Bryant 663C → II. Install on a SOLID, Level Mounting PAD, → III. Clearance Requirements

NOTE: Avoid contact between tubing and structure

OUTDOOR WALL INDOOR WALL

CAULK

LIQUID TUBE

VAPOR TUBE

INSULATION

THROUGH THE WALL

	JOIST
HANGER STRAP
(AROUND VAPOR	INSULATION
TUBE ONLY)
	VAPOR TUBE

1″ MIN.

LIQUID TUBE

SUSPENSION

A94028

Fig. 2ÐConnecting Tubing Installation

→II. 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. 3 to determine base pan size and knockout hole location.

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 above 5 mph may require wind baffles to achieve adequate defrost. Consult Low-Ambient Guideline for wind baffle construction.

NOTE: Unit must be level to within ± 2Ê (± 3/8 in./ft) per compressor manufacturer specifications.

→III. CLEARANCE REQUIREMENTS

When installing, allow sufficient space for airflow clearance, wiring, refrigerant piping, and service. Allow 30-in. clearance to service end of unit and 48 in. above unit. For proper airflow, a 6-in. clearance on 1 side of unit and 12 in. on all remaining sides must be maintained. Maintain a distance of 24 in. 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. above roof surface.

IV. OPERATING AMBIENTS

The minimum outdoor operating ambient in cooling mode is 55ÊF, and the maximum outdoor operating ambient in cooling mode is 125ÊF. The maximum outdoor operating ambient in heating mode is 66ÊF.

Ð2Ð

C

					3⁄8″D. (9.53) TIEDOWN
	A				KNOCKOUTS (2) PLACES￿
					￿
			B				A94199
		DIMENSIONS (IN.)
UNIT	MINIMUM			TIEDOWN KNOCKOUT LOCATIONS
	MOUNTING PAD
SIZE					A	B	C
	DIMENSIONS
018	22-1/2 X 22-1/2			3-11/16		18-1/8	14-3/8
024±060	30 X 30			6-1/2		23-1/2	20

Fig. 3ÐMounting Unit to Pad

V. ELEVATE UNIT

CAUTION: Accumulation of water and ice in base pan may cause equipment damage.

In areas where prolonged freezing temperatures are encountered, elevate unit per local climate and code requirements to provide clearance above estimated snowfall level and ensure adequate drainage of unit.

VI. REMOVE INDOOR CHECK-FLO-RATER® PISTON AND INSTALL TXV

CAUTION: For proper unit operation and reliability, units must be installed with field-supplied hard shutoff TXV. Do not install with evaporator coils having capil- lary tube metering devices or pistons.

For TXV kit part number and charging instructions, refer to TXV label in outdoor unit. If indoor unit (fan coil) comes factory equipped with a bi-flow hard shutoff TXV, no TXV change is required.

If TXV installation is required, remove existing Check-Flo-Rater from indoor coil. Refer to Fig. 4 and 5 and install TXV kit as follows:

1.Install suction tube adapter.

2.Install liquid flare-to-sweat adapter.

3.Connect external equalizer tube to fitting on suction tube adapter.

4.Position sensing bulb on horizontal portion of suction tube adapter. Secure using supplied hardware.

5.Insulate bulb after installation. (See Fig. 5.)

6.Leak check all connections.