18
7 CONNECTIONS
7.1 Boiler connections
1 – Flow (Hot water out)
2 – Return (Cold water in)
3 – Gas
4 – Condensate trap cleaning point
5 – Condensate drain
6 – Automatic air vent.
Strain on the gas valve and fittings may result in vibration, premature component failure and leakage and
may result in a fire, explosion, property damage or serious injury. Do not use an open flame to test for gas
leaks. Failure to follow these instructions may result in fire.
7.2 Condensate drain connection
The condensate drain is placed at the centre and at the bottom of
the boiler and has a 19 mm hose discharge. Connect this flexible
hose to the sewer system.
Use only plastic parts with the condensate drain. Metal lines are
not allowed.
Blockage of this drain might damage the boiler. The drain
connection is correct when the condensate can be seen flowing
away, e.g. using a funnel. Any damage that might occur, when the
drain is not installed correctly, is not covered by the warranty of the
boiler.
There should be an open connection of the condensate hose into
the sewage system. A possible vacuum in the sewage system
must never give the opportunity to suck on the boiler’s condensate
drain hose.
When mounting the bottom part of the condensate trap, before commissioning the boiler and/or after
maintenance, the condensate trap must
ALWAYS
be completely filled with water.
This is a safety measure: the water in the condensate trap keeps the flue gases from leaking
out of the heat exchanger via the condensate drain.
1 2 3 4 5 6
Open connection
to the sewer.
Summary of Contents for S-CBX 105
Page 2: ......
Page 40: ...40 9 10 Flue Terminal Positioning ...
Page 42: ...42 9 11 1 FIGURE 12 LINE G ...
Page 55: ...55 11 5 Ladder Logic Diagram ...
Page 56: ...56 11 6 Electrical schematics ...
Page 57: ...57 ...
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