American Standard AccuLink Charge Assist 4A7A6 Series Assembly instructions

Air Conditioner/Heat Pump
4A7A6/4A6H6 with AccuLink™and Charge Assist™
11-BC11D1-9
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.
Installer’s Guide
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.
1’ Behind
From Service Panel
3’
5’ Above
Unrestricted
1Single Unit Installation
These instructions and illustrations do not cover all varia-
tions in systems nor provide for every possible contingency
to be met in connection with installation. All phases of this
installation 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 install-
ing dealer or local distributor.
A. GENERAL
WARNING
!
This information is intended for use by individuals possessing
adequate backgrounds of electrical and mechanical experience. Any
attempt to repair a central air conditioning product may result in
personal injury and or property damage. The manufacturer or seller
cannot be responsible for the interpretation of this information, nor
can it assume any liability in connection with its use.
NOTICE:
American Standard Heating & Air Conditioning has always
recommended installing approved matched indoor and outdoor
systems. The benefits of installing approved matched systems
are maximum efficiency, optimum performance and best overall
system reliability.
NOTE:
These units use R-410A refrigerant which operates at 50 to 70%
higher pressures than R-22. Use only R-410A approved service equip-
ment. 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. If a system has been open to the atmosphere for more than
4 hours, the compressor oil must be replaced. Never break a vacuum
with air and always change the driers when opening the system for
component replacement. For specific handling concerns with R-410A
and POE oil, reference Retrofit Bulletin TRN-APG02-EN.
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 AND PREPARATION OF THE UNIT
(INFORMATION APPLICABLE TO HEAT PUMPS ONLY:)
The Heat Pump has been designed and manufactured to withstand
and operate in severe winter conditions. However, there are pre-
cautionary steps which should be taken at the time of installation
which will help assure the efficient operation of the unit. It is rec-
ommended that these precautions be taken for units being
installed in areas where snow accumulation and prolonged
below freezing temperatures occur.
1. Units should be elevated three (3) to twelve (12) inches above
the pad or rooftop, depending on local weather. This additional
height will allow drainage of snow and ice (melted during
defrost cycle) prior to its refreezing. This reduces the chance
of ice build-up around the unit which occurs when unit is not
elevated. Insure that drain holes in unit base pan are not
obstructed preventing draining of defrost water.
2. If possible, avoid locations that are likely to accumulate snow
drifts. If not possible, a snow drift barrier should be installed
around the unit to prevent a build-up of snow on the sides of
the unit and should be of sufficient distance from the unit to
prevent restriction of airflow to and from the unit (see note 3,
next section). Also allow for proper maintenance space. The
barrier should be constructed of materials which will blend in
with the building design.
3. Avoid locating the unit where condensation and freezing of
defrost vapor may annoy the customer. For instance, installing
the unit under a bedroom, kitchen, or picture window may be
annoying to the customer since condensate and fog will occur
during the defrost cycle.
4. Avoid locating the unit under the eaves or other overhead
structures as sizeable icicles may form and the unit may be
damaged by these falling icicles.

