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WARNING
- You must maintain at least
the minimum separation of
exhaust vent termination from
unit's intake air as illustrated
in figures 9, 10 and 13 and
15. Failure to do so can result
in a dangerous situation
where exhaust gases are
pulled in with combustion air.
Damage to the unit can result
from a failure to maintain
these separations. Improper
installation will void the
warranty.
- You must not cover non-
metallic vent pipe and fittings
with thermal insulation.
- In areas of high snowfall,
users must be advised to
check side wall vent and
air intake terminations on
a regular basis to ensure
blockage does not occur.
WARNING
The vent for this appliance
must not terminate:
1. Over public walkways in
the US. In Canada 7' above
public walkways.
2. Near soffit vents or crawl
space vents or other areas
where condensate or vapor
could create a nuisance or
hazard or cause property
damage.
3. Wherever condensate
vapor could cause damage
or could be detrimental to the
operation of regulators, relief
valves, or to other equipment. .
1-14
TANKLESS WATER HEATER 199
1.4.6 Sidewall Vent Termination
Direct Vent - Two Pipe
Sidewall direct vent applications must be vented as follows:
•
Both the inlet and exhaust terminations must be
(side) of the building.
•
The exhaust outlet is to be placed so as to reach 12" minimum above the
down-turned intake - to avoid intake re-ingestion of exhaust gases.
•
The elevation of both pipes can be raised in "periscope style" after passing
through the wall, then configured as in Figure 13, to gain required clearance.
•
Use a 45° elbow on the exhaust termination to launch the plume up and off
the sidewall, for protection of wall.
•
Optional bird screen may be placed in a termination fitting. Leave unglued,
and hold in place with a short nipple to allow easy access for cleaning.
SNOW + 12"
[305mm]
MIN.
Figure 13: Sidewall vent termination - piping configuration
Figure 14
Figure 14: Prohibited installation
must be located on the same plane
SNOW + 12"
[305mm]
MIN.
INSTALLATION AND OPERATION INSTRUCTIONS
SNOW + 12"
[305mm]
MIN.
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