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 to ISO
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
SPuron (R--410A) HFC refrigerant
SEER’s up to 10.8
SIEER’s up to 11.5
SCOP’supto3.3
SASHRAE 90.1 energy compliant
SRated in accordance with AHRI Standard 340/360
SDesigned in accordance with Underwriters’ Laboratories
Standard 1995
STwo--stage cooling capacity control on all models
SNon--corrosive composite sloping design; side or center drain
condensate pan. Meets ASHRAE Standard 62
SCooling operating range from 30_Fupto115_F
(--1_Cupto46_C).
SDedicated vertical nd horizontal airflow models available,
ordered as factory option. No special kits required
STwo--inch disposable return air filters
SThru--the--bottom power entry capability
SSingle point electric connections on field--installed electric heat
units
S24--volt control circuit protected with resettable circuit breaker
and 75--VA transformer
SBelt drive, constant torque, permanently lubricated
evaporator--fan motor on all size units.
STotally enclosed condenser motors with permanently lubricated
bearings
SState--of--the--art defrost control board, easily configured for
defrost cycles of 30, 60, 90, or 120 minutes.
SCentralized Terminal Board for component and unit wiring
connections.
SLoss of Charge, High--Pressure, and Freeze Protection switches
SFull perimeter base rail with built--in rigging adapters and fork
truck slots.
Cabinet
SAccess panels with easy grip handles
SInnovative, easy starting, no strip screw features on unit access
panels.
SPre--painted exterior panels and primer--coated interior panels
tested to 500 hours salt spray protection
SFully insulated cabinet
STool--less filter access door
Refrigerant System
SAcutroltrefrigerant metering system
SLiquid line filter drier
SScroll compressors with internal line--break overload protection
SIndoor and outdoor coils constructed of aluminum fins
mechanically bonded to seamless copper tubes.
SRemovable gauge line plugs for reading refrigerant pressure
with unit panels in place
SFour--way reversing valve operation
SSuction Line Accumulator standard -- prevents excessive liquid
flood back of refrigerant to the compressor even during the start
of the defrost cycle.
Standard Parts Warranty
S5--year electric heater (field--installed)
S5--year compressor
S1--year parts
