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System options
•
Corrosion-resistant coil options (sea
coast and harsh environment usage):
–
Copper fin/copper tube condenser
coil
–
Coated aluminum fin/copper tube
condenser coil
•
Low Ambient controls for cooling opera-
tion down to 0° F (standard equipment
can operate down to 32°F)
–
Optional field-installed kit, when
specified, for cooling operation down
to 0°F — kit includes control, louvers
and wind baffle plus installation
instructions
•
Low Ambient controls for operation
down to 0° F (consult factory for avail-
ability)
•
Models 09–12 only:
–
115v (single-zone only — S1CG or
S1HG)
–
Field-installed thermostatically-con-
trolled crankcase heater for straight
cool units (S1CG or S2CG)
P/N 240007754, Rev. A [051509]
S1CG/S1HG
• Installation, Operation and Maintenance Manual •
Verify unit before installing
S2CG/S2HG
Single-Zone,
(continued)
Installer-supplied items
•
Power wiring
•
Low Volt wiring (18 awg minimum)
•
Secure mounting pad or foundation
•
Refrigerant piping (if not purchased from
EMI)
•
High Volt Disconnect
•
Refrigerant for charging interconnect pip-
ing (see charge table on page 15)
Low Ambient controls
when the system is asked to cool at
outdoor temperatures below 32° F, this
may cause damage to the compressor
and coil, and may void the warranty. A
field-installed low-ambient kit allows
operation down to 0° F.
This is accomplished by cycling the
condenser fan on and off. This will,
in turn, maintain a constant low-side
pressure, providing a steady cooling
effect and keeping the air handler from
frosting-up.
The optional kits include louvers/wind
baffle, crankcase heater, and/or outdoor
fan cycling switch, and installation in-
structions.
5
Dual-Zone
NOTICE
are required
Made in the USA
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