Table of Contents
Advertisement
Quick Links
©2024 Lennox Industries Inc.
Dallas, Texas, USA
THIS MANUAL MUST BE LEFT WITH THE
HOMEOWNER FOR FUTURE REFERENCE
WARNING
Every working procedure that affects safety means shall
only be carried out by competent persons. This appliance
is not to be used by persons (including children) with
reduced physical, sensory or mental capabilities, or
lack of experience and knowledge, unless they have
been given supervision or instruction concerning use of
the appliance by a person responsible for their safety.
Children should be supervised to ensure they do not
play with the appliance.
CAUTION
Leak Detection System installed. Unit must be powered
except for service.
WARNING
Maximum Altitude of application is 3200m above sea
level.
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal
injury or loss of life. Installation and service must be
performed by a licensed professional HVAC installer or
equivalent, service agency, or the gas supplier.
INSTALLATION
INSTRUCTIONS
Elite
Series
®
CBK47UHET Air Handler Units - R454B
MULTI-POSITION AIR HANDLERS
508443-01
6/2024
Table of Contents
General Information .......................................................2
Shipping and Packing List .............................................2
Wiring Diagrams ............................................................3
Adjusting Blower Speed ................................................5
Requirements ................................................................8
Upflow and Downflow Unit Dimensions ......................10
sions ............................................................................ 11
Installing the Unit .........................................................12
Sensor / Bracket Installation .........................................15
Brazing Connections ...................................................17
Installing the Condensate Drain ..................................20
Inspecting and Replacing Filters .................................22
Sealing the Unit ...........................................................22
Making Electrical Connections ....................................23
Homeowner Maintenance ............................................25
Check-out Procedures .................................................25
Sensor Maintenance ....................................................26
Decommissioning ........................................................26
NOTE - This unit is a PARTIAL UNIT AIR CON DITIONER,
complying with PARTIAL UNIT requirements of this Stan-
dard, and must only be connected to other units that have
been confirmed as complying to corre sponding PARTIAL
UNIT requirements of this Standard, UL 60335-2-40/CSA
C22.2 No. 60335-2-40, or UL 1995/CSA C22.2 No 236.
Partial units shall only be connected to an appliance suit-
able for the same refrigerant.
IMPORTANT
The Clean Air Act of 1990 bans the intentional venting of
refrigerant (CFCs, HCFCs and HFCs) as of July 1, 1992.
Approved methods of recovery, recycling or reclaiming
must be followed. Fines and/or incarceration may be
levied for noncompliance.
Servicing shall be performed only as recommended by
the manufacturer.
Ducts connected to an appliance shall not contain a
potential ignition source
Page 1
CAUTION
WARNING
Advertisement
Table of Contents
Related Manuals for Lennox Elite CBK47UHET
Summary of Contents for Lennox Elite CBK47UHET
-
Page 1: Table Of Contents
INSTALLATION INSTRUCTIONS ©2024 Lennox Industries Inc. Dallas, Texas, USA Elite Series ® CBK47UHET Air Handler Units – R454B MULTI-POSITION AIR HANDLERS 508443-01 6/2024 Table of Contents General Information ............2 Shipping and Packing List ..........2 Wiring Diagrams ............3 Adjusting Blower Speed ..........5 Requirements ..............8... -
Page 2: General Information
WARNING WARNING • Do not use means to accelerate the defrosting pro- For duct connected appliances, false ceilings or cess or to clean, other than those recommended by drop ceilings may be used as a return air plenum if a the manufacturer. -
Page 3: Wiring Diagrams
Wiring Diagrams FIGURE 1. Typical System Wiring Diagram – 240V Page 3... - Page 4 FIELD WIRING FOR UNITS FIELD WIRING FOR WITHOUT CIRCUIT BREAKERS UNITS WITH CIRCUIT BREAKERS CIRCUIT 2 CIRCUIT 4 CIRCUIT 3 CIRCUIT 2 EQUIPMENT GROUND EQUIPMENT EQUIPMENT EQUIPMENT GROUND GROUND GROUND CONNECT POWER WIRES FROM HEATER LABELED L1, L2, L3 ON G VOLTAGE UNITS TO TB2 THE NUMBER OF CIRCUITS VARY ACCORDING TERMINAL STRIP IN INDOOR UNIT TO HEATER MODEL.
