S1CG/S1HG
Single-Zone,
S2CG/S2HG
Dual-Zone
• Installation, Operation and Maintenance Manual •
Comfort where it counts
4
P/N 240007754, Rev. C [3/19/2010]
Product description
Th
e EMI Series S1CG/S1HG and S2CG/
S2HG condensing units are air-cooled, verti-
cally-arranged side-discharge, high-effi
ciency
units designed specifi cally to meet or exceed
a 13 SEER rating.
Th
e S1CG Models 09–36 and S1HG Models
09–24 condensing units will provide cooling
and heating for a single air handler, as identi-
fi ed on page 34 and page 35 .
Th
e S2CG/S2HG 18,000 (99), 21,000 (92)
and 24,000 (22) Btuh capacity condensing
units will provide cooling and heating for two
air handlers, as identifi ed on page 36 .
The S1CG/S1HG and S2CG/S2HG are
quiet units that can be recommended for both
commercial and residential applications.
Features
Installation of the S1CG/S1HG and
•
S2CG/S2HG condensing units is sim-
plifi ed by a 24v control interconnection
from the air handler.
Multiple units can be lined up in close
•
proximity to an exterior wall.
Service valves are recessed to reduce
•
tampering.
All 9,000-12,000 Btuh units are equipped
•
with a Duratec Performance Package that
includes an oversized suction accumula-
tor with surge baffl
es and enhanced oil
management and a factory-installed solid
core fi lter drier.
A factory-installed crankcase heater is
•
standard on S1HG 09 &12 (thermostati-
cally controlled) and S2HG models, and
is available as optional equipment on
other models.
Verify unit before installing
Controls and components
(Factory-installed or supplied)
Compressor and fan motor contactor
•
Run capacitor
•
Low voltage terminal connections
•
H.P.S. (High pressure switch) with
•
manual external reset
Heat pump hard start
•
Cooling operation down to 32°F standard
•
on all units
Models 09–12 only:
•
Large capacity suction accumulator
–
Solid-core fi lter drier
–
Thermostatically-controlled crank-
–
case heater (heat pump only)
Thermostatically-controlled
crankcase heater
This feature energizes the crankcase
•
heater only when needed, saving unnec-
essary power usage and increasing overall
system effi
ciency.
