Fig. 86 — Open System Network Wiring

Fig. 86 — BT485 Installation

SMOKE PURGE — Smoke Purge mode removes smoke from the interior spaces and replaces it with fresh outside air. The factory-installed optional economizer with option/ accessory power exhaust are required for this function. Smoke purge is accomplished by the following:

turning supply fan on

opening the economizer (option required)

running the exhaust fans (option or accessory required)

opening the exhaust dampers See Fig. 82 for wiring.

SMOKE CONTROL INSTALLATION — Implementation of the various smoke control modes on these units requires the in- staller to modify the unit wiring to add contacts (via either manual switches or relays) that will selectively interrupt and override standard factory control sequences. See Table 31 and Fig. 81 and 82 for more information.

Table 31 — Smoke Control Modes

 

 

MODE

 

FUNCTION

Fire

Pressur-

Evacuation*

Smoke

 

 

Shutdown

ization

 

Purge*

Supply Fan

Off

On

Off

On

VFD†

Open/On

Open/On

Economizer

Closed

Open

Open

Open

Return Air

Open

Closed

Closed

Closed

Damper

 

 

 

 

Exhaust

Off

Off

On

On

Fans

 

 

 

 

Exhaust

Closed

Closed

Open

Open

Damper

 

 

 

 

LEGEND

 

 

 

VAV — Variable Air Volume

 

 

VFD — Variable Frequency Drive

 

 

*Power exhaust option required for this mode. †Applicable to VAV units with appropriate options.

Copyright 2010 Carrier Corporation

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53480079-01

Printed in U.S.A.

Form 48P-4SI

Pg 76

11-10

Replaces: 48P-3SI

Page 76
Image 76
Carrier P5030-100, P3, 48P2, P4 installation instructions Open System Network Wiring, Smoke Control Modes

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