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E 2006 Lennox Industries Inc.
Dallas, Texas, USA
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
Table of Contents
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*2P0108*
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INSTALLATION
INSTRUCTIONS
15CHAX SERIES UNITS
PACKAGED ELECTRIC UNIT (2−5 TONS)
505,201M (38152A082)
01/08
Supersedes 05/06
Shipping & Packing List
1 − Assembled packaged electric unit
As soon as the unit is received, it should be inspected for
possible damage during transit. If you find any damage, im-
mediately contact the last carrier.
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, person-
al injury or loss of life. Installation and service must
be performed by a licensed professional installer (or
equivalent) or service agency.
If this unit is to be installed in a mobile or manufac-
tured home application, the duct system must be
sized to achieve static pressures within the
manufacturer's guidelines. All other installation
guidelines must also be followed. Failure to do so
may result in equipment damage, personal injury
and improper unit performance.
1
2
3
3
3
Danger of sharp metallic edges. Can cause injury.
4
Take care when servicing unit to avoid accidental
4
contact with sharp edges.
4
5
5
6
6
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Electric shock hazard. Can cause injury
6
or death. Before attempting to perform
9
any service or maintenance, turn the
11
electrical
13
disconnect switch(es). Unit may have
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multiple power supplies.
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Page 1
WARNING
WARNING
CAUTION
WARNING
power
to
unit
505,201M
*P505201M*
Litho U.S.A.
OFF
at
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Related Manuals for Lennox 15CHAX−24
Summary of Contents for Lennox 15CHAX−24
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Page 1: Table Of Contents
INSTALLATION INSTRUCTIONS E 2006 Lennox Industries Inc. Dallas, Texas, USA 15CHAX SERIES UNITS PACKAGED ELECTRIC UNIT (2−5 TONS) 505,201M (38152A082) 01/08 Litho U.S.A. Supersedes 05/06 Shipping & Packing List 1 − Assembled packaged electric unit As soon as the unit is received, it should be inspected for possible damage during transit. -
Page 2: Unit Dimensions
15CHAX Unit Dimensions − inches (mm) 2−1/2 (64) 2−1/2 (64) Center Of Corner Weights Gravity DOWN−FLOW Model Model 2−3/4 SUPPLY AIR Number Number (70) OPENING lbs. lbs. lbs. lbs. 15CHAX−24 DOWNFLOW RETURN AIR 15CHAX−30 OPENING 15CHAX−36 15XHAX−42 15CHAX−48 33.5 15CHAX−60 33.5 TOP VIEW HORIZONTAL... -
Page 3: Parts Arrangement
Parts Arrangement A pre−filter must be installed at the entry to the return air General duct. These installation instructions are intended as a general The return air duct must be provided and sealed to the guide only, for use by an experienced, licensed contractor unit. -
Page 4: Location Selection
To reduce exposure to this substance or for further information, consult material safety data sheets available from address shown below, or contact your supervisor. Lennox Industries Inc. P.O. Box 799900 Dallas, TX 75379−9900 Figure 1 Location Selection... -
Page 5: Existing Common Vent Systems
ate Category 1 Natural Gas and Propane appliances Existing Common Vent Systems venting sizing tables in the current standards of the The 15CHAX packaged cooling units with auxiliary electric CSA B149 Natural Gas and Propane Installation heat may replace an existing furnace which is being re- Codes in Canada.) moved from a venting system commonly run with separate gas appliances. -
Page 6: Filters
Filters Removing Supply and Return Air Opening Covers Filters are not factory−supplied with the unit; however, optional internally installed filter kits are available. Filter kit 92M54 is used with 2, 2−1/2 and 3−ton units. Filter kit 92M55 is used with 3−1/2, 4 and 5−ton units. The filter kits accommodate the use of 1", 2"... - Page 7 Unit must be electrically grounded in accordance with local the installation instructions packaged with the electric heat codes or in the absence of local codes with the National section. Electric Code, ANSI/NFPA No. 70 (latest edition) or CSA Thermostat C22.2 Part 1 (latest edition). The room thermostat should be located on an inside wall Power supply to the unit must comply with all applicable where it will not be subject to drafts, sun exposure or heat...
- Page 8 Figure 7 Page 8...
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Page 9: Blower Control Board
Read through the jumper settings section before adjusting Blower Control Board (A54) the jumper to obtain the appropriate blower speed. To change jumper positions, gently pull the jumper off the pins and place it on the desired set of pins. The following WARNING section outlines the different jumper selections available Electric shock hazard. - Page 10 COOL CONTINUOUS FAN The COOL jumper is used to determine the CFM during When the thermostat is set for Continuous Fan" operation cooling operation. This jumper selection is activated for and there is no demand for heating or cooling, the blower cooling when Y1 is energized.
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Page 11: System Operation Monitor
LSOM LED Functions System Operation Monitor (LSOM) Power LED (green) −− Voltage within the range of The system operation monitor (A132) detects the most 19−28VAC is present at the system monitor power connec- common fault conditions in the air conditioning system. tion. - Page 12 Table 5 System Operation Monitor LED Troubleshooting Codes Status LED Condition Status LED Description Status LED Troubleshooting Information Green Power" LED ON Module has power 24VAC control power is present at the module terminal. Determine/verify that both R and C module terminals are connected Green Power"...
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Page 13: Unit Start−Up And Operation
immediately stop. The circulating air blower continues Unit Start−Up and Operation operating through a 90−second delay. Each 15CHAX packaged cooling unit is factory−charged Unit compressors have internal protection. If there is an with R−410A refrigerant. The compressor is hermetically abnormal rise in the compressor temperature, the sealed, internally sprung and base−mounted with protector will open and the compressor will stop. -
Page 14: Condenser Fan Clearances
DO NOT replace per- Do not permit the hot condenser air discharge to be ob- manent type with disposable. structed by overhanging structures or shrubs. Accessories LENNOX Cat. Description Number Filter Kit (2−ton to 3−ton capacity units) 92M54 Filter Kit (3−1/2−ton to 5−ton capacity units)