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
bottom 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
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)
instructions.
5.2.2
Connecting the expansion vessel
1. Ensure that there is an expansion vessel with the correct volume and
pre-charge.
2. Fit the expansion vessel on the central heating return pipe
.
5.2.3
Connecting the condensate drain pipe
The siphon is supplied separately with the boiler as standard (including a
flexible plastic drain hose and a transparent extension hose for the
automatic air vent). Fit these parts under the boiler.
1. Remove the dust cap from the siphon connection
at the bottom of
the boiler.
2. Pull the retainer clip of the siphon sidewards.
3. Push the siphon firmly into the designated opening.
4. Push the retainer clip of the siphon forwards.
5. Check whether the siphon is firmly fitted in the boiler.
6. Fit a plastic drain pipe of Ø 32 mm or larger, terminating in the drain.
7. Attach the siphon hose supplied to the output of the siphon and insert
the other end into the plastic drain pipe.
8. Push the transparent hose supplied into the connecting grommet of
the automatic air vent and insert the other end into the plastic drain
pipe.
Fig.16
Connecting the CH return
AD-0000109-01
Fig.17
Connecting the condensate drain
AD-0000110-04
6
8
7
3
7
5
8
1
1
3
2
4
2
5 Installation
22
7701838 - v.09 - 10122021
