Water Circulation System; Pipe Connections - Buderus 800-24 Installation And Servicing Instructions

1 Installation
1.6

Water circulation system

The central heating system should be in accordance with
BS.6798 and, in addition, for smallbore and microbore
systems, BS.5449.
1.7

Pipe connections

1.7.1 Heating circuit connection
On type 800 – 60 an automatic air-release valve must be fitted
in the return line.
A servicing valve has to be installed in the flow and return lines
to allow the gas boiler to be serviced and repaired.
Make sure that the expansion vessel, pressure relief valve and
draining valve are installed between the gas service valve and
the boiler.
In order to ensure an optimum and efficient operation of the
heating system, care must be taken that the heating boiler
always has the required minimum amount of circulation water.
In single-circuit systems the required minimum amount of
circulation water can be provided e.g. by means of an bypass
valve.
A bypass valve is not needed when a hydraulic shunt is
installed.
Thoroughly flush pipes and radiators !
For sizes of pipe connections please refer to the wall
mounting template.
Fit expansion vessel in compliance with the separate
installation instructions
or
install the expansion vessel in the boiler return line.
Fit the service valve in the flow and return lines (see
subsection 1.1 on pages 6 and 7).
Connect pipes free of tension.
1.7.2 Gas Supply
The gas installation must be installed in accordance with
BS6891.
CAUTION!
Pipework from the meter to the boiler MUST be
of adequate size.
The complete installation MUST be tested for gas tightness
and purged as described in IGE/UP/1b.
Subject to modifications resulting from technical improvements !
12 Installation and servicing instructions condensing gas boiler 800 - 24/29/43/60 and 800 - 24T25/29T25 H/V • edition 02/2006
fig. 7 Gas connection
Buderus • http://buderus-domestic.co.uk