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Installation, Operation and
Installation, Operation and
Oil Fired Warm Air Furnaces
Do not store or use gasoline or other flammable liquids or vapors in the vicinity
Read this complete manual before
beginning installation. These instructions
must be kept with the furnace for future
f
Maintenance Manual
Maintenance Manual
O4LD-231A-20-R
FOR YOUR SAFETY:
of this, or any other appliance.
ALL INSTALLATIONS MUST MEET
ALL LOCAL, PROVINCIAL/STATE,
AND FEDERAL CODES WHICH MAY
DIFER FROM THIS MANUAL
NORDYNE
1
210C-0206 Rev A 10/23/2006
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Summary of Contents for Nordyne O4LD-231A-20-R
- Page 1 Installation, Operation and Maintenance Manual Maintenance Manual Oil Fired Warm Air Furnaces O4LD-231A-20-R FOR YOUR SAFETY: Do not store or use gasoline or other flammable liquids or vapors in the vicinity of this, or any other appliance. ALL INSTALLATIONS MUST MEET...
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Page 2: Table Of Contents
WIRING DIAGRAM MODEL O4LD-231A-20-R....................... 13 APPENDIX C R7184 DETAILED SEQUENCE OF OPERATION ................14 R7184 LED DIAGNOSTIC LIGHT ........................... 16 FINAL CHECK OUT..............................22 HOMEOWNER’S REFERENCE TABLE........................22 PARTS LISTING: LOWBOY MODEL: O4LD-231A-20-R ......ERROR! BOOKMARK NOT DEFINED. 210C-0206 Rev A 10/23/2006... -
Page 3: Introduction
Contractors of America, describes a suitable MODEL O4LD-231A-20-R procedure for calculating the maximum hourly heat loss. O4LD-231A-20-R MODELS are rear breeched oil fired forced air lowboy furnaces, with output 3. LOCATION OF UNIT capacity of 170,000 Btu/h to 190,000 Btu/h. They The furnace should be located such that the flue are shipped in two pieces;... -
Page 4: Combustion Air
The blower speed must be checked and adjusted to compensate for the pressure drop caused by the evaporator coil. Refer to Appendix B for THE FURNACE MUST BE CONNECTED recommended wiring and electrical connections of TO A FLUE HAVING SUFFICIENT DRAFT the air conditioning controls. -
Page 5: Electrical Connections
The L4064W temperature sensitive fan switch contains a heater-wrapped bi-metal to actuate the fan switch independent of the temperature at the O4LD-231A-20-R helical sensing element. The time from ignition, to Accessories requiring 120 VAC power sources the blower on function is approximately 30 such as electronic air cleaners and humidifier seconds. -
Page 6: Oil Filter
13. OIL BURNER NOZZLES NOTE: Beckett AF Series Burner electrode specifications have been revised. They should be The O4LD-231A-20-R model series is certified for adjusted to be 5/16” above the nozzle centerline. multiple firing rates ranging from 170,000 to 225,000 Btu/h. By manipulating the oil burner 16. -
Page 7: Circulating Air Blower
18. CIRCULATING AIR BLOWER speed pulley by ruining the threads. The blower speed can be modified by the changing of the The O4LD-231A-20-R furnaces are equipped with blower pulley. A smaller blower pulley will cause belt drive blower systems. -
Page 8: Maintenance And Service
access to the cleaning ports. Loosen the nuts on the radiator clean-outs. DO NOT REMOVE THE NUTS. Remove the covers carefully to avoid DO NOT CONNECT POWER LEADS tearing the gaskets. A wire brush can be used to BETWEEN MOTOR SPEEDS. -
Page 9: Operating Instructions
shut off electrical power to the furnace, replace 20. OPERATING INSTRUCTIONS the fan belt, and then restore power. The blower Before Lighting will start immediately. Once temperature has dropped, the oil burner will 1. Open all supply and return air registers and resume and continue until the thermostat is grilles. -
Page 10: Oil Burner Air Adjustment
Beckett AF Series Oil Burners (For use with chimney vented units) Pump Furnace Model Burner Model Nozzle Flow Rate Head Static Plate Pressure O4LD-231A-20-R AF81WF 1.50 / 70°B 1.50 2-¾ in. PSIG USGPH 170,000 BTUH O4LD-231A-20-R AF81WF 1.65 / 70°B 1.65... - Page 11 Pulley Tons Motor CFM Range Belt Motor Belt Motor Motor Blower Motor Blower O4LD-231A-20-R 3½ x ½ 6 x ¾ 4L410 1 HP 3½ x ½ 6 x ¾ 4L410 1 HP 3 – 5 1 HP 1600 - 2200...