© 2011 American Standard Heating & Air Conditioning 11-BC11D1-9
Installer’s Guide
(INFORMATION APPLICABLE TO ALL UNITS:)
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 and slide unit off of pallet.
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 Guide SSC-
APG008-EN.
3. The support pad must NOT be in direct contact with any struc-
ture. 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) and 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. Do not locate unit(s) close to bedroom(s).
4. The top discharge area must be unrestricted for at least five (5)
feet above the unit. See Figure 1.
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 twenty-five (25) feet (suction line). If air han-
dler is mounted above condensing unit, maximum lift should
not exceed twenty-five (25) feet (liquid line).
8. Locate and install indoor coil or air handler in accordance with
instruction included with that unit.
C. INSTALLING REFRIGERANT LINES
CAUTION
!
If using existing refrigerant lines make certain that all joints are
brazed, not soldered.
Condensing units have provisions for braze connections.
Pressure taps are provided on the service valves of outdoor unit for
compressor suction and liquid pressures.
The indoor end of the recommended refrigerant line sets may be
straight or with a ninety (90) degree bend, depending upon applica-
tion requirements. This should be thoroughly checked out before
ordering refrigerant line sets.
NOTE: The gas line must always be insulated.
The units are factory charged with the system charge required when
using fifteen (15) feet of rated connecting line. See unit nameplate.
Final refrigerant charge adjustment is necessary. Use Charge
Assist™ or the Manual Charging procedure found in the outdoor
unit Service Facts. Charge level can always be verified with the
Refrigerant Charging Chart found in the Service Facts.
1. Determine the most practical way to run the lines.
2. Consider types of bends to be made and space limitations.
NOTE:
Large diameter tubing will be very difficult to rebend once it has
been shaped.
3. Determine the best starting point for routing the refrigerant
tubing — INSIDE OR OUTSIDE THE STRUCTURE.
4. Provide a pull-thru hole of sufficient size to allow both liquid
and gas lines.
5. Be sure the tubing is of sufficient length.
6. Uncoil the tubing — do not kink or dent.
7. Route the tubing making all required bends and properly
secure the tubing before making connections.
8. To prevent a noise within the building structure due to vibra-
tion transmission from the refrigerant lines, the following
precautions should be taken:
a. When the refrigerant lines have to be fastened to floor
joists or other framing in a structure, use isolation type
hangers.
b. Isolation hangers should also be used when refrigerant
lines are run in stud spaces or enclosed ceilings.
c. Where the refrigerant lines run through a wall or sill, they
should be insulated and isolated.
d. Isolate the lines from all ductwork.
D. SERVICE VALVE OPERATION
BRASS LIQUID LINE SERVICE VALVE
The Brass Liquid Line Service Valve is factory shipped in the
seated position to hold factory charge. The pressure tap service
port (when depressed) opens only to the field brazing side of the
valve when the valve is in the seated position. The liquid line valve
is not a back seating valve (see WARNING below).
WARNING
!
Extreme caution should be exercised when opening the Liquid
Line Service Valve. Turn valve stem counterclockwise only until
the stem contacts the rolled edge. (See Figure 3). No torque is
required. Failure to follow this warning will result in abrupt re-
lease of system charge and may result in personal injury and/or
property damage.
BRASS GAS LINE BALL SERVICE VALVE
The Brass Gas Line Service Valve is shipped in the closed position
to hold the factory refrigerant charge. The pressure tap service
port (when depressed) opens only to the field brazing side when the
valve is in the closed position.
The Gas Line Ball Service Valve is full open with a 1/4 turn. See
Figure 4.
BRAZING REFRIGERANT LINES
1. Remove lower access cover to access service valves.
2. Before brazing, remove plugs from external copper stub tubes.
Clean internal and external surfaces of stub tubes prior to
brazing.
3. Cut and fit tubing, minimizing the use of sharp 90° bends.
4. Insulate the entire gas line and its fittings.
5. Do NOT allow uninsulated liquid line to come in direct con-
tact with bare gas line.
HOT SURFACE!
DO NOT TOUCH TOP OF COMPRESSOR.
May cause minor to severe burning.
CAUTION
!
LIQUID LINE SERVICE VALVE
3
BASEPAN
TAB REMOVAL
2

