Thermo Products CMC1-50DV3N, CMC1-50D36N, CMC1-75D36N, CMA3-50D36N, CMA3-75D36N, CMC1-75DV3N

Models: CMC1-75DV3N CMA3-75D36N CMA3-50D36N CMC1-75D36N CMC1-50D36N CMC1-50DV3N

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All installations and services must be performed by qualified service personnel.

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.

Manual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual background: This furnace is not to be used for temporary heating of buildings or structures under construction.

Manual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual background: These high efficiency condensing furnaces are not certified for and shall not be vented into a standard or any type of chimney.

Manual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual background: 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.

Manual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual background: 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.

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Thermo Products CMC1-50DV3N, CMC1-50D36N, CMC1-75D36N, CMA3-50D36N, CMA3-75D36N, CMC1-75DV3N service manual

FAQ

What type of gas should be used with this furnace?

Use only the type of gas approved for this furnace as specified on the furnace rating plate.

Can this furnace be vented into a standard chimney?

No, these high efficiency condensing furnaces are not certified for and shall not be vented into a standard or any type of chimney.

How should supply air ducts be installed?

Supply air ducts should be completely sealed to the furnace casing as stated in Section IV of the manual.