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9.7 Installing a Condensate Drain
Refer to the following examples to install a condensate
drain hose (field supplied) to the common vent system.
The condensate drain hose prevents condensate or
rain from entering the exhaust system and gathering
above the backflow damper.
Intake
End
Cap
Siphon loop
End
Cap
Siphon loop
Drain hose
Condensate drains can also be added
Note
to the end caps for additional drainage.
92
Installing a Common Vent System
Exhaust
Drain hose
Drain
Exhaust
Intake
Drain
To install a condensate drain to the common vent
system:
1. Form a loop with a drain hose and fix it with a
tie.
While shaping the hose, do not
Note
●
bend the hose excessively. The hose
will be deformed and the flow will be
restricted if the hose is bent in sharp
angles.
Do not fix the hose too tight when
●
tying the hose to form the loop. The
hose will be deformed and the flow
will be restricted if the tie is too tight.
2. Prime the loop using tap water.
3. Install the hose to the common vent system and
direct the end of the hose to a drain.
7.9 in
(200 mm)
WARNING
Carbon Monoxide Hazard
Check the loop again to ensure the water is still
in the loop.
The loop (siphon) must be primed with water
before running the system to prevent toxic
exhaust gas from leaking and resulting in
serious injury or death.
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