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E 2000 Lennox Industries Inc.
Dallas, Texas, USA
HP40 Heat Pump Unit
HP40 heat pumps use R407C which is an ozone friendly
HFC refrigerant. This unit must be installed with a match-
ing indoor coil and line set as outlined in the Lennox Engi-
neering Handbook. HP40 heat pumps are designed for
use in expansion valve systems only. They are not de-
signed to be used in RFC systems. An expansion valve
and filter drier approved for use with R407C have been
shipped with the unit. These components must be
installed prior to unit operation.
IMPORTANT
This unit must be matched with an indoor coil as
specified in Lennox' Engineering Handbook.
Coils previously charged with R22 must be
flushed.
WARNING
This equipment must only be installed and serviced
by properly qualified personnel. Equipment con-
tains dangerous voltages and moving parts. Al-
ways switch off power supply before opening any
access panel. Electrical control panel doors and fan
access door must be locked to prevent unautho-
rized access at beginning of instruction.
WARNING
Refrigerant can be harmful if it is inhaled. Refriger-
ant must be used and recovered responsibly.
Failure to follow this warning may result in personal
injury or death.
06/04
*2P0604*
®
INSTALLATION
INSTRUCTIONS
HP40 Heat Pump Units
HEAT PUMP UNITS
1−1/2 through 5 ton
504,538M
06/04
Supersedes 11/02
Table of Contents
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RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
Shipping & Packing List
1 − Assembled HP40 heat pump unit
1 − Bag assembly:
1 − Sight glass
1 − Coupling reducer, 5/16 x 3/8 inch (024)
Check unit for shipping damage. If any damage is found,
contact the last carrier immediately.
General Information
These instructions are intended as a general guide and
do not supersede national or local codes in any way. Con-
sult authorities having jurisdiction before installation.
The HP40 unit is CE marked" in accordance with the re-
quirements of the latest European Directives for Electrical
and Machinery Safety and Electromagnetic Compatibility.
In addition, HP40 units have type Approval Certification
with the Gas Appliance Directive.
IMPORTANT
International Legislation bans the intentional vent-
ing of refrigerant (CFCs and HCFCs). Approved
methods of recovery, recycling or reclaiming must
be followed. Fines and/or incarceration may be lev-
ied for noncompliance.
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504,538M
*P504538M*
Litho U.S.A.
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Related Manuals for Lennox HP40
Summary of Contents for Lennox HP40
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Page 1: Table Of Contents
....... ing indoor coil and line set as outlined in the Lennox Engi- Maintenance . -
Page 2: Unit Dimensions
Unit Dimensions − mm INLET HP40 OPTIONAL STAND-OFF KIT INLET INLET (Field−installed COMPRESSOR 4 required) COIL DRAIN OUTLETS (Around perimeter of base) VAPOR LINE CONNECTION LIQUID LINE CONNECTION INLET TOP VIEW TOP VIEW BASE SECTION DISCHARGE OUTDOOR COIL FAN COMPRESSOR VAPOR &... -
Page 3: Setting The Unit
Slab Mounting (See figure 2) Setting the Unit When the unit is installed at grade level, the top of the slab Heat pump units operate under a wide range of weather should be high enough above the grade so that water conditions;... -
Page 4: Electrical
See the unit di- trol terminals in the outdoor unit as shown in figure 4. FIELD WIRING DIAGRAM FOR HP40 UNIT TB1 TERMINAL STRIP S1 THERMOSTAT... -
Page 5: Plumbing
If refrigerant tubes are routed through a wall, seal and iso- installation. Take care to empty all existing traps. late the opening so vibration is not transmitted to the Polyol ester (POE) oils are used in Lennox units building. charged with R407C refrigerant. Polyol ester oils are not compatible with mineral oils. - Page 6 FLUSHING CONNECTIONS INVERTED R22 CYLINDER HIGH PRESSURE PRESSURE HP40 UNIT SUCTION LINE SERVICE VALVE EXISTING SUCTION LINE GAUGE MANIFOLD EXISTING OPENED CLOSED EXISTING LIQUID LINE...
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Page 7: Manifold Gauge Set
HP40 COOLING CYCLE (SHOWING MANIFOLD GAUGE CONNECTIONS) OUTDOOR UNIT DEFROST THERMOSTAT DISTRIBUTOR REVERSING VALVE EXPANSION/CHECK VALVE BIFLOW OUTDOOR FILTER / DRIER COIL INTERNAL COMPRESSOR HIGH INDOOR UNIT LIMIT PRESSURE PRESSURE MUFFLER GAUGE MANIFOLD SUCTION SERVICE VAPOR PORT LINE LIQUID LINE... -
Page 8: Leak Testing
Vapor Line (Ball−Type) Service Valve −− 5−Ton Units IMPORTANT A ball-type full−service valve is used on five-ton units. These vapor line service valves function the same way, the differ- Service valves are closed to the heat pump unit and ences are in construction. Valves are not rebuildable. If a open to line set connections. -
Page 9: System Evacuation
gen cylinder with the pressure regulator set to 150 System Evacuation psig (1034 kPa) and purge the hose. Open the man- ifold gauge valves to break the vacuum in the system. Close the manifold gauge valves. WARNING Unit contains a NITROGEN holding charge. The WARNING holding charge must be purged and the system must be evacuated prior to charging with R407C. -
Page 10: Charging Considerations
Polyol ester (POE) oils will open the service port. are used in Lennox units charged with R407C re- 2 − With the manifold gauge hose still on the liquid ser- frigerant. Mineral oils are not compatible with vice port and the unit operating, read the liquid line polyol ester oils. - Page 11 TABLE 3 R407C Saturated Liquid Temperature and Pressure Chart Use this chart for subcooling only, not superheat. Liquid Line Pressure Liquid Line Pressure Saturated Liquid Saturated Liquid Saturated Liquid Saturated Liquid R407C R407C Temperature °C Temperature °C Psig (kPa) Psig (kPa) Psig (kPa) Psig (kPa) 116 (799)
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Page 12: System Operation
The unit is equipped with a biflow filter drier. See figure 6. Defrost System If the filter needs to be replaced, order another of the The HP40 defrost system includes two components: a de- same design. frost thermostat and a defrost control. -
Page 13: Maintenance
LEDs flash a specific sequence according to the condition. Indoor Unit TABLE 3 1 − Clean or change the filters. DEFROST CONTROL BOARD DIAGNOSTIC LED 2 − Lennox blower motors are pre-lubricated and perma- MODE LED 1 LED 2 nently sealed. The blower motor requires no more lu-... - Page 14 Start−Up and Performance Check List Job Name Job No. Date City Job Location State Installer City State Unit Model No. Serial No. Service Technician Nameplate Voltage Amps: Minimum Circuit Ampacity Supply Outdoor Fan Maximum Overcurrent Protection Size Compressor Electrical Connections Tight? Indoor Filter Clean? Supply Voltage (Unit Off) Indoor Blower RPM...
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- Page 16 Lennox Industries P.O. Box 174, Westgate Interchange, Northampton NN5 5AG Telephone: 01604 591159 Facsimile: 01604 587536 Page 16...