EHC Fusion E10 Combi – Installation and technical manual Page 28
16. Servicing
Servicing should only be carried out by competent installers and any spare parts used must
be purchased from The Electric Heating Company. NEVER bypass any safety devices or
operate the unit without them being fully operational.
Draining
Isolate from the electrical supply to prevent the immersion heaters burning out. Isolate the
unit from the cold mains. Attach a hose to the draining tap ensuring it reaches to a level
below the unit (This will ensure an efficient syphon is set up and the maximum amount of
water is drained from the unit). Open the hot tap closest to the unit and open the draining
tap.
WARNING: WATER DRAINED OFF MAY BE VERY HOT!
Annual maintenance
The Fusion E 10 requires an annual service on the cylinder in order to ensure safe working
and optimum performance. It is essential that the following checks are performed by a
competent installer on an annual basis. The internal fusion electric boiler does not require
any servicing but it is good practace to check electrical connections are all good to prevent
any damage to the electrical terminals due to a loose connection. The magnetic filter within
the unit should also be cleaned at this stage.
Twist the cap of the expansion relief valve on the inlet control set and allow water to flow for
5 seconds. Release and make sure it resets correctly. Repeat with the pressure /
temperature relief valve. In both cases check that the discharge pipework is
carrying the water away adequately. If not check for blockages etc. and clear.
WARNING: THE WATER DISCHARGED MAY BE VERY HOT!
Check that any immersion heaters fitted are working correctly and that they are controlling
the water at a temperature between 55°C and 65°C.
Check the pressure in the expansion vessel is charged to 3.0 bar. Turn off the water supply
to the unit and open a hot tap first. The air valve on expansion vessel is a Schrader (car tyre)
type. Air or CO
2
may be used to charge the expansion vessel.
Unscrew the head on the inlet control set and clean the mesh filter within.
The benchmark log book supplied with this unit should be updated at each service.
YOUR GUARANTEE MAY BE VOID WITHOUT PROOF OF ANNUAL SERVICING.
Spare parts
We carry the full range of spares listed below in stock. If you order before noon we will
dispatch the same day for delivery the next to most locations. Tel: 01698 820533.
TS201 Inlet control set (pressure reducing valve, strainer and expansion relief valve)
TS202 Temperature & pressure relief valve
TS3 Tundish
TS4 Expansion relief valve (cartridge only)
TS105 2 port valve
TS207 Dual thermostat
TS9 Immersion heater (same on all models)
TS212 12 litre Expansion Vessel
TS27 Single control stat
TS28 Single high limit stat
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