Installation
1
12
Installation and maintenance instructions for wall-mounted condensing gas boiler 600 - 11S/19S/24S/24C • 02/2006
Buderus • http://www.buderus-domestic.co.uk
Subject to modifications resulting from technical improvements!
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
Pipework from the boiler is routed downwards as standard, but
may be routed upwards behind the boiler using the stand-off
frame (supplied in a separate kit).
z
Connect pipes as shown in fig. 6. Ensure that all pipework
is routed so as to minimise any strain on the boiler fittings.
1.7.1
Gas Supply
The gas installation must be installed in accordance with
BS6891
.
The complete installation MUST be tested for gas tightness
and purged as described in
IGE/UP/1b
.
1.7.2
Gas connection
z
Connect to gas supply according to relevant standards,
installing a screw-threaded gas shutoff valve (accessory)
to the gas supply system.
1.7.3
Hot-water temperature for 600 - 24C
z
Fit a non-shutting diaphragm safety valve (max. 8 bar)
upstream of the cold-water inlet. This is not required if the
building is equipped with a pressure regulator configured to
guarantee that the maximum supply pressure of 10 bar
cannot be exceeded.
z
Connect pipes free of tension (fig. 6).
Fig. 6
Pipe connections
Key to fig. 6:
1:
CH flow
2:
DHW warm out (combi only)
3:
Gas
4:
DHW cold in (combi only)
5:
CH return
6:
Condensate trap
1
2
3
4
5
6
CAUTION!
Pipework from the meter to the boiler MUST be
of adequate size.
CAUTION
DO NOT use galvanised pipes or fittings.
The hot water heat exchanger is made of
copper and is liable to suffer the effects of
electrolytic corrosion.
NOTE
When using plastic pipes, observe the
supplier’s instructions
especially those
referring to recommended jointing techniques
and the notes relating to the heating system
water on page 5.