Page 1
Installation, Operation and Maintenance Manual Oil Fired Warm Air Furnaces HML-C (Up-Flow Model) HMLV-C (Up-Flow Model with ECM) ALL INSTALLATIONS MUST MEET ALL LOCAL, PROVINCIAL/STATE, AND FEDERAL CODES WHICH MAY DIFFER FROM THIS MANUAL ECR International Limited Read this complete manual before beginning installation.
The minimum installation clearances are listed in MODELS HML-C AND HMLV-C Table 1. Models HML-C and HMLV-C are oil fired forced air up- Table 1: Clearances – (Inches) flow furnaces with an output capacity range of 56,000 BTU/Hr. to 95,000 BTU/Hr.
installation, the dampers or air controlling means must prevent chilled air from entering the furnace. If the dampers are manually operated, there must be a means CHIMNEY VENTED VERSIONS OF THE of control to prevent the operation of either system FURNACE MUST BE CONNECTED TO A unless the dampers are in the full heat or full cool position.
At the end of the fan off time cycle The power requirement for the HML-C and HMLV-C the burner will be energized, initiating a normal burner models is: 120 VAC, 1 Ø, 60 Hz., 12A.
The HML-C and HMLV-C are certified for multiple generating windings of the direct drive motor. firing rates, ranging from 56,000 to 95,000 Btu/h. By...
PLACE. 19a. CIRCULATING AIR BLOWER (HML-C) DISCONNECT THE POWER SUPPLY TO THE FURNACE BEFORE OPENING THE BLOWER The HML-C and HMLV-C furnace models are equipped with direct drive blower systems. HML-C models are ACCESS DOOR TO SERVICE THE AIR equipped with PSC motors; HMLV-C models are FILTER, FAN AND MOTOR.
21. OPERATING INSTRUCTIONS (HML-C) The furnace filter(s) should be inspected, cleaned or Before Lighting replaced monthly. The furnace is factory equipped with a semi-permanent type filter.
After three or four minutes of burner operation, the limit operation and continue until the thermostat is control should turn the burner off. When the limit function satisfied. Restore the thermostat setting to a test is complete, shut off electrical power to the furnace, comfortable temperature.
Appendix A- HML-C AND HMLV-C HML-C and HMLV-C furnaces may be used with the following oil burners. Please note: The Beckett AF, and Riello 40F oil burners are for applications using indoor air for combustion only. For sidewall venting applications utilizing outdoor air for combustion, use the Beckett AFII or the Riello 40BF (Balanced Flue) oil burners only.
A.2 BURNER ELECTRODES NOTE: USE OF THE INLET AIR SHUT-OFF COULD CAUSE POST COMBUSTION NOZZLE Adjustment of the electrode tips with respect to each DRIP. other, the nozzle, and to the rest of the burner is very important to ensure smooth start-ups and to permit A.4 SPECIAL INSTRUCTIONS FOR UNITS efficient combustion.
Page 14
Plenum Openings Filter Shipping Furnace Flue Weight Return Model Diameter Width Depth Height Supply Type Size (LB.) Side Bottom HML-C 16 x 25 x 30-3/4 49-5/8 20½ x 20 14 x 22 14 x 22 Permanent HMLV-C 30173 Rev B 4/29/2008...
Page 15
Table A-10 ECM Blower Set-Up (HMLV-C) DIP SWITCH ADJUSTMENT CHART FOR INPUT 0.50 USGPH TO 0.85 USGPH SW1 - HEAT SW2 - COOL DIP Switch POS. POS. Position INPUT DIP Switch Position AC Size USGPH (TON) 0.65 0.85 0.75 0.50 SW3 - ADJUST SW4 - DELAY DIP Switch...
Chimney Vent Burner Wiring Diagram APPENDIX B: WIRING DIAGRAMS HML-C HMLV-C LEGEND/ legende INDOOR BLOWER ventilateur FACTORY WIRING 120 V N (COMMON) principale 24 V filage a l'usine MOTOR FIELD WIRING moteur 120 V filage au champs 24 V 530SE...
Page 17
Direct Vent Burner Wiring Diagram HML-C HMLV-C LEGEND/ legende FACTORY WIRING 120 V INDOOR 24 V filage a l'usine BLOWER FIELD WIRING 120 V ventilateur TO T1 filage au champs principale 24 V N (COMMON) MOTOR TO T2 moteur GROUND/Terre RIELLO 40BF BURNER/brûleur...
the heat anticipator. Set the heat anticipator to the OPERATION OF OIL BURNER amperage measured. Once the furnace flue pipe, electrical and oil line NOTE: THE FURNACE SHOULD BE RUN connections have been made, use the following THROUGH AT LEAST THREE FULL CYCLES instructions to set the burner: BEFORE LEAVING THE INSTALLATION, TO Shut off the electrical power to the furnace.