-
Page 5: Adjusting Blower Speed
IMPORTANT INFORMATION FOR INSTALLER CHECK FOR AND REMOVE THESE ITEMS BEFORE OPERATING UNIT. TOP CAP SHIPPING BRACKET (REPLACE SCREWS IN TOP CAP AFTER REMOVAL) BLOWER HOUSING SUPPORT PAD DRIP SHIELD. (USED FOR -060 UNITS HORIZONTAL APPLICATIONS ONLY.) (SEE PAGES 13-15.) SHOWN INSTALLED ON DRAIN PAN IN -060 UNIT. -
Page 6: Blower Data
BLOWER DATA CBK47UHET-018 BLOWER PERFORMANCE External Air Volume and Motor Watts Static Tap 1 Tap 2 Tap 3 Tap 4 Tap 5 Pressure Watts Watts Watts Watts Watts in. w.g. CBK47UHET-024 BLOWER PERFORMANCE External Air Volume and Motor Watts Static Tap 1 Tap 2 Tap 3... - Page 7 BLOWER DATA CBK47UHET-036 BLOWER PERFORMANCE External Air Volume and Motor Watts at 208V Static Tap 1 Tap 2 Tap 3 Tap 4 Tap 5 Pressure Watts Watts Watts Watts Watts in. w.g. 1239 1301 1301 1447 1194 1264 1264 1411 1156 1229 1229...
-
Page 8: Requirements
CBK47UHET-060 BLOWER PERFORMANCE External Air Volume and Motor Watts Static Tap 1 Tap 2 Tap 3 Tap 4 Tap 5 Pressure Watts Watts Watts Watts Watts in. w.g. 1354 1768 1954 1870 2148 1307 1742 1929 1845 2124 1267 1706 1898 1817 2097... - Page 9 Lennox air handler units (with or without optional elec- Apply sealant on the inside of the cabinet at the tric heat), MUST conform with National Fire Protection As- point where the electrical wires exit through the sociation (NFPA) standards: “Standard for Installation of...
-
Page 10: Upflow And Downflow Unit Dimensions
Upflow and Downflow Unit Dimensions PIPING PLATE DETAIL 3/4 (19) (FOR UP-FLOW AND DOWN-FLOW POSITIONS) 5/8 (16) SUPPLY AIR OPENING 4 3/8 (111) 1 1/8 (29) SUCTION LINE CONDENSATE DRAINS 5/8 (16) 5/8 (16) (2) (HORIZONTAL) 3/4 (19) Return Air Opening (51) LIQUID LINE 11 1/16 (281) -
Page 11: Horizontal Left- And Right-Hand Discharge Unit Dimensions
Horizontal Left- and Right-Hand Discharge Unit Dimensions 5 3/8 FILTER (137) (51) Horizontal Position LIQUID LINE (Right Hand Air SUCTION CONDENSATE Discharge) LINE DRAINS (2) (UP-FLOW Coil BLOWER 1 1/8 DOWN-FLOW) (29) CONDENSATE 4 3/8 DRAINS (2) (111) FOR DIMENSIONS “A” THROUGH (HORIZONTAL) “H”, SEE CHART ON PAGE 2. -
Page 12: Installing The Unit
1. The actual refrigerant charge is in accordance with the Installing the Unit room size within which the refrigerant containing parts are installed. These units are factory-configured for upflow and hori- zontal right-hand discharge installation. For downflow or 2. The ventilation machinery and outlets are operating horizontal left-hand discharge, certain field modifications adequately and are not obstructed. -
Page 13: Upflow Application
14" from the floor to allow for render the appliance safe for flammable refrigerants. proper air return. Lennox offers an optional upflow This process might need to be repeated several times. unit stand as listed in table 1. - Page 14 3 - No further adjustment is necessary. Set unit so that IMPORTANT it is sloped 1/4" towards the drain pan end of the unit. When removing the coil, there is possible danger of equipment damage and personal injury. Be careful when 4 - If the unit is suspended, the entire length of the removing the coil assembly from a unit installed in right- cabinet must be supported.
-
Page 15: Downflow Application
13 - Set unit so that it is sloped 1/4ʺ toward the drain IMPORTANT pan end of the unit. Connect return and supply air plenums as required using sheet metal screws. After removal of drain pan plug(s), check drain hole(s) to verify that drain opening is fully open and free of any 14 - If suspending the unit, it must be supported along the debris. - Page 16 2 - Follow instructions for right-hand discharge as Downflow Configuration outlined in previous section on page 13. 1 - Remove sensor bracket assembly from vertical position. Do not remove sensor from bracket, and 3 - With air handler unit panels removed, install sensor do not disconnect or reroute sensor wire from the bracket assembly to the unit by lining up holes in control panel area.
