LEGEND AND NOTES FOR FIG. 26-28
AGING — For the Burn-In Test (short these terminals)
AS, ASS’Y — Assembly
C—Contactor
CAP — Capacitor
CH — Crankcase Heater
CLO — Compressor Lockout
CN — Connector
COMP — Compressor
CT — Current Transformer
EMI — Electromagnetic Interference
FL — Fuse Link
FMC — Fan Motor Capacitor
FU — Fuse
GND — Ground
HA — Home Automation
HPS — High-Pressure Switch
HS — Hall (Rpm) Sensor
HTR — Heater
IDC Th — Indoor-Coil Temperature Thermistor
IFM — Indoor-Fan Motor
JEM-A — Japan Electric Manufacturing
Industry Association
K—Relay
LLPS — Liquid Low Pressure Switch
LPS — Low-Pressure Switch
LS — Limit Switch
ODA Th — Outdoor-Air Thermistor
ODC Th — Outdoor-Coil Thermistor
OFM — Outdoor-Fan Motor
OFR — Outdoor-Fan Relay
OL — Overload
PCB — Printed Circuit Board
PTC — Start Thermistor
RA Th — Return Air Thermistor
RC — Resistor Capacitor
RCV — Receiver
RVS — Reversing Valve Solenoid
SC — Start Capacitor
SR — Start Relay
ST — Start Thermistor
STM — Step Motor
TB — Terminal Block
TG — Time Guard
TP — Thermal Protector
TRAN — Transformer
Terminal (Marked)
Terminal (Unmarked)
Splice
Terminal Block
Factory Wiring
Field Control Wiring
Field Power Wiring
Accessory or Optional Wiring
1. If any of the original wire furnished must be replaced, it must be
replaced with type 90 C wire or its equivalent.
2. Wire in accordance with National Electrical Code (NEC) and local
codes.
3. The CLO locks out the compressor to prevent short cycling on com-
pressor overloads and safety devices. Before replacing CLO, check
these devices. A minimum one amp turn required to hold contacts
closed.
4. Thermistor wiring cable 35 feet long provided with unit.
5. IFM, OFM and compressor have internal thermal protectors.
6. Transformer has a 2 amp thermal fuse on the primary side.
23
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