APPENDIX C OIL PRIMARY CONTROL DETAILED SEQUENCE OF OPERATION Power is applied to unit. The oil primary control 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 20
FIGURE 4: UNITED TECHNOLOGIES 1158-120 FAN TIMER BOARD (HML-C) FIGURE 5: UNITED TECHNOLOGIES 1168-1 ECM TAP BOARD (HMLV-C) 30173 Rev B 4/29/2008...
Page 21
IDLE STATE THERMOSTAT CALLS FOR HEAT OIL PRIMARY CONTROL SAFETY CHECK FOR FLAME REMAINS IN IDLE STATE (5 SEC.) SEQUENCE of OPERATION NO FLAME FLAME BURNER MOTOR & IGNITOR START 10 SEC. SAFETY CHECK FOR FLAME (5 SEC.) NO FLAME FLAME SOLENOID VALVE OPENS LOCKOUT STATE...
Page 22
Table C-1: 1158-120 ELECTRONIC FAN TIMER BOARD (EFT) DETAILED SEQUENCE OF OPERATI Mode Action System Response EFT closes the oil primary control T - T connections). Ignition system and the oil primary control start the furnace. Oil flows as long as the oil Thermostat calls for heat.
TROUBLESHOOTING OIL PRIMARY CONTROL LED DIAGNOSTIC LIGHT IMPORTANT: Due to the potential hazard of line voltage, only a trained, experienced service technician The LED diagnostic light has several functions. It should perform the troubleshooting procedure. indicates the state or mode in which the oil burner is operating.
Page 24
PRELIMINARY CHECKS: Make sure that limit switches are closed and those ELECTRICAL SHOCK HAZARD. contacts are clean. TROUBLESHOOTING IS DONE WITH THE Check for line voltage power on the oil primary SYSTEM POWERED. BE CAREFUL TO control black and white lead wires. OBSERVE ALL NECESSARY PRECAUTIONS Refer to Table C-4 or C-5 for further troubleshooting TO PREVENT ELECTRICAL SHOCK OR...
Page 25
Table C-3: Oil Primary Control 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. 4. Shield cad cell from external If indicator light does not turn off, remove cad cell lead wires light.
Page 26
Table C-3: Oil Primary Control Troubleshooting continued. 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 27
Table C-4: System and General Troubleshooting continued Problem Possible Cause Remedy Photo Cell wiring shorted or Check photo cell (cad cell) wiring for short circuits. Also, check room light leaking into photo for room light leaking into cad cell compartment. Repair light Furnace will not start.
Page 28
Table C-4: System and General Troubleshooting continued Problem Possible Cause Remedy System temperature rise ideally should not exceed 85°F. Check System temperature rise too for clogged air filters. Check blower fan for excess dirt build-up high. or debris. Speed up blower fan if necessary. Check “fan off”...
Table C-4: System and General Troubleshooting continued Problem Possible Cause Remedy Airflow blocked or dirty air Clean or replace air filter. filter. Supply air temperature Check all dampers. Open closed dampers including registers in too hot. Insufficient airflow. unused rooms. Check system temperature rise. If temperature rise is too high, speed up blower fan.
HOMEOWNER’S REFERENCE TABLE Model No. Serial No. Date Installed Contractor Contact Address Postal Code Telephone No. After Hours No. FUEL SUPPLIER Fuel Oil Supplier Contact Telephone No. After Hours No. IF DIFFERENT FROM INSTALLATION CONTRACTOR: Service Tech. Telephone No. After Hours No. 30173 Rev B 4/29/2008...
PARTS LISTING: HIGHBOY MODEL: HML-80C AND HMLV-80C Ref. Description Part No. Left Side Panel Assembly 29187L Right Side Panel Assembly 29186L Rear Panel 29205L Blower Division Assembly 29189 Base Panel 26216 Inner Front Panel 30066 Blower Access Panel 27721L Top Panel 21437L Heat Exchanger Assembly 28675...
Page 32
Description Part No. Blower Assembly Direct Drive 30146 Blower Assembly Direct Drive ECM 109007271 Blower Housing and Wheel, 100-10T DD (HML-C and HMLV- 30626 Blower Motor, 1/2 hp, 4-Speed 102000131 Blower Motor, 1/2 hp, ECM Programmed 109007272 Motor Mounting Band – TR6884B 17811 Motor Mount Arms –...
Need help?
Do you have a question about the HML-C and is the answer not in the manual?
Questions and answers