Bryant DURAPAC PLUS SERIES 542J - Manual (Page 29)

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LEGEND AND NOTES FOR FIG. 40 AND 41
OFC — Outdoor Fan Contactor
OFM — Outdoor Fan Motor
OP — Overcurrent Protector
PL — Plug Assembly
QT — Quadruple Terminal
RVR — Reversing Valve Relay
RVS — Reversing Valve Solenoid
TB — Terminal Block
TC — Thermostat Cooling
TH — Thermostat Heating
TRAN — Transformer
Terminal (Marked)
Terminal (Unmarked)
Terminal Block
Splice
Factory Wiring
Field Wiring
Option/Accessory Wiring
To indicate common potential only;
not to represent wiring.
Economizer Motor
Remote POT Field Accessory
OAT Sensor
Disch Air Sensor
RAT Accessory Sensor
Low Ambient Lockout Switch
AHA — Adjustable, Heat Anticipator
BRK W/AT — Breaks with Amp Turns
C
— Contactor, Compressor
CAP — Capacitor
CB — Circuit Breaker
CC — Cooling Compensator
CH — Crankcase Heater
CLO — Compressor Lockout
COMP — Compressor Motor
CTD — Compressor Time Delay
DB — Defrost Board
DFT — Defrost Thermostat
DM — Damper Motor
DR — Defrost Relay
DU — Dummy Terminal
EQUIP — Equipment
FL — Fuse Link
FPT — Freeze Protection Thermostat
FU — Fuse
GND — Ground
HC — Heater Contactor
HPS — High-Pressure Switch
HR — Heat Relay
HTR — Heater
IAQ — Indoor Air Quality Sensor
IFC — Indoor-Fan Contactor
IFCB — Indoor-Fan Circuit Breaker
IFM — Indoor-Fan Motor
IP — Internal Protector
L — Light
LALS — Low Temperature Compressor
Lockout Switch
LPS — Low-Pressure Switch
LS — Limit Switch
NEC — National Electric Code
OAT — Outdoor Air Temperature Sensor
OCCUP — Occupancy Sensor
LEGEND
NOTES:
1. Compressor and/or fan motor(s) thermally protected three-phase motors protected against primary single
phasing conditions.
2. If any of the original wire furnished must be replaced, it must be replaced with Type 90° C or its equivalent.
3. TRAN1 is wired for 230-v operation. If unit is 208-v, disconnect the black wires from the ORN TRAN wire
and reconnect to the RED TRAN wire, apply wirenuts to wires.
4. CB1,2 must trip amps are equal to or less than 156% FLA, IFCB 140%.
5. The CLO locks out the compressor to prevent short cycling on compressor overload and safety devices;
before replacing CLO, check these devices.
6. Jumpers are omitted when unit is equipped with economizer.
7. Number(s) indicates the line location of used contacts. A bracket over (2) numbers signifies a single pole,
double throw contact. An underlined number signifies a normally closed contact. Plain (no line) number
signifies a normally open contact.
8. Remove jumper between RC & RN.
9. 620 Ohm, 1 watt, 5% resistor should be removed only when using differential enthalpy or dry bulb.
10. If a separate field-supplied 24-v transformer is used for the IAQ sensor power supply, it cannot have the
secondary of the transformer grounded.
11. OAT sensor is shipped inside unit and must be relocated in the field for proper operation.
12. For field-installed remote minimum position POT, remove black wire jumper between P and P1 and set
control minimum position POT to the minimum position.