American standard 4a6c4036a3000a Assembly instructions

SSAAFFEETTYY WWAARRNNIINNGG

Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and

air-conditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered

equipment by an unqualified person could result in death or serious injury. When working on the equipment, observe all precautions in the

literature and on the tags, stickers, and labels that are attached to the equipment.

November 2016 11-BC41D1-1A-EN

Split System Heat Pump

3–Phase, 230V

3–Phase, 460V

223300VV MMOODDEELLSS

4A6C4036A3000A

4A6C4042A3000A

4A6C4048A3000A

4A6C4060A3000A

446600VV MMOODDEELLSS

4A6C4036A4000A

4A6C4042A4000A

4A6C4048A4000A

4A6C4060A4000A

NNoottee:: “Graphics in this document are for representation

only. Actual model may differ in appearance.”

Installer’s Guide

SAFETY SECTION

IImmppoorrttaanntt — This document contains a wiring diagram

and service information. This is customer property and

is to remain with this unit. Please return to service

information pack upon completion of work.

WWAARRNNIINNGG

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WWAARRNNIINNGG

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WWAARRNNIINNGG

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11-BC41D1-1A-EN 3

Unit Location Considerations . . . . . . . . . . . . . . . 4

............................................. 5

Coastal Considerations. . . . . . . . . . . . . . . . . . . . 5

Unit Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Setting Up the Unit . . . . . . . . . . . . . . . . . . . . . . . 6

Refrigerant Line Considerations. . . . . . . . . . . . 7

Refrigerant Line Brazing . . . . . . . . . . . . . . . . . . . 10

Refrigerant Line Leak Check . . . . . . . . . . . . . . . 12

Refrigerant Line and Indoor Coil

Evacuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Service Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Electrical — Low Voltage . . . . . . . . . . . . . . . . . . 14

Electrical — High Voltage . . . . . . . . . . . . . . . . . . 16

System Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

System Charge Adjustment . . . . . . . . . . . . . . 18

Subcooling Charging in Cooling

between 55° F and 120° OD Ambient . . . . . . 19

............................................20

Charging the Unit. . . . . . . . . . . . . . . . . . . . . . . . . . 21

Refrigerant Charging Chart . . . . . . . . . . . . . . . . 23

Checkout Procedures . . . . . . . . . . . . . . . . . . . . . . 24

Table of Contents

411-BC41D1-1A-EN

Unit Location Considerations

Table 1. Unit Dimensions and Weight

Models H x D x W (in) Weight * (lb)

4A6C4036A3 29 x 34 x 37 208

4A6C4042A3 29 x 34 x 37 208

4A6C4048A3 33 x 34 x 37 261

4A6C4060A3 45 x 34 x 37 248

4A6C4036A4 29 x 34 x 37 216

4A6C4042A4 29 x 34 x 37 208

4A6C4048A4 33 x 34 x 37 261

4A6C4060A4 45 x 34 x 37 248

* Weight values are estimated (uncrated).

• When mounting the outdoor unit on a roof, be sure the roof will

support the unit’s weight.

• Properly selected isolation is recommended to alleviate sound or

vibration transmission to the building structure.

11-BC41D1-1A-EN 5

Table 2. Suggested Locations for Best Reliability

• Ensure the top discharge area is unrestricted for at least 5

feet above the unit.

• Provide at least 3 feet clearance in front of the control box

(access panels) and any other side requiring service.

• Do not locate close to bedrooms as operational sounds may

be objectionable.

• Avoid locations near windows and similar areas where

condensation and freezing defrost vapor can annoy a

customer.

• Position the outdoor unit a minimum of 12” from any wall or

surrounding shrubbery to ensure adequate airflow.

• Outdoor unit location must be far enough away from any

structure to prevent excess roof runoff water or icicles from

falling directly on the unit.

• Position the outdoor unit a minimum of 12” from any wall or

surrounding shrubbery to ensure adequate airflow.

• Outdoor unit location must be far enough away from any

structure to prevent excess roof runoff water or icicles from

falling directly on the unit.

Table 3. Cold Climate Considerations (Heat Pump Only)

Note: It is recommended that these precautions be taken for

units being installed in areas where snow accumulation and

prolonged below-freezing temperatures occur.

• Units should be elevated 3–12 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. Ensure that drain holes in unit base pan

are not obstructed, preventing drainage of defrost water.

• 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.

Coastal Considerations

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 installation time.

611-BC41D1-1A-EN

Unit Preparation

1. Check for damage and report promptly to the carrier

any damage found to the unit.

1. To remove the unit from the pallet, remove tabs by

cutting with a sharp tool.

Setting Up the Unit

Table 4. Pad Installation

When installing the unit on a support pad, such as a concrete slab,

consider the following:

• The pad should be at least 1” larger than the unit on all sides.

• The pad must be separate from any structure.

• The pad must be level.

• The pad should be high enough above grade to allow for drainage.

• The pad location must comply with National, State, and Local

codes.

11-BC41D1-1A-EN 7

Refrigerant Line Considerations

Table 5. Refrigerant Line and Service Valve Connection Sizes

Line Sizes Service Valve Connection Sizes

Model Vapor Line Liquid Line Vapor Line Connection Liquid Line Connection

4A6C4036A3 7/8 3/8 7/8 3/8

4A6C4042A3 7/8 3/8 7/8 3/8

4A6C4048A3 7/8 3/8 7/8 3/8

4A6C4060A3 1–1/8 3/8 7/8 3/8

4A6C4036A4 7/8 3/8 7/8 3/8

4A6C4042A4 7/8 3/8 7/8 3/8

4A6C4048A4 7/8 3/8 7/8 3/8

4A6C4060A4 1–1/8 3/8 7/8 3/8

Table 6. Factory Charge

These outdoor condensing units are factory charged with the system charge required for the outdoor condensing unit, fifteen (15) feet of tested

connecting line, and the smallest indoor evaporative coil match. See unit nameplate. If connecting line length exceeds fifteen (15) feet

and/or a larger indoor evaporative coil is installed, then final refrigerant charge adjustment is necessary. Use the Subcooling

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.

