1
50EZ ---A
Comfortt Single ---Packaged Heat Pump System with PuronR
(R ---410A) Refrigerant
S i n g l e --- A n d T h r e e --- P h a s e U n i t s
2to5NominalTons(Sizes24---60)
Product Data
A09034
Fig. 1 -- Unit 50EZ --A
Single--Packaged Products with Energy-- Saving Features and
PuronR refrigerant.
S Up to 13.5 SEER
S Up to 7.7 HSPF
S Up to 11.5 EER at 95_FOD
S Factory--Installed TXV
S Multi--Speed High Efficiency DC Blower--Standard
S Dehumidification Feature
FEATURES/BENEFITS
One--piece Heat Pump unit with optional electric heater, low
installation cost, dependable performance and easy maintenance.
Efficient operation High--efficiency design with SEERs
(Seasonal Energy Efficiency Ratio) of up to 13.5.
Puron Environmentally Sound Refrigerant is Carrier’s unique
refrigerant designed to help protect the environment. Puron is an
HFC refrigerant which does not contain chlorine that can harm the
ozone layer . Puron refrigerant is in service in millions of systems,
proving highly reliable, environmentally sound performance.
Easy Installation
Factory--assembled package is a compact, fully self--contained,
heat pump unit that is prewired, pre--piped, and pre-- charged for
minimum installation expense. These units are available in a
variety of standard capacity ranges with voltage options to meet
residential and light commercial requirements. Units are
lightweight and install easily on a rooftop or at ground level. The
high tech composite base eliminates rust problems associated with
ground level applications.
Innovative Unit Base Design
On the inside a high--tech composite material will not rust and
incorporates a sloped drain pan which improves drainage and helps
inhibit mold, algae and bacterial growth. On the outside metal base
rails provide added stability as well as easier handling and rigging.
Durable, dependable components Compressors are designed
for high efficiency. Each compressor is hermetically sealed against
contamination to help promote longer life and dependable
operation. Each compressor also has vibration isolation to provide
quieter operation. All compressors have internal high pressure and
overcurrent protection.
Direct-- drive multi--speed brushless DC blower motor is
standard on all 50EZ-- A models. Direct--drive, PSC (Permanent
Split Capacitor)condenser--fan motors are designed to help reduce
energy consumption and provide for cooling operation down to
40_F(4.4_C) outdoor temperature. MotormasterR II low ambient
kit is available as a field installed accessory .
Thermostat controls designed to work as a system with Carrier’s
small packaged product.
Thermostatic Expansion Valve -- A hard shutoff, balance port
TXV maintains a constant superheat at the evaporator exit (cooling
cycle) resulting in higher overall system efficiency.
Refrigerant system is designed to provide dependability. Liquid
filter driers are used to promote clean, unrestricted operation. Each
unit leaves the factory with a full refrigerant charge. Refrigerant
service connections make checking operating pressures easier.
High and Low Pressure Switches provide added reliability for the
compressor.
Indoor and Outdoor coils are computer--designed for optimum
heat transfer and efficiency. The indoor coil is fabricated from
copper tube and aluminum fins and is located inside the unit for
protection against damage. The outdoor coil is internally mounted
on the top tier of the unit.
Low sound ratings ensure a quiet indoor and outdoor
environment with sound ratings as low as 74dBA.
Easy to service cabinets provide easy 3--panel accessibility to
serviceable components during maintenance and installation. The
base with integrated drain pan provides easy ground level
installation with a mounting pad. A nesting feature ensures a
positive basepan to roof curb seal when the unit is roof mounted. A
convenient 3/4-- in. wide perimeter flange makes frame mounting
on a rooftop easy.
Convertible duct configuration
Unit is designed for use in either downflow or horizontal
applications. Each unit is converted from horizontal to downflow
and includes two horizontal duct covers. Downflow operation is
provided in the field to allow vertical ductwork connections. The
basepan seals on the bottom openings to ensure a positive seal in
the vertical airflow mode.
Cabinets are constructed of heavyduty, phosphated, zinc-- coated
prepainted steel capable of withstanding 500 hours in salt spray.
Interior surfaces of the evaporator and electric heater
compartments are insulated with cleanable semi--rigid insulation
To Next Page
Need help?
General