Table of Contents
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E2000 Lennox Industries Inc.
Dallas, Texas, USA
HS27 Outdoor Unit
HS27 outdoor units are designed for expansion valve sys-
tems only. They are not designed for RFC systems. Refer to
Lennox engineering handbook for expansion valve kits
which must be ordered separately.
Shipping & Packing List
1 − Assembled HS27 outdoor unit
2 − Grommets (for liquid and vapor lines)
1 − Bushing (for low voltage wiring)
Check equipment for shipping damage. If you find any
damage, immediately contact the last carrier.
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, person-
al injury or loss of life. Installation and service must
be performed by a qualified installer or service
agency.
IMPORTANT
The Clean Air Act of 1990 bans the intentional vent-
ing of refrigerant (CFC's and HCFC's) as of July 1,
1992. Approved methods of recovery, recycling or
reclaiming must be followed. Fines and/or incarcera-
tion may be levied for noncompliance.
02/04
*2P0204*
INSTALLATION
INSTRUCTIONS
HS27 SERIES UNITS
CONDENSING UNITS
504,669M
02/04
Supersedes 12/02
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RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
General Information
These instructions are intended as a general guide and do
not supersede local codes in any way. Consult authorities
having jurisdiction before installation.
WARNING
This product and/or the indoor unit it is matched with
may contain fiberglass wool.
Disturbing the insulation during installation, mainte-
nance, or repair will expose you to fiberglass wool
dust. Breathing this may cause lung cancer. (Fiber-
glass wool is known to the State of California to
cause cancer.)
Fiberglass wool may also cause respiratory, skin,
and eye irritation.
To reduce exposure to this substance or for further
information, consult material safety data sheets
available from address shown below, or contact your
supervisor.
Lennox Industries Inc.
P.O. Box 799900
Dallas, TX 75379−9900
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504,669M
*P504669M*
Litho U.S.A.
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Table of Contents
Related Manuals for Lennox HS27-024
Summary of Contents for Lennox HS27-024
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Page 1: Table Of Contents
....tems only. They are not designed for RFC systems. Refer to RETAIN THESE INSTRUCTIONS Lennox engineering handbook for expansion valve kits FOR FUTURE REFERENCE which must be ordered separately. -
Page 2: Hs27 Outdoor Unit
3-7/8 18-5/8 2-3/4 (70) (98) (98) (473) 4-7/8 (22) (102) (102) 1-3/8 6-1/16 28-1/8 (714) 26-5/8 (676) (35) (154) (51) (51) Access View Side View Model No. 30-7/8 12-3/4 HS27-024 HS27-024 HS27-030 40-7/8 19-3/4 HS27-036 HS27-036 HS27-042 1038 Page 2... -
Page 3: Unit Dimensions
Parts Arrangement outdoor fan (not shown) ground lug top of cabinet run capacitor contactor vapor valve terminal box and gauge port liquid line service valve and gauge port compressor low pressure switch high pressure switch Figure 1 Setting the Unit Installation Clearances CAUTION *36"... -
Page 4: Electrical
A − Slab Mounting Refer to the furnace or blower coil installation instructions for additional wiring application diagrams and refer to unit When you install the unit at grade level, the top of the slab nameplate for minimum circuit ampacity and maximum should be high enough above the grade so that water from overcurrent protection size. - Page 5 Outdoor Unit Field Wiring Diagram (LEADLESS) YELLOW Figure 4 Thermostat Designations Thermostat Furnace NOTE − see unit wiring diagram for power supply connections. power Outdoor Unit heat Y1 Outdoor Unit cooling indoor blower C Outdoor Unit common NOTE − If the indoor unit is not equipped with blower relay, it must be field−provided and installed (P−8−3251 or equivalent). Figure 5 Page 5...
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Page 6: Refrigerant Piping
(sweat connections) to the indoor coil unnecessary vibration. Line set contact with the structure (flare or sweat connections). Use Lennox L15 (sweat, non- (wall, ceiling or floor) causes some objectionable noise flare) series line sets as shown in table 1 or use field-fabri- when vibration is translated into sound. - Page 7 Refrigerant Line Sets How To Install Vertical Runs (new construction shown) NOTE - Similar installation practices should be used if line set is to be installed on exterior of outside wall. IMPORTANT - Refrigerant Outside Wall Vapor Line Liquid Line lines must not contact wall.
- Page 8 Refrigerant Line Sets: Installing Horizontal Runs To hang line set from joist or rafter, use either metal strapping material Wire Tie or anchored heavy nylon wire ties. (around vapor line only) 8 feet Floor Joist or Roof Rafter Tape or Wire Tie 8 feet Strapping Material (around vapor line only) Metal Sleeve...
- Page 9 Refrigerant Line Sets: Transition From Vertical To Horizontal Automotive Anchored Heavy Muffler-Type Nylon Wire Tie Hanger Wall Wall Stud Stud Strap Liquid Line Strap Liquid Line To Vapor Line To Vapor Line Liquid Line Vapor Line Metal Vapor Line Wrapped in Metal Sleeve Liquid Line...
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Page 10: Refrigerant Metering Device
Expansion valves equipped with Chatleff fittings are avail- Service valve cap 8 ft.− lb. 11 NM able from Lennox. Refer to the Engineering Handbook for Sheet metal screws 16 in.− lb. 2 NM applicable expansion valves for use with specific match- Machine screws #10 28 in.−... -
Page 11: Leak Testing
NOTE − Use a 3/16" hex head extension for liquid line Vapor Line (Ball Type) Service Valve sizes or a 5/16" extension for vapor line sizes. (Valve Open) 3 − Replace the stem cap. Tighten finger tight, then tighten To open: rotate stem counter-clockwise 90_. To close: use adjustable wrench and an additional 1/6 turn. -
Page 12: Evacuation
2 − Connect micron gauge. WARNING 3 − Connect the vacuum pump (with vacuum gauge) to the center port of the manifold gauge set. Danger of explosion: Can cause equipment damage, injury or death. When using a high pressure gas 4 −... -
Page 13: Start−Up
Measure the liquid line temperature and the outdoor ambi- Start−Up ent temperature as outlined below. Close manifold gauge 1 − Rotate the fan to check for frozen bearings or binding. set valves. 2 − Inspect all factory− and field-installed wiring for loose 1 −... - Page 14 5 − The difference between the ambient and liquid temper- Charging Using Normal Operating Pressures atures should match values given in table 4. If the val- and the Approach Method ues don’t agree with the those in table 4, add refriger- TXV Systems –...
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Page 15: System Operation
3 − Visually inspect connecting lines and coils for evidence System Operation of oil leaks. The outdoor unit and indoor blower cycle on demand from 4 − Check wiring for loose connections. the room thermostat. When the thermostat blower switch is 5 −... -
Page 16: Start−Up & Performance Check List
Start−up & Performance Check List 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 Compressor Outdoor Fan Rated Load Ampacity Maximum Fuse or Circuit Breaker Electrical Connections Tight? Indoor Filter Clean? Supply Voltage (Unit Off)