E1. Single Pipe (Sidewall) Venting Option - Thermo Pride CHB1-50N Installation And Operation Manual

All installations and services must be performed by qualified service personnel.
Figure 4: Minimum Clearances Between the Vent Terminal and Various Objects or Features
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
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.
E1. Single-Pipe (Sidewall) Venting Option
This furnace may be horizontally, i.e. sidewall, vented using an exhaust vent pipe alone without
drawing in outside combustion air. When single-pipe, sidewall venting a furnace, combustion air is
drawn from the indoor space. This type of installation is not classified as a direct vent installation.
However, the same exhaust venting guidelines apply as for a direct vent installation, except the
exhaust termination will be similar to the air intake of the "two- pipe", direct vent installation. Refer to
depictions of proper intake terminal installations in Figures 2 and 3. Referring to the left-hand (LH)
sketch in Figure 2, vent termination will consist of one (1), 90° elbow, opening downward.
NOTICE: When possible, we recommend all furnace of the model series CHB1 / CDB1 be
installed to utilize outside combustion air. The use of outside combustion air usually results in
the most energy efficient, nuisance free, and long-lived operation of the furnace.
13