12 Decommissioning
12.1 Decommissioning procedure
12.1.1 Decommissioning the domestic water storage tank
Caution
Risk of water damage!
Ensure the stored water can flow unimpeded into the drain.
The domestic water storage tank is decommissioned as follows:
1. Close the disconnector valve to stop the cold water supply.
2. Open the drain valve on the drinking water storage tank.
3. Vent the domestic water storage tank
4. Put the heat generator out of operation.
12.1.2 Draining off the heating water
Danger
Risk of scalding!
Water-carrying pipes get hot!
1. Close gas shut off device
2. Turn off the gas condensing boiler at the ON/OFF switch
3. Turn off the mains isolator
4. Close the disconnector valves for heating return (HR) and heating flow
(HV) on the top of the EC five. The EC five is isolated from the heating
network.
5. Remove the protective cap from the boiler fill and drain valve on the
return manifold of the EC five and screw the hose nozzle to the boiler
fill and drain valve
6. Connect a hose to the nozzle of the boiler's filling and drain valve.
Caution
Care must be taken to ensure that the hose is seated firmly on the
hose nozzle before the filling and drain valve is opened.
7. Place a bucket or other drip pan underneath
8. Open the BDF valve, the boiler water drains out
Caution
Risk of damage to the boiler!
Prevent the appliance from being switched back on while there is
no water in the heating system, e.g. by sticking tape over the
ON/OFF switch. Otherwise the pumps will overheat and be
destroyed.
RA-0000249
2
5
RA-0000250
5
12 Decommissioning
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7703301 - 01 - 16072018