- Page 12 0.25 0.30 0.40 0.50 0.60 2601 2525 2449 2334 2164 2007 2549 2474 2399 2288 2120 1967 O4LD-231A-20-R 1 HP 14.0 85°F 6 x ¾ 2497 2424 2350 2241 2077 1927 2444 2373 2301 2194 2034 1887 210C-0206 Rev A 10/23/2006...
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Page 13: Wiring Diagram Model O4Ld-231A-20-R
Appendix B WIRING DIAGRAM MODEL O4LD-231A-20-R 210C-0206 Rev A 10/23/2006... -
Page 14: Appendix C R7184 Detailed Sequence Of Operation
APPENDIX C R7184 DETAILED SEQUENCE OF OPERATION Power is applied to unit. The R7184 completes a self-diagnostic procedure. If no light or flame is present, and unit passes its self-diagnostic procedure, the control enters into the idle mode. Thermostat calls for heat: A) Safety check is made for flame (4 second delay). - Page 15 IDLE STATE THERMOSTAT CALLS FOR HEAT R7184 SEQUENCE of OPERATION SAFETY CHECK FOR FLAME REMAINS IN IDLE STATE (5 SEC.) NO FLAME FLAME BURNER MOTOR & IGNITOR START 10 SEC. SAFETY CHECK FOR FLAME (5 SEC.) NO FLAME FLAME SOLENOID VALVE OPENS LOCKOUT STATE TRIAL FOR IGNITION R7184:...
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Page 16: R7184 Led Diagnostic Light
TROUBLESHOOTING R7184 LED DIAGNOSTIC LIGHT IMPORTANT: Due to the potential hazard of line The LED diagnostic light has several functions. It voltage, only a trained, experienced service technician indicates the state or mode in which the oil burner is should perform the troubleshooting procedure. operating. - Page 17 PRELIMINARY CHECKS: ELECTRICAL SHOCK HAZARD. Make sure that limit switches are closed and those contacts are clean. TROUBLESHOOTING IS DONE WITH THE SYSTEM POWERED. BE CAREFUL TO Check for line voltage power on the oil primary control black and white lead wires. OBSERVE NECESSARY PRECAUTIONS...
- Page 18 Table C-3: R7184 Troubleshooting continued from previous page Procedure Status Corrective Action Indicator light turns off. Eliminate external light source or permanently shield cad cell. Replace cad cell with new cad cell and recheck. Shield cad cell from external If indicator light does not turn off, remove cad cell lead wires light.
- Page 19 Table C-3: R7184 Troubleshooting continued from previous page Procedure Status Corrective Action 10. Check cad cell. Indicator light is on. Remount control onto burner housing. Go to step 6. • Disconnect line voltage power and open line switch. • Remove existing cad cell and replace with new cad cell.
- Page 20 Table C-4: System and General Troubleshooting continued Problem Possible Cause Remedy Photo Cell wiring shorted or room Check photo cell (cad cell) wiring for short circuits. Also, check for room light leaking into photo cell light leaking into cad cell compartment. Repair light leak if necessary. compartment See Table C-3.
- Page 21 Table C-4: System and General Troubleshooting continued Problem Possible Cause Remedy System temperature rise ideally should not exceed 85°F. Check for System temperature rise too high. clogged air filters. Check blower fan for excess dirt build-up or debris. Speed up blower fan if necessary. Check “fan off”...
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Page 22: Final Check Out
Table C-4: System and General Troubleshooting continued Problem Possible Cause Remedy Airflow blocked or dirty air filter. Clean or replace air filter. Supply air temperature too Check all dampers. Open closed dampers including registers in unused hot. Insufficient airflow. rooms. Check system temperature rise. If temperature rise is too high, speed up blower fan. - Page 23 210C-0206 R0 10/23/2006...
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Page 24: Parts Listing: Lowboy Model: O4Ld-231A-20-R
PARTS LISTING: LOWBOY MODEL: O4LD-231A-20-R Ref. No. Description Part No. Left Side Panel Heating Compartment 29040N Right Side Panel Heating Compartment 29040N Left Side Panel Blower Compartment 29048N Right Side Panel Blower Compartment 29047N Upper Rear Panel Blower Compartment 29062N... - Page 25 Blower Pulley 6 X 3/4 2240006 Fan Belt 4L410 2240020 Blower Base Feet LH 8173B2 Blower Base Feet RH 8173B1 Blower Base Feet Rubber Grommet (4 required) 26415 Nordyne, Inc., 8000 Phoenix Parkway, O’Fallon, Missouri, 63368 210C-0206 Rev A 10/23/2006...
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