Table 7. Required Refrigerant Line Length

Determine required line length and lift. You will need this to determine

the subcooling charging corrections later in the installation process.

Total Line Length = ___________________________Ft.

Total Vertical Change (lift) = ____________________Ft.

UUnniitt PPrreeppaarraattiioonn

811-BC41D1-1A-EN

Table 8. Refrigerant Line Insulation

Important: The Vapor Line must always be insulated. DO NOT allow

the Liquid Line and Vapor Line to come in direct (metal to

metal) contact.

Note: The gas line must always be insulated. Insulating the liquid line

through attic spaces may benefit system performance by

minimizing heat gain in the liquid line.

Table 9. Reuse Existing Refrigerant Lines

CCAAUUTTIIOONN

RREEFFRRIIGGEERRAANNTT!!

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IIff uussiinngg eexxiissttiinngg rreeffrriiggeerraanntt lliinneess mmaakkee cceerrttaaiinn tthhaatt

aallll jjooiinnttss aarree bbrraazzeedd,, nnoott ssoollddeerreedd..

For retrofit applications, where the existing indoor evaporator coil

and/or refrigerant lines will be used, the following precautions should

be taken.

• Ensure that the indoor evaporator coil and refrigerant lines are

the correct size.

• Ensure that the refrigerant lines are free of leaks, acid, and oil.

Important: For more information, see publication number SS-

APG006–EN

Table 10. Refrigerant Line Routing Precautions

Important: Comply with National, State, and Local Codes when isolating line sets from joists, rafters, walls, or other structural elements.

Important: Take precautions to prevent noise within the building structure due to vibration transmission from the refrigerant lines.

For Example:

• When the refrigerant lines must be fastened to floor joists or other framing in a structure, use isolation type hangers.

• Isolation hangers should also be used when refrigerant lines are run in stud spaces or enclosed ceilings.

• Where the refrigerant lines run through a wall or sill, they should be insulated and isolated.

• Isolate the lines from all duct work.

• Minimize the number of 90°turns.

UUnniitt PPrreeppaarraattiioonn

11-BC41D1-1A-EN 9

Table 11. Isolation From Joist/Rafter

Secure Vapor Line from joists using isolators every 8 ft. Secure Liquid Line directly to insulated Vapor Line using tape, wire, or other appropriate

method every 8 ft.

Table 12. Isolation In Wall Spaces

Secure Vapor Line from joists using isolators every 8 ft. Secure Liquid Line directly to insulated Vapor Line using tape, wire, or other appropriate

method every 8 ft.

Table 13. Isolation Through Wall

UUnniitt PPrreeppaarraattiioonn

10 11-BC41D1-1A-EN

Refrigerant Line Brazing

Table 14. Braze the Refrigerant Lines

1. Remove caps or plugs. Use a deburring tool to debur the pipe

ends. Clean both internal and external surfaces of the tubing

using an emery cloth.

1. Remove the pressure tap cap and valve core from each service

valves.

1. Purge the refrigerant lines and indoor coil with dry nitrogen.

11-BC41D1-1A-EN 11

Table 14. Braze the Refrigerant Lines (continued)

1. Wrap a wet rag around the valve body to avoid heat damage and

continue the dry nitrogen purge.

2. Braze the refrigerant lines to the service valves.

a. For Units shipped with a field-installed external drier, check

liquid line filter drier’s directional flow arrow to confirm

correct direction of refrigeration flow (away from outdoor unit

and toward evaporator coil) as illustrated. Braze the filter

drier to the Liquid Line.

3. Continue the dry nitrogen purge. Do not remove the wet rag until

all brazing is completed.

Important: Remove the wet rag before stopping the dry nitrogen

purge.

Note: Precautions should be taken to avoid heat damage to base pan

during brazing. It is recommended to keep the flame directly

off of the base pan.

1. Replace the pressure tap valve cores after the service valves have

cooled.

RReeffrriiggeerraanntt LLiinnee BBrraazziinngg

12 11-BC41D1-1A-EN

Refrigerant Line Leak Check

Table 15. Check for Leaks

1. Pressurize the refrigerant lines and evaporator coil to 150 PSIG

using dry nitrogen.

1. Check for leaks by using a soapy solution at each brazed location.

Note: Remove nitrogen pressure and repair any leaks before

continuing.

Refrigerant Line and Indoor Coil Evacuation

IImmppoorrttaanntt:: Do not open the service valves until the

refrigerant lines and indoor coil leak check

and evacuation are complete.

1. Evacuate until the micron gauge reads no higher than

350 microns, then close off the valve to the vacuum

pump.

0350

Microns

ON OFF

1. Observe the micron gauge. Evacuation is complete if

the micron gauge does not rise above 500 microns in

one (1) minute.

2. When evacuation is complete, blank off the vacuum

pump and micron gauge, and close the valves on the

manifold gauge set.

1 MIN.

11-BC41D1-1A-EN 13

Service Valves

Table 16. Open the Gas Service Valve

Important: Leak check and evacuation must be completed before

opening the service valves.

Note: Do not vent refrigerant gases into the atmosphere.

1. Remove valve stem cap.

2. Using a wrench, turn valve stem 1/4 turn counterclockwise to

the fully open position.

3. Replace the valve stem cap to prevent leaks. Tighten finger

tight plus an additional 1/6 turn.

Table 17. Open the Liquid Service Valve