21
Guide specifications
Air-Cooled, Split-System
Heat Pump
38YCA
1-1/2 To 5 Tons Nominal
GENERAL
System Description
Outdoor-mounted, air-cooled, split-system heat pump
unit suitable for ground or rooftop installation. Unit
consists of a hermetic compressor, an air-cooled coil,
propeller-type condenser fan, and a control box. Unit will
discharge supply air upward as shown on contract
drawings. Unit will be used in a refrigeration circuit to
match up to a packaged fan coil or coil unit.
Quality Assurance
Unit will be rated in accordance with the latest edition
of ARI Standard 240 and 270.
Unit will be certified for capacity, efficiency, and sound
and listed in the latest ARI directory.
Unit construction will comply with latest edition of
ANSI/ASHRAE and with NEC.
Unit will be constructed in accordance with UL
standards and will carry the UL label of approval. Unit will
have C-UL approval.
Unit cabinet will be capable of withstanding Federal
Test Method Standard No. 141 (Method 6061) 500-hr
salt spray test.
Air-cooled condenser coils will be leak tested at
150 psig and pressure tested at 300 psig.
Delivery, Storage, and Handling
Unit will be shipped as single package only and is stored
and handled per unit manufacturer’s recommendations.
Warranty (for inclusion by specifying engineer)
U.S. and Canada only.
PRODUCTS
Equipment
Factory-assembled, single piece, air-cooled heat pump
unit. Contained within the unit enclosure will be all factory
wiring, piping, controls, compressor, refrigerant charge
(R-22), and special features required prior to field start-up.
Unit Cabinet
Unit cabinet will be constructed of galvanized steel,
bonderized, and coated with a powder coat paint.
Fans
Condenser fan will be direct-drive propeller type,
discharging air upward.
Condenser fan motors will be totally enclosed, 1-phase
type with class B insulation and permanently lubricated
bearings.
Shafts will be corrosion resistant.
Fan blades will be statically and dynamically balanced.
Condenser fan openings will be equipped with
PVC-coated steel wire safety guards.
Compressor
Compressor will be hermetically sealed.
Compressor will be mounted on rubber vibration
isolators.
Condenser Coil
Condenser coil will be air cooled.
Coil will be constructed of aluminum fins mechanically
bonded to copper tubes which are then cleaned,
dehydrated, and sealed.
Refrigeration Components
Refrigeration circuit components will include liquid line
shut-off valve with sweat connections, suction shut-off
valves with sweat connections, system charge of
refrigerant R-22, compressor oil, accumulator, and
reversing valve.
Operating Characteristics
The capacity of the unit will meet or exceed ____ Btuh
at a suction temperature of ____ F. The power
consumption at full load will not exceed ____ kw.
Combination of the unit and the evaporator or fan coil
unit will have a total net cooling capacity of ____ Btuh or
greater at conditions of ____ CFM entering air
temperature at the evaporator at ____ F wet bulb and
____ F dry bulb, and air entering the unit at ____ F.
The system will have an SEER of ____ Btuh/watt or
greater at DOE conditions.
Electrical Requirements
Nominal unit electrical characteristics will be ____ v,
1 phase, 60 hertz. The unit will be capable of satisfactory
operation within voltage limits of ____ v to ____ v.
Unit electrical power will be single point connection.
Control circuit will be 24v.
Special Features
Refer to section of this literature identifying accessories
and descriptions for specific features and available
enhancements.
