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INSTALLATION
INSTRUCTIONS
,t_2005 Lennox industries Inc,
Dallas, Texas, USA
O23V Series Units
OIL UNITS _ Technical
505,082M LL.L[ Publications
10/05 Litho U.S.A.
General ...................................... 1
Shipping & Packing List ........................ 1
O23V Unit Dimensions ......................... 2
O23V Unit Parts Arrangement ................... 3
O23V Oil Burner PartsArrangement ................ 3
Requirements ................................. 4
Locate & Level the Unit .............
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3/4_19) D-------_ c==_ 3/4 (19) CZ222ZD TOP FLUE OUTLET 4 J C SUPPLY O OPENING _ FLUE AIR czz_ CONNECTION (On Heat TOP VIEW Exchanger) _" B ,_----- A -----_ SIDE FLUE OUTLET J \ CENTERING HOLE_ ' I (Field Fabricate Either Side) ELECTRICAL INLET (Right Side Only) T OIL PIPING INLET ,J 54 (Left Side Only)_ (1372) It OPT. OUTDOOR COMBUSTION AIR FLOW ,91_1-1/2 AIR INLET CENTERING HOLE (38) (Field Fabricate Right Side only) RETURN AIR OPENING t (Either Side) 22-.4 1-1/2 (38)--IP, 23-1/2 I 14 (559) I
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HEATEXCHANGER FLUE OPENING CLEAN-OUT PORT LIMIT SWITCH CLEAN-OUT PORT CONTROL BOX WITH FAN CONTROL BOARD OBSERVATION PORT COMBUSTION AIR INTAKE BECKETT@ AFIIBURNER VARIABLE SPEED BLOWER MOTOR CAPACITOR Figure 2 CONNECTOR TUBE ELECTRONIC PRIMARY 4X4 AIR FLANGE GASKET IGNITION REAR ACCESS CONTROL BOX ADJUST AIR TUBE TRANSFORMER DOOR GASKET IGNITOR DIAL SCREWS AIR TUBE REAR ACCESS \ ASSY FOR FLANGE DOOR ASSY RETAIN- FB-HEADS X ING CLIP ESCUTCHEON PLATE SCREW SPLINED NUT MAIN ASSY NOZZLE ADAPTER NOZ
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The combustion air opening should provide a mini- mum free area one-half square inch per 1,000 Btu per hour input. This combustion air should be brought into the area containing the furnace below the level of the A CAUTION furnace burner. Table 2 O23V Installation Clearances Clearances inches (mm) A CAUTION top of plenum & duct 2 (51) plenum sides 3 (76) sides 0 (0) rear 0 (0) front 4 (120) flue pipe 6 (152) With the HEAT selector pin in the position shown in the Installation of Lennox oil-fired
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O23V Series Burner Removal Loosen three nuts which at- Rotate burner counterclockwise on tach burner to vest panel. slots then pull toward you, Neither thenozzle setting northeairadjustments arefac- toryset.Thefurnaceisfiretestedandthelimitcontrolis checked to make sureitfunctions properly; nofactory set- tingsaremade.Duringinstallation, thefurnacemustbe "setup."Theinstalling dealer/contractor musthaveand useproper testequipment inordertocorrectly setupthe oilfurnace. Proper testing equipment is
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Wall Thimble A, WARNING I A WARNING COMBUSTIBLE VENT PIPE WALL Figure 6 9. The vent pipe should slope upward toward the chim- CAUTION ney on horizontal run at least 1/4 inch (6 mm) to the foot (0.3 m) and should be supported by something other than the furnace, such as isolation hangers. See figure 7. Masonry Chimney BAROMETRIC LINER CONTROL* NOTE - Oil burning equipment may be vented into an ap- ( proved masonry chimney or type L vent. (Type L vent is LOCATION) similar in construction to type B
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16.Wherecondensation ofventgasisapparent, thevent Combustion Air Requirements shouldberepaired orreplaced, Accumulation of con- densation in the vent is unacceptable. WARNING 17. Vent 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 and debris, NOTE - If vent pipe needs to exit from side of cabinet CAUTION use the pilot hole (located on either sid
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Air from an Adjacent Space opening shall have a minimum free area of 1 square inch (6.4 square centimeters) per 2,000 Btu (586 W) per total If the confined space housing the furnace adjoins space input rating of all equipment in the enclosure (See figure categorized as unconfined, air can be brought in by provid- 12). ing two permanent openings between the two spaces. Each opening must have a minimum free area of 1 square Equipment In Confined Space - All Air inch (6.4 square centimeters) per 1,
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Equipment in Confined Space CAUTION All Air From Outside OR_ _ OIL VENT Removal of Unit from Common Venting System In the event that an existing furnace is removed from a venting system commonly run with separate appliances, the venting system is likely to be too large to properly vent _ WATER the remaining attached appliances. The following test II II II IIHEATER should be conducted while each appliance is in operation and the other appliances not in operation remain con- IIIIOIL FURNACE nected
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Locate the barometric draft control within 18 inches of the Radiation Shield Installation furnace flue outlet, See figure 13 for barometric draft con- COMBUSTIBLE trol location. MATERIAL "_ Horizontal Venting UNIT t CABINET BAROMETRIC 12" (305 ram) rain CONTROL* I I HORIZONTAL VENT- -- ING CONTROL CC3 NoN _1 l. COMBUST,BLE SPACERS I.,_ A NOTE SEE 2 A *Barometric control must be RADIATION SHIELDS (SEE NOTE 1) installed in the horizontal venting system and located within 18" of flue outlet of furn
