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This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in manuals, be alert to
the potential for personal injury or death.
Installation and servicing of air conditioning equipment
can be hazardous due to internal refrigerant pressure
and live electrical components. Only trained and
qualified service personnel should install or service
this equipment. Installation and service performed by
unqualified persons can result in property damage,
personal injury, or death.
ELECTRICAL SHOCK HAZARD!
Risk of electrical shock. Disconnect all
remote power supplies before installing
or servicing any portion of the system.
Failure to disconnect power supplies
can result in property damage, personal
injury, or death.
Sharp metal edges can cause injury. When installing
the unit, use care to avoid sharp edges.
Manufactured By
Allied Air Enterprises LLC
A Lennox International, Inc. Company
215 Metropolitan Drive
West Columbia, SC 29170
506468-01
INSTALLATION INSTRUCTIONS
BHP16L Series
Split System Heat Pump
This manual must be left with the homeowner for future reference.
WARNING
WARNING
WARNING
Save these instructions for future reference
Table of Contents
General ........................................................................... 1
Installation ...................................................................... 2
Refrigerant Piping ........................................................... 4
Electrical Wiring ............................................................ 12
Start-Up ........................................................................ 13
Operation ...................................................................... 14
Control Board Diagnostics and Test Mode ................... 16
Maintenance ................................................................. 21
Homeowner Information ............................................... 21
General
Read this entire instruction manual, as well as the
instructions supplied in separate equipment, before starting
the installation. Observe and follow all warnings, cautions,
instructional labels, and tags. Failure to comply with these
instructions could result in an unsafe condition and/or
premature component failure.
These instructions are intended as a general guide only
for use by qualified personnel and do not supersede any
national or local codes in any way. The installation must
comply with all provincial, state, and local codes as well as
the National Electrical Code (U.S.) or Canadian Electrical
Code (Canada). Compliance should be determined prior
to installation.
4HP16LT units use R410A which is an ozone-friendly HFC
refrigerant. This unit must be installed with a matching
indoor coil and line set. A filter drier approved for use with
410A is installed in the unit.
*P506468-01*
Issue 1946
(P) 506468-01
Page 1 of 24
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Summary of Contents for Lennox Allied Air Enterprises BHP16L
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Page 1: Table Of Contents
A filter drier approved for use with 410A is installed in the unit. Manufactured By *P506468-01* Allied Air Enterprises LLC A Lennox International, Inc. Company 215 Metropolitan Drive (P) 506468-01 West Columbia, SC 29170 Save these instructions for future reference... -
Page 2: Installation
IMPORTANT: This product has been designed and Installation manufactured to meet ENERGY STAR criteria for energy efficiency when matched with appropriate coil components. However, proper refrigerant charge and proper air flow NOTE: In some cases, noise in the living area has been are critical to achieve rated capacity and efficiency. - Page 3 Discharge Air Building Structure 24” Mounting Slab 6”* Ground Level Mounting slab must slope slightly away from building, not to exceed 1/4” per foot. 30” around Control Figure 1. Slab Mounting NOTE: See Table 2 for specific minimum clearance guidelines. Elevate Unit Figure 2.
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Page 4: Refrigerant Piping
Be extra careful with sharp bends. Tubing can “kink” very Refrigerant Piping easily, and if this occurs, the entire tube length will have to be replaced. Extra care at this time will eliminate future • Use only refrigerant grade copper tubes. service problems. - Page 5 Flushing Line Sets CYLINDER CONTAINING GAUGE If the unit will be installed in an existing system that uses CLEAN R-410A TO BE MANIFOLD USED FOR FLUSHING an indoor unit or line sets charged with R-22 refrigerant, (Positioned to deliver liquid installer must perform the following flushing procedure.
- Page 6 Refrigerant Piping - Install Indoor Expansion Valve This outdoor unit is designed for use in systems that include a heat pump expansion valve metering device (purchased separately) at the indoor coil. See the Product Specifications for approved expansion valve kit match-ups and application information.
- 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 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 10 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 11 Liquid and Suction Line Service Valves The liquid line and suction line service valves (see Figure 4) and service ports are used for leak testing, evacuation, charging, and checking charge. Each valve is equipped with a service port which has a factory-installed Schrader valve.
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Page 12: Electrical Wiring
Install room thermostat according to thermostat Electrical Wiring installation instruction and on an inside wall that is not subject to drafts, direct sunshine, or other heat sources. All field wiring must be done in accordance with the National Electrical Code (NEC) recommendations, Install low voltage wiring from outdoor to indoor unit... -
Page 13: Start-Up
Start-Up IMPORTANT Mineral oils are not compatible with R-410A. If oil must be added, it must be a polyolester oil. CAUTION If unit is equipped with a crankcase heater, it should NOTE: Both airflow and refrigerant charge must be be energized 24 hours before unit start-up to prevent monitored for proper system set-up. -
Page 14: Operation
High Pressure Switch (HI-PS) Operation When the high pressure switch trips, the control board will cycle off the compressor, and the strike counter in the Outdoor unit and indoor blower cycle on demand from board will count one strike. the room thermostat. When the thermostat blower switch Pressure Switch Settings is moved to the ON position, the indoor blower operates •... - Page 15 Figure 8. Control Board ambient sensor is detected as being open, shorted or out Temperature Red LED Pins / Wire Sensor of the temperature range of the sensor, the board will not Range °F (°C) (DS1) Color perform demand defrost operation. The board will revert Outdoor -35 (-37) to 280,000 to...
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Page 16: Control Board Diagnostics And Test Mode
Calibration success depends stable system on the control board mounted inside the unit control box. temperatures during the 20-minute calibration period. If This feature is optional for the homeowner, but may impact the board fails to calibrate, another defrost cycle will be testing performance. - Page 17 Control Board Diagnostic LEDs Condition / Code Possible Cause(s) Solution Green No power (24V) to board Check control transformer power (24V). Power problem terminals R & C or board If power is available to board and LED(s) do not light, failure.
- Page 18 No 24V Page 18 of 24 Issue 1946 506468-01...
- Page 19 System Diagnostic Module consecutive flashes. Refer to Table 7 for information on the flash codes. 4HP16LT units contain diagnostic module troubleshooting heat pump system failures. By monitoring Every time the module powers up, the last ALERT LED and analyzing data from the compressor and thermostat flash code that occurred prior to shutdown is displayed demand, the module can accurately detect the cause of for 60 seconds.
- Page 20 LED Status Fault Description Troubleshooting Information ALERT Locked Rotor 1. Run capacitor has failed (Yellow) 2. Low line voltage (contact utility if voltage at disconnect is low) Flash Code 4 • Check wiring connections 3. Excessive liquid refrigerant in compressor 4.
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Page 21: Maintenance
Maintenance Condenser Coils Regular Maintenance Requirements Grass cuttings, leaves, dirt, dust, lint from clothes dryers, Your system should be regularly inspected by a qualified and foliage from trees can be drawn into coils by movement service technician. These regular visits may include of the air. - Page 22 • During the defrost cycle, you may notice steam rising Indicating Light from the outdoor unit. This is a normal occurrence. Most heat pump thermostats have an amber light The thermostat may engage auxiliary heat during the which indicates when the heat pump is operating in the defrost cycle to satisfy a heating demand;...
- Page 23 Figure 9. Two-Stage Wiring Diagram -24, -36, -48 Models Only 506468-01 Issue 1946 Page 23 of 24...
- Page 24 Figure 10. Two-Stage Wiring Diagram -60 Model Only Page 24 of 24 Issue 1946 506468-01...
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