18
Guide specifications
Air-Cooled, Split-System
Heat Pump
38YCB
2 To 5 Tons Nominal
(7 To 17.5 Kw)
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 shall be manufactured in a facility registered to ISO9001/
BS5750 Part II, International Standard for Quality Systems.
Unit will be rated in accordance with the latest edition of ARI
Standard 240.
Unit construction will comply with latest edition of ANSI/
ASHRAE and with NEC (U.S.A. Standard).
Unit will be constructed in accordance with UL standards.
Unit cabinet will be capable of withstanding Federal Test
Method Standard No. 141 (Method 6061) 500-hr salt spray test
(U.S.A. Standard).
Air-cooled condenser coils will be leak tested at
150 psig ( 1034 KPa) and pressure tested at 300 psig
(2068 KPa).
Delivery, Storage, and Handling
Unit will be shipped as single package only and is stored and
handled per unit manufacturer’s recommendations.
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
shutoff valve with sweat connections, suction shutoff 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
( ____ kw) at a suction temperature of ____ F ( ____ C). 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 ( ____ kw) or
greater at conditions of ____ CFM ( ____ L/S) entering air
temperature at the evaporator at ____ F ( ____ C) wet bulb
and ____ F ( ____ C) dry bulb, and air entering the unit
at ____ F ( ____ C).
Electrical Requirements
Nominal unit electrical characteristics will be ____ v,
1 phase, 50 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.
Summary of Contents for 38YCB
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