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: IF YOU DO NOT FOLLOW THE SAFETY PRECAUTIONS BELOW AND IN THIS
MANUAL, A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL
INJURY, OR LOSS OF LIFE.
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE
VICINITY OF THIS OR ANY OTHER APPLIANCE.
INSTALLATION AND SERVICE MUST BE PERFORMED BY A QUALIFIED INSTALLER, SERVICE
AGENCY OR THE GAS SUPPLIER. (REFERRED TO IN THESE INSTRUCTIONS AS A QUALIFIED
HEATING CONTRACTOR).
PLEASE READ THESE INSTRUCTIONS PRIOR TO INSTALLATION, INITIAL FIRING, AND BEFORE
PERFORMING ANY SERVICE OR MAINTENANCE. THESE INSTRUCTIONS MUST BE LEFT WITH
THE HOMEOWNER AND SHOULD BE RETAINED FOR FUTURE REFERENCE BY QUALIFIED
SERVICE PERSONNEL.
MO-440
ECN 5587-MA 190812
ECM OPERATION MANUAL
FOR USE WITH MODEL:
SINGLE STAGE
OH6FA072DV4
OH8FA119DV5
OD6F/RA072DV5
OL6F/RA072DV5
THERMO PRODUCTS, LLC.
DENTON, NC 27239
PHONE: 800-476-4328
2-STAGE
OH6FX072DV4
OD6F/RX072DV5
OL6F/RX072DV5
BOX 237
Made IN USA
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Summary of Contents for Thermo Pride OH6FA072DV4
- Page 1 ECM OPERATION MANUAL FOR USE WITH MODEL: SINGLE STAGE 2-STAGE OH6FA072DV4 OH6FX072DV4 OH8FA119DV5 OD6F/RA072DV5 OD6F/RX072DV5 OL6F/RA072DV5 OL6F/RX072DV5 : IF YOU DO NOT FOLLOW THE SAFETY PRECAUTIONS BELOW AND IN THIS MANUAL, A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY, OR LOSS OF LIFE.
- Page 3 All installations and services must be performed by qualified service personnel. INDEX SECTION BEGINNING PAGE I. BLOWER CONTROLLER INFORMATION A. TERMINAL DEFINITIONS & FIELD WIRING B. WIRING & SWITCHES C. INPUTS D. OUTPUTS E. OPERATING MODES F. CFM TABLES II. ECM TROUBLESHOOTING A.
- Page 5 All installations and services must be performed by qualified service personnel. I. BLOWER CONTROLLER INFORMATION A. TERMINAL DEFINITIONS & FIELD WIRING Burner Harness Connector P2 Pin 1 – Limit switch connection. Pin 2 – 120 VAC Line connection. Pin 3 – Burner pilot contact.
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Page 6: Wiring & Switches
All installations and services must be performed by qualified service personnel. B. WIRING & SWITCHES : TURN OFF THE ELECTRICAL POWER to the furnace before attempting to disconnect blower wiring. OH6 / OH8 / OD6 /OL6 Single – Stage Figure 1: Blower Wiring... - Page 7 All installations and services must be performed by qualified service personnel. OH6 / OD6 / OL6 2 - STAGE Figure 2: Blower Wiring...
- Page 8 All installations and services must be performed by qualified service personnel. Figure 3: Board Layout with Switches...
- Page 9 All installations and services must be performed by qualified service personnel. C. Inputs Power supplies Line voltage is applied between the "S1" and "N1" quick connect terminals. 24 VAC Class II Transformer secondary voltage supplied to X and C Limit Switch The 120VAC optically isolated limit switch input is connected on pin P2-1 &...
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Page 10: Operating Modes
All installations and services must be performed by qualified service personnel. Compressor contactor The control provides switched 24VAC to operate a compressor contactor. Rating shall be class 2 - 24 VAC pilot duty @ 24 VAC (< 200mA). EAC (electronic air cleaner) The control provides a 120VAC output for an electronic air cleaner. - Page 11 All installations and services must be performed by qualified service personnel. Anti-Short Cycle Operation To prevent compressor short cycling, a call for cooling will be ignored for four minutes after the termination of any cooling call. The anti-short cycle delay is also in effect at power-up. Heat Mode When a call for heat ("W") is received from the thermostat, if the “Cool”...
- Page 12 The following tables contain blower speed settings and their respective air flow rates for the ECM blower motor. To change air flow rates from that of the shipped settings, use the respective SW1 dipswitch on the furnace’s integrated control board (see Figure 3). OH6FA072DV4 Heating Speed Set-ups Low Fire...
- Page 13 All installations and services must be performed by qualified service personnel. Cooling Speed Set-ups Static Pressure (Amps/Watts) Air Flow Control SW 1 Switch Settings Clg. Tonage Cool Continuous 6-OFF 1.2/109 2.1/186 5-OFF 4-OFF 6-OFF 1017 1.8/160 2.5/230 5-OFF 4-ON 6-OFF 1210 2.4/220 3.3/308...
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Page 14: High Capacity
All installations and services must be performed by qualified service personnel. OH6FX072DV4 Heating Speed Setups LOW CAPACITY HIGH CAPACITY LOW FIRE HI FIRE LOW FIRE HI FIRE BTUH CONTROL 60,000 72,000 72,000 90,000 SW 1 HEATING APPROX. APPROX. APPROX. APPROX. SWITCH CFM/RISE (ºF) CFM/RISE (ºF) - Page 15 All installations and services must be performed by qualified service personnel. OH8FA119DV5 Heating Speed Set-ups Low Fire Med Fire High Fire Static Pressure BTUH 101,000 119,000 132,000 Amps/Watts Control SW 1 Switch Heating Aprox. Aprox. Aprox. Settings Rise (F Rise (F Rise (F 1.6/146 2.5/233...
