1
50VT
Performance
t
Single---Packaged Heat Pump Units with Puron
R
(R---410A) Refrigerant
Single--- And Three---Phase
2 to 5 Nominal Tons (Sizes 024---060)
Product Data
A99001
Fig. 1 -- Unit 50VT
Single--Packaged Products with Energy--Saving Features and
Puron
R
refrigerant.
S
Up to 14.5 SEER
S
8.0 HSPF
S
12 EER at 95
_
F (35
_
C) OD
S
Factory--Installed TXV
S
Multi--Speed Blower--Standard
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 14.5.
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.
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 50VT models. Direct--drive, PSC condenser--fan
motors are designed to help reduce energy consumption and
provide for cooling operation down to 40
_
F (4.4
_
C) outdoor
temperature. Motormaster
R
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. Copper fin coils and pre--coated fin coils
are available from the factory by special order. These coils are
recommended in applications where aluminum fins are likely to be
damaged due to corrosion. They are ideal for seacoast applications.
Low sound ratings
ensure a quiet indoor and outdoor
environment with sound ratings as low as 72dBA.
Easy to service cabinets
provide easy single--panel accessibility to
serviceable components during maintenance and installation. The
base with integrated drain pan provides easy ground level
installation with or without a mounting pad. Convenient
hand--holds are provided to manipulate the unit on the jobsite. 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 easy use in either downflow or horizontal
applications. Each unit is easily converted from horizontal to
downflow with the two duct covers, standard on 3 phase units and
available as an accessory for single phase units. Downflow
operation is easily provided in the field to allow vertical ductwork
connections. The basepan utilizes knockout style seals on the
bottom openings to ensure a positive seal in the horizontal 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 board, which
