Lennox ELO183UF Series Installation Instructions Manual Download Page 13 | Manualshive

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Page 13

4 − Complete line voltage wiring from disconnect switch

near unit to make-up box.

NOTE − An equipment ground screw is provided. Refer
to unit wiring diagram. Ground unit using a suitable
ground wire.

5 − Any 120V accessory rated up to 1 amp can be con-

nected to the EAC terminal on the A15 ST9103A con-
trol. The EAC terminal is energized when the blower is
in operation.

WARNING

Run 24V Class II wiring only through specified low
voltage opening. Run line voltage wiring only
through specified high voltage opening. Do not com-
bine voltage in one opening.

CAUTION

Use copper conductors only.

IMPORTANT

If using a programmable thermostat, be sure to use
a type of thermostat that retains its memory in event
of a power loss.

Figure 14

Typical ELO183UF Wiring Diagram

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Summary of Contents for ELO183UF Series

Page 1: ...king 1 ELO183UF Unit Dimensions 2 ELO183UF Start Up Performance Check List 2 ELO183UF Unit Parts Arrangement 3 ELO183UF Oil Burner Parts Arrangement 3 Requirements 4 Combustion Air 5 Locate Level the Unit 6 Adjustments 7 Indoor Coil Placement 8 Venting 8 Flue Connections 9 Supply Return Air Plenums 10 Oil Supply Line Sizing 10 Oil Supply Line Filter Connections 12 Leak Check 12 Electrical Wiring 1...

Page 2: ...9 1 2 30 5 8 18 19 5 8 16 mm 495 778 457 498 406 ELO183UF135 150P60 in 22 1 2 33 1 8 21 22 1 8 18 mm 572 841 533 562 457 ELO183UF Start Up Performance Check List Filter Clean Secure Supply Voltage Electrical Connections Tight Job Name Job Location Installer Unit Model No Oil Pump Pressure recommended minimum 140 psi Job No City City Serial No Date State Serviceman Draft Reading recommended 03 04 i...

Page 3: ...Clean out Port Flue Opening Heat Exchanger ELO183UF AFG Oil Burner Parts Arrangement ESCUTCHEON PLATE MAIN HOUSING HEAT SHIELD BURNER CONTROL with Reset Button OIL DELAY VALVE AIR TUBE WITH ELECTRODE ASSEMBLY AND NOZZLE INSIDE BLOWER WHEEL WITH AIR GUIDE Inside housing COPPER OIL TUBE BLOWER MOTOR IGNITER AIR BAND AND AIR SHUTTER Figure 2 FUEL PUMP ...

Page 4: ...combustion air opening should provide a minimum free area one half square inch per 1 000 Btu per hour input This combustion air should be brought into the area con taining the furnace below the level of the furnace burner IMPORTANT An opening to the outside for combustion air is strongly recommended especially in new homes Refer to table 2 or the unit rating plate for specific combustion air openi...

Page 5: ...pliances such as exhaust fans which force air out of the home When fireplaces exhaust fans or clothes dry ers are used 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 result in sooting Requirements for providing air for combustion and ventila tion depen...

Page 6: ...e same cross sec 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 grilles or screens must be considered If the design and free area of protective cover ing is not known for calculating the size opening required it may be assumed that wood louvers wi...

Page 7: ... 150 units Inspect the spark transformer leads also to en sure they are still attached to the electrodes The burner assembly is attached to the vestibule panel by three nuts Slots are provided in the mounting flange for re moving the burner assembly from the vestibule Loosen the nuts and turn the whole burner assembly clockwise figure 6 to remove the entire burner assembly from the furnace There i...

Page 8: ...s and should be consulted before installation of unit 2 The vent connector should be as short as possible to do the job 3 The vent connector should not be smaller than the out let diameter of the vent outlet of the furnace 4 Pipe should be at least 24 gauge galvanized 5 Single wall vent pipe should not run outside or through any unconditioned space 6 Chimney should extend 3 feet 0 9 m above highes...

Page 9: ...o be too large to properly vent the remaining attached appliances The following test should be conducted while each appliance is in operation and the other appliances not in operation remain con nected to the common venting system If venting system has been installed improperly the system must be cor rected as outlined in the previous section 1 Seal any unused openings in the common venting system...

Page 10: ...positioned no more than 18 beyond the furnace flue outlet Follow the instruc tions packed with the barometric draft 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 side of the cabinet See unit dimensions on page 2 Using it as the center point cut a 6 in...