-
Page 17: Brazing Connections
IMPORTANT The air handler’s coil line sizes are listed in table 2. Use Lennox L15 (sweat) series line sets (refer to the outdoor Refrigerant lines must be clean, dry, refrigerant-grade unit Product Specifications (EHB) for proper size, type copper lines. - Page 18 NOTE – When installing refrigerant lines longer than 50 NOTE – CBK47UHET series air handlers use nitrogen or feet, see the Lennox Refrigerant Piping Design and Fab- dry air as a holding charge. If there is no pressure when rication Guidelines, CORP. 9351-L9, or contact Lennox the rubber plugs are removed, check the coil for leaks Technical Support Product Applications for assistance.
- Page 19 PLEASE READ IMPORTANT ISSUES CONCERNING BRAZING USE A WET RAG TO PROTECT CTXV SENSING BULB WHEN BRAZING SUCTION LINE CONNECTIONS. NOTE — REFER TO OUTDOOR UNIT INSTALLATION INSTRUCTIONS FOR REFRIGERANT PIPING SIZE REQUIREMENTS NOTE - Use silver alloy brazing rods with five or six percent minimum silver alloy for copper-to-copper brazing, 45 percent alloy for copper-to-brass and copper-to-steel brazing.
-
Page 20: Installing The Condensate Drain
BEST PRACTICES Installing the Condensate Drain The following best practices are recommended for the condensate removal process: MAIN DRAIN • Main and overflow drain lines should NOT be smaller Connect the main drain and route downward to drain line or sump. Do not connect drain to a closed waste system. than both drain connections at drain pan. - Page 21 METERS) LENNOX P-TRAP 49P66 REQUIRES A LARGER INSTALLATION SPACE THAN THE J-TRAP 91P90. PIPE NIPPLE PROVIDED IN BAG ASSEMBLY - SCH 80, 3/4” I. D. X 5” - 34K7401 (1): CUT THE PIPE IN HALF AND USE IT TO ROUTE THE MA IN DRAIN.
-
Page 22: Wiring Connections
Select the proper supply circuit conductors in accordance Making Electrical Connections with tables 310-16 and 310-17 in the National Electric Code, ANSI/NFPA No. 70 or tables 1 through 4 in the Ca- WARNING nadian Electric Code, Part I, CSA Standard C22.1. The motor speed is set by the speed tap connection to the Run 24V Class II wiring only through specified low low voltage terminal strip in the control section. -
Page 23: Inspecting And Replacing Filters
Before using any filter with this system, check WARNING the specifications provided by the filter manufacturer against the data given in the appropriate Lennox Product Electrically ground air handler. Connect Specifications bulletin. Additional information is provided ground wire to ground terminal marked in Service and Application Note ACC002 (August 2000).. -
Page 24: Homeowner Maintenance
Make sure the liquid line and suction line entry points are REPAIRING DAMAGED INSULATION sealed with either the provided flexible elastomeric ther- Areas of condensation on the cabinet surface are an indi- mal insulation, or field provided material (e.g. Armaflex, cation that the insulation is in need of repair. -
Page 25: Check-Out Procedures
(less than 50psi). If the • Have all unused parts and packaging been disposed coil cannot be cleaned using water alone, Lennox recommends use of a coil cleaner with a pH in the • Is the filter clean, in place, and of adequate size? range of 5 to 9. -
Page 26: Use Of Air Handler During Construction
Use of Air Handler During Construction Lennox does not recommend the use of its air handler unit during any phase of construction. Very low return air tem- peratures, harmful vapors and operation of the unit with clogged or misplaced filters will damage the unit. -
Page 27: Integrated Control
Installing Contractor’s Name_______________________ Installing Date_______________________________ Installing Contractor’s Phone_______________________ Air Handler Model #___________________________ Job Address____________________________________ Thermostat Line Voltage SUPPLY Disconnect Switch Integrated Control Temperature Duct Blower Motor Amps System Electric Heat Amps Duct Static RETURN Filter Drain Line DUCT SYSTEM TOTAL EXTERNAL STATIC (dry coil) dry coil wet coil SUPPLY AIR DUCT... - Page 28 Installing Contractor’s Name_______________________ Installing Date_______________________________ Installing Contractor’s Phone_______________________ Air Handler Model #___________________________ Job Address____________________________________ Line Voltage Disconnect Switch Thermostat Integrated Control Duct System Duct System Filter RETURN SUPPLY Electric Heat Amps Blower motor Amps Drain Line Duct Static Temperature DUCT SYSTEM TOTAL EXTERNAL STATIC (dry coil) dry coil wet coil...
Need help?
Do you have a question about the Elite CBK47UHET and is the answer not in the manual?
Questions and answers