S1CG/S1HG
Single-Zone,
S2CG/S2HG
Dual-Zone
• Installation, Operation and Maintenance Manual •
Comfort where it counts
30
P/N 240007754, Rev. C [3/19/2010]
Starting the Unit
Operation and Maintenance
9,000– 12,000 Btuh units
In low ambient cooling, if a crankcase heater is
installed,
power the system 24 hours before
attempting to start
the unit in cool weather
(below 60°F).
Test unit data sheet
Aft er doing a fi nal system check using the
Operation Charts (supplied on previous
pages).
Record results on Test Unit Data Sheet on
page 38 .
Before leaving
Remove gauge set, install caps. Mount all ac-
cess panels and make sure they are properly
secured.
Make fi nal visual inspection and repair any
defi ciencies.
NOTICE
A hard start kit may be required for units
in low voltage applications.
Th
e S1CG/S1HG and S2CG/S2HG outdoor
sections are the compressor bearing units of
the system. It operates at the command of the
indoor section or room thermostat. Th
erefore,
the system operation will be described in the
manual pertaining to the indoor section.
EMI units are designed and constructed
for reliability and long life with minimal
maintenance. You can assure peak operating
effi
ciency by regularly inspecting for free air
passage into and through the coil. If debris
collects on the air coil, it should be cleaned
by “back-fl ushing” with a spray of water or
vacuuming.
TURN OFF POWER SUPPLY
FIRST
. Outdoor units may be cleaned or
waxed if desired. Use a non-abrasive car wax
(on metal surfaces only).
This unit is equipped with a permanently
lubricated motor. Although oiling is not nec-
essary, adding a few drops through the oiling
ports twice yearly will extend the life of the
motor. Do not over oil.
Panels should remain on the unit at all times.
Service should be performed by a
qualifi ed
service agency only
.
Specifi c changes
All EMI products are subject to ongoing
development programs so design and speci-
fi cations may change without notice. Please
consult the factory for more information.
