Carrier 38YKB User Manual

Product
Data
38YKB (60 Hz)
Heat Pump
Sizes 018 thru 060
Copyright 1993 Carrier Corporation Form 38YKB-3PD
HEATING & COOLING
The 38YKB Outdoor Sections of
Split-System Heat Pumps are
designed for quiet, reliable heating
during the winter and cooling during
the summer. These heat pump
systems provide economy of
operation through energy
conservation. They recover heat for
indoor comfort from outdoor air
during the heating season and, by
automatically reversing the
refrigerant cycle, remove indoor heat
and excess humidity during the
cooling season. All models are listed
with ARI, UL, CSA and CEC. All
models are offered in 208/230v.
FEATURES/BENEFITS
Compressor — All models feature
the scroll compressor with the
exception of the 018-31 which has a
reciprocating compressor. 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. 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.)
Built-In-Reliability Components
— Includes a suction accumulator
that keeps liquid refrigerant from
reaching the compressor; a discharge
thermostat on 024 through 042 sizes
to protect the scroll compressor
from excessive internal discharge
temperatures under extreme
operating conditions, i.e. loss of
This document was created with FrameMaker 4.0.4

Carrier 38YKB Specifications

General

Brand	Carrier
Model	38YKB
Category	Heat Pump
Language	English

Summary

Product Data

Overview of 38YKB Heat Pump Systems

The 38YKB Outdoor Sections of Split-System Heat Pumps are designed for quiet, reliable heating and cooling.

Compressor Features

All models feature the scroll compressor, with the exception of the 018-31 which has a reciprocating compressor.

Built-In-Reliability Components

Includes a suction accumulator to keep liquid refrigerant from reaching the compressor and other protective features.

Defrost Control Board Functionality

Unit Design for Reliability and Performance

Warranty Details

Standard 1-year on all parts, with an additional 4-years on the compressor.

Model Number Nomenclature

Physical Data

Accessory Description and Usage

Low-Ambient Controller

Solid-state head pressure controller activated by a temperature sensor to control outdoor fan motor run time.

Evaporator Freeze Thermostat

SPST switch that stops unit operation when evaporator reaches freeze-up conditions.

Isolation Relay

Crankcase Heater

Thermostatic Expansion Valve (TXV) Kits

Low-Pressure Switch

Dimensions

Electrical Data

Combination Ratings

Detailed Cooling Capacities

Heat Pump Heating Performance