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C08054
Fig. 13 -- Typical Power Diagram
LEGEND
C --- Contactor, compressor
CAP --- Capacitor
CB --- Circuit breaker
CCH --- Crankcase heater
COMP --- Com pressor motor
DDC --- Direct digital contr ol
FU --- Fuse
GND --- Ground
HPS --- High pressure switch
IAQ --- Indoor air quality sensors
IFC --- Indoor fan motor
IFM --- Indoor fan motor
LA --- Low ambient lockout
LPS --- Low pressure switch
LSM --- Limit switch (manual reset)
MGV --- Main gas valve
OAT --- Outdoor air temp sensor
OFM --- Outdoor fan motor
OLR --- Overload relay
PL --- Plug a ssembly
POT --- Po tentiometer
PMR --- Phase monitor relay
QT --- Quadruple ter minal
R---Relay
RAT --- Return air temp sensor
SAT --- Supply air temp sensor
TDR --- Time delay relay
TRAN --- Transformer
NOTES:
1. If any of the original wire furnished must be replaced, it must be replaced with type 90 C wire or its equivalent.
2. Compressor and fan moto rs are thermally prot ected. Three phase motors are protected against primary single phasing
conditions.
3. On 208/230V units, transformer is wired for 230V. If unit is to be run with 208V power supply, disconnect black wire from
230V tap and connect to 200V tap. 230V, 200V taps on transformer do not appear on 575V transformer and 575V tap does
not appear on 208/23/460V tra nsformer.
4. Use copper, copper clad, aluminum or aluminum connectors.
5. Use copper conductor on ly.
558J