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548J***D
SINGLE PACKAGE ROOFTOP
HIGH--EFFICIENCY HEAT PUMP UNITS
WITH FIELD--INSTALLED ELECTRIC HEAT
SIZES 17 & 24 WITH PURONR (R--410A) REFRIGERANT
Submittal Data
Certified t o I SO
Use of the AHRI Certified
TM Mark indicates a
manufacturer’s
participation in the
program For verification
of certification for individual
products, go to
www.ahridirectory.org.
9001:2000
DESCRIPTION
548J***D units are one--piece, two--stage heat pump units
that are low profile, prewired, tested and charged at the
factory. These are intended for installation on a roof curb
accessory (ordered separately), or for slab mounting (for
horizontal duct connections). Units are designed to accept
field--installed electric heaters. Units may be ordered with
various factory--installed options. Field--installed accessories
are also available.
STANDARD FEATURES
Base Unit
S Puron (R--410A) HFC refrigerant
S EER’s up to 10.8
S IEER’s up to 11.5
S COP’supto3.3
S ASHRAE 90.1 energy compliant
S Rated in accordance with AHRI Standard 340/360
S Designed in accordance with Underwriters’ Laboratories
Standard 1995
S Two--stage cooling capacity control on all models
S Non--corrosive composite sloping design; side or center drain
condensate pan. Meets ASHRAE Standard 62
S Cooling operating range from 30_Fupto115_F
(--1_Cupto46_C).
S Dedicated vertical nd horizontal airflow models available,
ordered as factory option. No special kits required
S Two--inch disposable return air filters
S Thru--the--bottom power entry capability
S Single point electric connections on field--installed electric heat
units
S 24--volt control circuit protected with resettable circuit breaker
and 75--VA transformer
S Belt drive, constant torque, permanently lubricated
evaporator--fan motor on all size units.
S Totally enclosed condenser motors with permanently lubricated
bearings
S State--of--the--art defrost control board, easily configured for
defrost cycles of 30, 60, 90, or 120 minutes.
S Centralized Terminal Board for component and unit wiring
connections.
S Loss of Charge, High--Pressure, and Freeze Protection switches
S Full perimeter base rail with built--in rigging adapters and fork
truck slots.
Cabinet
S Access panels with easy grip handles
S Innovative, easy starting, no strip screw features on unit access
panels.
S Pre--painted exterior panels and primer--coated interior panels
tested to 500 hours salt spray protection
S Fully insulated cabinet
S Tool--less filter access door
Refrigerant System
S Acutrolt refrigerant metering system
S Liquid line filter drier
S Scroll compressors with internal line--break overload protection
S Indoor and outdoor coils constructed of aluminum fins
mechanically bonded to seamless copper tubes.
S Removable gauge line plugs for reading refrigerant pressure
with unit panels in place
S Four--way reversing valve operation
S Suction Line Accumulator standard -- prevents excessive liquid
flood back of refrigerant to the compressor even during the start
of the defrost cycle.
Standard Parts Warranty
S 5--year electric heater (field--installed)
S 5--year compressor
S 1--year parts