................................................... 6
1.6.3. Gas label ................................................................................................................................................................ 6
1.6.4. Technical Specifications Table.................................................................................................................................
1.7. Introduction to basic parts of the device ...................................................................................................................... 7
1.7.1. Burner ........................................................................................................................................................................ .7
1.7.2. Main heat exchanger .............................................................................................................................................. 8
1.7.3. Combustion chamber ............................................................................................................................................. 8
1.7.4. Flame ignition and detection electrode ..................................................................................................................8
1.7.5. Flow and Return NTC probes…………………………………………………………………………………......9
1.7.6. Safety thermostat .....................................................................................................................................................9
1.7.7. Flue probe ........................................... .................................................. ............................................................... 9
1.7.8. Fan ................................................. .................................................. .................................................. ............... 10
1.7.9. Gas valve ............................................... .................................................. .................................................. ........ 10
1.7.10. Venturi ................................................. ............................................................................................................... 10
1.7.11. Condense collection siphon ..................................................................................................................................11
1.7.12. Control panel ........................................................................................................................................................11
1.7.13. Water differential pressure switch........................................................................................................................ 11
1.7.14. Safety valve ......................................................................................................................................................... 12
.DEVICE SAFETY COMPONENTS DISPLAY ................................................................................................ 12
1.7.15. Introduction to the control panel…………………………………………………………………………………12
1.7.16. Display mode ....................................................................................................................................................... 14
1.7.16.1. Display - Display mode ........................................................................................................................................14
1.7.16.2. Display - Reading mode........................................................................................................................................15
1.7.16.3. Monitor mode (Used to control operation values for each heating unit)………………………………………...16
2. WORK FLOW FOR START-UP OF THE DEVICE............................................................................................... 17
2.1. Start-up operation ..................................................................................................................................................... 17
2.2. System water filling and draining .............................................................................1 Error! Bookmark not defined.
2.2.1. Water filling.............................................................................................................................................................. 18
2.2.2. Draining the water in the device ...............................................................................................................................18
2.2.3. Draining the water in the installation .........................................................................................................................19
2.3 First ignition ................................................................................................................................................................ 20
2.4. CONTROLS TO BE PERFORMED AFTER OR DURING THE FIRST IGNITION .......................................... 24
3. BOILER OPERATION ................................................ ................................................................................................. 25
3.1. FACTORY SETTINGS AND FUNCTIONAL PARAMETER SETTINGS........................................................... 25
3.2. CENTRAL HEATING PARAMETERS……………………………………………………………………………26
3.2.1. Setpoint_T_CH_High Setting of high temperature circuit (parameter 1)…………………………………..............26
3.2.2. Setpoint_T_CH_Low- Setting the low temperature circuit-……………..…………………………………….…....27
3.2.3. Central System Priority……………………………………………………………………………………………..27
3.3. DOMESTIC HOT WATER PARAMETER SETTINGS…………………………………………………………..28
3.4. MAIN FUNCTIONS……………………………………………………………………………………………….28
3.5. PARAMETER SETTINGS…………………………………………………………………………………………30
3.5.1. Password settings…………………………………………………………………………………………………30
3.5.2. Parameter list…………………………………………………………………………………………………….. 30
3.6. GAS SETTINGS…………………………………………………………………………………………………..35
3.6.1. CO2 setting for maximum power…………………………………………………………………………………36
3.6.2. CO2 setting for minimum power …………………………………………………………………….…………..36
3.6.3. Calibration settings ................................................................................................................................................36
3.7. GAS EXCHANGES ...............................................................................................................................................36
3.8. BURNER PRESSURE SETTINGS …………………………………………………………………………38
3.9. COMBUSTION CONTROL ....................................................................................................................................40
3.10. FAN SPEED SETTING .......................................................................................................................................... 41
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3.11.
