International comfort products CSH4 Installation Instructions Manual page 9

INSTALLATION INSTRUCTIONS
Figure 12
Time Delays
The unit time delays include:
S Five minute time delay to start cooling or heating operation
when there is a call from the thermostat. (To bypass this
feature in a non--communicating system, momentarily short
and release forced defrost pins.
S Five minute compressor recycle delay on return from a
brown out condition
S Two minute time delay to return to standby operation from
last valid communications (with Observer communicating
wall control only)
S One minute time delay of outdoor fan at termination of
cooling mode when outdoor ambient is greater than or
equal to 100_F (37.78_C).
S Fifteen second delay at termination of defrost before the
auxiliary heat (W2) is de--energized.
S Twenty second delay at termination of defrost before the
outdoor fan is energized.
S Seventy and sixty second compressor delays when Quiet
Shift--2 enabled.
Utility Interface
With Non- -Communicating Thermostats
428 01 5108 01
Generic Wiring Diagram for Standard Thermostat Installations
Specifications subject to change without notice.
R- -410A Split System Heat Pumps
Utility curtailment will only work when the unit is operating
with a non--communicating thermostat.
When the utility curtailment interface is applied with a
non--communicating thermostat, the utility relay should be
wired between R & Y.
Low Ambient Cooling
When this unit is required to operate below 55_F (12.78_C) to
a minimum of 0 _F (-- 17.78 _C) outdoor temperature,
provisions must be made for low ambient operation.
Low ambient applications require the installation of
accessory kits:
S Low Ambient Pressure Switch Kit
S Evaporator Freeze Thermostat
S Hard Start kit
S Crankcase Heater
S Field Supplied Isolation Relay
Support feet are recommended for low ambient cooling. See
P ro d u c t S p e c i f i c a t i o n s h e e t f o r k i t p a rt n u m b e rs o n
appropriate unit size and series unit.
F o r l o w a m b i e n t c o o l i n g w i t h t h e O b s e r v e r
Communicating Wall Control the cooling lockout must be
set to "Off" in the Wall Control setup.
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