11-BC11D1-9 3
Installer’s Guide
CAP 1/4 TURN ONLY
COUNTERCLOCKWISE
FOR FULL OPEN
POSITION
VALVE STEM
GAS LINE CONNECTION
UNIT SIDE
OF VALVE
PRESSURE TAP PORT
GAS LINE BALL SERVICE VALVE
4
6. Precautions should be taken to avoid heat damage
to the pressure tap valve core during brazing. It is
recommended that the pressure tap port valve core be
removed and a wet rag wrapped around the valve body.
NOTE:
Use care to make sure that no moisture enters pressure tap port,
while wet rag is being used.
NOTE:
Precautions should be taken to avoid heat damage to basepan
during brazing. It is recommended to keep the flame directly off
of the basepan.
7. Use a Dry Nitrogen Purge and Brazing Alloy without flux
when brazing the field line to the copper factory connection.
Flow dry nitrogen into either valve pressure tap port, thru the
tubing and out the other port while brazing.
8. Braze using accepted good brazing techniques.
LEAK CHECK
IMPORTANT:
Replace pressure tap port valve core before attaching hoses for
evacuation.
After the brazing operation of refrigerant lines to both the outdoor
and indoor unit is completed, the field brazed connections must
be checked for leaks. Pressurize through the service valve ports,
the indoor unit and field refrigerant lines with dry nitrogen to 350-
400 psi. Use soap bubbles or other leak-checking methods to see
that all field joints are leak-free! If not, release pressure; then
repair!
SYSTEM EVACUATION
NOTE:
Since the outdoor unit has a refrigerant charge, the gas and
liquid line valves must remain closed.
1. Upon completion of leak check, evacuate the refrigerant lines
and indoor coil before opening the gas and liquid line valves.
2. Attach appropriate hoses from manifold gauge to gas and
liquid line pressure taps.
NOTE:
Unnecessary switching of hoses can be avoided and complete
evacuation of all lines leading to sealed system can be accom-
plished with manifold center hose and connecting branch hose to
a cylinder of R-410A and vacuum pump.
3. Attach center hose of manifold gauges to vacuum pump.
4. Evacuate until the micron gauge reads no higher than 350 mi-
crons.
5. Close off valve to vacuum pump and observe the micron
gauge. If gauge pressure rises above 500 microns in one (1)
minute, then evacuation is incomplete or system has a leak.
6. If vacuum gauge does not rise above 500 microns in one (1)
minute, the evacuation should be complete.
7. With vacuum pump and micron gauge blanked off, open valve
on R-410A cylinder and charge refrigerant lines and indoor
coil with vapor to tank pressure of R-410A supply.
8. Close valve on R-410A supply cylinder. Close valves on mani-
fold gauge set and remove refrigerant charging hoses from
liquid and gas pressure tap ports.
NOTE:
DO NOT VENT REFRIGERANT INTO THE ATMOSPHERE.
NOTE:
A 3/16" Allen wrench is required to open liquid line service valve.
A 1/4" Open End or Adjustable wrench is required to open gas
line valve. A 3/4" Open End wrench is required to take off the
valve stem cap.
9. The liquid line shut-off valve can now be opened. Remove
shut-off valve cap. Fully insert hex wrench into the stem and
backout counterclockwise until valve stem just touches rolled
edge (approximately five [5] turns) observing WARNING
statement on page 2. See Figure 3.
10. Replace liquid service pressure tap port cap and valve stem
cap. These caps MUST BE REPLACED to prevent leaks.
Replace valve stem and pressure tap cap finger tight, then
tighten an additional 1/6 turn.
11. The gas valve can now be opened. For a ball type gas valve,
open the gas valve by removing the shut-off valve cap and turn-
ing the valve stem 1/4 turn counterclockwise, using 1/4" Open
End or Adjustable wrench. See Figure 4 and refer to Step 8
prior to opening gas valve.
12. The gas valve is now open for refrigerant flow. Replace valve
stem cap to prevent leaks. Again, these caps MUST BE RE-
PLACED to prevent leaks. Replace valve stem and pressure
tap cap finger tight, then tighten an additional 1/6 turn. See
Figure 4.
If refrigerant lines are longer than fifteen (15) feet and/or a
different size than recommended, it will be necessary to adjust
system refrigerant charge upon completion of installation. See
unit Service Facts.
E. ELECTRICAL CONNECTIONS
1. Power wiring and grounding of equipment must comply with
national, state and/or local codes.
2. Power supply must agree with equipment nameplate.
3. Install a separate disconnect switch at the outdoor unit.
4. Ground the outdoor unit per code requirements.
5. Provide flexible electrical conduit whenever vibration trans-
mission may create a noise problem within the structure.
6. The use of color coded low voltage wire is recommended to
simplify connections between the outdoor unit, the AccuLink™
control and the indoor unit.
Table 1 – NEC Class II Control Wiring
NOTE:
The maximum total cable length for the entire Comfort Control
communicating system is 500 ft. 18 AWG.
7. Mount the AccuLink™ control in accordance with instruction
included with the AccuLink™ control. Wire per appropriate
hook-up diagram (included in these instructions).
AccuLink™ Control Wiring
WIRE SIZE MAX. WIRE LENGTH
18 AWG 250 FT
WARNING
!
Live Electrical Components!
During installation, testing, servicing and troubleshooting of
this product, it may be necessary to work with live electrical
components. Failure to follow all electrical safety precautions
when exposed to live electrical components could result in
death or serious injury.

