Lennox 12CHP060, 12CHP048, 12CHP042, 12CHP036, 12CHP030 Installation Instructions Manual



INSTALLATION

E1998 Lennox Industries Inc.

Dallas, Texas, USA

RETAIN THESE INSTRUCTIONS

FOR FUTURE REFERENCE

Shipping & Packing List

1 − Assembled heat pump package unit
As soon as the unit is received, inspect the unit for possible

damage during transit. If damage is evident, the extent of
the damage must be noted on the carrier’s freight bill. Make
a separate request for inspection by the carrier’s agent.

If any damages are discovered and reported to the carrier
DO NOT INSTALL THE UNIT, as claim may be denied.

Check the unit rating plate to confirm specifications are
as ordered.

WARNING

Product contains fiberglass wool.

Disturbing the insulation in this product during
installation, maintenance, or repair will expose you
to fiberglass wool dust. Breathing this may cause
lung cancer. (Fiberglass 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

INSTRUCTIONS

12CHP SERIES UNITS

PACKAGED HEAT PUMP UNIT (2−5 TONS)

504,176M
06/03
Supersedes 01/00

Table of Contents

Shipping & Packing List 1. . . . . . . . . . . . . . . . . . . . . . . . .

General 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Unit Dimensions 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts Arrangement 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Requirements 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Clearances 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Rigging & Setting Unit 4. . . . . . . . . . . . . . . . . . . . . . . . . .

Condensate Drain 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Filters 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Supply & Return Connections 5. . . . . . . . . . . . . . . . . . . .

Outdoor Fan Clearances 5. . . . . . . . . . . . . . . . . . . . . . . .

Compressors 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Optional Electric Heat 5. . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

System Performance 7. . . . . . . . . . . . . . . . . . . . . . . . . . .

Sequence of Operation 10. . . . . . . . . . . . . . . . . . . . . . . .

Maintenance 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Repair Parts List 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General

These instructions explain the recommended method of
installation of the heat pump unit, and associated electri
cal wiring.

This unit is designed and approved for use as a self−con
tained air to air outdoor heat pump system.

The units are factory equipped with a transformer and
blower control for applications without auxiliary heat. Elec
tric heat accessory kits (ECH29) can be ordered for field
installation of additional heat where required.

These instructions, and any instructions packaged with
mating components and/or accessories, should be care
fully read prior to beginning installation. Note particularly
any CAUTIONS or Notes in these instructions and all la
bels on the units.

These instructions are intended as a general guide only for
use by qualified personnel and do not supersede any na
tional or local codes in any way. Compliance with all local,
state, provincial or national codes pertaining to this type of
equipment should be determined prior to installation.

Litho U.S.A.

06/03

*2P0603*

Page 1

504,176M

*P504176M*

Unit Dimensions − inches (mm)

Model

Model

Model

Model

CORNER WEIGHTS  lbs. (kg)

Model

Number

12CHP024 77 35 56 25 61 28 82 37
12CHP030 86 39 63 29 69 31 92 42
12CHP036 117 53 85 39 93 42 125 57

12CHP042 118 54 86 39 94 43 126 57
12CHP048 121 55 88 40 96 44 129 59
12CHP060 127 57 92 42 101 46 135 61

AA BB CC DD

lbs. kg lbs. kg lbs. kg lbs. kg

CENTER OF GRAVITY  inches (mm)

Model

Number

12CHP024 217/8 556 261/2 673
12CHP030 217/8 556 261/2 673
12CHP036 233/4 603 311/4 794
12CHP042 233/4 603 311/4 794
12CHP048 233/4 603 311/4 794
12CHP060 23−3/4 603 31−1/4 794

AA

EE FF

inch mm inch mm

GG

BB

INDOOR

COIL

OUTDOOR

COIL

INTAKE

AIR

OUTDOOR

COIL FAN

OUTDOOR

COIL

FORKLIFT

SLOTS

(Front and

Back Only)

BASE RAIL

COMPRESSOR

CONDENSER COIL

INTAKE AIR

TOP VIEW

OUTDOOR COIL

EXHAUST AIR

FRONT VIEW

OUTDOOR COIL

EXHAUST AIR

B

N

C

BLOWER

OPTIONAL
ELECTRIC

HEAT

(Field

BASE RAIL

Installed)

REFRIGERANT

SERVICE

PORTS

ELECTRICAL

INLETS

KK

JJ

DOWNFLOW

RETURN AIR

OPENING

CENTER

OF

GRAVITY

DD

TOP VIEW BASE SECTION

B

HORIZONTAL

SUPPLY AIR

E

OPENING

K

F

BACK VIEW

C

LE

DOWNFLOW

SUPPLY AIR

OPENING

EE

FF

HORIZONTAL
RETURN AIR

OPENING

(048/060)

HORIZONTAL

RETURN AIR

OPENING

CC

J

2 (51)

J

A

M

K

BASE RAIL

FILTER

RACK

CONDENSATE

DRAIN

45/8
(117)

H

BASE RAIL

P

LEFT SIDE

Model

Number

−024 2711/16 703 455/8 1159 455/8 1159 251/4 641 113/16 46 4 102 17/8 48

−030 3111/16 805 455/8 1159 455/8 1159 291/4 743 113/16 46 4 102 17/8 48

−036, −042, −048, −060 3311/16 856 5411/16 1389 495/8 1260 317/16 799 11/8 29 61/4 159 21/4 57

Model

Number

−024 155/8 397 111/2 292 171/2 445 4 102 5 127 463/8 1179 463/8 1179

−030 155/8 397 111/2 292 171/2 445 4 102 5 127 463/8 1179 463/8 1179

−036, −042, −048, −060 171/8 435 12 305 211/2 546 55/8 143 41/8 105 551/4 1403 501/2 1283

A B C D E F G

inch mm inch mm inch mm inch mm inch mm inch mm inch mm

H J K L M N P

inch mm inch mm inch mm inch mm inch mm inch mm inch mm

D

A

27/16

(62)

Page 2

ELECTRIC

HEAT

POWER INLET

OPTIONAL

ELECTRIC HEAT

(Field Installed)

RIGHT SIDE

BLOWER

BASE RAIL

Parts Arrangement

OUTDOOR FAN

OUTDOOR COIL

COMPRESSOR

BLOWER

TRANSFORMER

INDOOR

BLOWER MOTOR

DEFROST CONTROL

BLOWER CONTROL

HEATER BLOCKOFF

(FOR OPTIONAL ELECTRIC HEAT)

FIGURE 1

Requirements

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 qualified installer or service agency.

Unit should be installed in accordance with all national and
local safety codes.

NOTE − For improved start−up performance, the indoor coil
should be washed with suitable detergent to remove any
residue from manufacturing processes.

Limitations for unit and appropriate accessories must also
be observed.

The unit must not be installed with any duct system in the
outdoor air stream. The outdoor fan is not designed to oper
ate against any additional static pressure.

Minimum and maximum operating conditions must be ob
served to assure maximum system performance with mini
mum service required.

CONTACTOR

CAPACITOR

Clearances

In the U.S., units may be installed on combustible floors
made from wood or class A, B, or C roof covering material.
In Canada, units may be installed on combustible floors.
Units must be installed outdoors.

SERVICE CLEARANCES FOR UNITS

TOP CLEARANCE IS 48"

BOTTOM CLEARANCE IS 0"

REAR

36"*

RETURN SUPPLY

LEFT

12"

24"

FRONT

*Rear clearance is 36" with or 2" without an economizer.

FIGURE 2

RIGHT

12"

Page 3