Carrier 25HCR3C Heat Pump User Manual


 
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GUIDE SPECIFICATIONS
GENERAL
AIR--COOLED, S PLIT-- SYSTEM HEAT PUMP
25HCR3C
1.5 TO 5 NOMINAL TONS
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.
Unit will be certified for capacity and efficiency, 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 217
psig and pressure tested at 450 psig.
Unit constructed in ISO9001 approved facility.
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 is 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 steel wire
safety guards.
Defrost control board which incorporates defrost relay,
defrost timer and low voltage terminal board.
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 finstock with a
resin --based epoxy--phenolic thermoset coating, factory
applied by precoating and baking on both sides. The
fins are 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, vapor-- line shutoff
valve with sweat connections, system charge of
refrigerant, compressor oil, accumulator, loss of charge
switch, and r eversing valve.
Operating Characteristics
The capacity of the unit will meet or exceed _____ Btuh
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
or greater at conditions of _____ CFM entering air
temperature at the evaporator at _____ _F/_C wet bulb
and _____ _F/_C dry bulb, and air entering the unit at
_____ _F/_C.
The system will have a SEER of _____ Btuh/watt or
greater at DOE conditions.
Electrical Requirements
Nominal unit electrical characteristics will be _____ v,
single phase, 60 hz. 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.
25HCR3C