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S
A
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ANUAL
2.4
Connecting the unit to the central heating system
Manual version 1.0- North America (13-09-2016)
7. Fit a lock plate 3 to each suspension bracket.
Warning:
w
The unit may fall down if you do not secure
the suspension.
8. Check whether the unit is suspended firmly:
Only for water-heated models (type H3)
2.4.1 Special points regarding the water connection
Caution:
c
The central heating system's supply and return pipes
must be attached to the correct corresponding
connectors 1. On the unit, the directions are
indicated with arrows.
SYMBOL
FEED PIPE
arrow points towards the
connection
Caution:
c
The unit has an integrated water-side control. The
central heating connection must NOT be fitted with
a control valve.
Caution:
c
Biddle recommends the inclusion of a valve in both
pipes.
•
The maximum permissible operating pressure of the hot
water circuit is specified on the type plate. It is based on a
water temperature of 110 ºC (230°F).
I
NSTALLATION
SYMBOL
RETURN PIPE
arrow points away from the
connection
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