THERMAFLOW LTD | THERMAFLOW® ELECTRIC COMBINATION BOILER |
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2.6.3 External Controls....................................................................................23
ELECTRICAL CONNECTIONS.......................................................................23
2.6.4 Supply cable connection [24 HR Supply] ...............................................23
2.6.5 Heating system controls .........................................................................23
2.6.6 Electrical Test.........................................................................................24
2.6.7 Supply cable connection [Interrupted off peak supply] ...........................24
2.6.8 Electrical Test.........................................................................................24
2.6.9 IMPORTANT: Electricity tariffs ...............................................................24
2.7 Commissioning .............................................................................................25
2.7.1 Filling domestic water circuit ..................................................................25
2.7.2 Filling the heating system .......................................................................25
2.7.3 Domestic hot water flow rate ..................................................................25
2.7.4 Temperature settings .............................................................................25
2.7.5 Heating system commissioning ..............................................................26
2.7.6 Completion .............................................................................................26
2.7.7 INSTRUCT THE USER................................................................................26
Part 3 - SERVICING .................................................................................................27
3.1. Fault Finding ................................................................................................27
3.1.1 Fault: No domestic hot water or central heating .....................................28
3.1.2 Fault: No central heating, but hot water at taps......................................29
3.1.3 Fault: CENTRAL HEATING BUT No hot water at taps ..........................30
3.2 MAINTENANCE ........................................................................................31
Checking the pressure in the expansion vessel ..............................................31
3.2.3 Checking the inline strainer ....................................................................31
3.2.4 Checking the hot water blending valve...................................................31
3.2.5 Checking the concentration of corrosion inhibitor ..................................32
3.2.6 Preventing pump seizure in summer ......................................................32
3.2.7Checking correct operation of electrical components..............................32
3.2.8 Low pressure switch ...............................................................................32
3.2.9 Control and high limit manual re-set thermostats ...................................32
3.2.12 Checking the heating elements ............................................................33
3.2.13 Checking circuit breakers .....................................................................33
3.2.14 Checking the contactor.........................................................................33
3.2.15 Check the operation of the AQUA STAT ..............................................33
4.1.1 SOLAR THERMAL LINKED INTO THE THERMAFLOW...........................34
4.1.2 SOLID FUEL SYSTEM LINKED INTO THERMAFLOW .............................35
4.1.3 EXTERNAL PRIMARY HEAT TRANSFER EQUIPMENT......................36
IMPORTANT PRE-INSTALLATION NOTES
Power supply and wiring
The power supply to the premises must meet the minimum requirements of the unit being
installed, with special attention given to the supply current, cable size and MCB recommendation.
The supply voltage to the appliance must never drop below 207 Volts.
Important
The electrical supply requirements:-
The 9 KW and 12 KW boilers meet the requirements of EN 61000-3.3
The 9 KW and 12 KW boilers must be installed in premises having a service supply of
≥
100A
per phase.
