Manuals / Thermo Products / Household Appliance / Furnace

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

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.

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

Contents

MODELS CMA3-50D36N, CMA3-75D36N FOR YOUR SAFETYCMC1-50D36N, CMC1-75D36N CMC1-50DV3N, CMC1-75DV3N WHAT TO DO IF YOU SMELL GASSECTION TABLE OF CONTENTSI. SAFETY INFORMATION Page Page Page 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 SPECIFICATIONSMODEL CMA3-50D36MODEL DIMENSIONSCMC1-50D36 CMC1-75D36MODEL DIMENSIONSCMC1-50DV3 CMC1-75DV3INSTALLATION PARTS PACKAGES Page MODELS CMA3/CMC1 COMBUSTIBLE MATERIAL.” COMBUSTIBLE MATERIALNON-COMBUSTIBLEMATERIAL For CMA3 models only Figure 1A IV. GENERAL INSTALLATION A.FURNACE LOCATIONCombustible Floor Base Model 70-BASE CE113S Coil Cabinet Model CE113S / CE213TFigure 1B Cottage Base Model 01COT-BASEFigure Figure B. BASE INSTALLATION - CMA3 models onlyPage Figure D.CLOSET INSTALLATION C.ALCOVE INSTALLATIONCMC1 SERIES CMA3 SERIESE. FUEL PIPING F.GENERAL VENTING REQUIREMENTS MAXIMUM VENT LENGTH Page Figure 6A 2. Exhaust Vent Termination Elbow H. Direct Venting Through a Sidewall1. Vent And Combustion Air Pipes Sidewall Venting Page 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 installationFigure K. CONDENSATE DRAIN LINE AND TRAP ASSEMBLY 2.Connection Of Power Supply Wires L.ELECTRICAL WIRING3. Connection Of Room Thermostat Wires 1. Electrical Branch Supply CircuitMaximum Recommended Thermostat Wire Length Feet Electrical Wire Diameter AWG4. BLOWER MOTOR SPEED WIRING Figure Speed Tap \ CMA3-50D36Static PressureCMA3-75D36 Speed Tap \ CMC1-50D36Static PressureCMC1-75D36 Speed Tap \ CMC1-50DV3Static PressureCMC1-75DV3 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 UPC.ADJUSTMENT OF BTU INPUT RATE D.BURNER ADJUSTMENT GAS PRESSURE CHART FOR CMA*/CMC* MODEL FURNACESE.SETTING TEMPERATURE RISE F.FURNACE CHECKOUT PROCEDURE VII. DEALER MAINTENANCE VI. INSTALLERS INSTRUCTIONS TO USER4. INDUCER BLOWER ASSEMBLY 2.CONDENSATE LINE/TRAP ASSEMBLYA.ELECTRICAL B.GENERAL INSPECTION5. GASKETS/SEALING MATERIALS 1.CLEANING THE COIL AIR SIDEC.HEAT EXCHANGER D.HOUSE AIR BLOWERFILTER REPLACEMENT FILTER MAINTENANCE PROCEDUREVIII. TROUBLESHOOTING DIAGNOSTIC FEATURESThe 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 Page Page Page APPENDIX - B WIRING DIAGRAMS