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Table of Contents
- 1 Unit Placement
- 2 Slab Mounting
- 3 Refrigerant Piping
- 4 Leak Test and Evacuation
- 5 Disconnect Switch
- 6 Install Thermostat
- 7 Unit Operation
- 8 Unit Start-Up
- 9 Operating Manifold Gauge Set and Service Valves
- 10 Checking Refrigerant Charge
- 11 Homeowners Information
- 12 Professional Maintenance
- 13 Start up Checks
- 14 Cooling Mode
- Download this manual
THIS MANUAL MUST BE LEFT WITH THE
HOMEOWNER FOR FUTURE REFERENCE
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, or service agency.
WARNING
To prevent serious injury or death:
1. Lock-out/tag-out before performing maintenance.
2. If system power is required (e.g., smoke detector
maintenance), disable power to blower, remove fan
belt where applicable, and ensure all controllers
and thermostats are set to the "OFF" position before
performing maintenance.
3. Always keep hands, hair, clothing, jewelry, tools, etc.
away from moving parts.
CAUTION
As with any mechanical equipment, contact with sharp
sheet metal edges can result in personal injury. Take
care while handling this equipment and wear gloves and
protective clothing.
SETTING THE UNIT – Clearances
See NOTES
See
NOTES
See NOTES
©2023 Lennox Industries Inc.
Dallas, Texas, USA
NOTES:
Service clearance of 30 in. (762 mm) must be maintained on one of
the sides adjacent to the control box.
Clearance to one of the other three sides must be 36 in (914 mm).
See
Clearance to one of the remaining two sides may be 12 in. (305mm)
NOTES
and the final side may be 6 in.(152 mm).
A clearance of 24 in. (610 mm) must be maintained between two units.
48 in. (1219 mm) clearance required on top of unit.
Control
Box
Page 1
INSTALLATION
INSTRUCTIONS
Elite
Series EL22XPV Units
®
HEAT PUMP
508302-01
9/2023
PACKING LIST
WARRANTY
CERTIFICATE
OUTDOOR UNIT
General
This EL22XPV outdoor air conditioner with all-aluminum
coil is designed for use with HFC-410A refrigerant only.
This unit must be installed with an approved indoor air han-
dler or coil. For AHRI Certified system match-ups and ex-
panded ratings, visit www.LennoxPros.com. The EL22XPV
variable capacity unit may be installed with an S30 com-
municating thermostat or a standard 24VAC non-communi-
cating heat pump thermostat. See field wiring diagrams for
wiring details. These instructions are intended as a general
guide and do not supersede local codes in any way. Con-
sult authorities having jurisdiction before installation.
NOTICE!
Charging information is given on the charging
procedure sticker on the unit access panel. For more in-
depth information, consult the Installation and Service
Procedures manual on LennoxPros.com or through the
Technical Support department at 800-453-6669.
IMPORTANT: Special procedures are required for clean-
ing the all-aluminum coil in this unit. See page 21 in this
instruction for information.
RAST 6-PIN
CONNECTORS (2)
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Related Manuals for Lennox Elite EL22XPV Series
Summary of Contents for Lennox Elite EL22XPV Series
- Page 1 INSTALLATION ©2023 Lennox Industries Inc. Dallas, Texas, USA INSTRUCTIONS Elite Series EL22XPV Units ® HEAT PUMP 508302-01 9/2023 PACKING LIST THIS MANUAL MUST BE LEFT WITH THE WARRANTY HOMEOWNER FOR FUTURE REFERENCE CERTIFICATE RAST 6-PIN OUTDOOR UNIT CONNECTORS (2) WARNING...
-
Page 2: Unit Placement
UNIT DIMENSIONS – INCHES (MM) TOP VIEW C (depth) B (width) DISCHARGE AIR LIQUID LINE CONNECTION (height) ELECTRICAL INLETS SUCTION LINE CONNECTION 2 (51) 4−3/4 4−1/4(108) (121) 1 (25) SIDE VIEW END VIEW UNIT SUPPORT FEET Model Number EL22XPV-024 39 (991) EL22XPV-036 35-1/2 (902) 39-1/2 (1003) 16-7/8 (429) 8-3/4 (222) 3-1/8 (79) -
Page 3: Slab Mounting
WARNING ELEVATED SLAB MOUNTING USING FEET EXTENDERS To prevent personal injury, as well as damage to panels, Use additional 2" SCH 40 male unit or structure, observe the following: 2" (50.8MM) SCH 40 threaded adapters which can FEMALE THREADED be threaded into the female While installing or servicing this unit, carefully stow all ADAPTER threaded adapters to make... -
Page 4: Refrigerant Piping
13.8 kPa). empty all existing traps. Polyvinyl ether (PVE) and polyol WARNING ester (POE) oils are used in Lennox variable-capacity units charged with HFC-410A refrigerant. Residual mineral oil can act as an insulator, preventing proper Refrigerant can be harmful if it is inhaled. Refrigerant heat transfer. - Page 5 NOTE – Maximum lifts are dependent on total length, line sets longer than 51 feet. Use tables 2 and 3 to de- termine the correct liquid and vapor line sizes. number of elbows, etc. that contribute to total pressure drop. •...
- Page 6 REFRIGERANT PIPING – Removing Existing Indoor Metering Device TYPICAL EXISTING FIXED ORIFICE TYPICAL EXISTING EXPANSION VALVE REMOVAL REMOVAL PROCEDURE PROCEDURE (UNCASED COIL SHOWN) (UNCASED COIL SHOWN) STUB END TWO-PIECE PATCH PLATE LIQUID LINE CHECK DISTRIBUTOR TUBES (UNCASED COIL ONLY) ORIFICE EXPANSION LIQUID LINE ORIFICE HOUSING HOUSING...