4 11-BC11D1-9
Installer’s Guide
FIELD WIRING DIAGRAM
COMMUNICATING INDOOR UNIT – COMMUNICATING OUTDOOR UNIT
6
FRC_DFT
TEST_COMMON
TST
5PIN
IDENTIFICATION
NOTE: For non-
communicating
systems use
24-volt harness
accessory
BAYACHP024A.
F. DEFROST CONTROL (HEAT PUMPS ONLY)
The demand defrost control measures heat pump outdoor ambi-
ent temperature with a sensor located outside the outdoor coil. A
second sensor located on the outdoor coil is used to measure the
coil temperature. The difference between the ambient and the
colder coil temperature is the difference or delta-T measurement.
This delta-T measurement is representative of the operating state
and relative capacity of the heat pump system. By measuring the
change in delta-T, we can determine the need for defrost. The coil
sensor also serves to sense outdoor coil temperature for termina-
tion of the defrost cycle.
FAULT IDENTIFICATION
A fault condition is indicated by the fault LED on the control board
inside the heat pump control box.
In normal operation, the status LED will flash once each second. If
the light is flashing more than once per second or not at all, refer to
the Service Facts for that unit.
PIN IDENTIFICATION (SEE FIGURE 5.)
1. TEST_COMMON (Shorting any of the other pins to this pin
causes the function of the other pin to be executed. Leaving
this pin open results in the normal mode of operation.)
2. TST = Test (Shorting TEST_COMMON to this pin speeds up
all defrost board timings.)
3. FRC_DFT = Forced Defrost (Short TEST_COMMON to this
pin for two [2] seconds to initiate a forced defrost. Remove the
short after defrost initiates.)
DEFROST CONTROL CHECKOUT
Normal operation requires:
a. Status LED on board flashing 1 time/second.
b. 12VDC between D & B.
c. Defrost initiation when FRC_DFT pin is shorted to TEST_
COMMON pin.
If a defrost control problem is suspected, refer to the service infor-
mation in control box.
G. COMPRESSOR START UP
After all electrical wiring is complete, SET THE ACCULINK™
CONTROL SWITCH IN THE OFF POSITION SO COMPRESSOR
WILL NOT RUN, and apply power by closing the system main dis-
connect switch. This will activate the compressor sump heat (where
used). Do not change the AccuLink™ control Switch until power
has been applied for one (1) hour. Following this procedure will pre-
vent potential compressor overload trip at the initial start-up.

11-BC11D1-9 5
Installer’s Guide
7
8
4TEE3C01-10 AIR HANDLERS WITH 24V COMFORT CONTROL,
24V 2-STAGE OR 2-STEP COOLING
4TEE3C01-10 AIR HANDLERS WITH 24V COMFORT CONTROL,
24V 2-STAGE OR 2-STEP HEAT PUMP

6 11-BC11D1-9
Installer’s Guide
4TEE3F 31-65 FIELD WIRING DIAGRAMS FOR 4A7A6 MODELS ONLY
FIELD WIRING DIAGRAMS FOR 4A7A6 MODELS ONLY
Notes:
1. Be sure power supply agrees with equipment
nameplate.
2. Power wiring and grounding of equipment
must comply with local codes.
3. Low voltage wiring to be No. 18 AWG mini-
mum conductor.
4. If outdoor thermostat (ODT) is not used, con-
nect W2 to W3.
5. Be sure the jumper between “R” and “BK” is
cut or removed
(See Note B below).
6. With “O” and “Y/ Y2” energized, indoor fan is at
80% airflow.
7. With “O”, “Y/ Y2” and “BK” energized, indoor
fan is at 100% airflow.
STEP
See
Note A
(page 7) AIR HANDLER
See Note B (page 7)
See
Note A
(page 7) The Factory installed jumper be-
tween “R” and “BK” on the Furnace
circuit board must be cut.
See Note B (page 7)
FURNACE
LEGEND
FACTORY WIRING
FIELD WIRING
9
0

11-BC11D1-9 7
Installer’s Guide
FIELD WIRING DIAGRAMS FOR 4A6H6 MODELS ONLY
Notes:
1. ODT-B must be set lower than ODT-A.
2. If ODT-B is not used, connect A Jumper wire from W3 to W2. If ODT-A is
not used, connect a jumper wire from W2 to W1.
3. If electric heat does not have 3rd contactor (CH), connect a jumper wire
from W3 to W2. If electric heat does not have 2nd contactor (BH), con-
nect a jumper wire from W2 to W1.
4. X2 must be connected to variable speed air handler terminal W3, as
shown, for proper indoor air flow during the defrost cycle.
5. Connect only if used with applicable indoor thermostat.
REQUIRED WIRING
• RefertoFieldHook-upDiagramsabove.
• 4A7A6/4A6H6unitsrequire80%airowwith“Y1”(rststage),100%airowwith“Y2”(secondstage).
Note A – The installer must jumper at the LVTB “R” to “O”.
Note B – Cut /remove the factory installed “BK” jumper.
• Connect“Y1”fromthermostatto“Y/ Y2” at VS Air Handler/VS Furnace to “Y1” at Outdoor Unit.
• Connect“Y2”fromthermostatto“BK”atVSAirHandler/VS Furnace to “Y2” at Outdoor Unit.
LEGEND
FACTORY WIRING
FIELD WIRING
See
Note A
(below)
STEP
q

