Important
Due to the presence of an aluminium heat exchanger, suitable
chemicals and the correct use of these chemicals should be dis
cussed with specialist water treatment companies.
6.3.2
Connecting the heating circuit
1. Remove the dust cap from the CH flow connection
at the bot
tom of the boiler.
2. Fit the outlet pipe for CH water to the CH flow connection.
3. Remove the dust cap from the CH return connection
at the bot
tom of the boiler.
4. Fit the inlet pipe for CH water to the CH return connection.
5. For filling and tapping the boiler, install a filling and drain cock in the
CH return pipe.
6. Install the system pump in the CH return pipe.
See
For the electrical connection of the system pump: Connecting the
system pump, page 35
Important
Fit a service shut-off valve in the CH flow pipe and the CH return
pipe to facilitate servicing work.
Caution
When fitting service shut-off valves, position the filling and drain
valve, the expansion vessel and the safety valve between the
shut-off valve and the boiler.
If using plastic pipes, follow the manufacturer's (connection) in
structions.
6.3.3
Connecting the expansion vessel
1. Ensure that there is an expansion vessel with the correct volume
and inlet pressure.
2. Fit the expansion vessel on the central heating return pipe
.
Fig.11
Connecting the CH flow
AD-0000108-01
Fig.12
Connecting the CH return
AD-0000109-01
6 Installation
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