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Installation, Operation and
Maintenance Manual
Oil Fired Warm Air Furnaces
WML-C AND MPL-B
(Down-Flow or Horizontal Model)
ALL INSTALLATIONS MUST MEET ALL
LOCAL, PROVINCIAL/STATE, AND
FEDERAL CODES WHICH MAY
DIFFER FROM THIS MANUAL
ECR International Limited
OLSEN Division
Read this complete manual before
beginning installation. These
instructions must be kept with the
furnace for future reference.
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TABLE OF CONTENTS INTRODUCTION..........................................................................................................................................................................3 HEAT LOSS.................................................................................................................................................................................3 LOCATION OF UNIT ........................................................................................
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enable proper sizing of the trunk and branch ductwork. In retrofit applications, a building shell (overall) heat loss IMPROPER INSTALLATION MAY DO NOT USE GASOLINE, calculation may be used. CREATE A CONDITION WHERE THE CRANKCASE OIL, OR ANY OTHER In the United States, Manual J. titled, OPERATION OF THE PRODUCT OIL CONTAINING GASOLINE AS A "Load Calculation" published by the Air COULD CAUSE PERSONAL INJURY FUEL FOR THIS FURNACE. Conditioning Contractors of America, OR PROPERTY DAMAG
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HORIZONTAL INSTALLATION Table 1: Clearance to Combustibles WML-C AND MPL-B furnaces models WML-C MPL-B Furnace are assembled and shipped ready for installation in the down-flow position. The Location Down flow Horizontal Down flow Horizontal furnace may be installed in either of the Top 0 in. 3 in. 0 in. 3 in. horizontal positions; warm air discharging left or warm air-discharging Bottom 1 in. 1 in. 1 in. 1 in. right by following these steps: S/A Plenum 1 in. 1 in. 1 in. 1 in. 1.
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through a refrigeration unit unless the If the chimney serves the WML-C unit is specifically approved for such furnace only, the vent should be sized at service. 5-inch minimum. The MPL-B should be THE FURNACE MUST BE 6-inch minimum. The data provided in Generally, a six-inch clearance between CONNECTED TO A FLUE HAVING Table 3 is based on dedicated venting. If the air conditioning evaporator coil and SUFFICIENT DRAFT AT ALL TIMES TO the furnace is to be co-vented with other the he
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Fig. 2: Common Chimney Problems Can be found Obstruction in by light and Use weight to chimney D mirror reflecting break and conditions in dislodge. chimney. Must be Lowering a light handled by Joist protruding E on an extension competent into chimney. cord. masonry contractor. Smoke test - build smudge Must be fire blocking off handled by Break in F other opening, competent chimney lining. watching for masonry smoke to contractor. escape. Clean out with Collection
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In general, the oil tank must be properly Table 4: Oil Lines OPTIONAL SIDE WALL VENTING supported and remain stable in both Certain WML-C AND MPL-B furnace Copper Tubing Oil Line Length (Feet) empty and full condition. The oil tank models are manufactured to be installed must be fitted with vent and supply pipes Single-Pipe OD Two-Pipe OD Lift as sidewall vented units. Please refer to to the outdoors. Refer to the above- (Feet) 3/8” 1/2” 3/8” 1/2” Direct Venting Instructions, P/N
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main electrical panel; however, 2. Connect an ammeter between the If the limit control opens with the United accessory equipment such as electronic wire and the thermostat terminal to Technologies 1158-120 electronic fan control, the circulating fan will be air cleaners and humidifiers may be which it was attached. included on the furnace circuit. Although energized as well. When the limit closes, 3. Note the amperage reading when a suitably located circuit breaker can be the control initi
