Bryant 548J*D Series, Руководство по обслуживанию

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548J***D
SINGLE PACKAGE ROOFTOP
HEAT PUMP UNITS
WITH FIELD--INSTALLED ELECTRIC HEAT
SIZES 17 & 24 WITH PURON
R
(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
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 with single speed indoor fan motor
— up to 12.0 with 2--speed/VFD indoor fan motor
S
COP’s up to 3.3
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
Listed by ETL and ETL--Canada
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
_
F up to 115
_
F
(--1
_
C up to 46
_
C).
S
Dedicated vertical and 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
Central 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
Precision sized TXV refrigerant metering devices
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.