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24

 P/N 30149, Rev. G [12/15/2016]

Table C2: System and General Troubleshooting

Problem

Possible Cause

Remedy

Furnace will not start.

Thermostat not calling for heat

Check thermostat and adjust.

Check thermostat for accuracy; if mercury switch type, it might be off level.

No power to furnace

Check furnace switch, main electrical panel furnace fuse or circuit breaker. 

Look for any other hand operated switch, such as old poorly located furnace 

switch, which was not removed during furnace replacement.

Thermostat faulty

Remove thermostat wires from oil primary control terminals T-T. Place a 

jumper across T-T. If furnace starts, replace thermostat, thermostat sub-base 

(if equipped), or both.

Oil primary control faulty

Check reset button on oil primary control. 

Remove thermostat wires from oil primary control terminals T - T. 

Check for 24V across T -T. If no voltage is present, check for 115V to oil 

primary control. 

If 115V is present, refer to oil primary control documentation provided with 

oil burner.

Photo Cell wiring shorted or 

room light leaking into photo 

cell compartment

Check photo cell (cad cell) wiring for short circuits. 

Check for room light leaking into cad cell compartment. Repair light leak if 

necessary. 

Open safety switch

Check for open limit or auxiliary limit. 

Check internal wiring connections; loose connectors, etc.

Furnace will not start 

without first pushing oil 

primary control reset 

button.

(Happens on frequent 

basis)

No fuel oil

Check fuel oil supply. 

Check all hand operated fuel oil valves are in open position. Fill oil storage 

tank if necessary.

Clogged nozzle

Replace nozzle with high quality replacement. 

Use rating plate or Tables in Appendix A as a guide.

Clogged oil filter

Replace oil tank filter or in-line filter if used.

Low oil pump pressure

Connect pressure gauge to oil pump. 

Adjust pump pressure, or replace oil pump if necessary. 

Verify erratic pressure readings are not caused by defective fuel oil line.

Air getting into fuel oil lines, or 

fuel oil line dirty, clogged, or in 

some manner defective

Check fuel oil lines. 

Replace any compression fittings found with high quality flared fittings. 

Check for signs of oil leaks. Any oil leak is potential source of air or 

contaminants.

Defective burner motor

Check burner motor.

If burner motor is cutting out on over-load, determine why. Replace if neces-

sary.

WARNING

Electrical shock hazard.  Only a trained, experienced 

service technician should perform troubleshooting 

procedure.  Failure to do so could result in death or 

serious injury.

!

  

APPENDIX C - SEQUENCE OF OPERATION AND TROUBLESHOOTING

Summary of Contents for BML-60B22

Page 1: ...BMLV Lowboy Model with ECM Series B Oil Fired Warm Air Furnaces INSTALLATION OPERATION MAINTENANCE MANUAL P N 30149 Rev G 12 15 2016 ECR International 2210 Dwyer Avenue Utica NY 13501 web site www ecr...

Page 2: ...anent Shipping Weight LB Width A Length B Height C Supply D x E Return F x G Diameter Height H BML BMLV 22 51 32 20 x 19 20 x 18 5 26 20 x 20 x1 240 LB 55 8 cm 130 8 cm 81 3 cm 52 cm x 49 cm 52 1 cm x...

Page 3: ...ation 8 15 Oil Filter 8 16 Oil Burner Nozzles 8 17 Oil Burner Adjustment 8 18 Burner Electrodes 8 19 Burner Primary Safety Control 9 20 Combustion Chamber 9 21a Circulating Air Blower BML BMLV 9 21b C...

Page 4: ...Canada HRAI or by other means prescribed or approved by the local authority having jurisdiction United States Manual J titled Load Calculation published by the Air Conditioning Contractors of America...

Page 5: ...ust have a control to prevent operation of either system unless dampers are in full heat or full cool position Air heated by the furnace shall not pass through evaporator coil unless coil is specifica...

Page 6: ...pipes sloping upward toward the chimney at a rate of one quarter inch per foot Flue pipe should not be smaller in cross sectional area than flue collar on the furnace Flue pipe should connect to chim...

Page 7: ...it control is thermally operated and automatically resets Limit control is factory installed pre set and is not adjustable If limit control opens with United Technologies 1158 120 BML electronic fan c...

Page 8: ...fficiency BML and BMLV operate most efficiently with No 1 smoke spot on Bacharach Scale Dust will eventually build up on air moving components of oil burner assembly resulting in decreased air supply...

Page 9: ...ch run and lack block ends on the trunk ducts These systems may require modification to provide some resistance to the airflow to prevent over amping of direct drive blower motor Selecting a lower blo...

Page 10: ...ow for 7 5 minutes After 7 5 minutes has elapsed motor will increase to 100 of rated airflow Used to provide dehumidification and improve system efficiency Continuous Fan Operation When thermostat con...

Page 11: ...aintenance Failure to do so could result in death or serious injury If cleaning is necessary shut off oil supply shut off power to the furnace and remove burner Use stiff brush with wire handle brush...

