GUIDE SPECIFICATIONS
PACKAGED GAS HEATING/ELECTRIC COOLING UNITS CONSTANT VOLUME APPLICATION
HVAC GUIDE SPECIFICATIONS
SIZE RANGE: 2 TO 5 TONS, NOMINAL COOLING 40,000 TO 130,000 BTUH,
NOMINAL HEATING INPUT
BRYANT MODEL NUMBER: 583B
PART 1 — GENERAL
1.01 SYSTEM DESCRIPTION
Outdoor rooftop mounted, gas heating/electric cooling unit utilizing a scroll compressor for cooling duty. Unit shall discharge supply air vertically or horizontally as shown on contract drawings. Condenser fan/coil section shall have a
1.02QUALITY ASSURANCE
A.Unit shall be rated in accordance with ARI Standards
B.Unit shall be designed in accordance with UL Standard 1995.
C.Unit shall be manufactured in a facility registered to ISO 9001 manufacturing quality standard.
D.Unit shall be UL listed and certified under Canadian Standards as a total package for safety requirements.
E.Roof curb shall be designed to conform to NRCA Standards.
F.Insulation and adhesives shall meet NFPA 90A requirements for flame spread and smoke generation.
G.Cabinet insulation shall meet ASHRAE Standard 62P.
1.03DELIVERY, STORAGE AND HANDLING
Unit shall be stored and handled per manufacturer’s recommendations.
PART 2 — PRODUCTS
2.01EQUIPMENT
A.General:
B.Unit Cabinet:
1.Unit Cabinet shall be constructed of phosphated,
2.Normal service shall be through a single removable cabinet panel.
3.The unit shall be constructed on a rust proof basepan that has an externally trapped, integrated sloped drain pan.
4.Evaporator fan compartment top surface shall be insulated with a minimum
5.Unit shall have a
1.The evaporator fan shall be
as shown on equipment drawings or factory optional variable speed motor and control.
2.Fan wheel shall be made from steel, and shall be
3.Condenser fan shall be direct drive propeller type with aluminum blades riveted to corrosion resistant steel spiders, be dynamically balanced, and discharge air vertically.
D.Compressor:
1.Fully hermetic compressors with
2.Scroll compressors shall be standard on all units.
E.Coils:
Evaporator and condenser coils shall have aluminum plate fins mechanically bonded to seamless copper tubes with all joints brazed. (Copper/copper and vinyl- coated construction available as option). Tube sheet openings shall be belled to prevent tube wear.
F.Heating Section:
1.
2.
3.The heat exchangers shall be constructed of aluminized steel for corrosion resistance.
4.Burners shall be of the
5.All gas piping and electric power shall enter the unit cabinet at a single location.
G.Refrigerant Components:
Refrigerant expansion shall be of the fixed orifice type.
H.Filters:
Filter section shall consist of
I.Controls and Safeties:
1.Unit controls shall be complete with a self- contained low voltage control circuit.
2.Compressors shall incorporate a
3.Unit shall provide high and
J.Operating Characteristics:
1.Unit shall be capable of starting and running at 125°F ambient outdoor temperature exceeding maximum load criteria of ARI Standard 210.
2.Compressor with standard controls shall be capa- ble of operation down to 40 F ambient outdoor tem- perature. (55°F with ICM FIOP)
3.Units shall be provided with fan time delay to pre- vent cold air delivery before the heat exchanger warms up.
4.Unit shall be provided with
5.On ICM FIOP fan off delay for cooling is selected on Easy Select™ Board.