Bryant 127A Installation, Check Equipment and Job Site, Install on a Solid, Level Mounting Pad

127A

INSTALLATION

Check Equipment and Job Site

UNPACK UNIT

Move to final location. Remove carton taking care not to damage unit.

Inspect Equipment

File claim with shipping company prior to installation if shipment is damaged or incomplete. Locate unit rating plate on unit corner panel. It contains information needed to properly install unit. Check rating plate to be sure unit matches job specifications.

Install on a Solid, Level Mounting Pad

If conditions or local codes require the unit be attached to pad, tie down bolts should be used and fastened through knockouts provided in unit base pan. Refer to unit mounting pattern in Fig. 2 to determine base pan size and knockout hole location.

For hurricane tie downs, contact local distributor for details and PE (Professional Engineer) certification, if required by local authorities.

On rooftop applications, mount on level platform or frame. Place unit above a load-bearing wall and isolate unit and tubing set from structure. Arrange supporting members to adequately support unit and minimize transmission of vibration to building. Consult local codes governing rooftop applications.

Roof mounted units exposed to winds may require wind baffles. Consult the Application Guideline and Service Manual - Residential Split System Air Conditioners and Heat Pumps for wind baffle construction.

NOTE: Unit must be level to within ±2_ (±3/8 in./ft,±9.5 mm/m.) per compressor manufacturer specifications.

Clearance Requirements

When installing, allow sufficient space for airflow clearance, wiring, refrigerant piping, and service. Allow 24 in. (609.6 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 1 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. Position so water, snow, or ice from roof or eaves cannot fall directly on unit.

On rooftop applications, locate unit at least 6 in. (152.4 mm) above roof surface.

Operating Ambient

The minimum outdoor operating ambient in cooling mode is 55_F (12.78_C), and the maximum outdoor operating ambient in cooling mode is 125_F (51.67_C) when operating voltage is 230v. For 208v applications, the maximum outdoor ambient is 120_F.

NOTE: Units operating at high stage operation, 208v (or below) line voltage and at an outdoor ambient 120_F (or greater), may experience compressor trip.

NOTE: This product is not approved for low ambient cooling at this time, and no low ambient kit is available.

Make Piping Connections

!WARNING

PERSONAL INJURY AND ENVIRONMENTAL HAZARD

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

Relieve pressure and recover all refrigerant before system repair or final unit disposal. Use all service ports and open all flow-control devices, including solenoid valves.

Federal regulations require that you do not vent refrigerant to the atmosphere. Recover during system repair or final unit disposal.

!CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

If ANY refrigerant tubing is buried, provide a 6-in (152.4

mm)vertical rise at service valve. Refrigerant tubing lengths up to 36-in (914.4 mm) may be buried without further special consideration. Do not bury lines more than 36-in. (914.4 mm).

3/8---in. (9.53 mm) Dia. Tiedown Knockouts in Basepan(2) Places

View From Top

UNIT BASE PAN	TIEDOWN KNOCKOUT LOCATIONS in. (mm)
Dimension in. (mm)	A	B	C
26 X 26	9–1/8 (231.8)	4–7/16 (112.7)	21–1/4 (539.8)
(660 X 660)
31–1/2 X 31–1/2	9–1/8 (231.8)	6–9/16 (166.7)	24–11/16 (627.1)
(800 X 800)
35 X 35	9–1/8 (231.8)	6–9/16 (166.7)	28–7/16 (722.3)
(889 X 889)
			A05177

Fig. 2 - Tiedown Knockout Locations

Outdoor units may be connected to indoor section using accessory tubing package or field-supplied refrigerant grade tubing of correct size and condition. Rated tubing diameters shown in Table 1 are recommended up to 80 ft. (24.38 m). See Product Data for acceptable alternate vapor diameters and associated capacity losses. For tubing requirements beyond 80 ft. (24.38 m), substantial capacity and performance losses can occur. Following the recommendations in the Longline Guideline will reduce these losses. Refer to Table 1 for field tubing diameters. Refer to Table 2 for accessory requirements.

There are no buried-line applications greater than 36-in. (914.4 mm) allowed.

If refrigerant tubes or indoor coil are exposed to atmosphere, they must be evacuated to 500 microns to eliminate contamination and moisture in the system.

2