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,t_2005 Lennox industries
Inc,
Dallas, Texas, USA
INSTALLATION
INSTRUCTIONS
O23V Series Units
OIL
UNITS
_
Technical
505,082M
LL.L[ Publications
10/05
Litho U.S.A.
RETAIN
THESE
INSTRUCTIONS
FOR FUTURE
REFERENCE
A IMPORTANT
O23V SERIES UNITS ARE NOT FOR USE IN
ZONING APPLICATIONS!
These instructions are intended as a general guide and do
not supersede local codes in any way. Only qualified tech-
nicians can install and service the Dave Lennox Signa-
ture'"
Collection O23V oil furnaces. In Canada, refer to
CSA B139 for recommended installation procedures. Con-
sult authorities who have jurisdiction before installation.
General ......................................
1
Shipping & Packing List ........................
1
O23V Unit Dimensions
.........................
2
O23V Unit Parts Arrangement ...................
3
O23V Oil Burner Parts Arrangement ................
3
Requirements
.................................
4
Locate & Level the Unit ........................
4
Unit Adjustments
..............................
5
Venting
......................................
5
Flue Connections ..............................
10
Supply & Return Air Plenums
...................
10
Oil Supply Lines Sizing .........................
10
Oil Supply Line & Filter Connections
.............
12
Leak Check ...................................
12
Electrical
.....................................
12
Blower Control ................................
13
Unit Start-Up & Adjustments
....................
17
Service
......................................
18
Heating Events Actions & Responses
............
18
Troubleshooting
...............................
19
Oil Furnace Start-Up & Check List ...............
24
a WARNING
a WARNING
1 - Assembled oil furnace
1 - Barometric draft control
1 - Side exhaust pipe collar
1 - Direct intake collar (AFII burner units only)
Check the components for shipping damage. If you find
any damage, immediately contact the last carrier.
10/0 5
NIIIIIIII
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Page 1
505,082M
NIII III IIIII IIIII IIIII IIIII IIIII IIIIIII
II I III
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Table of Contents
Related Manuals for Lennox O23V-105
Summary of Contents for Lennox O23V-105
- Page 1 Oil Supply Line & Filter Connections Leak Check ... Electrical Blower Control ... Unit Start-Up & Adjustments Service Heating Events Actions & Responses Troubleshooting Oil Furnace Start-Up & Check List ... a WARNING a WARNING Page 1 Technical LL.L[ Publications Litho U.S.A. 505,082M...
- Page 2 3/4 (19) SIDE FLUE OUTLET CENTERING HOLE_ (Field Fabricate Either 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) 1-1/2 (38)--IP, 1-1/4 (32)--Ip i i i_i_i_i_i_:_i_i_i_i_bi_i_i:_i_!_i!_i_i_i_i_ji_i!_i_i_iii_I_ii_i_i_i_i_i_i_i_i_i_ O23V Model...
- Page 3 CLEAN-OUT PORT LIMIT SWITCH CONTROL BOX WITH FAN CONTROL BOARD BECKETT@ AFIIBURNER CONNECTOR FLANGE GASKET AIR TUBE SCREWS AIR TUBE ASSY FOR FLANGE RETAIN- FB-HEADS ING CLIP SCREW NOZZLE ADAPTER NOZZLE LINE ELECTRODE HEAD ASSY, ELECTRODE ASSY PRE-MOUNTED OIL-DELAY VALVE Figure 2 TUBE ELECTRONIC...
-
Page 4: Requirements
Level the unit from side to side and from front to rear. If the furnace is not level, place fireproof wedges or shims be- tween the low side of the furnace and the floor. Make sure the weight of the furnace is distributed evenly on all four corners. - Page 5 (figure 4), the entire burner assembly will come out of the furnace. There is adequate wire to re- move the burner without disconnecting moved, turn the burner around in the vest panel area.
- Page 6 Make sure the chimney will produce a steady draft sufficient to remove all the products of combustion from the furnace. A draft of at least .04" w.c. (9.9 Pa) is re- quired during burner operation. 1. Local building codes may have more stringent installa-...
- Page 7 When fireplaces, exhaust fans, or clothes dryers 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.