THERMALEGULATION SETTING ............................................... ......................................................................... 41
ADDITIONAL FUNCTIONS FOR CASCADE MANAGEMENT ................................................................... 47
3.12. ADRESSING SETTINGS FOR CASCADE CONNECTIONS ............................................................................... 53
3.12.1. Master card settings.............................................................................................................................................. 53
3.12.2. Slave card settings ............................................................................................................................................... 53
3.12.3. Slave card interface settings................................................................................................................................. 53
3.12.4. Slave PCB inputs.................................................................................................................................................. 53
3.12.5. Addressing settings .............................................................................................................................................. 54
4. DECOMMISSIONING THE BOILER ....................................................................................................... ……..56
4.1. TEMPORARY DECOMMISSIONING ................................................................................................................... 56
4.2. LONG-TERM DECOMMISSIONING .................................................................................................................... 56
5. MAINTENANCE................................................................................................................................................... 58
5.1. NORMAL MAINTENANCE PROCESS..................................................................................................................58
5.2. FAILURE MAINTENANCE PROCESS.................................................................................................................. 59
5.3. PERIODICALLY PROGRAMMED MAINTENANCE TABLE ............................................................................ 59
5.4. TOOL KIT REQUIRED FOR MAINTENANCE .................................................................................................... 59
5.5. SAFETY RULES....................................................................................................................................................... 60
5.6. ACCESSIBILITY TO COMPONENTS .................................................................................................................. 60
5.6.1. Dismounting the front sheet-metal group ............................................................................................................ 60
5.6.2. Dismounting the control panel…………………………………………………………………………………...61
5.6.3. Dismounting the electronic card .......................................................................................................................... 62
5.6.4. Dismounting the ignition electrode....................................................................................................................... 63
5.6.5. Dismounting the venturi........................................................................................................................................ 64
5.6.6. Dismounting the fan.............................................................................................................................................. 64
5.6.7. Dismounting the burner and cleaning the combustion chamber…………………………………………………65
5.6.8. Dismounting the condensate siphon …………………………………………………….……............................66
5.6.9. Dismounting the NTC sensors ………..………………………………………………………………….…….. 67
5.6.10. Dismounting the safety thermostat……………………………………………………………………………….68
5.6.11. Dismounting the waste gas sensor…………………………………………………………………………..……69
5.6.12. Dismounting the gas valve……………………………………………………………………………….……...70
5.6.13 . Dismounting the water pressure switch……………………………………………………………………….....71
6. TROUBLESHOOTING.................................................................................................................................................. 72
6.1. ERROR MODE ......................................................................................................................................................... 72
6.2. CONTINUOUS ERROR LOCKING ......................................................................................................................... 72
6.3. LOCKING CODES .................................................................................................................................................... 72
6.3. UNEXPECTED ERRORS AND MEASURES ......................................................................................................... 74
7. INSTALLATION .................................................................................................................................................................. 77
7.1. DEVICE HANDLING AND ACCESSORIES BEFORE DELIVERY....................................................................... 77
7.2. BOILER AND CASCADE SYSTEM INSTALLATION ROOM .............................................................................. 77
7.3. ADAPTATION TO PREVIOUS DEVICES ............................................................................................................... 78
7.4. DEVICE INSTALLATION SEQUENCE ................................................................................................................... 79
7.5. HYDRAULIC CONNECTIONS.................................................................................................................................. 80
7.6. GAS CONNECTIONS.................................................................................................................................................. 90
7.7. ELECTRICAL CONNECTIONS ................................................................................................................................. 91
7.8. FILLING WATER ........................................................................................................................................................ 92
7.9. WASTE GAS DISCHARGE AND COMBUSTION AIR SUPPLY ........................................................................... 94
7.9.1 Maximum length of the flue pipe and cautions ............................................................................................................. 94
7.9.2 Layout of condensate drain ........................................................................................................................................... 98
7.9.3 Valve................................................................................................................................................................................ 99
7.10. OUTDOOR AIR SENSOR CONNECTION ................................................................................................................ 100
APPENDIX A-Main components .......................................................................................................................................... 102
APPENDIX B - Dimensions and Weight................................................................................................................................ 103
APPENDIX C - Technical data table...................................................................................................................................... 104
APPENDIX D - Hydraulic circuit........................................................................................................................................... 105
APPENDIX E- NTC sensor positions .................................................................................................................................... 106
APPENDIX F- Pumps ............................................................................................................................................................ 107
APPENDIX G- Electrical diagrams........................................................................................................................................ 108
APPENDIX H - Electrical connections (System, outdoor air sensor, room sensor, remote control)..................................... 114
APPENDIX I - Accessories ................................................................................................................................................... 134
.
