58
GUIDE SPECIFICATIONS
GENERAL
AIR--COOLED, SPLIT--SYSTEM HEAT PUMP
286BNC
2 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, forward--swept blade
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
AHRI Standard 240.
— Unit will be certified for capacity and efficiency, and
listed in the latest AHRI directory.
— Unit construction will comply with latest edition of
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 are pressure tested and the
outdoor units are leak tested.
— 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
Puron
r
(R--410A) refrigerant, and special features
required prior to field start--up.
Unit Cabinet
— Unit cabinet, including louvered coil guard, will be
constructed of galvanized steel, bonderized, and coated
with a powder coat paint to both sides of the sheet metal
for enhanced sea coast corrosion resistance.
Fans
— Condenser fan will be direct--drive propeller type,
forward swept blade, discharging air upward.
— Condenser fan motors will be totally enclosed, 1--phase
type with class B insulation and permanently lubricated.
— Shafts will be corrosion resistant.
— Fan blades will be statically and dynamically balanced.
— Condenser fan openings will be equipped with coated
steel wire safety guards.
Compressor
— Compressor will be hermetically sealed.
— Compressor will be mounted on rubber vibration
isolators.
— Compressor will be covered with a sound absorbing
blanket.
Condenser Coil
— Condenser coil will be air cooled.
— Coil will be constructed of aluminum fins with epoxy
phenolic thermoset coating specially designed to resist
coastal corrosion.
Fins are mechanically bonded to
copper tubes which are then cleaned, dehydrated, and
sealed.
— TuffCoat coating -- Aluminum fin material is pre--coated
on both sides with a corrosion protective epoxy phenolic
coating.
Refrigeration Components
— Refrigeration circuit components will include liquid--line
front--seating shutoff valve with sweat connections,
vapor--line front--seating shutoff valve with sweat
connections, system charge of Puron
r
(R--410A)
refrigerant, POE compressor oil, accumulator, and
reversing valve.
— Unit will be equipped with high--pressure switch, loss--
of--charge switch, and filter drier for Puron
r
refrigerant.
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.
286B
N
C
Содержание 286BNC
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