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

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83 Installing a Common Vent System
Adequate Installation Clearances
CAUTION
Do not install the boiler on carpeting.
Install the boiler in an area that allows for service
and maintenance access to utility connections,
piping, filters, and traps. Based on the installation
location, ensure that the following clearances are
maintained:
Top
Back
Side
Bottom
Front
Side
Clearance from: Indoor Installation
Top 9 in (229 mm) minimum
Back 0.5 in (13 mm) minimum
Front 4 in (100 mm) minimum
Sides 3 in (76 mm) minimum
Bottom 12 in (300 mm) minimum
CAUTION
It is necessary to leave clearance for service
access.
●
To avoid moisture and frost build-up and to
maintain clearances to openings on adjacent
homes, 45° elbows, 90° elbows, or tees may be
attached to the end of the termination vent pipe
to direct the exhaust plumes away from buildings,
as long as the total allowable vent lengths,
maximum number of elbows, and distances to air
intake restrictions are observed.
●
If the boiler units will be installed in areas where
snow is known to accumulate, protect the vent
termination from blockage. Provide a minimum of
1 foot (30 cm) clearance from the bottom of the
exhaust of the expected snow accumulation level.
Snow removal may be necessary to maintain
clearance.
●
Ensure that the vent termination is at least 12 in
(305 mm) above ground, 12 in (305 mm) above
the highest anticipated snow level, or as required
by local codes, whichever is greater.
●
Support the vent pipe with hangers at regular
intervals or as required by local codes.
●
The vent for this appliance shall not terminate
over public walkways; or near soffit vents or crawl
space vents or where condensate or vapor could
create a nuisance or hazard or cause property
damage; or where condensate or vapor could
cause damage or could be detrimental to the
operation of regulators, relief valves, or other
equipment.