21
SPACE HEATING/COOLING AND DHW
9.3.2 To ll and drain the domestic hot water tank
Open every hot water tap in turn to purge air from the
system pipe work.
Open the cold water supply valve.
Close all water taps after all air is purged.
Check for water leaks.
The water in the tank can be very hot.
Close the cold water supply.
1) Remove the upper front panel and the lower front panel.
2) Hanging the master controller.
3) Remove the stop from the tank.
4) Use a drain hose and a pump to drain the tank via the
drainage outlet.
5) Open all the hot water tapping points to allow air to enter
the system.
During the use of the water tank, there may be dirty sediments
accumulated at the bottom of the water tank. In order to avoid
necessary to carry out regular maintenance of the water tank.
Step 1 Unscrew
the 2 screws
2 Push the
front panel upward.
3 Push the front panel forward,
disengage the snap, and
lower front panel can be
removed.
drainage outlet
electronic anode
(Optional Acessory)
DHW temperature sensor
DHW electric heater
(G3/4")
Stop (G3/4") for
Some water may be spilled when removing the stop for
drainage outlet from the DHW.
(1)
(2) To drain the domestic hot water tank
Remove the upper front panel, referring to 7.3.1, then
remove the lower front panel as follows.
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