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Carrier 39L User Manual

Page 57

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LEGEND

AO

Analog Output

EVAC — Evacuation
EXD

Exhaust Air Damper Actuator

FSD

Fire Shut Down

HOA

HAND/OFF/AUTO Switch

HPS

High-Pressure Switch

LTT

Low Temperature Thermostat

OAD

Outside Air Damper Actuator

PRES — Pressurization
RAD

Return Air Damper Actuator

RFR

Return Fan Relay

SF

Supply Fan Contactor

SFR

Supply Fan Relay

TB

Terminal Block

TRAN — Transformer

Factory Wiring
Field Wiring

*Factory installed and wired if ordered with exhaust box.

NOTE: Return fan power circuit may be different than the supply fan
starter power.

Fig. 50 — Smoke Control Option Wiring Schematic (39NX)

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