Page 12: ...lled in electrical power supply line to OFF 24 Operating Instructions BMLV Before Lighting 1 Open all supply and return air registers and grilles 2 Open all valves in oil pipes 3 Turn on electric powe...

Page 13: ...g 0 50 usgph F3 3 in BML 80B2 BMLV 80B2 76 000 AF76BNHS 0 65 80 A 100 psig 0 65 usgph F3 3 in BML 90B2 BMLV 90B2 85 000 AF76BNHS 0 75 80 A 100 psig 0 75 usgph F3 3 in 1 Head is shielded by ceramic ins...

Page 14: ...ieve zero smoke A 1 OIL BURNER AIR ADJUSTMENT Consult oil burner instructions provided in furnace documents envelope for specific information concerning burner adjustments operation and troubleshootin...

Page 15: ...h airflow must be increased If temperature rise is too low slow fan down 11 After air adjustments have been completed recheck the over fire draft at test port on burner mounting plate shown in Figure...

Page 16: ...obvious APPENDIX A CHECK OUT AND ADJUSTMENTS FIGURE 3 UNITED TECHNOLOGIES 1158 120 FAN TIMER BOARD BML FIGURE 4 UNITED TECHNOLOGIES 1168 1 ECM TAP BOARD BMLV Where oil shut off valve from oil storage...

Page 17: ...eed CFM External Static Pressure Inches w c 0 20 0 30 0 40 0 50 0 60 BML 60 90 100 10T DD 1 2 HP 7 1 70 F High 1722 1645 1561 1462 1375 Med High 1604 1545 1473 1383 1302 Med Low 1147 1133 1106 1063 10...

Page 18: ...ON ON D 1 5 SW3 ADJUST POS SW4 DELAY POS DIP Switch Position CFM DIP Switch Position INPUT 1 2 1 2 USGPH OFF OFF A 0 OFF OFF A 0 65 ON OFF B 15 ON OFF B 0 85 OFF ON C 15 OFF ON C 0 75 ON ON D N A ON...

Page 19: ...100 10T 3 x 2 T O 7 x 4L380 1 2 HP 3 x 7 x 4L380 1 2 HP 1 5 3 5 1 2 HP 600 1400 BML 90 100 10T 3 x 0 T O 7 x 4L380 1 2 HP 3 x 7 x 4L380 1 2 HP 1 5 3 5 1 2 HP 600 1400 Table A 11 Airflow Characteristi...

Page 20: ...20 P N 30149 Rev G 12 15 2016 APPENDIX B WIRING DIAGRAMS Chimney Vent Furnace Wiring Diagram BML BMLV...

Page 21: ...21 P N 30149 Rev G 12 15 2016 APPENDIX B WIRING DIAGRAMS Direct Vent Furnace Wiring Diagram BML BMLV...

Page 22: ...ts off burner Circulator fan is energized immediately at heat speed EFT opens the oil primary control T T connections Circulating fan runs as long as limit string stays open If there is a call for coo...

Page 23: ...ay burn out heat anticipator of standard 24 vac thermostat or cause harm to components within micro electronic thermostat Before checking oil primary control perform these preliminary checks repair or...

Page 24: ...pair light leak if necessary Open safety switch Check for open limit or auxiliary limit Check internal wiring connections loose connectors etc Furnace will not start without first pushing oil primary...

Page 25: ...l supplier Frozen oil line Gently warm oil line Insulate oil line Outdoor piping size may require increased diameter Oil burner sputtering at nozzle Electrodes out of adjustment or defective Check ele...

Page 26: ...e rise is too high speed up blower fan Defective high limit control Test high limit function of all limit switches Use duct thermometer to verify accuracy of limit control Check for obstructions to ai...

Page 27: ...12 15 2016 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 APPENDIX D HOMEOWNER...

Page 28: ...675 Sight Glass Cover Plate 29850 Sight Glass Gasket 2 per unit 29870 Sight Glass 29876 17 Flue Pipe Collar 27476 18 Air Filter 20 x 20 x 1 Permanent 2180032 19 Control Panel 30010 20 Control Panel Co...

Page 29: ...ng and Wheel 100 10T Belt Drive 30627 Blower Motor 1 2 HP One Speed 102000154 Motor Pulley 3 1 4 x 1 2 2240001 Blower Pulley 7 x 3 4 2240008 Belt 4L380 2240017 Blower Base 2 per unit 109005826 Grommet...

Page 30: ...er Motor 1 7 HP 3450 RPM PSC 28907 Beckett Clean cut Oil Pump A2EA6520 29688 Solid State Ignitor 28558 Oil Primary Combustion Control 7505P1530 Air Tube Combination FBX80HGXS 28561 Flame Retention Hea...

Page 31: ...31 P N 30149 Rev G 12 15 2016 Model BML and BMLV Diagram Direct Drive Model Shown 37...

Page 32: ...P N 30149 Rev G 12 15 2016 ECR International 2210 Dwyer Avenue Utica NY 13501 web site www ecrinternational com...

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