Fedders CH24ACD1, CH30ACD1, CH36ACD1, CH42ACD1, CH48ACD1 Installation, Operation And Maintenance Manual

Installation, Operation and Maintenance

1.5 Through 5 Ton
Heat Pump

TABLE OF CONTENTS

INTRODUCTION ..............................................................................1

NOTES TO INSTALLER ....................................................................1

CODES ............................................................................................1

RECOGNIZE SAFETY SYMBOLS, WORDS AND LABELS ................1

INSPECTION AND UNPACKING......................................................1

INSTALLATION

Clearances ..........................................................................2

Support ..............................................................................2

Exposure ............................................................................2

Proximity to Evaporator....................................................2

ELECTRICAL CONNECTIONS ..........................................................2

SERVICE VALVE CONNECTIONS

Braze Joints ..............................................................................3

Evacuation ................................................................................3

Opening the Service Valve (Step Valve) ................................3

Opening the Service Valve (Straight Valve) ............................3

CONNECT REFRIGERANT PIPING ..................................................4

Precautions................................................................................4

Liquid Line Sizes........................................................................4

Suction Line Sizes......................................................................4

SUBCOOLING CHARGING ............................................................5

......................................................5

FINAL CHECKS FOR INST

COOLING OPERATION ..................................................................5

HEATING OPERATION ..................................................................5

DEFROST OPERATION ....................................................................6

MAINTENANCE INSTRUCTIONS ....................................................6

CONDENSING UNIT NOMENCLATURE ..........................................6

LIMITED W

ARRANTY

ALLER

....................................................................

7

NOTE:
THESE INSTRUCTIONS ARE INTENDED AS AN AID TO QUALIFIED

SERVICE PERSONNEL FOR PROPER INSTALLATION, ADJUSTMENT
AND OPERATION OF THIS EQUIPMENT. READ THE ENTIRE
INSTRUCTION MANUAL THOROUGHLY BEFORE ATTEMPTING
INST

TION OR OPERA

ALLA

TION.

INTRODUCTION

You have made a major investment in a fine piece of
equipment. Keep your investment sound by reading these

nstructions before installing this unit. This will ensure that

i

he full potential of this equipment is achieved. It will also

t
be helpful in avoiding any needless service costs or
operational problems. Included in these instructions are
safety rules, installation, operation, and maintenance

nstructions.

i
Only the highest quality components were used in the

construction of your unit. With proper maintenance, your
system should provide years of economical, trouble-free
service.

RECOGNIZE SAFETY SYMBOLS, WORDS
AND LABELS

What You Need To Know About Safety
Instructions

Warning and Important Safety Instructions appearing in
this manual are not meant to cover all possible
conditions and situations that may occur. Common
sense, caution and care must be exercised when
operating or cleaning tools and equipment.

Always contact your dealer, distributor, service agent or
manufacturer about problems or conditions you do not
understand.

This is the safety alert symbol. It is used to alert you
to potential personal injury hazards. Obey all safety
messages that follow this symbol to avoid possible
injury or death.

Installation and service personnel are required by some locales

o be licensed. Persons not qualified SHALL NOT install this

t
equipment nor interpret these instructions.

This installation and maintenance manual is provided to ensure
the proper installation and the most satisfactory performance of
your equipment. The instructions contained herein SHALL NOT
be deemed to extend, modify, alter or expand any of the
representations contained in the limited warranty.

WARNING

A QUALIFIED INSTALLER MUST PERFORM INSTALLATION AND
SERVICE.

IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE,
MAINTENANCE OR USE CAN CAUSE EXPLOSION, FIRE,
ELECTRICAL SHOCK OR OTHER CONDITIONS WHICH MAY
CAUSE DEATH, PERSONAL INJURY OR PROPERTY DAMAGE
AND WILL VOID THE WARRANTY. REFER TO THIS MANUAL FOR
PROPER INSTRUCTIONS.

DO NOT DESTROY THIS MANUAL. PLEASE READ CAREFULLY
AND KEEP IN A SAFE PLACE FOR FUTURE REFERENCE BY A
SERVICE TECHNICIAN.

DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE
VAPORS AND LIQUIDS OR OTHER COMBUSTIBLE MATERIALS IN
THE VICINITY OF THIS OR ANY OTHER EQUIPMENT.

BEFORE PERFORMING ANY WORK ON THIS EQUIPMENT,
POWER SUPPLY MUST BE TURNED OFF AT THE HOUSEHOLD
SERVICE BOX TO AVOID THE POSSIBILITY OF SHOCK, INJURY,
DAMAGE TO EQUIPMENT OR DEATH.

CONSULT A QUALIFIED INSTALLER FOR INFORMATION OR
ASSISTANCE.

DANGER

DANGER indicates an imminently hazardous situation
which, if not avoided, will result in death or serious injury.

WARNING

WARNING indicates a potentially hazardous situation
which, if not avoided, could result in death or serious injury

CAUTION

CAUTION indicates a potentially hazardous situation which,
if not avoided, may result in minor or moderate injury.