8 11-BC11D1-9
Installer’s Guide
NOTE: Outdoor Temperature (ODT) must be between 55°F
and 120°F.
Be sure to set Dip Switches for Line Length and Lift before enter-
ing Charge Assist™ Mode. (See Subcool Charging Table Correc-
tions for Line Length and Rise in the Service Facts for the outdoor
unit.)
To enter Charge Assist™ Mode, press the MODE button for at least
one (1) second. The on-board LEDs will indicate if the system is
capable of continuing. For a detailed description of on-board LEDs
and their function, see the Service Facts.
The system will take approximately 12-20 minutes to stabilize
before the charge can be checked by Charge Assist™. Once the
system is stabilized, watch to see which LED turns on next. If the
system charge is correct, the “CHARGED” LED will turn on and re-
main on for one (1) hour. Once charged, the system will exit Charge
Assist™ and control will return to the Comfort Control.
DIRECTION FOR CHARGE ASSIST™
If the system charge is low, the “ADD” LED will turn on and stay
on up to one (1) hour or until enough refrigerant is added to reach
the required system charge level and turn on the “CHARGED”
LED.
When the “ADD” LED is on, the charging solenoid output will be
active. This feature works to automatically control refrigerant flow
with BAYCAKT001.
If the system charge is high, the “REC” LED will turn on and the
unit will exit Charge Assist™. You must recover refrigerant from
the system before re-entering Charge Assist™.
For instructions on the Charge Assist™ tool BAYCAKT001, see the
Installer's Guide 18-HH15D1-* (the position of the * denotes the
latest revision number).
For additional information on manual charging, please see the
Service Facts shipped with the outdoor unit.
CHARGE ASSIST™ CHARGE ASSIST™ PORT
w e
NOTE: Charge Assist™ port is
designed for liquid refrigerant charging.
SUBCOOL CHARGING TABLE CORRECTIONS FOR LINE LENGTH AND RISE
60
50
40
30
25
20
15
10
0
10 20 25 30 40 60 80
TOTAL REFRIGERANT LINE LENGTH (FEET)
REFRIGERANT LINE LIFT (FEET)
LOWER
UPPER
Dip Switch 1- ON
Dip Switch 2-ON
MIDDLE
Dip Switch 3-ON
Max Lift

11-BC11D1-9 9
Installer’s Guide
SYSTEM FAULTS
REFRIGERANT CIRCUIT
Head Pressure Too High
Head Pressure Too Low
Suction Pressure Too High
Suction Pressure Too Low
Liquid Refrig. Floodback (TXV)
Liquid Refrig. Floodback
(Cap. Tube)
I.D. Coil Frosting
Compressor Runs
Inadequate or No Cooling/Htg
ELECTRICAL
Compressor & O.D. Fan
Won’t Start
Compressor Will Not Start
But O.D. Fan Runs
O.D. Fan Won’t Start
Compressor Hums But Won’t Start
Compressor Cycles on IOL
I.D. Blower Won’t Start
DEFROST
Unit Won’t Initiate Defrost
Defrost Te rminates on Time
Unit Icing Up
WHAT TO CHECK MODE
POWER SUPPLY
HIGH VOLTAGE WIRING
COMPRESSOR IOL
RUN CAPACITOR
START CAPACITOR
START RELAY
CONTACTOR CONTACTS
LOW VOLTAGE WIRING
CONTROL TRANSFORMER
THERMOSTAT
CONTACTOR COIL
LOW VOLTAGE FUSE
STUCK COMPRESSOR
INEFFICIENT COMP.
REF. UNDERCHARGE
REF. OVERCHARGE
EXCESSIVE EVAP. LOAD
NONCONDENSABLES
RES. O.D. AIRFLOW
O.D. AIR RECIRCULATION
TXV STUCK OPEN
SUPERHEAT
RES. I.D. AIRFLOW
REF. CIR. RESTRICTIONS
SOV LEAKING
SOV COIL DEFECTIVE
CHECK VALVE LEAKING
*
DEFROST RELAY DEF.
DEFROST CONTROL DEF.
C
H
C
H
C
H
C
H
C
H
C
H
C
H
C
H
C
H
C
H
C
H
C
H
C
H
C
H
C
H
C
H
C
H
P
P
P
P
P
P
P
P
P
P
P
P
P
P
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
P
P
P
P
S
S
S
S
P
P
P
P
S
S
P
P
P
P
P
P
P
P
P
P
P
P
P
P
S
S
S
S
S
S
S
S
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
S
S
S
S
S
S
S
P
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
P
P
S
S
S
S
S
S
S
S
S
S
S
S
P
P
P
P
P
P
S
S
S
S
S
S
S
S
S
S
S
P
P
S
S
S
S
S
S
S
S
P
P
P
P
P
P
P
S
S
P P
P
P
C - Cooling H - Heating P - Primary Causes S - Secondary Causes *- 3 Phase Only
TROUBLESHOOTING CHART — WHAT TO CHECK
H. OPERATIONAL AND
CHECKOUT PROCEDURES
Final phases of this installation are the unit Operational and
Checkout Procedures which are found in this instruction on page
11. To obtain proper performance, all units must be operated and
charge adjustments made in accordance with procedures found in
the Service Facts.
IMPORTANT:
Perform a final unit inspection to be sure that factory tubing has not
shifted during shipment. Adjust tubing if necessary so tubes do not rub
against each other when the unit runs. Also be sure that wiring con-
nections are tight and wire routing is secure.
I. ELECTRIC HEATERS
Electric heaters, if used, are to be installed in the air handling
device according to the instructions accompanying the air handler
and the heaters.
J. SEACOAST SHIELD
If installed within one mile of salt water, including seacoasts and
inland waterways, models without factory supplied Seacoast Salt
Shields require the addition of BAYSEAC001 (Seacoast Kit) at in-
stallation time. Please refer to Application Guide SS-APB007-EN:
American Standard HVAC - Sea Coast Applications.
IMPORTANT:
See Limited Warranty information in Use and Care Manual.

