EHC
Fusion E10 Combi
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Installation and technical manual
Page 15
11.
Installation: Central Heating pipework____________
Flow and return connections are located at the bottom of the left hand side of the unit. We
recommend compression joints at this point to prevent damage to the units internal seals.
The return connection will need to temporarily incorporate a filling loop as shown in the
diagram below. Reference should be made to BS 6798 for methods of filling and make up of
water.
RE
TU
RN
FL
OW
There must be no direct/permanent connection between the central heating system
and the mains water supply all filling loop connections must be removed, ( local water
bylaws must be observed)
System Design
As the Fusion E10 boiler is of low water content an open circuit must be achieved at all
times. The Fusion E10 Combi has an internal automatic bypass valve fitted which should be
set to 8 l/m when all thermostatic radatior valves are closed. Allowances should made for a
system bypass radiator. This radiator should be installed in the same room as the TLX 4101
room thermostat. Flow rates can be obtained from the control panel on the fusion boiler by
pressing the right-hand arrow key until the L/min LED illuminates
System Flushing
When the Fusion E10 Combi is being installed into an existing central heating system we
highly recommend that the system is power flushed to prevent contamination from existing
debris and magnatite. The Fusion E10 boiler has an inbuilt magnetic filter to protect internal
components and pump.