Manuals / Thermo Products / Household Appliance / Furnace

Thermo Products CMC1-75DV3N, CMC1-50DV3N, CMC1-50D36N, CMC1-75D36N BLOWER MOTOR SPEED WIRING Figure

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

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4. BLOWER MOTOR SPEED WIRING

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

4. BLOWER MOTOR SPEED WIRING

Figure 15.

BLOWER DELAY SETTINGS

To delay fan		Set Switch
turn-on by:	#1	#2
15 sec.	Off	Off
30 sec.	Off	On
*45 sec.	On	Off
60 sec,	On	On

To delay fan	Set Switch
turn-off by:	#3	#4
60 sec.	On	On
90 sec.	Off	On
*120 sec.	On	Off
180 sec.	Off	Off

*Factory Settings For Optimal Performance

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Thermo Products CMC1-75DV3N, CMC1-50DV3N, CMC1-50D36N, CMC1-75D36N, CMA3-50D36N, CMA3-75D36N BLOWER MOTOR SPEED WIRING Figure

FAQ

Who should perform the installations and services for the Furnace?

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

What are the different blower delay settings?

The blower delay settings range from 15 seconds to 180 seconds, with different switch configurations for turn-on and turn-off.

Can I adjust the factory settings for optimal performance?

The factory settings are optimized for performance. Any adjustments should be made by qualified service personnel.

Contents

WHAT TO DO IF YOU SMELL GAS FOR YOUR SAFETYMODELS CMA3-50D36N, CMA3-75D36N CMC1-50D36N, CMC1-75D36N CMC1-50DV3N, CMC1-75DV3NSECTION 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 CMA3-50D36 II. FURNACE SPECIFICATIONSDIMENSIONS MODELCMC1-75D36 DIMENSIONSMODEL CMC1-50D36CMC1-75DV3 DIMENSIONSMODEL CMC1-50DV3INSTALLATION 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 Cottage Base Model 01COT-BASE Coil Cabinet Model CE113S / CE213TCE113S Figure 1BFigure 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 1. Electrical Branch Supply Circuit L.ELECTRICAL WIRING2.Connection Of Power Supply Wires 3. Connection Of Room Thermostat WiresMaximum Recommended Thermostat Wire Length Feet Electrical Wire Diameter AWG4. BLOWER MOTOR SPEED WIRING Figure Pressure CMA3-50D36Speed Tap \ StaticCMA3-75D36 Pressure CMC1-50D36Speed Tap \ StaticCMC1-75D36 Pressure CMC1-50DV3Speed Tap \ StaticCMC1-75DV3 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 USERB.GENERAL INSPECTION 2.CONDENSATE LINE/TRAP ASSEMBLY4. INDUCER BLOWER ASSEMBLY A.ELECTRICALD.HOUSE AIR BLOWER 1.CLEANING THE COIL AIR SIDE5. GASKETS/SEALING MATERIALS C.HEAT EXCHANGERDIAGNOSTIC FEATURES FILTER MAINTENANCE PROCEDUREFILTER REPLACEMENT VIII. TROUBLESHOOTINGThe 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