Strebel S-CB+ Series, Installation Operating & Maintenance Manual

Page: 17 / 125

S-CB
+
Boiler Range Manual
17
6 CONNECTIONS WATER SIDE
FRONT VIEW
1 2 3 4 5
6.1 Boiler connections
1
– Flow CH
2
– Condensate drain
3
– Siphon cleaning point
4
– Return CH
5
– Gas
Open connection
to the sewer.
6.2 Condensate drain connection
The condensate drain is placed at the centre and at the bottom of
the boiler and has a ¾ inch 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 connec-
tion 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 siphon, before commissioning the boiler and/or after mainte-
nance, the siphon must
ALWAYS be completely filled with water.
This is a safety measure: the water in the siphon keeps the flue gases from leaking out of the
heat exchanger via the condensate drain.
The siphon must always be filled to the
edge with water, before placing back on
the unit.