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trunk ducts. These systems may require into contact with the furnace heat box, tape off both ends of the unused modification to provide some resistance exchanger. Do not use direct drive motor wire. to the airflow to prevent over-amping of connections as a source of power for the direct drive blower motor. Selecting a 120 VAC humidifiers and humidifier lower blower speed may correct this transformers. problem. DISCONNECT THE POWER SUPPLY OIL BURNER Direct drive blower speeds are adju
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BURNER ELECTRODES PROCEDURE: excess air, or contaminated fuel. Do not ignore this indicator. Correct positioning of the electrode tips Start the burner and allow it to run at STACK TEMPERATURE: with respect to each other, to the fuel oil least ten minutes. Set the air shutter to nozzle, and to the rest of the burners is give a good flame visually. The Stack temperature will vary depending essential for smooth light ups and proper combustion air supply to the burner is on fuel input, circ
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used in conjunction with multi-meters anywhere within the heating system B: Annual Service By Contractor with temperature measurement which may cause some concern or capabilities. annoyance to the home owner, etc. The return air should be measured at a F) Be sure that the homeowner is THE COMBUSTION CHAMBER point where the thermometer will be well familiar with the furnace. The (FIREPOT) IS FRAGILE. USE CARE within the air stream near the furnace homeowner should be aware of the WHEN
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should be checked to ensure that all fan furnace and set the thermostat above speeds are operating properly. room temperature. After three or four minutes of burner operation, the limit OPERATING INSTRUCTIONS control should turn the burner off. When the limit function test is complete, shut Before Lighting off electrical power to the furnace, Open all supply and return air registers replace the neutral wire to the blower fan and grilles. motor, and then restore power. The blower fan
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APPENDIX A- WML-C AND MPL-B BURNER SET UP WML-C AND MPL-B 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. Table A-1 Beckett AF Oil Burner Set-Up Beckett AF Series Oil Burners (For use with chimney vented units only) Furnace
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Table A-4 Riello Balanced Flue (BF) Burner Set-Up Riello Balanced Flue Series Oil Burners (For use with sidewall vented units using outdoor combustion air) Furnace Output Burner Pump Turbulator Nozzle Flow Rate Model BTU/Hr Model Pressure Setting WML-60CRB 59,500 40BF3 0.50 / 60°W 105 PSIG 0.51 USGPH 1.0 WML-80CRB 75,000 40BF3 0.60 / 60°W 115 PSIG 0.65 USGPH 1.5 WML-90CRB 85,600 40BF3 0.65 / 60°W 135 PSIG 0.75 USGPH 2.0 NOTE: Air gate setting may vary for sidewall vented units where air
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Table A-6 Direct Drive Blower Set-Up Blower Set-Up Cooling Capacity Furnace Blower 0.20 in. w.c. 0.50 in. w.c. Model Tons Power CFM Range Speed Motor Speed Motor WML-60C GT10 DD Low ½ HP Med-Low ½ HP 3 ½ HP 763 – 1505 WML-80C GT10 DD Med-Low ½ HP Med-High ½ HP 3 ½ HP 763 – 1505 WML-90C GT10 DD Med-High ½ HP High ½ HP 3 ½ HP 763 – 1505 3 MPL-90B GT12-10DD Low ¾ HP Med-High ¾ HP ¾ HP 1185 – 1553 3 MPL-100B GT12-10DD Med-High ¾ HP High ¾ HP ¾ HP 1185 – 1553 3 MPL-120B GT12-10DD Hig
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Table A-9 General Dimensions (Inches) Cabinet Plenum Openings Filter Flue Furnace Shipping Diameter Return Width Depth Height Supply Model Weight Type Size H A B C D x E Side Bottom WML-C 22 22-1/8 55-1/4 19 x 19 18 x 18 18 x 18 5 Permanent 20 x 20 x 1 265 20-1/2 x 20- MPL-B 22-1/4 22-1/4 62 18 x 18 18 x 18 6 Permanent 20 x 20 x 1 292 1/2 WML-C & MPL-B Down flow WML-C & MPL-B Horizontal 30318 R4 9/9/2005 16
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APPENDIX B: WIRING DIAGRAMS Beckett AF Burner Wiring Diagram 30318 R4 9/9/2005 17
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Beckett AFII Burner Wiring Diagram 30318 R4 9/9/2005 18
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Riello 40F3 and F5 Burner Wiring Diagram 30318 R4 9/9/2005 19
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Riello 40BF3 Burner Wiring Diagram 30318 R4 9/9/2005 20
