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Section 1 : TECHNICAL SPECIFICATIONS .................................................................................................................. 3
Section 2 : INTRODUCTION .......................................................................................................................................... 4
2.1 LOCAL INSTALLATION REGULATIONS ............................................................................................................ 4
2.2 CORROSIVE ATMOSPHERE ............................................................................................................................. 4
2.3 SHIPMENT INSPECTION ................................................................................................................................... 4
2.4 TO VERIFY ......................................................................................................................................................... 4
Section 3 : INSTALLATION ............................................................................................................................................ 5
3.1 SAFETY MEASURES ......................................................................................................................................... 5
3.2 LOCATION .......................................................................................................................................................... 5
3.3 CLEARANCES .................................................................................................................................................... 5
3.4 PIPING INSTALLATION ...................................................................................................................................... 6
3.5 BOILER COMPONENTS..................................................................................................................................... 6
3.6 SYSTEM SETUP ................................................................................................................................................. 9
3.7 HEATING WATER CIRCUIT ............................................................................................................................... 9
3.7.1 Connecting the heating water piping............................................................................................................ 9
3.7.2 Flow-check valve ......................................................................................................................................... 9
3.7.3 Pressure relief valve .................................................................................................................................... 9
3.7.4 Operating pressure control & expansion tank ............................................................................................ 10
3.7.5 Automatic Air Vent ..................................................................................................................................... 10
3.7.6 Heating pump ............................................................................................................................................ 10
3.7.7 Low temperature heating (Radiant floor) ................................................................................................... 10
3.8 DOMESTIC HOT WATER CIRCUIT ................................................................................................................. 10
3.8.1 Connecting the domestic hot water piping ................................................................................................. 10
3.8.2 Expansion tank on the cold water supply line ............................................................................................ 11
3.8.3 Domestic hot water pressure relief valve ................................................................................................... 11
3.8.4 Thermostatically controlled mixing valve (included) ................................................................................... 11
3.9 BOILER WIRING: .............................................................................................................................................. 12
3.9.1 Main power supply ..................................................................................................................................... 12
3.9.2 Heating pump wiring .................................................................................................................................. 12
3.9.3 Room thermostat wiring ............................................................................................................................. 12
3.9.4 Dual-Energy wiring with an auxiliary boiler ................................................................................................ 13
3.10 WIRING DIAGRAMS ....................................................................................................................................... 14
Section 4 : CONTROL SET UP .................................................................................................................................... 16
4.1 INTRODUCTION ............................................................................................................................................... 16
4.2 LIQUID CRYSTAL DISPLAY (LCD) NFORMATION ......................................................................................... 16
4.3 INTERFACE OPERATION ................................................................................................................................ 17
4.4 COMBOMAX MODE OPERATION ................................................................................................................... 17
4.5 DOMESTIC HOT WATER DEMAND PRIORITISATION. .................................................................................. 17
4.6 CONTROL SET-UP ........................................................................................................................................... 17
4.7 OPERATION IN DUAL-ENERGY. ..................................................................................................................... 18
4.8 USER ADJUSTED TANK TEMPERATURE SET POINT .................................................................................. 19
Section 5 : OPERATION .............................................................................................................................................. 20
5.1 GENERAL SAFETY PRECAUTIONS ............................................................................................................... 20
5.2 FILLING THE WATER HEATER TANK ............................................................................................................. 21
5.3 FILLING THE DOMESTIC WATER HEATER HEAT EXCHAGER .................................................................... 21
5.4 BOILER CONTROLLER SETTING ................................................................................................................... 21
5.5 START UP PROCEDURE ................................................................................................................................. 21
5.6 THERMOSTATICALLY CONTROLLED MIXING VALVE SETTING ................................................................. 22
Section 6 : MAINTENANCE ......................................................................................................................................... 23
6.1 INTRODUCTION ............................................................................................................................................... 23
6.1 AT ALL TIMES .................................................................................................................................................. 23
6.2 EVERY 6 MONTHS ........................................................................................................................................... 23
6.3 YEARLY INSPECTION ..................................................................................................................................... 23
6.5 SPARE PARTS ................................................................................................................................................. 24
COMBOMAX ULTRA LIMITED WARRANTY............................................................................................................... 27
COMBOMAX ULTRA Electric Boiler Installation, Use and Care Manual
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(Revision june 2016)
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