Installation
&
Servicing
instructions
AT
AG
A200SOV
9
6
Connecting the boiler
The boiler has the following connection pipes;
- The central heating pipes.
These can be connected to the installation by means of compression fittings / adapter
fittings;
- The gas pipe.
It is provided with a female thread into which the tail piece of the gas isolation valve
can be screwed;
- The condensation drain pipe.
It consists of a 22mm plastic pipe. The drain pipe can be connected to this by means
of an open connection. If the open connection is fitted in a different location, then the
pipe can be lengthened by means of a 32 mm PVC sleeve;
- The flue gas exhaust system and air supply system.
It consists of a concentric connection 60/100 mm.
Isolation valves are not permitted to be installed on open vent boilers.
It is advisable to spray-clean all of the boiler’s connecting pipes and/or to spray-
clean/blow-clean the installation before connecting it to the boiler.
6.1 Open vent heating system
This boiler is only suitable for installations that have been equipped with “open”
expansion tanks (Open vent).
Connect the Open vent heating system according to the current regulations.
450 mm
Min. height
1000 mm
Min.
150 mm Max.
Heating
circuit
DHW
cylinder
Boiler
22 mm (Min.) vent feed and
expansion cistern
15 mm (Min.) cold feed
Pump
22 mm (Min.)
Automatic by-pass
Open vent heating system
Recommended relationship
between pump, cold feet and vent.
Scheme open vent system
Figure 3
