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WARNING: Do not install this water heater 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 heater in a pit or location where
gas and water can accumulate.
WARNING: Do not install the heater where
water, debris or flammable vapors may get into
the flue terminal. This may cause damage to
the heater and void the warranty.
WARNING: Do not install the water heater
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-M1 water heater
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 heater 1”
Top of heater 12”
Side of heater 2"
The diagram below details the required
clearances around the unit:
Combustion Air Supply
The water heater 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 BTUH input of the total input rating of
water heater 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 BTUH
input of the total input rating of water heater in
the enclosed area. These openings should
never be less than 100 sq. in.
Minimum recommended air supply opening size
for water heater:
Water heater
size
When drawing
make-up air
from outside
the building
When drawing make-up
air from inside the
building (from other
rooms within)
Max. 235.000
BTU
15.7 Sq. IN 235 Sq. IN
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