Spec Sheet

2021 Carrier Corporation D 3300 Riverwood Parkway Atlanta GA, 30339 Edition Date: 04/21 Catalog No. 38MHRC-01PD
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Replaces: NEW
Part 1 - GENERAL
1.01 System Description
1. Outdoor air-cooled split system compressor sections suitable for
on-the-ground, rooftop, wall hung or balcony mounting. Units
consist of a rotary compressor, an air-cooled coil, propeller-type
draw-through outdoor fan, reversing valve (HP), accumulator (HP
units), metering device(s), and a control box. Units discharge air
horizontally as shown on the contract drawings. Units function as
the outdoor component of an air-to-air heat pump system.
2. Units are to be used in a refrigeration circuit matched to ductless
heat pump fan coil units.
1.02 Agency Listings
1. Unit construction complies with ANSI/ASHRAE 15, latest
revision, and with the NEC.
2. Units are evaluated in accordance with UL standard 60335-2-40.
3. Units are listed in the CEC directory.
4. Unit cabinet is capable of withstanding 500-hour salt spray test per
Federal Test Standard No. 141 (method 6061).
5. Air-cooled condenser coils are leak tested at 550 psig.
1.03 Delivery, Storage, And Handling
Units are shipped in one piece and are stored and handled per unit
manufacturer’s recommendations.
1.04 Warranty (For Inclusion By Specifying Engineer)
Part 2 - PRODUCTS
2.01 Equipment
A. General:
Factory assembled, single piece, air-cooled outdoor unit.
Contained within the unit enclosure is all the factory wiring,
piping, controls, and the compressor.
B. Unit Cabinet:
1. Unit cabinet is constructed of galvanized steel, bonderized and
coated with a baked-enamel finish on the inside and outside.
2. Unit access panels is removable with minimal screws and
provides full access to the compressor, fan, and control
components.
3. The outdoor compartment is isolated and has an acoustic lining
to assure quiet operation.
C. Fans:
1. Outdoor fans are the direct drive propeller type, and discharges
air horizontally. Fans draw air through the outdoor coil.
2. Outdoor fan motors are totally enclosed, single phase motors with class
E insulation and permanently lubricated ball bearings. Motor shall be
protected by internal thermal overload protection.
3. The shaft has inherent corrosion resistance.
4. Fan blades are non-metallic and statically and dynamically
balanced.
5. Outdoor fan openings are equipped with a PVC metal/mesh
coated protection grille over the fan.
GUIDE SPECIFICATIONS
HORIZONTAL DISCHARGE OUTDOOR UNITS
Size Range: 3/4 to 2 Ton Nominal Cooling and Heating Capacity
Model Number: 38MHRCQ
D. Compressor:
1. Compressor is the fully hermetic rotary type.
2. Compressor is equipped with an oil system, operating oil
charge, and a motor.
3. Motor is NEMA rated class E, suitable for operation in a
refrigerant atmosphere.
4. Compressor assembly is installed on rubber vibration isolators.
E. Outdoor Coil:
The coil is constructed of aluminum hydrophilic pre-coated
fins mechanically bonded to seamless copper tubes, which are
cleaned, dehydrated, and sealed.
F. Refrigeration Components:
Refrigerant circuit components include a brass external liquid
line service valve with service gage port connections, a
suction line service valve with a service gage connection port,
service gage port connections on compressor suction and
discharge lines with Schrader type fittings with brass caps,
accumulator, reversing valve.
G. Controls and Safeties:
Operating controls and safeties are factory selected,
assembled, and tested. The minimum control functions
include the following:
1. Controls:
• A time delay control sequence is provided standard
through the fan coil board
• Automatic outdoor fan motor protection.
2. Safeties:
• System diagnostics
• Compressor motor current and temperature overload
protection
• Outdoor fan failure protection.
H. Electrical Requirements:
1. Unit operates on single-phase, 60 Hz power at 115V for unit size
12 and 208/230V for unit sizes 09, 12, 18, 24 as specified.
2. Unit electrical power has a single point connection.
3. Unit Control voltage to the indoor fan coil is 0-15V DC.
4. All power and control wiring must be installed per NEC and all
local electrical codes.
5. The unit has high and low voltage terminal block connections.