CAUTION

CAUTION used without the safety alert symbol indicates a
potentially hazardous situation which, if not avoided, may
result in property damage.

NOTES TO INSTALLER

The words “SHALL” and “MUST” indicate a requirement
which is essential to satisfactory and safe product
performance. The words “SHOULD” and “MAY” indicate a
recommendation or advice which is not essential and not
required but which may be useful or helpful.

CODES

The installer SHALL comply with all local, state, and federal
codes and/or regulations pertaining to this type of equipment
and its installation. Such codes and/or regulations should take
precedence over any recommendations contained herein in lieu
of local codes. Installations SHALL be made in accordance with

.

the National Electrical Code, local codes and recommendations
made by the National Board of Fire Underwriters. Consult local
building codes and National Electrical Code (NEC) for special
requirements.

INSPECTION AND UNPACKING

A thorough inspection of the shipping container should be
made immediately upon receiving your unit. Look for any
punctures or openings and if it appears damage has occurred
note it on the freight bill before signing. Contact the delivering
carrier immediately to inspect damage, and no installation
work should begin until this inspection is completed.

Locate rating plate on unit corner panel. It contains
information needed to properly install unit. Check rating plate
to be sure unit matches job specification.

111

Rating plate located inside
control box cover

1

INSTALLATION
Condensing Unit Location

The condensing unit should be located outdoors as close as
possible to the evaporator. Consider the following factors:

Clearances

The air inlet should be located at least 12" from a wall or other

bstruction for unrestricted air flow.

o
The air outlet should be located so as to direct discharged air

away from the building. Three feet of clearance around the
unit and a minimum of six feet clearance above the unit is
required to avoid recirculation of condenser discharge air on
vertical discharge models. Avoid locating unit under low
overhanging roofs.

Support

Mount the unit on a sturdy base approximately four to six
inches above the ground. In areas known for snow
accumulation, the unit should be elevated at least 18" above
the ground. A concrete slab is recommended. Concrete slab
should not contact the building foundation to prevent possible
sound or vibration transmission.

Rooftop installation is acceptable in areas of low snow
accumulations, provided the roof will support the unit and
provisions are made for water drainage and the noise or
vibration through the structure.

Exposure

If practical, unit should be located on the south side of the
structure away from northerly winds to minimize the effects of
blowing snowdrifts and freezing rain. A wind screen or wind
block can also be used.

Placement of the unit should be in a well-drained area, or the
unit must be supported high enough so run-off will not enter
the unit.

Avoid installations under roof overhangs without guttering.
Water draining from the roof onto the unit could produce
excessive noise and may cause ice to build up on the coil or fan
during cold weather.

Locate unit away from windows, patios, decks, etc. where unit
operation sound may disturb customer.

Do not locate where heat, lint or exhaust fumes will be
discharged on the unit (as from dryer or furnace vent).

112

Proximity to Evaporator

Locating the condenser as close as possible to the evaporator
will increase the system capacities by reducing the line set
refrigerant pressure drop, and will make the system less

usceptible to liquid migrations due to less refrigerant charge.

s

Electrical Connections

WARNING

BEFORE PERFORMING ANY WORK ON THIS EQUIPMENT,
POWER SUPPLY MUST BE TURNED OFF AT THE HOUSEHOLD
SERVICE BOX TO AVOID THE POSSIBILITY OF SHOCK,
INJURY, DEATH OR DAMAGE TO EQUIPMENT.

WARNING

ELECTRICAL EQUIPMENT SHOULD BE INSTALLED BY A
QUALIFIED, LICENSED ELECTRICIAN. IMPROPER
ELECTRICAL HOOK-UP MAY DAMAGE EQUIPMENT, CAN
CREATE A HAZARD, CAUSE PERSONAL INJURY OR
DEATH, AND WILL VOID THE WARRANTY.

1. The installer shall check available power to make certain it
matches the unit rating plate (located inside control box
cover) and that constant voltage can be maintained to the
unit. Unsatisfactory performance would otherwise result.
The local power company should be contacted regarding
any problems or questions concerning power supply.

113

114

Control box

cover

Opening for line
voltage conduit or cable

Opening for
low-voltage wiring

Wiring diagram and rating
plate are located inside
control box cover

Rain Gutters

Six feet

clearance

above the

unit

Three feet

clearance

Concrete slab

Three feet

clearance

2. Install a line service disconnect switch within sight of the
condensing unit. The line voltage service wiring for the
condensing unit should include a fused disconnect switch.

3. Use correct wire size and fuse size. To ensure that adequate
voltage will be available at the condensing unit, the line
voltage service wiring must be of adequate size. Minimum
recommended wire ampacities and maximum fuse sizes are
listed on the unit name plate.

4. Two holes are provided in the control box.

One is for the connection of the line voltage conduit or

a.

cable. The hole is sized for 3/4" conduit.

b. One is for low-voltage wiring. (Refer to the wiring

diagram attached to electrical box cover for connection.)

5. Be sure to ground the condensing unit by securing the

ground wire to the grounding lug inside the control box.
Be sure to follow National Electrical Code and all local

6.

codes.

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