- Page 8 Air from an Adjacent Space If the confined space housing the furnace adjoins space categorized as unconfined, air can be brought in by provid- ing two permanent openings between the two spaces. Each opening must have a minimum free area of 1 square inch (6.4 square centimeters)
-
Page 9: Venting
Space OIL VENT Removal 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... -
Page 10: Flue Connections
NOTE - The following are suggested procedures that should be followed when installing the supply air plenum, 1. Use sealing strips of fiberglass. 2. In all cases, the plenum should be secured to furnace or evaporator cabinet with sheet metal screws. Install a barometric 3. - Page 11 Oil Piping - One-Pipe FILL PIPE AIR VENT _o_1 II TANK I ol II 111S"UT'OFF I "Maximam VALVE _o Oo °°8° °o °o_o Figure To determine the correct tubing size for piping, refer to table 3 Table One-Pipe Oil Sizing Line Length Pipe Diameter (OD Tubing) 0-50' (15 m)
- Page 12 An oil filter is required for all models. Install filter inside the building between the tank shut-off valve and the burn- er. Locate filter close to burner for easy maintenance. Table 5 lists the filters for the O23V furnace. 505082M 10_5...
- Page 13 IMPORTANT 2, Install the room thermostat and make wire connec- tions to the fan control board. Avoid installing thermo- stat on an outside wall or where it can be affected by radiant heat, Set the adjustable heat anticipator on thermostat according to the wiring diagram sticker pro- vided on unit, 3, Install a separate fused disconnect switch near unit so power can be shut off for servicing,...
- Page 14 ADJUST 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 the normal <'NORM"...
- Page 15 Continuous When the thermostat is set for "Continuous Fan" operation and there is no demand for heating or cooling, the blower control will provide 50% of the COOL CFM selected. G - Fan switch ON &_ CALL g - Fan switch NOTE - With the proper thermostat and subbase, continu- ous blower operation is possible by closing the R to G cir- cuit.
- Page 16 THERMOSTAT " LLL: FACTORY *IRINE co&_____.NsiNG LINE VOLTAGE LOW VOLTAGE FIELD WIRING DENOTES OPTIONAL COMPONENTS ANY WIRE THIS APPLIANCE REPLACED, IT MUST BE REPLACED WITH LIKE SIZE,RATINE INSULATION THICKNESS. IF H(_RIZONTAL APPLICATIUN DESI GNAT I ON. THERIdOSTAT HEAT USED,PURPLE WIRE COLOR ANTICIPATOR SETTING--O.
-
Page 17: Supply & Return Air Plenums
0,04 to 0.05. This is VERY critical to the flame retention head burners. Oil furnace installations also require careful inspection to make sure the chimney is in good shape and can ac- commodate the products of combustion, The temper-... -
Page 18: Blower Control
When the burner pump reaches full speed, the solenoid valve is energized. furnace. Oil flows as long as oil primary control senses flame. ing begins. When timing is complete, the circulat- ing fan is at heat speed and warm air is delivered to the controlled space. -
Page 19: Troubleshooting
Check thermostat settings. Check burner motor, Safety Overloads primary safety control, & auxiliary limit switch. Power Check furnace disconnect switch & main disconnect. Thermostat Touch jumper wire across thermostat terminals on primary control. If burner starts, then fault is in the thermostat circuit. - Page 20 Source Procedure Burner Place the trouble light between the black and white leads to the burner motor. No light indicates that no power is getting to the motor. Place trouble light between the black and white leads to the blower motor. Light indicates power to the motor and burner fault.
- Page 21 Causes Heat anticipator set too low Vibration at thermostat Thermostat in the path of a warm air draft Dirty furnace air filters Blower running too slow Blower motor seized or burned out Blower bearings seized Blower wheel dirty Blower wheel in backward...
- Page 22 Source Procedure Power If voltage fluctuates, fault is in the power source. Recheck voltage at the power source. Source Procedure Poor Fire After burner fires, immediately jumper across flame detector terminals at the primary control. • If burner continues to run (does not lock out of safety), fault may be poor fire.
- Page 23 Too little combustion Too little blower Dirty or plugged heat exchanger Dirty blower wheel Dirty furnace air filters Restricted or closed registers/dampers Partially plugged or defective nozzle Oil pressure too low: less than 100 psi. Page 23 Correction Repair or replace the thermostat.
- Page 24 Customer Name Street Address Furnace Model # Serial # New Construction Replacement Installation Data Furnace Location: Basement- Open Enclosed* Utility Room - Open Enclosed* Closet- Open Enclosed* Crawl Space- Open Enclosed* *Provisions must be made for adequate air for combustion. See...
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