HVAC Partners R2A3, WCA3**2, R2AM Installation Instructions Manual

INSTALLATION INSTRUCTIONS

R−22 Split System Air Conditioner

Product Family: R2A3, R2AM, WCA3**2

These instructions must be read and understood completely before attempting installation.

Safety Labeling and Signal Words

DANGER, WARNING, CAUTION, and
NOTE

The signal words DANGER, WARNING,
CAUTION, and NOTE are used to identify levels of

hazard seriousness. The signal word DANGER is
only used on product labels to signify an immediate
hazard. The signal words WARNING, CAUTION,
and NOTE will be used on product labels and
throughout this manual and other manuals that may
apply to the product.

DANGER − Immediate hazards which will result in
severe personal injury or death.

WARNING − Hazards or unsafe practices which
could result in severe personal injury or death.

CAUTION − Hazards or unsafe practices which
may result in minor personal injury or product or

property damage.

NOTE − Used to highlight suggestions which will
result in enhanced installation, reliability, or operation.

Signal Words in Manuals

The signal word WARNING is used throughout this
manual in the following manner:

WARNING

!

The signal word CAUTION is used throughout this
manual in the following manner:

!

Signal Words on Product Labeling

Signal words are used in combination with colors
and/or pictures on product labels.

WARNING

CAUTION

TABLE OF CONTENTS

Inspect New Unit 2...............................

Safety Considerations 2...........................

Location 2.......................................

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

Unit Support 2...................................

Refrigeration System 3...........................

Electrical Wiring 7................................

Start−up Procedure 8.............................

Refrigerant Charge 8.............................

Sequence of Operation 9..........................

Maintenance 9...................................

!

DEATH, PERSONAL INJURY, AND/OR PROPERTY
DAMAGE HAZARD

Failure to carefully read and follow this warning
could result in equipment malfunction, property
damage, personal injury and/or death.

Installation or repairs made by unqualified
persons could result in equipment malfunction,
property damage, personal injury and/or death.

The information contained in this manual is
intended for use by a qualified service technician
familiar with safety procedures and equipped with
the proper tools and test instruments.

Installation must conform with local building
codes and with the National Electrical Code
NFPA70 current edition or Canadian Electrical
Code Part 1 CSA C.22.1.

WARNING

421 01 5203 02 5/23/14

INSTALLATION INSTRUCTIONS R−22 Split System Air Conditioner

INSPECT NEW UNIT

After uncrating unit, inspect thoroughly for hidden
damage. If damage is found, notify the transportation
company immediately and file a concealed damage
claim.

SAFETY CONSIDERATIONS

Consult a qualified installer, service agency, or the
dealer/distributor for information and assistance. The
qualified installer must use factory authorized kits and
accessories when modifying this product. Refer to the
individual instructions packaged with the kit or accessory
when installing.

The weight of the product requires careful and proper
handling procedures when lifting or moving to avoid
personal injury. Use care to avoid contact with sharp or
pointed edges.

Follow all safety codes. Wear safety glasses, protective
clothing, and work gloves. Use a heat sinking material −
such as a wet rag − during brazing operations. Keep a fire
extinguisher available. Consult local codes and the
National Electric Code (NEC) for special requirements.

Improper installation, adjustment, alteration, service or
maintenance can void the warranty.

!

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in
personal injury or death.

Before installing, modifying or servicing system,
main electrical disconnect switch must be in the
OFF position. There may be more than 1
disconnect switch. Lock out and tag switch with a
suitable warning label.

!

CUT HAZARD

Failure to follow this caution may result in
property damage.

Sheet metal parts may have sharp edges or burrs.
Use care and wear appropriate protective clothing
and gloves when handling parts.

WARNING

CAUTION

LOCATION

Check local codes for regulations concerning zoning,
noise, platforms, and other issues.

Locate unit away from fresh air intakes, vents, or
bedroom windows. Noise may carry into the openings
and disturb people inside.

Locate unit in a well drained area, or support unit high
enough so that water runoff will not enter the unit.

Locate unit away from areas where heat, lint, or exhaust
fumes will be discharged onto unit (as from dryer vents).

Locate unit away from recessed or confined areas where
recirculation of discharge air may occur (refer to
CLEARANCES section of this document).

Roof−top installation is acceptable providing the roof will
support the unit and provisions are made for water
drainage and noise/vibration dampening.

NOTE: Roof mounted units exposed to wind may require
wind baffles. Consult the manufacturer for additional
information.

CLEARANCES

When installing, allow sufficient space for airflow
clearance, wiring, refrigerant piping, and service. Allow
24 in. (610 mm) clearance to service end of unit and 48
in. (1219.2 mm) above unit. For proper airflow, a 6 in.
(152.4 mm) clearance on one side of unit and 12 in.
(304.8 mm) on all remaining sides must be maintained.
Maintain a distance of 24 in. (609.6 mm) between units
or 18 in. (457.2 mm) if no overhang within 12 ft.
(3.66m). Position so water, snow, or ice from roof or
eaves cannot fall directly on unit.

