Carrier P5030-100, P3, 48P2, P4 Open System Network Wiring, BT485 Installation, Smoke Control Modes

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