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Oil Piping - One-Pipe System Oil Piping -Two-Pipe System AIR VENT FUEL PUMP -- FILL PIPE FILL PIPE "'',_ R / AUX -IIII RETURN m/ .FILTER -- AIR VENT _II I PIPE _ _ INLET _o_1 II TANK I v_l 8ft(2.4m) ol II 111S"UT'OFF I "Maximam --. -- IL VALVE I One Pipe Lift (76ram'102mm) I .... F_iF_E 14 R outside tank fuel pump above bottom of tank. _o Oo °°8° _o °o °o_o °o o_ Figure 16 Figure 15 To determine the correct tubing size for piping, refer to table 3 IMPORTANT Table 3 One-Pipe Oil Sizing Line Lengt
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Table 5 Installation Clearances inches (mm) One-Pipe Systems Oil Filters Cat. No. 10 micronfilter (no mounting bracket) 81 P89 CAUTION 10 micron replacement cartridge for filter, 45 gph 53P93 Filter restriction indicator gauge 53P90 The burner is shipped with fuel pump set for one-pipe op- Consult burner manufacturer's instructions packaged with eration. For one-pipe systems, the oil supply pipe is con- unit for further details concerning oil supply pipe connec- nected to the inlet tap on the pu
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O23V units equipped with a variable speed motor are ca- IMPORTANT pable of maintaining a specified CFM throughout the exter- nal static range. A particular CFM can be obtained by posi- tioning COOL jumpers on the blower control board. The COOL jumper selections are labeled A, B, C and D; each letter corresponds with an air volume (CFM) setting. The ADJUST jumper is labeled Test, -, +, and Norm. The + and 2, Install the room thermostat and make wire connec- - pin settings are used to add or subtr
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ADJUST Y1 7N/2 YI/Y2 y2/Y1 yl The ADJUST pins allow the motor to run at normal speed, approximately 15% higher than normal speed, or 15% low- er than normal speed. Table 6 gives three rows--NORM, (+), and (-) with their respective CFM volumes. Notice that y57°/° minutes 1_i_-i°60 \y° 100°/° (_t_ I7_o 60 the normal <'NORM" adjustment setting for cool speed i sec \ i position C in table 6 is 800 CFM The "(+)" adjustment set- CALL yl OFF OFF ting for that position is 920 CFM (115% of 800 CFM) and Y
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Continuous Fan HUM terminal which provides for connection of a humidis- tat. The JW1 jumper on the blower control board must be When the thermostat is set for "Continuous Fan" operation cut to activate the HUM terminal. The humidistat must be and there is no demand for heating or cooling, the blower wired to open on humidity rise. When the dehumidification control will provide 50% of the COOL CFM selected. circuit is used, the variable speed motor will reduce the se- lected air flow rate by 18%
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023V Wiring Diagram TI TRANGFORMER THERMOSTAT $2, _ ? " I _ ' L J LLL: - FACTORY *IRINE co&_____.NsiNG LINE VOLTAGE - -- - LOW VOLTAGE FIELD WIRING DENOTES OPTIONAL COMPONENTS 1F ANY WIRE IN THIS APPLIANCE IS REPLACED, /X IT MUST BE REPLACED WITH LIKE SIZE,RATINE AND INSULATION THICKNESS. REATINO SPEED SELECTOR IF H(_RIZONTAL APPLICATIUN DESI GNAT ION. 023V-03/4- IZO A /3_ THERIdOSTAT HEAT JUMPER -- IS USED,PURPLE IS WIRE COLOR _ 025V-02/3-090 ANTICIPATOR SETTING--O. lAMP /J_ THE JWl J_ER MUST B
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Table 7 Nozzle Size, Input Output Temp Before starting unit,makesuretheoiltankisadequately O23V Spray Angle, Pump Rating Rating Rise Unit & Pattern PSIG BTU/Hr BTU/Hr Head F° filledwithcleanNo,1orNo,2furnace oil, -70 .50GPH-80 ° A 100 70,000 57,000 FB0 60-70 NOTE - Water, rust or other contaminants in oil supply sys- -90 .65GPH-80 ° B 100 90,000 72,000 FB0 60-70 tem will cause malfunction and failure of the internal parts of the fuel pump. -105 .65GPH-80 ° B 140 105,000 84,000 FB3 65-75 -120 .75
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causing the unit to start sooting/smoking, Things 4, Remove the locking screw and cap from the observa- tion tube and with the spiral wire brush, reach upward which might affect combustion include a nozzle going toward the rear of the heat exchanger to clean out the bad, draft that changes during different climatic condi- crossover tube, tions, dirty oil, dirt obstructing the air inlet, etc. To build in a "window of operation," set up the burner to CAUTION be 2% less in CO2, For example, if you
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6, Action: Limit Switch Closes 4, Action: Established flame fails Response: Response: If there is a heat demand, A15 control • Burner motor is de-energized and oil primary con- board energizes oil primary control, initiating burner trol goes into recycle mode, light off. • If the fan off delay is longer than the recycle timing, the heat fan continues to run through the next trial for ignition. 5. Action: Limit Switch Opens Burner failure or improper operation can result from a num- Response: ber
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Source Procedure Causes Correction Burner Place the trouble light Blown fuse Replacethe fuse. between the black and white leads to the burner motor. No light indicates that no power is getting to the motor. Binding burner blower Place trouble light between Turn off power and rotate the blower wheel by hand. wheel the black and white leads to If seized, free the wheel or replace the fuel pump. the blower motor. Light Sized fuel pump indicates power to the motor and burner fault. Defective burner
