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E2011 Lennox Industries Inc.
Dallas, Texas, USA
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
These instructions are intended as a general guide and do
not supersede local codes in any way. Consult authorities
having jurisdiction before installation.
WARNING
Improper installation, adjustment, alteration, service or
maintenance can cause personal injury, loss of life, or
damage to property.
Installation and service must be performed by a licensed
professional installer (or equivalent) or a service agency.
IMPORTANT
The Clean Air Act of 1990 bans the intentional venting of
refrigerant (CFCs, HFCs, and HCFCs) as of July 1,
1992. Approved methods of recovery, recycling or
reclaiming must be followed. Fines and/or incarceration
may be levied for noncompliance.
IMPORTANT
This unit must be matched with an indoor coil as
specified in Lennox' Engineering Handbook. Coils
previously charged with HCFC−22 must be flushed.
NOTICE TO INSTALLER
UNIT PLACEMENT
It is critical for proper unit operation to place outdoor unit on an elevated
surface as described in Unit Placement section on page 7.
BRAZING LINE SET TO SERVICE VALVES
Follow the brazing technique illustrated starting on page 12 to avoid
damaging the service valve's internal seals.
DEFROST OPERATION
It is critical for proper time / temperature defrost operation to set the
defrost termination pins (P1) on the defrost control prior to starting
system. See Defrost System section on page 29 for further details.
Also note that a low pressure bypass switch is required when operating
unit below 15ºF (page 28).
08/11
*2P0811*
INSTALLATION
INSTRUCTIONS
®
Elite
Series XP14 Units
HEAT PUMPS
506772−01
08/11
Supersedes 06/11
TABLE OF CONTENTS
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Servicing and Weighing In Refrigerant for Units
Shipping and Packing List
Check the unit for shipping damage and listed times below
are intact. If damaged, or if parts are missing, immediately
contact the last shipping carrier.
1
Assembled XP14 outdoor unit
General
The XP14 outdoor unit uses HFC−410A refrigerant. This
unit must be installed with a matching indoor blower coil
and line set as outlined in the XP14 Engineering
Handbook. These outdoor units are designed for use in
check / expansion valve (CTXV) systems only and are not
to be used with other refrigerant flow control devices. An
indoor coil check / expansion valve approved for use with
HFC−410A must be ordered separately and installed prior
to operating the unit.
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506772−01
*P506772-01*
Litho U.S.A.
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Table of Contents
Related Manuals for Lennox Elite XP14−018−230
Summary of Contents for Lennox Elite XP14−018−230
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Page 1: Table Of Contents
....This unit must be matched with an indoor coil as specified in Lennox’ Engineering Handbook. Coils Shipping and Packing List previously charged with HCFC−22 must be flushed. -
Page 2: Model Number Identification
Model Number Identification − − − P 14 036 Refrigerant Type Minor Revision Number X = HFC−410A Voltage 230 = 208/230V−1ph−60hz Unit Type P = Heat Pump Outdoor Unit Nominal Cooling Capacity 018 = 1.5 tons 024 = 2 tons Series 030 = 2.5 tons 036 = 3 tons... -
Page 3: Unit Parts Arrangement
Typical Unit Parts Arrangement CONTROL PANEL CAPACITOR (C12) CONTACTOR− DEFROST CONTROL 1POLE (K1−1) (CMC1) THERMAL PROTECTION SWITCH (S173) GROUND SWITCH COVER ONLY ON UNITS USING EXTERNAL SWITCH COMPRESSOR MUFFLER 5−TON UNIT EXAMPLED HERE DEFROST TRUE SUCTION THERMOSTAT (S6) PORT CHECK EXPANSION VALVE REVERSING VALVE... -
Page 4: Caps And Fasteners Torque Requirements
To close rotate stem clockwise 90°. Caps and Fasteners Torque Requirements TO INDOOR UNIT When servicing or repairing HVAC equipment and components, ensure the fasteners are appropriately tightened. Table 1 list torque values for various caps and BALL (SHOWN CLOSED) fasteners. -
Page 5: Important
Allen wrench rated at less than 50Rc risks rounding or breaking off the wrench, or stripping the valve stem recess. Reinstall Stem Cap: See the Lennox Service and Application Notes Stem cap protects the valve stem from damage and serves Corp.0807−L5 (C−08−1) -
Page 6: Recovering Refrigerant From Existing System
Recovering Refrigerant from Existing System CONNECT MANIFOLD GAUGE SET DISCONNECT POWER Connect a manifold gauge set, clean recovery cylinder and a Disconnect all power to the existing outdoor unit at the disconnect recovery machine to the service ports of the existing unit. switch and/or main fuse box/breaker panel. -
Page 7: New Outdoor Unit Placement
New Outdoor Unit Placement ELEVATING THE UNIT CAUTION Units are outfitted with elongated support feet as illustrated in figure 6, detail C. In order to avoid injury, take proper precaution when lift- ing heavy objects. If additional elevation is necessary, raise the unit by extending the height of the unit support feet. - Page 8 DETAIL A Outside Unit Placement DETAIL B Slab Mounting at Ground Level Install unit away from windows. Install unit level or, if on a slope, maintain slope tolerance of two (2) degrees (or two inches per five feet [50 mm per 1.5 m]) away from building structure.