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1. PRODUCT INTRODUCTION
1.1. Product Specific Innovations
Premix burner providing constant gas-air mixture.
16.3 - 100 kW thermal power range for HK 100 M and HK 100 S products.
Capability to obtain 400 kW power from the cascade system formed by 8 units.
Capability to use B1 polypropylene waste gas piping thanks to maximum 80 ºC waste gas temperature.
Up to 30 meters of clean air and waste gas pipe connection for the HK 50 M product.
Optional water and gas connection kits.
Error reporting with microprocessor-control card and LEDs.
Control of up to 60 units within the cascade system, with the electronic control unit. Frost
protection safety that runs in coordination with the room thermostat or the device
temperature.
Capability of controlling low (30-50 ºC) and high temperature (50-80 ºC) installations with the room
thermostat.
Capability of prioritizing between adaptation heating and domestic water installations with the outdoor air
sensor. Capability of prioritizing the domestic water installation.
Capability of appointing two different modes of
operation to two different installations.
Equal time operation of units in cascade systems.
In the event of a failure in the master device, capability to control the slave devices in an
emergency. Legionella protection feature entry via remote control system.
1.2. Product Types
The product is available in 3 types. These are HK 50 M, HK 100 M and HK 100 S models.
HK 50 M and HK 100 M models are devices that can operate and control other devices connected to itself in
cascade systems referred to as the master. HK 100 S model is a device that can operate in connection with a master
device. Numbers 50 and 100 in the model names indicate the thermal load capacity of the device in kW. Letter M
indicates that the device is of master type and the letter S indicates that the device is of slave type.
1.3. General Information
HK 50 M, HK 100 M and HK 100 S are condensing wall type boilers for heating purposes, that run with natural gas or
LPG and which have a wall-mounted premix burner, with one heating unit (50 M model) or two heating units (100 M
- 100 S models). Devices compatible with cascade systems can work on the same heating systems by interconnecting
via a station (with master device). Each heating unit has a heating power of 48.5 kW in case of heating from 30 ºC to
50 ºC. It allows modulation in the range of 30-100% and achieves 108.7% efficiency. Low waste gas temperature
allows using up to 30 meters of B1 polypropylene waste gas piping with a diameter of 50 mm for the HK 50 M
product. For every 90º bends, 2m should be deducted from the total waste gas piping.
With the electronic card, it can communicate rapidly with systems providing different types of heating and domestic
water, so that personal preferences can be applied in cascade systems.
1.4. Warnings regarding installation and use of the device and general warranty conditions
- Installation of the equipment must be performed by an authorized Dealer of Demirdöküm or by
DemirDöküm Installation Service.
- Necessary electrical connections for the device must be made by an Authorized Demirdöküm Service.
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- It is recommended to make periodic maintenance contracts with Demirdöküm Authorized
Services in order to ensure that the devices run efficiently continuously.
- After opening the packaging boxes, make sure that the devices are not damaged.
- Ensure that the safety valves and components are properly connected to the installation.
- Device operation pressures are 1-1.5 bar. System pressure cannot exceed 3 bars.
- If the unit will not be operated for a long time, Authorized Demirdöküm Service must be called to ensure
that water in the installation is completely discharged. Before this process, the Service;
will cut off the system's electrical connection.
will cut off gas and water connections connected to the heating circuit.