- Page 16 All installations and services must be performed by qualified service personnel. OH8FA119DV5 Cooling Speed Set-ups Static Pressure Air Flow Amps/Watts Control SW 1 Switch Clg. Dehum Settings Tonnage Cool Continuous 6-OFF 1.0/89 1.8/161 5-OFF 4-OFF 6-OFF 1.4/121 2.1/192 1018 5-OFF 4-ON 6-OFF 1.8/159...
- Page 17 All installations and services must be performed by qualified service personnel. OD6F/RA072DV5 Heating Speed Set-ups Low Fire Med Fire High Fire Static Pressure BTUH 60,000 72,000 90,000 (Amps/Watts) Control SW 1 Switch Heating Aprox. Rise Aprox. Rise Aprox. Rise Settings 3-OFF 1.3/114 1.9/173...
- Page 18 All installations and services must be performed by qualified service personnel. OD6F/RA072DV5 Cooling Speed Set-ups Static Pressure Air Flow (Amps/Watts) Fan Control SW 1 Switch Clg. Settings Tonage Cool Continous 6-OFF 1.3/115 2.0/185 5-OFF 4-OFF 6-OFF 1017 1.8/168 2.5/234 5-OFF 4-ON 6-OFF 1210...
- Page 19 All installations and services must be performed by qualified service personnel. OD6F/RX072DV5 Heating Speed Set-ups HEATING AIR FLOW / TEMPERATURE RISE LOW CAPACITY HIGH CAPACITY LOW FIRE HI FIRE LOW FIRE HI FIRE BTUH CONTROL 60,000 72,000 72,000 90,000 SW 1 APPROX.
- Page 20 All installations and services must be performed by qualified service personnel. OL6F/RA072DV5 Heating Speed Set-ups Furnace M otor Current Draw (Am ps/ / W atts) vs. External Static P ressure (in W .C.) L ow Fire M ed F ire High Fire BTUH 60,000...
- Page 21 All installations and services must be performed by qualified service personnel. OL6F/RA072DV5 Cooling Speed Set-ups Furnace Motor Current Draw (Amps / Watts) vs. External Static Pressure (in W.C) Air Flow Contr ol SW 1 Sw itch Clg. Se tting Tonnage Cool Continuous 6-OFF...
- Page 22 All installations and services must be performed by qualified service personnel. ECM TROUBLE SHOOTING A. DIAGNOSTC FEATURES The control board is equipped with 4 green Input Status LEDs and 1 red Board Status LED. These are intended to provide a quick view into furnace performance without requiring a voltmeter. The green Input Status LEDs are driven by the “Y”, “W”, “G”, and “DEHUM”...
- Page 23 All installations and services must be performed by qualified service personnel. B. GENERAL GUIDELINES TO TROUBLESHOOTING GE ECM – DRIVEN SYSTEMS Disconnect power from unit before removing or replacing connectors, or servicing motor. Wait at least 5 minutes after disconnecting power before opening motor. SYMPTOM CAUSE/PROCEDURE Motor rocks slightly when starting...
- Page 24 All installations and services must be performed by qualified service personnel. Excessive noise Determine if it’s air noise, cabinet, duct or motor noise – interview customer, if necessary Noisy blower or cabinet Check for loose blower housing, panels, etc. ...
- Page 25 All installations and services must be performed by qualified service personnel. T’stat in bad location? Figure 4: ECM pin connectors...
- Page 26 All installations and services must be performed by qualified service personnel. C. TROUBLESHOOTING CHARTS ECM 2.3/5.0 THIS GUIDE SHOULD BE USED IN THE CASE OF A STOPPED OR MANFUNCTIONED ECM BLOWER MOTOR. THE FOLLOWING SHOULD HELP ESTABLISH THE TYPE OF MALFUNCTION OR DEVIATION FROM THE NORMAL BLOWER OPERATION.
- Page 27 All installations and services must be performed by qualified service personnel. PERFECT SPEED THIS GUIDE SHOULD BE USED IN THE CASE OF A STOPPED OR MANFUNCTIONED ECM BLOWER MOTOR. THE FOLLOWING SHOULD HELP ESTABLISH THE TYPE OF MALFUNCTION OR DEVIATION FROM THE NORMAL BLOWER OPERATION. TO USE THIS DIAGRAM, YOU JUST NEED TO FOLLOW THE INSTRUCTIONS IN THE BOXES.
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Page 28: Sequence Of Operation
All installations and services must be performed by qualified service personnel. Sequence of Operation BLOWER Off- Delay Active? HEAT On-Delay LIMIT Mode On? Ended? Active? Active? 1.BURNER Off BURNER On 2. HEAT mode Off 3. BLOWER Off-Delay Started 4. Status LED Off DEHUM COOL On-Delay... - Page 29 All installations and services must be performed by qualified service personnel. Sequence of Operation Glossary Inputs: LIMIT - 120vac power from the High Limit Switch used to power the burner. W- Switched 24vac indicating a Heat call from the thermostat. Y - Switched 24vac indicating a Cool call from the thermostat.