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York 12 SEER - CMA SERIES Installation Manual

12 seer r-22 outdoor split-system air conditioning
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INSTALLATION MANUAL
R-22
OUTDOOR SPLIT-SYSTEM
AIR CONDITIONING
MODELS: 12 SEER - CMA / AC2A / AL2A SERIES
2 TO 5 TONS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
UNIT INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATIONS REQUIRING TXV . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Superheat Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Tubing Hanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Underground Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Heat Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Typical Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SECTION I: GENERAL
The outdoor units are designed to be connected to a matching indoor
coil with sweat connect lines. Sweat connect units are factory charged
with refrigerant for a matching indoor coil plus 15 feet of field supplied
lines.
Matching indoor coils are available with a thermal expansion valve or
an orifice liquid feed sized for the most common usage. The orifice size
and/or refrigerant charge may need to be changed for some indoor-out-
door unit combinations, elevation differences or total line lengths. Refer
to Application Data covering "General Piping Recommendations and
Refrigerant Line Length" (Part Number 036-61920-001).
SECTION II: SAFETY
This is a safety alert symbol. When you see this symbol on
labels or in manuals, be alert to the potential for personal
injury.
Understand and pay particular attention to the signal words DANGER,
WARNING, or CAUTION.
DANGER indicates an imminently hazardous situation, which, if not
avoided, will result in death or serious injury.

TABLE OF CONTENTS

ELECTRICAL CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
EVACUATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
SYSTEM CHARGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
SYSTEM START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
LIST OF TABLES
R-22 Temperature and Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
LIST OF FIGURES
Typical Air Handler Thermostat Wiring . . . . . . . . . . . . . . . . . . . . . . . . .6
Typical Furnace Thermostat Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . .6
CFM Selection Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
WARNING indicates a potentially hazardous situation, which, if not
avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation, which, if not
avoided may result in minor or moderate injury. It is also used to
alert against unsafe practices and hazards involving only property dam-
age
Improper installation may create a condition where the operation of
the product could cause personal injury or property damage.
Improper installation, adjustment, alteration, service or mainte-
nance can cause injury or property damage. Refer to this manual
for assistance or for additional information, consult a qualified con-
tractor, installer or service agency.
This product must be installed in strict compliance with the
enclosed installation instructions and any applicable local, state,
and national codes including, but not limited to building, electrical,
and mechanical codes.
R
P
This product was manufactured
Certification applies only
in a plant whose quality system
when the complete
is certified/registered as being
system is listed
in conformity with ISO 9001.
with ARI.
035-19946-001 Rev. B (0804)
LISTED

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  • Page 1: Table Of Contents

    INSTALLATION MANUAL R-22 OUTDOOR SPLIT-SYSTEM AIR CONDITIONING MODELS: 12 SEER - CMA / AC2A / AL2A SERIES LISTED This product was manufactured Certification applies only in a plant whose quality system when the complete is certified/registered as being system is listed 2 TO 5 TONS in conformity with ISO 9001.

  • Page 2: Unit Installation

    035-19946-001 Rev. B (0804) INSPECTION The outdoor unit must have sufficient clearance for air entrance to the condenser coil, for air discharge and for service access. See Figure 1. As soon as a unit is received, it should be inspected for possible dam- age during transit.

  • Page 3: Tubing Hanger

    035-19946-001 Rev. B (0804) LIQUID LINE FILTER-DRIER Sheet Metal Hanger The air conditioning unit’s copper spun bi-flow filter/dryer is located on Liquid the liquid line. Line NOTE: Replacements for the liquid line drier must be exactly the same Incorrect as marked on the original factory drier. See Source 1 for O.E.M. replacement driers.

  • Page 4: Installations Requiring Txv

    035-19946-001 Rev. B (0804) Protect the vapor valve with a wet rag and braze the vapor line connection to the outdoor unit. The nitrogen flow should be exiting the system from the vapor service port connection. After this con- nection has cooled, remove the nitrogen source from the liquid fit- Dry nitrogen should always be supplied through the tubing while it ting service port.

  • Page 5: Typical Field Wiring

    035-19946-001 Rev. B (0804) Install TXV equalizer line in 1/8” hole previously made in vapor Remove the service access panel to gain access to the unit wiring. line. Equalizer line should not be bottomed out in the vapor line. Route wires from disconnect through power wiring opening pro- Insert equalizer line at least 1/4”...

  • Page 6: Typical Air Handler Thermostat Wiring

    035-19946-001 Rev. B (0804) VARIABLE VARIABLE SPEED SPEED CONDITIONER THERMOSTAT FURNACE THERMOSTAT CONDITIONER AIR HANDLER CONTACTOR CONTACTOR CONTACTOR CONTACTOR COIL COIL COIL COIL HUMIDISTAT CONTACTS OPEN ON HUMIDITY RISE. HUMIDISTAT JUMPER ON CFM SELECTION BOARD MUST BE REMOVED. Y1, Y2, X/L, AND HUM LOCATED ON CFM SELECTION BOARD. HUMIDISTAT CONTACTS OPEN ON HUMIDITY RISE.

  • Page 7: Superheat Value

    035-19946-001 Rev. B (0804) SECTION VI: EVACUATION It will be necessary to evacuate the system to 500 microns or less. If a leak is suspected, leak test with dry nitrogen to locate the leak. Repair Refrigerant charging should only be carried out by a qualified air the leak and test again.

  • Page 8: System Start-Up

    THE OWNER HAS BEEN FULLY INSTRUCTED, SECURE THE OWNER’S APPROVAL. Subject to change without notice. Printed in U.S.A. 035-19946-001 Rev. B (0804) Copyright © by York International Corp. 2004. All rights reserved. Supersedes: 035-19946-001 Rev. A (0404) Unitary 5005 Norman...

This manual is also suitable for:

Ac2a series12 seer -al2aseriesCma seriesAl2a series

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