Since the manufacturer has a policy of continuous product
and product data improvement, it reserves the right to
change design and specifications without notice.
© 2009 American Standard Heating & Air Conditioning
11-AC11D1-4
IMPORTANT —
This Document is
customer property
and is to remain with this unit. Please return to service information pack
upon completion of work.
These instructions do not cover all variations in systems
nor provide for every possible contingency to be met in
connection with installation. All phases of this installa-
tion must comply with NATIONAL, STATE AND LOCAL
CODES.
Should further information be desired or should
particular problems arise which are not covered sufficiently for
the purchaser’s purposes, the matter should be referred to your
installing dealer or local distributor.
A. GENERAL
The following instructions cover 4A7A4 Condensing Units.
NOTICE: These outdoor units may be used with indoor units
equipped with Thermostatic Expansion Valve or Accutron™
Flow Control Check Valve (F.C.C.V.) assembly for refriger-
ant flow control only.
▲
WARNING:
These units use R-410A refriger-
ant which operates at 50 to 70% higher pressures than R-22.
Use only R-410A approved service equipment. Refrigerant
cylinders are painted a “Rose” color to indicate the type of
refrigerant and may contain a “dip” tube to allow for charging
of liquid refrigerant into the system. All R-410A systems use
a POE oil that readily absorbs moisture from the atmosphere.
To limit this “hygroscopic” action, the system should remain
sealed whenever possible. Never break a vacuum with air
and always change the driers when opening the system for
component replacement.
Check for transportation damage after unit is uncrated. Report
promptly, to the carrier, any damage found to the unit.
To determine the electrical power requirements of the unit, refer
to the nameplate of the unit. The electrical power available must
agree with that listed on the nameplate.
B. LOCATION & PREPARATION OF THE UNIT
1. When removing unit from the pallet, notice the tabs on the
basepan. Remove tabs by cutting with a sharp tool as shown in
Figure 2 (see page 2).
2. The unit should be set on a level support pad at least as large
as the unit base pan, such as a concrete slab. If this is not the
application used please refer to application bulletin
“ALG-APG**-EN” (* denotes latest revision).
3. The support pad must NOT be in direct contact with any
structure. Unit must be positioned a minimum of 12" from any
wall or surrounding shrubbery to insure adequate airflow. Clear-
Condensing Units
Models:
4A7A4
CAUTION
!
UNIT CONTAINS R-410A REFRIGERANT!
R-410A OPERATING PRESSURE EXCEEDS THE
LIMIT OF R-22. PROPER SERVICE EQUIPMENT IS
REQUIRED. FAILURE TO USE PROPER SERVICE
TOOLS MAY RESULT IN EQUIPMENT DAMAGE OR
PERSONAL INJURY.
SERVICE
USE ONLY R-410A REFRIGERANT AND
APPROVED POE COMPRESSOR OIL.
INSTALLER'S GUIDE
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
TOP DISCHARGE — UNRESTRICTED
5 FT. ABOVE UNIT
1
