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6
Commissioning
6.1 FILLING THE MEGALIFE WITH WATER
Ensure that all fittings and immersion heater(s) are correctly fitted and tightened.
i) Open the highest hot tap in the system.
ii) Open the mains cold water supply to the cold water feed cistern.
iii) Open the service valve or stop valve fitted in the cold feed pipe to the unit. Allow the unit to fill.
When water issues from the hot tap allow to run for a few minutes to flush through any dirt or
swarf, then close tap.
iv) Allow cold water feed cistern to fill to the water line. Adjust the float valve if necessary.
v) Open successive hot taps to purge any air from the system.
vi) Check all connections for leaks and rectify as necessary.
6.2 DIRECT UNITS
DO NOT switch on the electrical supply until the MegaLife unit is filled with water.
When the system is full switch on the electrical supply to the immersion heater(s) and allow the unit
to heat up. Check that the thermostat operates correctly. A storage temperature of approx. 60
recommended (between graduations 4 and 5 on the thermostat). If necessary the temperature can be
adjusted by inserting a flat bladed screwdriver in the adjustment knob on top of the immersion heater
thermostat and rotating (see Diagram 3). The adjustment range 1 to 5 represents a temperature range
of between 10
6.3 INDIRECT UNITS
Fill the indirect (primary) circuit following the boiler manufacturer's commissioning instructions. To
ensure the primary heating coil in the Megaflo is filled any motorised valve fitted to control the primary
flow to the MegaLife primary heating coil should be manually opened by moving the lever on the
motor housing to the MAN OPEN setting. When the primary circuit is full return the lever to the
AUTO position. Vent any trapped air by opening the air bleed.
DO NOT switch on the boiler until the MegaLife unit is filled with water.
When the system is full switch on the boiler, ensure the programmer is set to Domestic Hot Water.
Allow the MegaLife unit to heat up and check that the indirect thermostat and any motorised valve
connected operate correctly. A storage temperature of approx. 60
the temperature can be adjusted by rotating the adjustment knob (located on the front of the thermostat
mounting bracket see Diagram 4).
6.5 BENCHMARK
On completion of the installation and commissioning procedures detailed in this manual the Bench-
mark
competent installer or commissioning engineer in the relevant sections.
The various system features, location of system controls, user instructions and what to do in the
event of a system failure should be explained to the customer. The Commissioning Certificate should
be left with the customer along with these instructions.
14
14
and 70
C.
o
o
COMMISSIONING CERTIFICATE
TM
"Vented Cylinder Commissioning Certificate" should be completed and signed off by the
TM
C is recommended . If necessary
o
C is
o
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