Thermaflow TH6-210U M3, Instructions For Use Installation And Servicing

Page: 5 / 32

THERMAflow Ltd | THERMAFLOW® ELECTRIC COMBINATION BOILER | Tel: 0870 850 5207
5
2.6.6 Electrical Test ....................................................................................... 21
2.6.7 Supply cable connection [Interrupted off peak supply] .......................... 21
2.6.8 Electrical Test ....................................................................................... 21
2.6.9 IMPORTANT: Electricity tariffs .............................................................. 21
2.7 Commissioning ........................................................................................... 22
2.7.1 Filling domestic water circuit ................................................................. 22
2.7.2 Filling the heating system ..................................................................... 22
2.7.3 Domestic hot water flow rate ................................................................. 22
2.7.4 Temperature settings ............................................................................ 22
2.7.5 Heating system commissioning ............................................................. 23
2.7.6 Completion ........................................................................................... 23
2.7.7 INSTRUCT THE USER .............................................................................. 23
Part 3 - SERVICING ............................................................................................... 24
3.1. Fault Finding .............................................................................................. 24
3.1.1 Fault: No domestic hot water or central heating .................................... 25
3.1.2 Fault: No central heating, but hot water at taps ..................................... 26
3.1.3 Fault: CENTRAL HEATING BUT No hot water at taps .......................... 27
3.2 MAINTENANCE ...................................................................................... 30
Checking the pressure in the expansion vessel ............................................. 30
3.2.3 Checking the inline strainer ................................................................... 30
3.2.4 Checking the hot water blending valve.................................................. 30
3.2.5 Checking the concentration of corrosion inhibitor .................................. 31
3.2.6 Preventing pump seizure in summer ..................................................... 31
3.2.7Checking correct operation of electrical components ............................. 31
3.2.8 Low pressure switch ............................................................................. 31
3.2.9 Control and high limit manual re-set thermostats .................................. 31
3.2.12 Checking the heating elements ........................................................... 32
3.2.13 Checking circuit breakers .................................................................... 32
3.2.14 Checking the contactor ....................................................................... 32
3.2.15 Check the operation of the AQUA STAT ............................................. 32
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 6 KW boiler meets the requirements of EN 61000-3-11
The equipment is intended for use only in premises having a service current
capacity of ≥ 100A
per phase , supplied from a distribution network having a nominal voltage of 400/230 V, and the
user should consult the supply authority if necessary to determine if the service current capacity
at the interface point is sufficient for the equipment.