- Page 7 REFRIGERANT PIPING – Brazing Procedures 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 and debur the ends. The pipe must remain round. Do not crimp end both the vapor and liquid line service of the line.
- Page 8 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 vapor valve stem port.
- Page 9 REFRIGERANT PIPING – Install Indoor Expansion Valve This outdoor unit is designed for use in systems that include an expansion valve metering device (purchased separately) at the indoor coil. See the EL22XPV Product Specifications bulletin (EHB) for approved expansion valve kit match-ups and application information.
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Page 10: Leak Test And Evacuation
LEAK TEST AND EVACUATION LEAK TEST HIGH MANIFOLD GAUGE SET OUTDOOR UNIT TO VAPOR SERVICE VALVE NOTE - Position canister to deliver liquid refrigerant. NITROGEN HFC-410A CONNECT GAUGE SET A - Connect the high pressure hose of an HFC-410A manifold gauge set to the vapor valve service port. NOTE - Normally, the high pressure hose is connected to the liquid line port. - Page 11 EVACUATION HIGH CONNECT GAUGE SET NOTE - Remove cores from service valves (if not already done). A - Connect low side of manifold gauge set with 1/4 SAE in-line tee to vapor line service valve B - Connect high side of manifold gauge set to OUTDOOR MANIFOLD liquid line service valve...
- Page 12 Electrostatic discharge can affect three minutes to prevent compressor short cycling. The electronic components. Take care Lennox M30, CS7500, CS3000 and many other commer- during unit installation and service to cially available electronic thermostats provide this feature. protect the unit’s electronic controls.
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Page 13: Disconnect Switch
EL22XPV Thermostat Control Options Qty. of EL22XPV Field Wiring Thermostat Type Indoor Unit Type Wires to Terminal Strip Unit Operation Diagram EL22XPV Connections S30 Communicating Comunicating Gas Fully Communicating Variable Capacity R, I+, I-, C Figure 13 Thermostat Furnace or Air Handler Operation Based Upon Thermostat Demand Conventional 24VAC Any Furnace or Air... - Page 14 ROUTE CONTROL WIRES Communicating Thermostat Wiring Maximum length of wiring (18 gauge) for all connections on the RSBus is 1500 feet (457 meters). Wires should be color-coded, with º º a temperature rating of 95 F (35 C) minimum, and solid-core (Class II Rated Wiring). All low voltage wiring must enter unit through field-provided field-installed grommet installed in electrical inlet.
- Page 15 EL22XPV DATS (Optional) RAST 6-Pin Connectors OATS (Optional) Communicating Indoor Unit EL22XPV Outdoor Unit HD Display S30 Smart Hub Subbase or Mag-Mount PROVIDED RAST 6-PIN CONNECTOR INDOOR CONTROL Indoor Control Single Wire To C Terminal Single Wire To C Terminal Unused Wires Unused Wires FIGURE 13.
- Page 16 FIGURE 14. Conventional 24VAC Cooling Non-Communicating Thermostat Wiring Page 16...
- Page 17 5 – Outdoor Unitary Control - Jumpers and Terminals 7 SEGMENT DISPLAY CHARGE MODE JUMPER (CHRG MODE) CHARGE MODE AND OPERATION MODE JUMPER DETAIL OPERATION MODE JUMPER PUSH BUTTON RAST TERMINALS FOR THERMOSTAT WIRING CONNECTION nicating thermostat, the charge mode jumper must be in- Outdoor Control 7 Segment Display and stalled on the Charge Mode Pins after providing a Y1 cool- Push Button...
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Page 18: Unit Operation
When the Operation Mode jumper is installed in the “Com- 3 - After evacuation is complete, open the liquid line and fort Mode” the suction pressure setpoint is 125 psig. vapor line service valve stems to release the refrigerant charge (contained in outdoor unit) into the system. Unit Operation 4 - Replace the stem caps and tighten to the value EL22XPV Unit Operation with a S30 Communicating... - Page 19 TABLE 1 – TORQUE REQUIREMENTS OPERATING ANGLE-TYPE SERVICE VALVE Parts Recommended Torque 1 - Remove stem cap with an appropriately sized wrench. Service valve cap 8 ft.-lb. 11 NM 2 - Use a service wrench with a hex-head extension (3/16" for liquid line valve sizes and 5/16"...
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Page 20: Checking Refrigerant Charge
If you are unsure about length is less than 15 ft. (4.6 m), subtract this amount. the filter required for your system, call your Lennox dealer NOTE – Insulate liquid line when it is routed through areas where for assistance. -
Page 21: Professional Maintenance
(less than 50psi). If the being affected by indoor air contamination. Check coil cannot be cleaned using water alone, Lennox condition of insulation on the refrigerant lines. recommends use of a coil cleaner with a pH in the Repair, correct, or replace as necessary. -
Page 22: Start Up Checks
EL22XPV Start-Up and Performance Checklist Customer Address Indoor Unit Model Serial Outdoor Unit Model Serial Notes: START UP CHECKS Refrigerant Type: Rated Load Amps: Actual Amps Rated Volts Actual Volts Condenser Fan Full Load Amps Actual Amps: COOLING MODE Suction Pressure: Liquid Pressure: Supply Air Temperature: Ambient Temperature:...
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Questions and answers
I have 2 EL22xpv-036 heat pumps installed in a new house and this is our first winter. At what temp should we stop using them in the winter. It is currently -10 and it feels like they are just blowing cold air
The Lennox EL22XPV Series heat pumps can operate during winter when temperatures are below 45°F (7°C), as frost can develop on the outdoor coil during the heating cycle at these temperatures.
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