Bryant 619E instruction

ENGINEER'S SPECIFICATION GUIDE Ð OUTDOOR UNITS (Models 538A, 538C, 538D, and 538S )

GENERAL: Furnish and install a Model 538A, 538C, 538D, or 538S air-to-air outdoor unit in combination with a fan coil unit in the location and manner shown on the plan drawings. The unit shall be designed and tested for use with Refrigerant R-22 and shall be equipped with refrigerant line ®ttings which permit sweat or ¯are connections.

Nominal system electrical characteristics shall be v,

single phase, 60 Hz. Each unit shall be capable of satisfactory

operation within voltage range of			v to	v.
MAXIMUM DIMENSIONS: Outdoor unit Ð width					in.,
depth	in., height	inches.

COOLING CAPACITY: Total system cooling capacity shall not

be less than					Btuh with indoor air quantity of
	cfm at				F wet bulb temperature of air entering

outdoor unit. Sensible heat capacity shall not be less than


	Btuh with	F dry bulb temperature. Compres-
sor power input shall be			v or less at these conditions.

HEATING CAPACITY (Heat Pump Systems Only): Total heating


capacity shall be			Btuh or greater (integrated rating)
when rated at		F dry-bulb outdoor ambient with cfm
and	F entering (heating) coil. The equipment must
have a minimum HSPF of				. Compressor shall be ca-

pable of operation in heating duty down to −20 F outdoor am- bient air temperature (with accessory low-ambient kit). Unit shall be capable of simultaneous heating duty and defrost cycle operation.

OUTDOOR SECTION: The coil shall be constructed of alumi- num plate ®ns mechanically bonded to copper tubing with all


joints brazed. Coil shall be		rows deep with a nominal
®n spacing of	®ns per in., and shall have a face area of
not less than	square ft.

Outdoor unit shall contain a fully hermetic compressor with a crankcase heater (non-scroll units), oil system, operating oil charge, internal motor protection, and spring isolation. Outdoor fans shall be direct-drive propeller type, shall discharge air hori- zontally, shall be totally enclosed, and shall have permanently lubricated sleeve bearings.

CONTROL CIRCUIT: Controls and protective devices shall in- clude time-delay restart, automatic restart on power failure, 3-pole contactors (3 phase units), safety lockout if any safety is open, high-pressure and loss-of-pressure switches, automatic outdoor-fan motor protection, start capacitor and relay (single- phase units without scroll compressors), system diagnostics and high condensing temperature protection , compressor mo- tor current and temperature overload protection, high pressure relief, and outdoor fan failure protection. A 24-v transformer shall be factory installed and wired on outdoor units for external control circuit (size 018 and 024 only).

APPROVALS: Unit shall be constructed in accordance with ASHRAE 15 (latest revision), NEC, and CSA. Unit shall carry the UL listing label.

FIELD-INSTALLED ACCESSORIES: Low-ambient kit (538A, 538C, 538D), liquid solenoid valve, wall mount kit, crankcase heater (reciprocating-compressor units only) and winter start kit (538C, 538S).