All installations and services must be performed by qualified service personnel.
22
Install these optional kits according to the instructions provided with each kit. In horizontal or
side wall installations. The location and clearance requirements are identical to those of the
standard vent terminations described in this manual.
NOTICE:
When using these alternate termination kits the furnace is more 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.
G. CONNECTING FURNACE TO ROOF VENT / INTAKE TERMINATIONS
If it is not desirable, or feasible, to vent the furnace through a sidewall, it may be vertically vented
through the roof. Installation shall conform to the following guidelines, which are illustrated in Figure
6, below.
1.
The outlet of the exhaust vent and the inlet of the combustion air intake, i.e. the terminations,
shall be a minimum of 12-inches above highest anticipated snow level.
2.
The exhaust vent outlet must be installed a minimum of 12-inches above the air intake inlet.
3.
Where exposed to prevailing winds, the combustion air intake shall be installed upwind of the vent
outlet.
4.
The exhaust vent and combustion air intake shall be a minimum of 3-inches and a maximum of 24
inches apart.
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