UNIT SUPPORT

NOTE: Unit must be level ± 2 degrees [3/8 inch rise or fall

per foot of run (10 mm rise or fall per 305 mm of run)] or
compressor may not function properly.

A. GROUND LEVEL INSTALLATION

The unit must be level and supported above grade by
beams, platform, or a pad. Platform or pad can be of open
or solid construction but should be of permanent
materials such as concrete, bricks, blocks, steel, or
pressure− treated timbers approved for ground contact.
Soil conditions must be considered so that the platform or
pad does not shift or settle and leave the unit partially
supported. Minimum pad dimensions are shown in Figure

2.
If beams or an open platform are used for support, it is

recommended that the soil be treated or area be graveled
to reduce the growth of grasses and weeds.

To minimize vibration or noise transmission, it is
recommended that supports not be in contact with the
building structure. However, slabs on grade constructions
with an extended pad are normally acceptable.

B. ROOF TOP INSTALLATION

This type of installation is not recommended on wood
frame structures where low noise levels are required.

Supporting structure or platform for the unit must be level.
If installation is on a flat roof, locate unit minimum 6 inches
(152mm) above roof level.

Place the unit over one or more load bearing walls. If there
are several units, mount them on platforms that are
self−supporting and span several load bearing walls.
These suggestions are to minimize noise and vibration
transmission through the structure. If the structure is a
home or apartment, avoid locating the unit over
bedrooms or study.

2 421 01 5203 02

Specifications subject to change without notice.

INSTALLATION INSTRUCTIONS R−22 Split System Air Conditioner

NOTE: When unit is to be installed on a bonded

guaranteed roof, a release must be obtained from the
building owner to free the installer from all liabilities.

C. FASTENING UNIT DOWN

If conditions or local codes require the unit be attached in
place, remove the knockouts in the base pan and install
tie down bolts through the holes (refer to Figure 2).

Contact local distributor for hurricane hold−down details
and the P.E. (Professional Engineer) certification, when
required.

!

CAUTION

PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in

property damage.
Inadequate unit support may cause excessive

vibration, noise, and/or stress on the refrigerant
lines, leading to refrigerant line failure.

Figure 2 Tie Down Knockouts

a” (10mm) dia. Tie Down Knockouts
In Base Pan (2 places)

View From Top

R−22 outdoor units can only be used with R−22 specific
indoor coils. If there is a refrigerant mis−match, consult
the indoor coil manufacturer to determine if a refrigerant
conversion kit is available for the indoor coil.

This outdoor unit is designed for use only with indoor coils
that utilize a TXV refrigerant metering device. If any other
type of metering device is installed on the indoor coil,
consult the indoor coil manufacturer to determine if a TXV
conversion kit is available.

The compressors for these units are supplied with Polyol
Ester (POE) Oil. If the existing line set and indoor coil has
residual mineral oil (MO) there is no concern with
percentage of oil mixtures as both are miscible with the
R−22. Mixtures of both oils at any percentage will
lubricate and return with the R−22.

!

WARNING

EXPLOSION AND FIRE HAZARD
Failure to follow this warning could result in

property damage, personal injury, or death.
This unit is designed to use ONLY R−22

refrigerant. Use ONLY R−22 refrigerant when
charging or servicing this unit.
DO NOT under any circumstances use any
refrigerant other than R−22 in this unit.

A

Base Pan

Width x Depth

23 x 23

(584 x 584)

25−11/16 x 25−11/ 16

(652 x 652)

31−1/8 x 31−1/8

(791 x 791)

Base Pan Width

Inches (mm)

Tie Down

Knockouts

A B C

7−3/4

4−7/16

(197)

9−1/16

(230)

9−1/16

(230)

(113)18(457)

4−7/16

(113)

6−1/2

(165)

21−1/4

(540)

24−5/8

(625)

Base

Pan

Depth

C

B

Minimum

Mounting Pad

Dimensions

23 x 23

(584 x 584)

26 x 26

(660 x 660)

31−1/2 x 31−1/2

(800 x 800)

When installing a TXV on an indoor coil, follow the
instructions provided with the new TXV.

A typical TXV installation is shown in Figure 3.

Figure 3 Typical TXV Installation

INDOOR

EQUALIZER

COIL

TUBE

SENSING
BULB

SUCTION
TUBE

LIQUID
TUBE

TXV

SENSING

STRAP

BULB
(EITHER
SIDE)

REFRIGERATION SYSTEM

A. COMPONENT MATCHES

Check to see that the proper system components are in
place, especially the indoor coil.

421 01 5203 02 3

8 O’CLOCK 4 O’CLOCK

Specifications subject to change without notice.

SUCTION

TUBE