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I-UNIT COMPONENTS
ELECTROSTATIC DISCHARGE (ESD)
Precautions and Procedures
CAUTION
components. Take precautions to neutralize
electrostatic charge by touching your hand
and tools to metal prior to handling the
control.
-
1-Control Transformer T1 all units
All use a single line voltage to 24VAC transformer mount-
ed in the control box. Transformer supplies power to con-
trol circuits in the unit. The transformer is rated at 70VA
-
age transformers use a single primary voltage tap.
BLUE YELLOW
ORANGE
RED
BLACK
230 VOLTS
208 VOLTS
PRIMARY
SECONDARY
FIGURE 3
2-Terminal Strip TB1
All indoor thermostat connections will be to TB1 located in
-
3-Condenser Fan Capacitors C1 & C2
of capacitor or outdoor fan motor nameplate.
4-Compressor Contactor K1 & K2
energize compressors B1 and B2 in response to thermo-
stat demand.
5-Variable Speed Drive VFD A96
Units are equipped with a factory-installed supply air in-
one of three speeds depending on the demand. When de-
or high speed depending on the cooling demand.
6-Condenser Fan Relay K10
Outdoor fan relay K10 is a DPDT relay with a 24VAC coil.
-
-
fan B10 is energized.
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