Thermo Pride CLHS1-050P36N Installation And Operation Manual page 19

All installations and services must be performed by qualified service personnel.
4. Vent Terminal Location Guidelines
: Bushes, shrubs, or any vegetation that may restrict the flow of flue products must be kept
away from vent and air intake terminations. Terminations must also be kept clear of any leaves, weeds,
combustible materials, snow, and ice build-up. Avoid locating the vent terminal over areas where
dripping of condensate, or small pools of acidic condensate, could create a problem.
In addition to following any local code requirements, when possible, utilize the guidelines below in locating
the vent terminal to help insure trouble-free operation of a sidewall vented furnace:
•
Avoid locating the vent terminal on a wall facing prevailing winds and wide-open areas. When
impractical, choose a location that protects the vent from strong winds, such as behind a fence or
hedge.
•
In geographical areas with considerable snowfall, it is advisable to locate the vent terminal much higher
than the minimum 12-inches above ground to prevent blockage by snow accumulation or drifting.
•
The vent and combustion air terminations shall be checked periodically, at least at the start of each
heating season, for restriction or blockage from foreign material in the exhaust vent or in the air intake
piping. Clean the air intake and vent terminations when necessary.
NOTICE: When using this termination method the furnace is susceptible to a nuisance shut off
due to high winds blowing directly into the vent and changing the internal pressure enough to activate a
safety pressure switch. It is best practice to locate the vent so that prevailing winds do not blow directly into
the open vent termination.
5. Alternate Vent Termination for Wind Gusts in Excess of 25 MPH
If the exhaust vent is to be installed in a location which may be exposed to winds blowing directly at the
vent termination, this alternate configuration should be used. All previous venting instructions still apply,
with the exception that the elbow on the exhaust vent termination is replaced with a straight tee. A sanitary
tee may be used if a straight tee is unavailable, but optimal performance is achieved with a straight tee. The
air intake remains unchanged.
Figure 4: Optional Termination
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