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The diagram below details the required
clearances around the unit:
WARNING:
Do not install this appliance under
an overhang less than 3 feet from its top or
eaves. The area under an overhang must be
open to three sides
WARNING:
Do not have the vent terminal
pointing toward any opening into a building. Do
not locate your appliance in a pit or location
where gas and water can accumulate.
WARNING:
Do not install the appliance where
water, debris or flammable vapors may get into
the flue terminal. This may cause damage to
the appliance and void the warranty.
WARNING:
Do not install the appliance vent
terminator within 4 feet in the USA of any air
intake or building opening, and with in 3 feet in
Canada of any air intake or building opening.
(Refer to Page.9)
INDOOR INSTALLATION
When installed indoors, the T-H1 appliance
shall be located in an area to maintain the
following minimum clearances around the unit:
Indoor Installation Service Clearances
Piping side (Bottom)
12”
Front (Maintenance space)
24”
Back of appliance
1”
Sides of appliance
2”
Top of appliance
12"
Combustion Air Supply
The appliance location must provide enough
air for proper combustion and ventilation of the
surrounding area. See the latest edition of
ANSI Standard Z223.1 or any applicable local
codes. In general, these requirements specify
that if the unit is installed in a confined space,
there must be a permanent air supply opening.
Air Supply from Outside Building
When combustion air is supplied from outside
the building, an opening communicating
directly with the outside should have a
minimum free area of one square inch per
15,000 BTU/H input of the total input rating of
appliance in the enclosed area.
Air Supply from Inside Building
When combustion air is supplied from inside
the building, an opening communicating with
the rest of the dwelling should have a minimum
free area of one square inch per 1000 BTU/H
input of the total input rating of appliance in the
enclosed area. These openings should never
be less than 100 sq. in.
Minimum recommended air supply opening size
for appliance:
Appliance
size
When drawing
make-up air
from outside
the building
When drawing make-up
air from inside the
building (from other
rooms within)
Max. 199,000
BTU/H
13.5 square
inches
199 square inches
