Heat Controller MGD-B Series Owner'S Manual Download | Manualshive

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OWNER’S MANUAL

Manufactured Home

Downflow Gas Furnace:

MGD-B Series

Heat Controller, Inc. • 1900 Wellworth Ave. • Jackson, MI 49203 • (517)787-2100 • www.heatcontroller.com

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Summary of Contents for MGD-B Series

Page 1: ...OWNER S MANUAL Manufactured Home Downflow Gas Furnace MGD B Series Heat Controller Inc 1900 Wellworth Ave Jackson MI 49203 517 787 2100 www heatcontroller com ...

Page 2: ...Owner s Manual MGD B SERIES GAS FURNACE Heat Controller Inc 1 ...

Page 3: ...Heat Controller Inc MGD B SERIES GAS FURNACE Owner s Manual See warranty card that was provided with your unit 2 ...

Page 4: ...ill place 115 VAC on the HEAT terminal on the control board at the completion of the time delay and allow the blower motor run on the selected blower motor speed tap Power ON When the line power 115 VAC is turned on to the furnace the 115 VAC is applied between the L1 terminal and the neutral terminal on the control board The step down transformer applies 24 VAC to the 24 VAC and the COM terminals...

Page 5: ...the pressure ports on the pressure switch providing the negative and positive pressures to the switch If the pressures applied to the positive and negative ports Diﬀerential Pressure of the pressure switch exceed 0 2 wc 05 wc the switch electrical contacts close providing a 24 VAC signal back to the control board thru the blue wires attached to the 9 pin plug indicating to the control board softwa...

Page 6: ... turns on the blower when sufficient heat has built up inside the furnace Gas Valve The gas valve for all models are 100 shut off type and will fail safe if for some reason the gas is turned off INSPECTION AND MAINTENANCE BY THE HOMEOWNER Make a visual inspection of the furnace every 30 days Do the following Filters Clean filters at least every 3 months and replace as needed Size 16 x20 x1 Motor L...

Page 7: ... 7 MICROAMPS 0 000001 0 0000037 AMPS WITH THE CURRENT METER CONNECTED IN SERIES BETWEEN THE FLAME SENSOR AND THE CONTROL BOARD THEN UNPLUG THE 9 PIN PLUG AT THE CONTROL BOARD AND PERFORM A RESISTANCE TEST OHM Ω TEST ON THE YELLOW FLAME SENSOR WIRE IF THE OHMS Ω METER DOES NOT INDICATE A READING OR SHOWS THE SYMBOL SHOWS A OPEN WIRE THEN REPLACE THE FLAME SENSOR WIRE OR THE WIRE HARNESS IF THE OHMS...

Page 8: ... TERNINALS THEN GO TO STEP 6 IF THERE IS 24 VAC TO THE GAS VALVE ELECTRICAL TERMINALS THE GAS VALVE TOGGLE SWITCH IS IN THE ON POSITION AND THERE IS NO FLAME PRESENT THEN CHECK THE GAS VALVE OUTLET MANIFOLD PRESSURE TO DETERMINE IF THERE IS 3 5 INCHES OF WATER INWC GAS PRESSURE FOR NATURAL GAS OR 10 0 INCHES OF WATER INWC GAS PRESSURE FOR PROPANE GAS WHEN THERE IS 24 VAC PRESENT AT THE ELECTRICAL ...

Page 9: ...VAC BETWEEN BOTH CONTACTS AND COMMON AND THE COMBUSTION AIR BOOSTER MOTOR IS NOT OPERATING REPLACE THE PRESSURE SWITCH CALL FOR HEAT BURNER FLAME WILL NOT LIGHT FOUR FLASHS OPEN LIMIT CONTROL USE A VOLT METER TO CHECK FOR 24 VAC AT THE UPPER LIMIT CONTROL AND THE PRIMARY LIMIT CONTROL TO CHECK THE VOLTAGE PLACE ONE PROBE OF THE VOLT METER ON THE TERMINAL OF THE LIMIT CONTROL AND THE OTHER PROBE ON...

Page 10: ...04 2009 07 2009 ...

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