Navien NCB-190/060H, Руководство по установке и эксплуатации

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94 Installing a Common Vent System
To install a condensate drain to the cascade system:
1. Form a loop with a drain hose and fix it with a
tie.
Note
●
While shaping the hose, do not
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. The water inside
the hose should be higher than 7.9 in (200 mm),
and water should be inside the hose before
operating the boiler.
3. Install the hose to the cascade system and direct
the end of the hose to a drain.
7.9 in
(200 mm)
WARNING
After installing the condensate drain hose,
check the loop again to ensure that the prime
water is not spilled. The loop (siphon) must be
primed with water before running the system
to prevent toxic exhaust gas from leaking into
the installation site.