In order to prevent freezing, will drain the water in the system to the drainage.
- If gas leakage is felt in the device, gas valve is closed first. Electric knobs and other electrical devices are
not opened. No action to give out flames or sparks is taken. The windows are opened and fresh air is
provided in the environment. The gas company official or Demirdöküm authorized service is called.
- It is recommended to use special waste gas piping with the device. If the waste gas system recommended
by DD is not used, the rules and tests defined by gas companies for the waste gas system are followed/made
and the flue and waste gas system can be made by the companies approved by the gas company.
- In Cascade applications, it is mandatory to use the flue closing valves provided by DD.
- Ventilation conditions in the installation sites of the devices, upper and lower vent-hole measures
according to the device cascade powers are defined in the device operating instructions and in this booklet.
Ventilation measurements below the specified dimensions are not acceptable.
- If HK 50 M will be used as a single unit, the, the system can have a PP piping with a total length of
30 m, with a diameter of 50 mm. For every 90º bends, 2m should be deducted from the total length.
- The device is allowed to be installed in the indoor environment. It is not suitable for outdoor installation.
- Condensate must be connected to the waste water system. In cascade applications over 200 kW, it is
recommended that condensate is not transferred to the waste water system and subjected to an additional
neutralization process. (It must be provided as PH: 6-8.)
- Do not place flammable or explosive materials in the installation site of the devices.
- Start-up must be done by a DemirDöküm authorized service.
- Interventions to the device to be performed by the DemirDöküm authorized service during the warranty
period (2 years) or in case of spare parts replacement not provided by DD, the warranty conditions of the
device will be discharged.
1.5 Products that can be used together
The unit can operate in coordination with high temperature (80ºC-50ºC), low temperature (50ºC-30ºC)
and domestic water heating systems. Accordingly, hot water is supplied by using the boiler. Circuit
diagrams for related systems have been given in the next sections.
1.6. Boiler packaging, registry label and gas label identification - Device technical
information
1.6.1 Packaging labeling: This label includes CE0085 marking, product type (example Maxi Condense 100
M), stocking marking (up to 2 points on top of another) and other protection markings and DD logo.
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1.6.2. Device registry label:
Technical and performance data of the device is given.
1.6.3 Gas label:
This label is on the side surface of the rear frame plate. It describes the type of gas in the country where
the device will be used.
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1.6.4. Technical Specifications Table
Definition
Maxicondense
Unit
HK 50 M
HK 100 M
HK 100 S
Fuel type
G20 - G30 - G31
Device category
II2H3 +
Device type
B23 - C63
Thermal load (Min. - Max.)
16.3 - 50
16.3 - 100
16.3 - 100
KW
Thermal power (Min. - Max.)
15 - 45
15 - 90
15 - 90
KW
Thermal power (80ºC / 60ºC)
44.2
88.3
88.3
KW
Thermal power (50ºC / 30ºC)
48.5
96.8
96.8
KW
Efficiency (80ºC / 60ºC)
98.2
98.2
98.2
%
Efficiency (50ºC / 30ºC)
107.7
107.7
107.7
%
Efficiency in 30% load (50ºC /
30ºC)
108.7
%
Flue loss (While device is active)
1.3
%
Flue loss (While device is inactive)
0.1
%
Circuit heat loss
0.5
%
Waste gas temperature
(Installation return temperature) +
5
ºC
CO2 (Min. - Max.)
8.4 - 9.4
%
CO (Min. - Max.)
< 10 - 120
p.p.m.
NOx (Min. - Max.)
< 10 - 20
p.p.m.
