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Furnace
Thermo Products
CMC1-50D36N, CMC1-50DV3N, 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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Troubleshooting
Specs
Install
Gas Pressure Chart For Cma*/Cmc* Model Furnaces
Appendix - A Replacement Parts
Dimension
Maintenance
L.Electrical Wiring
The vent and air intake elbows must be kept away from bushes, shrubs or any vegetation that may restrict the flow of flue products. It must also be kept clear of any leaves, weeds or other combustible materials. Keep the vent hood clear of snow. Avoid locating the terminals in areas where standing water or condensate drippage may be a problem
Figure K. CONDENSATE DRAIN LINE AND TRAP ASSEMBLY
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All installations and services must be performed by qualified service personnel.
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Contents
MODELS CMA3-50D36N, CMA3-75D36N
FOR YOUR SAFETY
CMC1-50D36N, CMC1-75D36N CMC1-50DV3N, CMC1-75DV3N
WHAT TO DO IF YOU SMELL GAS
SECTION
TABLE OF CONTENTS
I. SAFETY INFORMATION
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The vent and air intake elbows must be kept away from bushes, shrubs or any vegetation that may restrict the flow of flue products. It must also be kept clear of any leaves, weeds or other combustible materials. Keep the vent hood clear of snow. Avoid locating the terminals in areas where standing water or condensate drippage may be a problem
1.A windows be opened
DIMENSIONS
II. FURNACE SPECIFICATIONS
MODEL
CMA3-50D36
MODEL
DIMENSIONS
CMC1-50D36
CMC1-75D36
MODEL
DIMENSIONS
CMC1-50DV3
CMC1-75DV3
INSTALLATION PARTS PACKAGES
Page
NON-COMBUSTIBLEMATERIAL
COMBUSTIBLE MATERIAL.” COMBUSTIBLE MATERIAL
MODELS CMA3/CMC1
Combustible Floor Base Model 70-BASE
IV. GENERAL INSTALLATION A.FURNACE LOCATION
For CMA3 models only Figure 1A
CE113S
Coil Cabinet Model CE113S / CE213T
Figure 1B
Cottage Base Model 01COT-BASE
Figure Figure
B. BASE INSTALLATION - CMA3 models only
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Figure D.CLOSET INSTALLATION
C.ALCOVE INSTALLATION
CMC1 SERIES
CMA3 SERIES
E. FUEL PIPING
F.GENERAL VENTING REQUIREMENTS
MAXIMUM VENT LENGTH
Page
Figure 6A
1. Vent And Combustion Air Pipes
H. Direct Venting Through a Sidewall
2. Exhaust Vent Termination Elbow
Sidewall Venting
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4. Vent Terminal Location Guidelines
Terminations
Figure Figure
The furnace may be vented vertically through the roof. The outlet/inlet of the vent and air intake terminations shall be a minimum of 12 inches above highest anticipated snow level. The vent outlet must be installed a minimum of 12 in. above the air intake inlet. The combustion air intake shall be installed upwind of the vent outlet when exposed to prevailing winds.The exhaust vent and combustion air intake can be a minimum of 3 in. and a max. of 24 in. apart see Figures 11 & 12. When installing dual 2” PVC pipes and the 2” flashing plates AOPS7484 on pitched roof, slope adapter may be used to simplify installation
Figure K. CONDENSATE DRAIN LINE AND TRAP ASSEMBLY
2.Connection Of Power Supply Wires
L.ELECTRICAL WIRING
3. Connection Of Room Thermostat Wires
1. Electrical Branch Supply Circuit
Maximum Recommended Thermostat Wire Length Feet
Electrical Wire Diameter AWG
4. BLOWER MOTOR SPEED WIRING Figure
Speed Tap \
CMA3-50D36
Static
Pressure
CMA3-75D36
Speed Tap \
CMC1-50D36
Static
Pressure
CMC1-75D36
Speed Tap \
CMC1-50DV3
Static
Pressure
CMC1-75DV3
5. FIELD WIRING AND REPLACING WIRING
V.STARTING THE UNIT A. SEQUENCE OF OPERATIONS
MAIN BURNER OPERATION CALL FOR HEAT SATISFIED
OPERATING INSTRUCTIONS
B.INITIAL START UP
C.ADJUSTMENT OF BTU INPUT RATE
D.BURNER ADJUSTMENT
GAS PRESSURE CHART FOR CMA*/CMC* MODEL FURNACES
E.SETTING TEMPERATURE RISE
F.FURNACE CHECKOUT PROCEDURE
VII. DEALER MAINTENANCE
VI. INSTALLERS INSTRUCTIONS TO USER
4. INDUCER BLOWER ASSEMBLY
2.CONDENSATE LINE/TRAP ASSEMBLY
A.ELECTRICAL
B.GENERAL INSPECTION
5. GASKETS/SEALING MATERIALS
1.CLEANING THE COIL AIR SIDE
C.HEAT EXCHANGER
D.HOUSE AIR BLOWER
FILTER REPLACEMENT
FILTER MAINTENANCE PROCEDURE
VIII. TROUBLESHOOTING
DIAGNOSTIC FEATURES
The LED will also flash once at power-up
TROUBLESHOOTING GUIDE
AT THE INTEGRATED CONTROL?
Yes AFTER GAS VALVE OPENS, DO THE BURNERS IGNITE?
IS LED LIGHT
IF LED LIGHT FLASHES
APPENDIX - A REPLACEMENT PARTS
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APPENDIX - B WIRING DIAGRAMS