Legend (fig. 5-12, table 2) – Carrier 39L User Manual

Page 7

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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

1

SAT

Supply-Air Temperature

2

OAT

Outdoor-Air Temperature

3

MAT

Mixed-Air Temperature

6

SPT

Space-Air Temperature

7

RAT

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

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