10 11-BC11D1-9
4A7A6/4A6H6 OUTLINE DRAWING
NOTE: ALL DIMENSIONS ARE IN MM (INCHES).
From Dwg. D152862 Rev. 22
MODELS BASE A B C D E F G H J K
4A7A6024C
4A6H6024C 3 933 (36-3/4) 829 (32-5/8) 756 (29-3/4) 5/8 5/16 143 (5-5/8) 92 (3-5/8) 210 (8-1/4) 79 (3-1/8) 508 (20)
4A7A6036C 4 841 (33-1/8) 946 (37-1/4) 870 (34-1/4) 3/4 3/8 152 (6) 98 (3-7/8) 219 (8-5/8) 86 (3-3/8) 508 (20)
4A6H6036C 4 943 (37-1/8) 946 (37-1/4) 870 (34-1/4) 3/4 3/8 152 (6) 98 (3-7/8) 219 (8-5/8) 86 (3-3/8) 508 (20)
4A7A6048C
4A7A6060C
4A6H6048C
4A6H6060C
41045 (41-
17/8) 946 (37-1/4) 870 (34-1/4) 7/8 3/8 152 (6) 98 (3-7/8) 219 (8-5/8) 86 (3-3/8) 508 (20)
Installer’s Guide
r

11-BC11D1-9 11
Installer’s Guide
MOUNTING HOLE LOCATION
NOTE: ALL DIMENSIONS ARE IN MM (INCHES).
CHECKOUT PROCEDURE
After installation has been completed, it is recommended that the entire system be checked against the following list:
1. Refrigerant Line, Leak checked ............................................ [ ]
2. Suction Lines and Fittings properly insulated..................... [ ]
3. Have all Refrigerant Lines been secured and
isolated properly?................................................................... [ ]
4. Have passages through masonry been sealed?
If mortar is used, prevent mortar from coming
into direct contact with copper tubing .................................. [ ]
5. Verify tightness of all electrical connects ............................. [ ]
6. Observe outdoor fan during on cycle for clearance
and smooth operation ............................................................ [ ]
7. Indoor coil drain line drains freely. Pour water
into drain pan......................................................................... [ ]
8. Supply registers and return grilles open and
unobstructed........................................................................... [ ]
9. Return air filter installed ...................................................... [ ]
10. AccuLink™ control is accurate. Check
against a reliable thermometer. Adjust per
instructions with AccuLink™ control ................................... [ ]
11. Is correct airflow setting used?
(Indoor blower motor) ............................................................ [ ]
12. Operate complete system in each mode to
insure safe operation. ............................................................ [ ]
t
From Dwg. D152637 Rev. 2

American Standard Heating & Air Conditioning
www.americanstandardair.com
03/11
American Standard Heating & Air Conditioning has a policy of continuous product and product data
improvement and it reserves the right to change design and specifications without notice.
Installer’s Guide