Page 11: ...eavy wall copper tubing or steel pipe for oil supply pipe Install oil supply pipe under floor or near walls to protect it from damage Avoid running pipes along joists or reverberating surfaces Always use flare fittings All fittings must be accessible Do not use compression fittings IMPORTANT Both oil supply and return pipes must be submerged in oil in the supply tank Table 4 Two Pipe Maximum Pipe ...

Page 12: ...OTE If a faster bleed is necessary open the bleed valve 4 The return pipe must terminate 3 to 4 above the sup ply pipe inlet See figure 13 NOTE If the return pipe does not terminate where it should air may enter the system and prime may be lost An oil filter is required for all models Install filter inside the building between the tank shut off valve and the burner Locate filter close to burner fo...

Page 13: ...on the A15 ST9103A con trol The EAC terminal is energized when the blower is in operation WARNING Run 24V Class II wiring only through specified low voltage opening Run line voltage wiring only through specified high voltage opening Do not com bine voltage in one opening CAUTION Use copper conductors only IMPORTANT If using a programmable thermostat be sure to use a type of thermostat that retains...

Page 14: ...gure 2 for burner parts arrangement CAUTION Do not push the reset button on the primary control more than one time 6 Repeat steps 4 and 5 if necessary until pump is fully primed and oil is free of bubbles Then terminate the call for heat The burner control will resume normal op eration Fuel Pump Pressure Adjustment Measure fuel pump pressure with unit off Attach pressure gauge to pump outlet Turn ...

Page 15: ... inspection to make sure the chimney is in good shape and can ac commodate the products of combustion The tempera ture in the unconditioned space will also affect the draft if long vent connectors are allowed to get too cold 2 Overfire Draft This test should be taken with the burner in operation Remove the plug from the center of the inspection port Insert your draft gauge into the hole A reading ...

Page 16: ... with like kind and size filters Reusable Type Filters Filters should be checked month ly and cleaned when necessary to assure proper furnace operation Use warm water and a mild detergent Replace filter when dry Permanent filters supplied with ELO183UF furnaces do not require oiling after cleaning Examine filter label for any for special instructions that may apply B Blower Blower motor is prelubr...

Page 17: ...ess 1 second Button Hold press 15 seconds t u o k c o L t f o S m o r f t e s e R t u o k c o L Reset from Restricted Hard Lockout Valve on Delay Trial for Ignition Ignition Carryover Go to pump prime see Priming the Pump above Disable the Burner Any time the burner is running press and hold the reset button to disable the burner The burner will remain off as long as the button is held Enables pum...

Page 18: ...out D After soft lockout reset oil primary control allows second ignition attempt Primary control enters hard lockout after second ignition failure 15 sec onds without flame being sensed Push reset but ton on primary control for 15 seconds until light on control turns yellow to reset hard lockout D Burner motor is de energized 4 Action Established flame fails Response D Burner motor is de energize...

Page 19: ...hermostat begins call for cool G and Y terminals are energized Circulating fan is energized at the cool speed Cooling compressor turns on immediately Thermostat ends call for cool G and Y terminals are de energized Circulating fan and cooling compressor turn off immediately Thermostat begins call for fan G terminal is energized Circulating fan is energized immediately at cool speed Thermostat ends...

Page 20: ...onnect 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 source of light short circuit in the flame detec tor Replace detector Primary Control Place trouble light between the orange and white leads No light indicates that no power is going to the contro...

Page 21: ... 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 strainer plugged Poor or off center spray Ignition Electrodes Remove gun assembly and in spect electrodes Fouled or shorted electrodes Clean or replace electrodes Dirty electrodes Eroded electrode tips Clean electrode tips...

Page 22: ...fter 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 Unbalanced fire Replace nozzle Too much air lean short fire Reduce combustion air check combustion Too little air long dirty fire Increase combustion air check combustion Excessive draft Adjust barometric d...

Page 23: ... 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 Recheck voltage at the power source Loose wiring connection Locate and secure connection Low or fluctuating line voltage Call power company Troubleshooting Burner runs continuously too much heat Source P...

Page 24: ...ged 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 stack tem perature is more than 550_F Net Low volume indoor blower air Check pump coupling for wear slippage Dirty heat exchanger Clean heat exchanger Dirty burner blower wheel Clean burner blower wheel...

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