American Standard 2A7A1018A Installer's Manual

ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
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 par-
ticular 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 2A7A5, 2A7A4, 2A7A2, & 2A7A1
Condensing Units.
NOTE: The 2A7A4, 2A7A2,& 2A7A1 outdoor units, except
for the 5 ton models, 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. The 2A7A5 & all 5 ton outdoor units
must be used with indoor units equipped with Thermo-
static Expansion Valve only.
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 reference ALG-APG0*-EN (*latest revi-
sion number).
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.
Clearance must be provided in front of control box (access
panels) & any other side requiring service access to meet
National Electrical Code. Also, the unit location must be far
enough away from any structure to prevent excess roof run-off
water from pouring directly on the unit. When choosing the
location of the unit(s), sound transmission through air and
© 2005 American Standard Inc. All Rights Reserved
INSTALLER'S GUIDE
Condensing Units
Models :
2A7A5024-048, 2A7A4018-060,
2A7A2018-060 & 2A7A1018-060
TOP DISCHARGE — UNRESTRICTED
1
5 FT. ABOVE UNIT
refrigerant lineset should be taken into consideration. It is
recommended to locate unit(s) away from areas (bedrooms, etc.)
where such sound could be objectionable.
4. The top discharge area must be unrestricted for at least
five (5) feet above the unit.
5. When the outdoor unit is mounted on a roof, be sure the roof
will support the unit's weight. Properly selected isolation is
recommended to prevent transmission to the building structure.
6. The maximum length of refrigerant lines from outdoor to
indoor unit should NOT exceed sixty (60) feet.
7. If outdoor unit is mounted above the air handler, maximum
lift should not exceed sixty (60) feet (suction line). If air handler
is mounted above condensing unit, maximum lift should not
exceed sixty (60) feet (liquid line).
8. Locate and install indoor coil or air handler in accordance
with instruction included with that unit.
NOTE: Refer to "Refrigerant Piping Software" Pub. No.
32-3312-0*, and "Refrigerant Piping Manual" Pub. No.
32-3009-0* (the position of the * denotes latest revision
number).
Since the manufacturer has a policy of continuous product
and product data improvement, it reserves the right to
change design and specifications without notice.
11-AC11D2-5