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Page 9: Removing And Installing Panels
Removing and Installing Panels LOUVERED PANEL REMOVAL IMPORTANT! DO NOT ALLOW PANELS TO HANG ON UNIT BY TOP TAB. TAB IS FOR Remove the louvered panels as follows: ALIGNMENT AND NOT DESIGNED TO SUPPORT WEIGHT OF PANEL. 1. Remove two screws, allowing the panel to swing open PANEL SHOWN SLIGHTLY ROTATED TO ALLOW TOP TAB TO EXIT (OR slightly. -
Page 10: Line Set Requirements
Field refrigerant piping consists of both liquid and vapor outlined under Flushing Line Set and Indoor Coil on page lines from the outdoor unit to the indoor coil. Use Lennox L15 (sweat, non−flare) series line set, or field−fabricated refrigerant line sizes as specified in table 2. - Page 11 Line Set Isolation The following illustrations are examples of proper refrigerant line set isolation: REFRIGERANT LINE SET INSTALLING REFRIGERANT LINE SET TRANSITION VERTICAL RUNS (NEW CONSTRUCTION SHOWN) FROM VERTICAL TO HORIZONTAL NOTE Insulate liquid line when it is routed through areas where the surrounding ambient temperature could become higher than the temperature of the liquid line or when pressure drop is equal to or greater ANCHORED HEAVY NYLON...
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Page 12: Brazing Connections
Brazing Connections Use the procedures outline in figures 9 and 10 for brazing line set connections to service valves. WARNING IMPORTANT Polyol Ester (POE) oils used with HFC−410A Allow braze joint to cool before removing the wet rag refrigerant absorb moisture very quickly. It is very from the service valve. - Page 13 CAP AND CORE REMOVAL CUT AND DEBUR Cut ends of the refrigerant lines square (free from nicks or dents) Remove service cap and core from both the suction / vapor and and debur the ends. The pipe must remain round. Do not crimp end liquid line service ports.
- Page 14 WRAP SERVICE VALVES To help protect service valve seals during brazing, wrap water saturated cloths around service valve bodies and copper tube stubs. Use additional water saturated cloths underneath the valve body to protect the base paint. FLOW NITROGEN Flow regulated nitrogen (at 1 to 2 psig) through the refrigeration gauge set into the valve stem port connection on the liquid service valve and out of the suction / vapor valve stem port.
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Page 15: Indoor Refrigerant Metering Device Removal And Flushing Line Set And Indoor Coil
Indoor Refrigerant Metering Device Removal and Flushing Line Set and Indoor Coil Flushing is only required when the existing system used HCFC−22 refrigerant. If the existing system used HFC−410a, then remove the original indoor coil metering device and proceed to Installing New Indoor Metering Device on page 16. TYPICAL EXISTING FIXED ORIFICE TYPICAL EXISTING EXPANSION VALVE REMOVAL REMOVAL PROCEDURE (UNCASED... -
Page 16: Installing New Indoor Metering Device
See the Lennox XP14 Engineering Handbook for approved check / expansion valve kit match−ups. The check / expansion valve device can be installed either internal or external to the indoor coil. In applications where an uncased coil is being installed in a field−provided plenum, install the check / expansion valve in a manner that will provide access for field servicing... -
Page 17: Leak Test Line Set And Indoor Coil
Leak Test Line Set and Indoor Coil IMPORTANT Leak detector must be capable of sensing HFC refrigerant. CONNECT GAUGE SET Connect an HFC−410A manifold gauge set high pressure hose to the HIGH vapor valve service port. NOTE Normally, the high pressure hose is connected to the liquid MANIFOLD GAUGE SET line port. -
Page 18: Evacuating Line Set And Indoor Coil
Evacuating Line Set and Indoor Coil Evacuating the system of non−condensables is critical for proper operation of the unit. Non−condensables are defined as any gas that will not condense under temperatures and pressures present during operation of an air conditioning system. Non−condensables and water suction combine with refrigerant to produce substances that corrode copper piping and compressor parts. -
Page 19: Electrical Connections
Electrical IMPORTANT In the U.S.A., wiring must conform with current local codes Use a thermocouple or thermistor electronic vacuum and the current National Electric Code (NEC). In Canada, gauge that is calibrated in microns. Use an instrument wiring must conform with current local codes and the current capable of accurately measuring down to 50 microns. - Page 20 Figure 15. Typical Unit Wiring Diagram Page 20 506728−01...
