58
LEGEND AND NOTES FOR FIG. 57
NOTES:
1.Connect TRAN1 to for 460 v units. Connect to
for 230 v
units. If 208/230 v units are run with a 208 v power supply con-
nect to .
2.Connect TRAN2 to BLK lead for 460 v units. Connect to ORN
lead for 230 v units. If 208/230 v units are run with a 208 v
power supply connect to RED lead.
3.Circuit breaker must trip amps are equal to or less than 156%
FLA (full load amps) for CB1 and CB2. All others are 140%.
4.If any of the original wire furnished must be replaced, it must
be replaced with type 90° C wire or its equivalent.
5.Number(s) indicates the line location of contacts. A bracket
over (2) numbers signifies single pole double throw contacts.
An underlined number signifies a normally closed contact.
Plain numbers (no lines), signify a normally opened contact.
6.Condenser fan motors are thermally protected.
7.Three phase motors are protected under primary single phas-
ing conditions.
ALM —
Alarm
IGVM —
Inlet Guide Vanes Motor
C —
Contactor
LAT —
Leaving-Air Temperature
CB —
Circuit Breaker
LPS —
Low-Pressure Switch
CCB —
Control Circuit Breaker
MTR —
Motor
COMP —
Compressor
MV —
Main Valve
CH —
Crankcase Heater
NC —
Normally Closed
CR —
Control Relay
NO —
Normally Open
DPS —
Differential Pressure Switch
OFC —
Outdoor Fan Contactor
DPT —
Discharge Pressure Transducer
OFM —
Outdoor (Condenser) Fan Motor
EAT —
Enering-Air Temperature
OMR —
Outdoor Motor Relay
EC —
Enthalpy Control
PCB —
Power Exhaust Circuit Breaker
ECR —
Economizer Close Relay
PEC —
Power Exhaust Contactor
EOR —
Economizer Open Relay
PEDM —
Power Exhaust Damper Motor
EQUIP —
Equipment
PEM —
Power Exhaust Motor
FS —
Fan Status Switch
P, PL —
Plug
GND —
Ground
RCB —
Return Fan Circuit Breaker
HIR —
Heat Interlock Relay
RES —
Resistor
HPS —
High-Pressure Switch
RFC —
Return Fan Contactror
HR —
Heater Relay
RFM —
Return Fan Motor
HTR —
Heater
SCT —
Saturated Condensing Thermistor
IDC —
Induced Draft Contactor
TB —
Terminal Block
IDM —
Induced Draft Motor
TRAN —
Transformer
IFC —
Indoor (Evaporator) Fan Contactor
U —
Unloader
IFCB —
Indoor Fan Circuit Breaker
VFD —
Variable Frequence Drive
IFM —
Indoor Fan Motor Field Wiring
IGV —
Inlet Guide Vanes Factory Wiring
H4
H3
H2
