LEGEND (Fig. 5-12, Table 2)
AFS — Airflow Switch
AO — Analog Output
AOTC — Analog Output Temperature Control
AQ
1
—Air Quality Sensor, No. 1
AQ
2
—Air Quality Sensor, No. 2
C—Contactor
CCW — Counterclockwise
CH — Channel
CR — Control Relay
CUST — Condensing Unit Status
CV — Constant Volume
CW — Clockwise
CWV — Chilled Water Valve
DHH — Duct High Humidity
DO — Discrete Output
DOTC — Discrete Output Temperature Control
DSIO — Control Module, Electric Heat and/or DX
DTCC — Discrete Time Clock Control
DX — Direct Expansion
DXS — DX Cooling Stage
DXSD — Direct Expansion Cooling Shutdown
EHS — Electric Heaters
ELEC — Electric
ENT — Enthalpy Switch
EQUIP — Equipment
EVAC — Smoke Evacuation Input
EXD — Exhaust Air Damper Actuator
FLTS — Filter Status Switch
FSD — Fire Shutdown Device
FU — Fuse
GND — Ground
HIR — Heat Interlock Relay
HOA — Hand-Off-Auto. Switch
HPS — High-Pressure Switch
HSIO — Keyboard and Display Module
HT — Heat
HUM — Humidifier
HWV — Hot Water Valve
IGV — Inlet Guide Vane Actuator
LTT — Low Temperature Thermostat
MAD — Mixed-Air Damper Actuator
MAT — Mixed-Air Temperature
MPSIO — Master Processor Module
(Processor Module)
OAD — Outdoor-Air Damper Actuator
OARH — Outdoor-Air Relative Humidity
OAT — Outdoor-Air Temperature
OAVP — Outdoor-Air Velocity Pressure
OT — Outside-Air Thermostat
PH — Preheat
PL — Plug Assembly
PRESS — Smoke Pressurization Input
PSIO — Processor Module
PURG — Smoke Purge Input
RAD — Return-Air Damper Actuator
RAT — Return-Air Temperature
RFAN — Return Fan
RFR — Return Fan Relay
RFVC — Return Fan Volume Control
RH — Relative Humidity
RVP — Return Velocity Pressure
SAT — Supply-Air Temperature
SF — Fan Status Relay
SFAN — Supply Fan
SFR — Supply Fan Relay
SMK — Smoke
SNB — Snubber
SP — Static Pressure Transducer
SPSIO — Slave Processor Module
(Option Module)
SPT — Space Temperature
SVP — Supply Velocity Pressure
SW — Switch
TB — Terminal Block Terminal
TEMP — Temperature
TRAN — Transformer
VAV — Variable Air Volume
W/ — With
WO/ — Without
Marked Wire or Cable
Terminal (Marked)
Terminal (Unmarked)
Terminal Block
Splice (Factory)
Splice (Field)
Wiring Factory
Wiring Field Control
Wiring Field Power
Option or Accessory
Common Potential
NOTES:
1. Use copper conductors only.
2. Wire is in accordance with National Electrical Code (NEC). For local codes,
replace original wires with 90 C wire or its equivalent.
3. Replace wires from IGV, FLTS, MAT, SAT, OAD, RAD, and ELEC HT with
125 C plenum cable conductor as required.
4. Input channel numbers and points for configuration of the optional
analog output temperature control (AOTC) follow:
CHANNEL SENSOR DESCRIPTION
1SAT Supply-Air Temperature
2OAT Outdoor-Air Temperature
3MAT Mixed-Air Temperature
6SPT Space-Air Temperature
7RAT Return-Air Temperature
34 TEMP Preheat or Optional Carrier Sensor
5. Reference for wire markers, where ‘X’ represents a numeral:
X— Item number on wiring harness
BX — Box wire
CX — Cable
KX — Accessory kit wire
7