- Page 21 Figure 16. Typical Factory Wiring (Copeland Compressor) Page 21 XP14 SERIES...
- Page 22 Figure 17. Typical Factory Wiring (Interlink Compressor) Page 22 506728−01...
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Page 23: Unit Start−Up
WARNING Electric Shock Hazard. Can cause injury or death. Unit must be grounded in accordance with national and local codes. Line voltage is present at all components when unit is not in operation on units with single-pole contactors. Disconnect all remote electric power supplies before opening access panel. Unit may have multiple power supplies. - Page 24 3. Inspect all factory− and field−installed wiring for loose 6. Monitor the system to determine the amount of connections. moisture remaining in the oil. It may be necessary to replace the bi−flow filter drier several times to achieve the required dryness level. If system dryness is not 4.
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Page 25: Optimizing System Refrigerant Charge
DISTRIBUTOR OUTDOOR UNIT NOTE − ARROWS INDICATE DIRECTION OF REFRIGERANT FLOW REVERSING VALVE CHECK / EXPANSION VALVE OUTDOOR COIL INDOOR UNIT BI−FLOW FILTER / DRIER MUFFLER TRUE SUCTION VAPOR PORT SERVICE PORT LIQUID LINE COMPRESSOR SERVICE PORT CHECK / EXPANSION VALVE INDOOR NOTE −... - Page 26 1. Determine the desired DT Measure entering air temper- Temp. 24 24 24 23 23 22 22 22 20 19 18 17 16 15 ature using dry bulb (A) and wet bulb (B). DT is the intersect- of air entering 23 23 23 22 22 21 21 20 19 18 17 16 15 14 ing value of A and B in the table (see triangle).
- Page 27 APPROVED MATCHED SYSTEM COMPONENTS, TARGETED SUBCOOLING (SC) VALUES AND ADD CHARGE VALUES Listed below are the approved matched system Subcooling values listed in the following tables are based components (air handlers and indoor coils), targeted on outdoor ambient air temperature of: subcooling and add charge values for the XP14.
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Page 28: System Operation
Table 5. Indoor Unit Matches, Targeted Subcooling, and Add Charge Values Subcool Subcool Subcool Additional Additional Additional Indoor Model # Indoor Model # Indoor Model # Size Charge Size Charge Size Charge Heat Cool Heat Cool Heat Cool CBX27UH−018 CH33−43C CH33−60D CBX27UH−024 CR33−30, −36... -
Page 29: Defrost System
auto−reset switch closes when the compressor casing The defrost control provides automatic switching from temperature falls to 151−187°F (66°C−86°C), and the normal heating operation to defrost mode and back. When compressor is re−energized. This single−pole, single−throw the defrost thermostat is closed, the control accumulates (SPST) bi−metallic switch is wired in series with the 24V Y compressor run time at 30, 60 or 90 minute field adjustable input signal to control compressor operation. -
Page 30: Maintenance (Dealer And Homeowner)
Pressure Switch Circuit 6. Check amp−draw outdoor fan motor. The defrost control incorporates two pressure switch UNIT NAMEPLATE: _________ ACTUAL: __________ circuits. high pressure switch (S4) NOTE If owner reports insufficient cooling, the unit factory-connected to the defrost control’s HI PS terminals should be gauged and refrigerant charge checked. - Page 31 See the thermostat homeowner manual for instructions on publications: how to operate your thermostat. Lennox XP14 Engineering Handbook Heat Pump Operation Lennox Product Catalog Your new Lennox heat pump has several characteristics that you should be aware of: Lennox Price Book Page 31 XP14 SERIES...
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Page 32: Start−Up And Performance Checklist
Start−Up and Performance Checklist Job Name Job no. Date Job Location City State Installer City State Unit Model No. Serial No. Service Technician Nameplate Voltage Rated Load Ampacity Compressor Amperage: Maximum Fuse or Circuit Breaker Electrical Connections Tight? - Indoor Filter clean? - Supply Voltage (Unit Off) Indoor Blower RPM S.P.