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Lennox SIGNATURE SLO185UFV Series, Installation Instructions Manual

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Lennox SIGNATURE SLO185UFV Series Installation Instructions Manual Download Page 3

Page 3

SLO185UFV Unit Parts Arrangement

CLEAN-

OUT PORT

CLEAN-

OUT PORT

BECKETT

NX BURNER

VARIABLE

SPEED BLOWER

MOTOR

OBSERVATION

PORT

HEAT

EXCHANGER

FLUE

COLLAR

LIMIT SWITCH

INDOOR BLOWER

CAPACITOR

BLOWER CONTROL

Figure 2

SLO185UFV NX Burner Parts Arrangement

Blower Motor

Blower Wheel
With Air Guide
(inside housing)

Burner Control

Fuel Pump

Ignitor

Heat Shield

Air Tube

Inlet Air Box

Figure 3

Summary of Contents for SIGNATURE SLO185UFV Series

Page 1: ...ng List 1 SLO185UFV Unit Dimensions 2 SLO185UFV Unit Parts Arrangement 3 SLO185UFV Oil Burner Parts Arrangement 3 Requirements 4 Combustion Ventilation Air 5 Locate Level the Unit 6 Adjustments 7 Vent...

Page 2: ...her Side ELECTRICAL INLET Right Side Only OIL PIPING INLET Left Side Only OPT OUTDOOR COMBUSTION AIR INLET CENTERING HOLE Field Fabricate Right Side only RETURN AIR OPENING Either Side 3 4 19 A B C D...

Page 3: ...SPEED BLOWER MOTOR OBSERVATION PORT HEAT EXCHANGER FLUE COLLAR LIMIT SWITCH INDOOR BLOWER CAPACITOR BLOWER CONTROL Figure 2 SLO185UFV NX Burner Parts Arrangement Blower Motor Blower Wheel With Air Gu...

Page 4: ...gs required SLO185UFV 79 105 10 X 20 254 mm X 508 mm SLO185UFV 124 141 11 X 22 279 mm X 559 mm This unit is approved for use on combustible flooring and for clearances to combustible material as liste...

Page 5: ...ed at the same time as the furnace much more air is required to ensure proper combustion and to prevent a down draft situation Insufficient amounts of air also cause incomplete combustion which can re...

Page 6: ...tional area as the free area of the openings to which they connect The minimum dimension of rectangular air ducts shall be no less than 3 76 mm In calculating free area the blocking effect of louvers...

Page 7: ...le assembly must be checked for proper depth and alignment You must remove the entire burner assembly not just the nozzle from the furnace to check the nozzle depth and alignment The smaller sized fir...

Page 8: ...make a thorough inspection of the chimney to determine whether repairs are necessary Make sure the chimney is properly constructed and sized ac cording to the requirements of the National Fire Protec...

Page 9: ...nt connectors serving this appliance shall not be connected into any portion of mechanical draft sys tems operating under positive pressure 18 Keep the area around the vent terminal free of snow ice a...

Page 10: ...aft control Alternate Side Flue Connections The vent pipe may exit the top or sides of the cabinet A hole is provided in the top cap for top exit For side exit lo cate the center hole punched in the s...

Page 11: ...returning it to the tank To determine the run and lift for piping refer to table 5 Use continuous lengths of heavy wall copper tubing or steel pipe for oil supply pipe Install oil supply pipe under f...

Page 12: ...he building between the tank shut off valve and the burn er Locate filter close to burner for easy maintenance Table 6 lists the filters for the SLO185UFV furnace Table 6 Oil Filters Cat No 10 micron...

Page 13: ...this product may result in a fire causing property dam age severe injury or death Use copper wire only with this product CAUTION Failure to use properly sized wiring and circuit breaker may result in...

Page 14: ...Page 14 Figure 17 Field Wiring Diagrams 1 Heat 1 Cool 1 Heat 2 Cool 1 Heat 1 Cool With Thermostat Dehumidification Mode 1 Heat 2 Cool With Thermostat Dehumidification Mode...

Page 15: ...iagrams Continued Dual Fuel Single Stage Heat Pump With Dual Fuel Control Mode Dual Fuel Two Stage Heat Pump With Dual Fuel Control Mode Dual Fuel Two Stage Heat Pump With Dual Fuel Control Mode and T...

Page 16: ...of each cooling demand to allow for greater humidity removal and to conserve energy If after 7 1 2 minutes the Y demand is not met 100 CFM is supplied until the demand is satisfied OFF CALL 100 82 Y...

Page 17: ...flash 10 times At times the light may appear to flicker or glow This takes place when the control is communicating with the motor between cycles This is normal operation After the CFM for each applica...

Page 18: ...External Static Pressure Range ADJUST Jumper Setting Jumper Speed Positions HEAT Speed COOL Speed 85 High Fire 75 Low Fire A C A B C D cfm cfm cfm cfm cfm cfm N A N A 2000 2000 1800 NORM 1850 1550 20...

Page 19: ...of bubbles Then terminate the call for heat The burner control will resume normal operation Fuel Pump Pressure Adjustment Measure fuel pump pressure with unit off Attach pressure gauge to pump outlet...

Page 20: ...er obtain and record the flue gas temperature at the service hole 11 Use the CO2 reading and the flue gas temperature reading to determine unit efficiency 12 When proper combustion and smoke readings...

Page 21: ...tube CAUTION Do not attempt to clean the combustion chamber It can be easily damaged 5 Replace the three clean out caps and flue access el bow Make sure locking screws are secure 6 Brush out and vacu...

Page 22: ...nal is de energized Response D After the thermostat is satisfied the thermostat circuit opens The oil delay valve and burner are de energized D Burner is de energized D Heat fan off ramp timing begins...

Page 23: ...speed ramps down Circulating fan shuts off after 60 seconds Thermostat begins call for fan G terminal is energized Indoor blower is energized immediately at 50 of cool speed ST9103A may be factory co...

Page 24: ...ect the flame detector wires at the primary control If the burner starts fault is in the detector circuit Flame detector leads are shorted Separate leads Flame detector exposed to light Seal off false...

Page 25: ...must be removed from unit Inspect the nozzle for plugged orifice or carbon build up around orifice Nozzle orifice plugged Replace nozzle with the same size spray angle and spray pattern Nozzle straine...

Page 26: ...ter burner fires immedi ately jumper across flame detector termi nals at the pri mary control If burner con tinues to run does not lock out of safety fault may be due to poor fire Inspect fire Unbalan...

Page 27: ...wheel dirty Clean blower wheel Wrong motor rotation Replace motor Restrictions in return or supply air system Correct cause of restriction Power If voltage fluctuates fault is in the power source Rech...

Page 28: ...ed heat exchanger Clean heat exchanger Readjust burner Insufficient overfire draft Increase draft Incorrect nozzle assembly depth Set to 1 13 Too little combustion air Increase combustion air High sta...

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