Model Number Nomenclature - Carrier SYNERGY 2000 38YDA Product Data

An electronic ICM fan motor provides
multispeed operation and enhanced
low-speed efficiencies and sound
levels.
Auto-reset high- and low-pressure
switches continuously monitor system
operation.
Mechanical and electrical interlocks
between the low- and high-speed
contactors eliminate the potential of
compressor motor burnout due to
contactor malfunction.
A compressor crankcase heater,
energized at the proper temperature
during the compressor off cycle, helps
to provide reliable starting.
Application Versatility — The
38YDA can be combined with a wide
variety of evaporator coils, fan coils,
and furnaces to provide quiet,
dependable comfort. Unit can be
installed on a roof or at ground level on
a slab.
External Service Valves — Both
service valves are brass, back seating
type with sweat connections. Valves
are externally located so refrigerant

Model number nomenclature

Electric Heat Pump
Nominal Capacity
036 — 36,000 Btuh
048 — 48,000 Btuh
060 — 60,000 Btuh
As an ENERGY STAR
Partner, Carrier Corporation
has determined that this
product meets the ENERGY
STAR guidelines for energy
efficiency.
2
connections can be made quickly and
easily. Each valve has a service port for
ease of checking operating refrigerant
pressures.
Easy Serviceability — Removal of
access panel and control box cover
provides easy access to all electrical
controls and compressor. Removal of top
provides access to fan motor and coil.
A self-diagnostic indicator on the
electronic control board informs the
service technician of the problem area.
Compressor Protection — Each
compressor is protected with internal
PTC-type overloads. An internal
pressure relief valve provides high-
pressure protection to the refrigerant
system.
Standard Features — An electronic
control eliminates excessive wiring,
and features selectable second-stage
latching, TimeGuard II® short cycle
protection, a malfunction output signal
to the indoor thermostat, built in
Optimizer II®, zoning interface, and
outdoor thermostat for auxiliary heat
staging.
38YDA 036 3
CERTIFICATION OF MANUFACTURING SITE.
SM
0 1
Packaging
Series
Electrical
3 — 208/230-1
A compressor sound hood and
discharge muffler provide improved
sound power levels as well as sound
quality.
Compressor Quick Start —
Capacitor and relay.
Thermostatic Expansion Valve —
This unit must be installed with a TXV
on the indoor coil. The FK4 and FC4
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 number. TXV is not
shipped with unit.
Limited Warranty — One-year
limited warranty on all parts with an
extended second-year warranty on the
control board and extended second-
through tenth-year limited warranty on
the compressor. Refer to warranty
certificate for specific details.
®
CERTIFICATION APPLIES ONLY
WHEN THE COMPLETE SYSTEM
IS LISTED WITH ARI.