Carrier 38YRA - Built-In-Reliable Components; Limited Warranty

2
Model number nomenclature
38YRA 018
Electric Heat Pump
Nominal Capacity
018 — 18,000 Btu 042 — 42,000 Btu
024 — 24,000 Btu 048 — 48,000 Btu
030 — 30,000 Btu 060 — 60,000 Btu
036 — 36,000 Btu
301
Packaging
Series
Electrical
3—208/230-1
design offers improved reliability.
Each compressor is mounted on
rubber isolators for additional sound
reduction. The scroll compressor will
start under most system loads, thus
eliminating the need for start
assistance components. For
improved serviceability, the 018
through 042 models are equipped
with a compressor terminal plug.
Continuous operation is approved
down to –30
° F (–34.4 ° C) in the
heating mode and down to 55
° F
(12.8
° C) in the cooling mode. (See
heating and cooling performance
tables.) The scroll compressor is
covered with a standard 10-year
limited warranty.
Built-In-Reliable Components —
Includes a suction tube accumulator
that minimizes the amount of liquid
refrigerant that reaches the
compressor; high-pressure switch for
high-pressure protection; and a low-
pressure switch for loss of charge
protection.
Defrost Control Board —
Incorporates a built-in 5-minute
compressor time-delay relay, defrost
relay, defrost timer, and low-voltage
terminal board. The defrost control
is a time/temperature initiation/
termination control which includes 3
field-selectable time periods of 30,
50, and 90 minutes.
Thermostatic Expansion Valve
(TXV)
— This unit must be installed
with a TXV on the indoor coil. The
FC4 and FK4 indoor fan coils come
factory equipped with a bi-flow TXV.
When installed in this application, no
further change is required. If any other
indoor fan coil or furnace coil is used,
an accessory bi-flow TXV must be
installed. See accessory list in this
publication for correct part no.
Weather-Protective Cabinet —Steel
is galvanized and coated with a layer
of zinc phosphate. A coat of modified
polyester powder coating is then
applied and baked-on, providing each
unit with a hard, smooth finish that
will last for many years.
All screws on cabinet exterior are
coated for a long-lasting, rust-
resistant, quality appearance.
Unit Design —All units are equipped
with totally enclosed fan motors
for greater reliability under rain and
snow conditions. The large,
wraparound coil uses copper tube
and enhanced sine wave aluminum
fin and is designed for optimum heat
transfer during heating and cooling.
The vertical air discharge carries the
sound and air up and away from
adjacent patio areas and foliage.
Rows of composite coils can be
cleaned with a common garden
hose.
External Service Valves —Both
service valves are brass, back seating
type with sweat connections. Each
valve has a service port for ease of
checking operating refrigerant
pressures. The suction service port
provides for ease of checking
operating pressure in the heating
mode.
Limited Warranty —Standard
1-year warranty on all parts, with an
additional 9-year warranty on the
compressor.