Table Of Contents; Features/Benefits - Carrier GEMINI SELECT 38APS025-065 Product Data

Features/Benefits (cont)
The latest safety standards for 38AP
units are certified to UL (Underwriters
Laboratories) and CSA (Canadian
Standards Association) standards, ETL
approved.
Versatility
The 38AP Series condensing units fea-
ture up to 6 compressors and 2 refrig-
erant circuits, and can be matched with
a wide variety of air-handling units.
Single circuit condensing units can op-
erate with a single air handler. Dual cir-
cuit condensing units can operate with
a single air handler or two separate air
handlers. Standard units have multiple
scroll compressors. A digital scroll op-
tion is available. This option of digital
control closely matches building loads
and allows fine incremental adjust-
ments to the variance in load.
Durable construction
All 38AP units have weatherized cabi-
nets constructed of heavy-duty galva-
nized steel prepainted with corrosion-
resistant baked enamel. Inside and out-
side surfaces are protected to ensure

Table of contents

Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Capacity Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-9
Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10,11
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-16
Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18-85
Typical Piping and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86-88
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89-91
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92-94
Typical Control Wiring Schematics. . . . . . . . . . . . . . . . . . . . . . . . . . . . .95-98
Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99-103
Guide Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104-106
2
long life and good appearance. The
durable, galvanized steel, prepainted
components exceed the requirements
of the 500-hour salt spray test per
ASTM (American Society for Testing
and Materials) B117.
All 38AP units have Novation
exchangers with microchannel coil
technology. The microchannel heat ex-
changer (MCHX) coils provide long-
term reliability, high performance heat
transfer, and significant savings in re-
frigerant charge. E-coated MCHX is
offered as an option for harsh industri-
al or coastal conditions.
Reliability
The 38AP condensing units feature
highly reliable, hermetic scroll com-
pressors. Each 38AP unit is capable of
unloading in staging sequence of scroll
compressors. Compressors are mount-
ed on rails with vibration isolators to
provide quiet operation and reduced
component stress.
The 38AP units have single or dual
independent circuits; they provide in-
herent backup capability. Each circuit
is also protected by the following safety
features:
• Short-cycle protection
• Low superheat protection
• Loss of refrigerant charge
®
heat
protection
• Reverse rotation protection
• Suction and discharge pressure
transducers
• High refrigerant pressure switch
(discharge)
• Circuit breakers or fuses for short
circuit protection of compressors
and outdoor fans
• Suction line accumulator for each
refrigerant circuit
Easier installation and service
The 38AP units are equipped with
hinged control-box access doors, con-
trol interface terminal boards, liquid
line shutoff valves, and suction line ser-
vice valves.
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