EHC
Fusion E10 Combi
–
Installation and technical manual
Page 20
13.
Commissioning: Genaral
IMPORTANT: DO NOT SWITCH ON THE ELECTRICAL SUPPLIES TO THE FUSION E10
COMBI UNIT UNTIL THE CYLINDER AND PRIMARY CIRCUIT HAVE BEEN
CORRECTLY FILLED WITH WATER.
Filling the cylinder
1
Check that all pipe connections to the Fusion E10 Combi are tight.
2
Open a hot tap furthest from the Fusion E10 Combi.
3
Check the Primary System Filling Loop isolating valves are closed.
4
Open the cold water supply isolating valve and allow the Fusion E10 Combi cylinder to fill.
When water flows from the tap, allow to run for a few minutes to thoroughly flush through any
residue, dirt or swarf, then close tap.
5
Open any other hot and any cold services supplied by the balanced cold outlet to remove
any air from the system.
6
Check all connections (including immersion heater) for leaks and rectify as required..
7
The strainer housed within the Cold Water Combination Valve should be cleaned to remove
any debris that may have been flushed through the main supply pipe.
Filling the sealed system primary circuit
1
The primary system must be flushed in accordance with BS 7593 and the manufacturer’s
instructions supplied.
Failure to to do this will invalidate warranty.
2
Connect the Filling Loop and tighten connections.
3
Check all radiator valves are in the open position.
4
Open the Filling Loop isolating valves and allow primary system to fill until the pressure
gauge on the fascia of the Fusion E10 Combi reads approx. 2.0 bar.
5
Purge air from all radiators and air vent points in the primary system including the pump in
the fusion boiler
6
Check the primary system pressure. This should be between 1.0 and 1.5 bar. If lower, open
Filling Loop isolating valves until gauge reads approx. 2.0 bar. Repeat air purging operation.
This sequence may need to be repeated several times to ensure all air is purged from the
system.
7
Check primary system for leaks and rectify as necessary.
8
When the pressure gauge remains steady at between 1.0 and 1.5 bar ensure both Filling
Loop isolating valves are closed and remove Filling Loop flexible hose from the Primary
system connection point.