Advertisement
Quick Links
4HP14/15 SPLIT SYSTEM HEAT PUMP
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.
215 Metropolitan Drive
West Columbia, SC 29170
506318-03
INSTALLATION INSTRUCTIONS
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
Refrigeration Piping .....................................................4
Electrical Wiring .........................................................12
Start-Up .....................................................................13
Operation ...................................................................14
Maintenance ..............................................................16
Homeowner Information ............................................16
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.
This unit uses R-410A, which is an ozone-friendly HFC
refrigerant. The unit must be installed with a matching
indoor coil and line set. A filter drier approved for use with
R-410A is installed in the unit.
*P506318-03*
Issue 1946
(P) 506318-03
Page 1 of 18
Advertisement
Related Manuals for Lennox 4HP14
Summary of Contents for Lennox 4HP14
-
Page 1: Table Of Contents
INSTALLATION INSTRUCTIONS 4HP14/15 SPLIT SYSTEM HEAT PUMP This manual must be left with the homeowner for future reference. 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. -
Page 2: Installation
When servicing or repairing HVAC components, ensure Installation the fasteners are appropriately tightened. Table 1 shows torque values for fasteners. NOTE: In some cases, noise in the living area has been traced to gas pulsations from improper installation of Fastener Torque equipment. - 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.
-
Page 4: Refrigeration Piping
Be extra careful with sharp bends. Tubing can “kink” very Refrigeration Piping easily, and if this occurs, the entire tube length will have to be replaced. Extra care at this time will eliminate future service problems. • Use only refrigerant grade copper tubes. •... - 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.
-
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 All field wiring must be done in accordance with the National sources. Electrical Code (NEC) recommendations, Canadian Install low voltage wiring from outdoor to indoor unit Electrical Code (CEC) and CSA Standards, or local codes, and from thermostat to indoor unit (see Figure 6). -
Page 13: Start-Up
Oz. Per 5 ft. adjust from 15 Start-Up Liquid Line Set Diameter ft. line set* 3 oz. per 5 ft. 3/8 in. or 0.6 oz. per 1 ft. CAUTION * If line length is greater than 15 ft., add this amount. If line length is less than 15 ft., remove this amount. -
Page 14: Operation
• when the average ambient sensor temperature is Operation below 15° F (-9°C) • for 90 seconds following the start up of the compressor The outdoor unit and indoor blower cycle on demand • during “test” mode from the room thermostat. When the thermostat blower switch is in the ON position, the indoor blower operates High Pressure Switch (HI-PS) continuously. - Page 15 Defrost System Time Delay The defrost system includes two (2) components: a defrost The timed-off delay is 5 minutes long. The delay helps thermostat and a control board. to protect the compressor from short-cycling in case the power to the unit is interrupted or a pressure switch opens. Defrost Thermostat The delay is bypassed by placing the timer select jumper across the TEST pins for 0.5 seconds.
-
Page 16: 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 17 • 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 18 Figure 8. 14/15 SEER Wiring Diagram Page 18 of 18 Issue 1946 506318-03...