Thermo Pride CMA4-50D36N Installation And Service Manual page 9

The following safety information should be read, understood, and followed by the
installer.
1. Use only with type of gas approved for this furnace. Refer to furnace rating plate.
2. Do not install this furnace where it could be exposed to drafts or other wind or
moisture conditions. Refer to Section IV of this manual.
3. Provide adequate ventilation air to the furnace space. Refer to Section IV, C and D,
of this manual.
4. Connect this furnace to an approved vent system only. Combustion products must
be carried outdoors. Refer to Section IV, F thru J, of this manual.
5. Never test for gas leaks with an open flame. Leak test methods must comply with
State, Local and National codes including the National Fuel Gas Code NFPA 54/ANSI-
Z233.1 (Latest Edition).
6. Always install furnace with a duct system that has an external static pressure within
the allowable range referenced in specifications.
7. Make sure supply air ducts are completely sealed to the furnace casing. Refer to
Section IV.
The following pages contain various warnings and cautions found throughout the
Thermo Pride Gas Fired High Efficiency Furnace Manual. Please read and comply
with the statements below.
: This furnace is not to be used for temporary heating of buildings or
structures under construction.
These high efficiency condensing furnaces are not certified for and
:
shall not be vented into a standard or any type of chimney.
Negative pressure inside the closet with closet door closed and the
:
furnace blower operating on high speed shall be no more negative than minus
0.05 inch water column.
: Do not obstruct any return air openings, including the return grille on
the furnace. To do so may cause the furnace to activate the high limit and shut
down.
4