NOx class
5
CH max. operating pressure
6
bar
Max. installation outlet temperature
90
ºC
Installation temperature setting
range
20 –80 (± 3)
ºC
Heat exchanger water capacity
5
10
10
liter
Electric supply
230 ~ 50
V ~ Hz
Maximum electricity consumption
169
333
333
W
Electrical protection class
X0D
IP
Condensing amount
7.2
14.4
14.4
kg/h
1.7. INTRODUCTION TO BASIC COMPONENT OF THE DEVICE
1.7.1 Burner:
Burner; full premix, micro-flammable and low-emission burner. After burner has been installed in the
exchanger, a fan group is placed onto it and it is connected to the heat exchanger body with 4 screws
(Figure 1.4)
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1.7.2 Main heat exchanger
In order to bond 321 stainless steel pipe on the copper pipe inside the exchanger and increase the heating
surface of the pipe, the bimetallic pipe is composed of threads with specific pitches. The heat exchanger is
formed by wrapping the outer body around the inner wall. (Figure 1.5)
1.7.3 Combustion chamber
The cylinder shaped upper valve part is the body made of aluminum casting, including a heat exchanger
within. (figure 1.6) HK 50 M type has 1 piece, HK 100M and HK 100S types have 5 pieces. (Figure 1.5)
1.7.4 Flame ignition and detection electrode
The electrode is mounted on the upper left side of the combustion chamber. Its function is to enable ignition
by creating a high-voltage spark near the burner. Its second task is to detect the presence of flame (Figure
1.7).
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1.7.5 Flow and Return NTC probes
With the sensors, the temperature measurements on the flow and return lines of the combustion unit are
read on the electronic card.
(Figure 1.8)
1.7.6 Safety thermostat
The safety thermostat can be set again manually. It's on the flow line. It is activated when water flow
temperature is 90OC and closes the burner. (Figure 1.9)
1.7.7. Flue probe
It is under the heat exchanger. It is activated when the waste gas temperature exceeds 80oC and closes the
burner. (Figure 1.10)
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1.7.8. Fan
It enables the air gas mixture to reach the burner and combustion chamber by means of the venturi (air gas
mixer). The other task of the fan is to send the waste gas to the waste gas system. (Figure 11)
1.7.9. Gas valve
It is connected to the venturi above the combustion chamber. It has an aluminum casting body. There are
two safety valves electrically. It runs as electrically parallel and mechanically serial connected.
1.7.10. Venturi
Venturi is an aluminum material. By creating a venturi, it sends air and gas mixture to the burner via the
fan. Figure. 1.13
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1.7.11. Condense collection siphon
It's under the combustion chamber, on the right side. It is made from composite material. (Figure 1.14)
1.7.12. Control panel
In HK 50 M and HK 100 M model products, it has one master card (main PCB) and one or two slave PCBs.
HK 100 S model has 2 slave PCBs. In cascade applications, with HK 50 M and HK
100M, it controls the slave cards connected to the whole system via a BUS connection.
The device is controlled by a microprocessor and a self-diagnosis based system. It is possible to connect 60
heating units to the system. In cascade applications, besides device heating, it is possible to make fast
connection to 2 different zones and to domestic hot water systems. (Figure 1.15)
17.13. Water differential pressure switch
It is under the unit combustion chamber. If the flow water flow rate in one unit is below 500 l/h, it turns off
the system.
When there is no water in the system, it turns off the burner and protects the system. (Figure 1.16)
Working threshold;
ON system water flow rate > 700-720 l/h (p 50-55 mbar)
OFF system water flow rate < 540-560 l/h (p 35-40 mbar)
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1.7.14. Safety valve
It is on the water flow pipe. It must be connected to the waste water system with a drainage hose. It
protects the hydraulic circuit at high pressures caused by overheating of the primary circuit. It is set to 6
bars. (Figure 1.17)
Introducing the Safety Components of the Device
Safety Thermostat: It has manual reset. When 90
°C is exceeded, it is activated and turns off the
device.
Waste Gas Temperature Sensor: When the waste
gas temperature rises above 80 ºC, it turns off the
system.
