Commissioning
39
MAXXflo EVO
5.0 COMMISSIONING GENERAL
After installation of pipe work and fittings the water systems can then be filled and evacuated of all
air before commencing commissioning. This is best done with the door and outer cover removed
(see 4.2 for details)
5.1 FILLING AND REMOVAL OF AIR
5.1.1 DHw TANK AND SySTEM
In order to ensure safe removal of air from the hot water system, please perform the following:
1.
Check that the tank drain shut off valve is closed.
2.
If the heater is connected to a hot water recirculation system, open the isolation valve immediately
before the connection point to the tank.
3.
Turn on all hot water draw off taps.
4.
Turn on the cold water supply and fill the DHW tank.
5.
Close each hot water draw off tap when water is discharged.
6.
After initial filling, open each hot water draw off tap in succession and check that all the air is
vented from the system.
7.
Check for leaks inside and outside of the heater.
8.
Turn on power to heater and operate the Q1 circulation pump by disconnecting the wiring from the
front flow sensor (B2) of each heat exchanger. This will automatically operate the pump.
9.
Continue to operate the pump(s) until the sound of air in the system has diminished.
10.
Replace the flow heat exchanger wiring and press the reset for 1s when bleeding is complete.
If the pump does not appear to be rotating, place a cross head screw driver into the hole at the
centre of the pump head. Push screwdriver inwards and turn to free the pump.
CAuTION
It is
ESSENTIAL
that all air is removed from the heater before proceeding with commissioning the
heat engines , otherwise permanent damage may occur to the heat exchangers and this damage is
not covered by warrantee.
B2 Sensor
Tank drain shutoff valve
Free pump here
Содержание MAXXflo EVO CWH 90/302
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