THERMAL INNOVATIONS (UK) LTD | THERMAFLOW® ELECTRIC COMBINATION BOILER |
Tel: 0870 850 5207
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2.7.5 Heating system commissioning ..............................................................22
Fault: No domestic hot water or central heating ..............................................25
Fault: No central heating, but hot water at taps...............................................26
Fault: CENTRAL HEATING BUT No hot water at taps ...................................27
Checking the pressure in the expansion vessel ..............................................28
Checking the hot water blending valve............................................................28
Checking the concentration of corrosion inhibitor............................................29
Preventing pump seizure in summer ...............................................................29
Checking correct operation of electrical components......................................29
Check the operation of the AQUA STAT .........................................................30
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.
The 12 KW boiler must be installed in premises having a system impedance of not more than
0.1939 + J
0.1939
Ω