Installation Circuit Protection: It prevents the
device from working with insufficient water with
installation flow and return temperature sensors
and water differential switch.
Frost Protection Function: It is activated if the
waste gas temperature drops below 5 ºC.
1.7.15 Introduction to the control panel
HK 50M
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HK 100M
HK 100S
1 First heating unit switch
Operation mode selection button (Enables
entering into the Parameter menu and the
system display menu.
2
3 Reset button (Master)
4 Signal indicating that the system is powered
5 Boiler is disabled
6 Parameter selection button
7 Display
8 Memorizing button
9 Value increase button
10 Value decrease button
11 Second unit heating switch
12 << Slave power signals
-low flash: stand-by state
-high flash: ignition on
-continuous light: flame is observed, system is active
13 Slave boiler is disabled
14 Reset button (slave)
15 board card
16 Main boiler on/off switch
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1.7.16. DISPLAY (Display Mode)
9. Increases the relevant value.
3. Enables to reset the
device when the device
is disabled in some way.
10. Decreases the relevant
value.
8. Records the selected value.
2. Enables entering into the
parameter menu and the system
display menu.
6. Enables system selection
to see the relevant values.
If the above 5 (error) lamp lights red, this indicates that the system is disabled due to an error. (If the
system is normal, the system is activated by pressing the Reset key (14) on the master and slave units)
1.7.16.1 Display - display mode:
Description Display
No request for heating or water heating Single digit on left = O
(The two digits on the right indicate the water flow temperature (Example T1=30oC)
First or both units are in heating Single digit on left = 1
(The two digits on the right indicate the water flow temperature (Example T1=80oC)
There is a request from water heating or at the same time there is water heating/heating. (There is a flash while Left digit =
1 and below) (The two digits on the right show the water flow temperature (Example T1=80oC)
No request for heating or water heating Single digit on left = O
(The two digits on the right indicate the water flow temperature (Example T1=30oC)
In the frost protection function
Heating in the second unit Single digit on left = 1
(The two digits on the right indicate the water flow temperature (Example T1=80oC)
Heating or domestic water heating is not required
(The two digits on the right indicate the water flow temperature (Example T1=30oC)
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1.7.16.2 Readout mode
(Temperature values and operational states in various circuits)
Key is pressed (the point next to I is turned off (press once), then continue with the menu. The following data are
observed in order.
Description Display
1. The highest flow water temperature in the heating circuit T1
Example T1: 80oC
2.Domestic water temperature T3
Sample: Boiler temperature T3: 50oC
3. Outdoor air sensor temperature T4
Sample: T4: 7oC
4. Second circuit water flow temperature T6
Sample : 2nd zone floor heating T6: 50oC
5. Room thermostat closed or open for 1st circuit
OFF = ignition on
ON = ignition off
6. Room thermostat closed or open for 2nd circuit
OFF = ignition on
ON = ignition off
7. 0-10 V analog input
Sample 5.5 V-10 V
8. Operating position of the mixing valve
Off (_C), on (80), standby (_ _)
9. Operating position of the main pump
1.0 is not working, 1.1 working.
10. Operating position of the boiler pump
2.0 is not working, 2.1 working.
11. Operating position of the second circuit pump
3.0 is not working, 3.1 working.
Press OK key to exit the reading mode. If no key is pressed, then the Display mode will automatically
be displayed after 5 minutes.
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1.7.16.3 Monitor mode (It is used to control operation values for each heating unit and 1-60
addresses can be defined.)
Press "Set/Esc" key for 5 seconds to see U 01 on the display, then switch to the following other modes by
pressing the key.
Operation Display
1. High temperature circuit (1st circuit) boiler is active (80oC)
2. Press the "Set/Esc" button for 5 seconds to read the 1st heating unit
3. Press the "+" or "-" key to access the other heating units. (Example 19th unit)
4. Press the key and access to the "reading" values of the heating unit accessed in the third stage.
For example, hereshows the flow water temperature of the 19th unit.
As a result, after entering the desired unit in the 3rd stage, the values of the respective heating unit are accessed with the key.
5. Press the "OK" button to exit monitor mode.
If no key is pressed for 5 minutes, the display returns to the 1st position.
Value Screen
1.
Water flow temperature Example 70 oC
(1)
2.
Water return temperature Example 50 oC
(2)
3.
Waste gas temperature Example 60 oC
(5)
4.
Ionization current (index 0-90) Example: index 44
5.
Fan PWM signal (%)
(99 is read if PWM = 100) Example 66 (7)
6. Flow water temperature is on/off (not active)
Sample contact open (F)
7. Pump or motorized valve on/off (8)
Example pump on, off
8. Maximum ionization current (0-90) (I)
Example 80
9. Total running time of the unit (0-9999) (h)
(Example, for a unit running 8050 hours, 80 and 50 are written one on top of another)
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2. WORK FLOW FOR START-UP OF THE DEVICE
2.1 START-UP OPERATION
Gas connection:
- The device works with natural gas or LPG. Gas connections must be made in accordance with the relevant
standards.
Following points must be observed before making connection:
- The device to be connected and the gas type must be the same.
- Connection pipes must be clean and not obstructed.
- Gas connection pipes must be the same size or larger than the gas inlet (3/4"); the pressure drop
during this time must be less than the pressure drop between the gas line and the device.
- After gas connections have been made, it must be checked that there are no leaks at the joints.
- A suitable filter should be mounted on the gas inlet.
- Make sure the gas valve or valves are open.
- Use the correct gas for the unit (In LPG applications, LPG set must be installed in the device).
-The system must be filled cold and set around 1.5 bars.
-Expansion tank must be connected to the system by calculating that it is the proper size.
-Electrical connections must be made by suitable and qualified personnel.
Pump connections
Pumps must be connected to the system with suitable fasteners in order to be easily accessible in
manual emergence situations.
- Before operating the pumps, they must be checked by turning the screwdriver after
removing the front cover and the screw.
-Protect electrical equipment from possible water spills before loosening and removing the pump's
screw.
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HK 50 M –HK 10M –HK 100S SERVICE BULLETIN
2.2 FILLING AND DISCHARGING THE SYSTEM
2.2.1 Filling
-Open valves no (1) (Figure 2.4)
- Turn on air discharge air relief cocks (2) (Figure 2.5)
-If there is a 2-way valve in the system, bring the position to MANUAL position (It is the
handle below the two-way valve (Fig. 2.6))
- The system will be filled with water until the pressure reaches 1.5 bars.
- The filling valve is closed.
- Two way valve arm is set to "AUTOMATIC" position. (This is done for all devices.
- Make sure that automatic air relief cocks of all devices are loose.
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HK 50 M –HK 10M –HK 100S SERVICE BULLETIN
2.2.2. Discharging the water inside the device
The main power switch is turned OFF before draining the system water.
The valves under the devices are closed.
In each unit, plastic hoses are connected with 2-way valves and water is drained. / Electrical
equipment must be protected from the discharged water.
2.2.3. Discharging the water inside the installation
-Make sure the valves are open in the water circuit
-Connect the drain hose to the drain plug in the return line (Figure 2.10 (component 5))
-Switch the 2-way valve of each heating unit to the “MANUEL” position.
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HK 50 M –HK 10M –HK 100S SERVICE BULLETIN
-After draining water in each unit is completed, the 2-way valves are switched to the
"AUTOMATIC" position. (Figure 2.11)
2.3. FIRST IGNITION
- Turn the main switch to "ON" position.
-Turn all 1and 2line switches in the system to the "ON" position. (Figure 2.13)
-The 3and 4lamps on the card will "flash". (Figure 2.13)
-5 On the display screen, the highest flow water temperature will be displayed.
-In the high and low flow water temperature zones, the room temperatures will be set to 20 oC
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