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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
Copyright 2010 Carrier Corporation
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
LEGEND
*Power exhaust option required for this mode.
†Applicable to VAV units with appropriate options.
Fig. 86 — Open System Network Wiring
Fig. 86 — BT485 Installation
FUNCTION
MODE
Fire
Shutdown
Pressur-
ization
Evacuation*
Smoke
Purge*
Supply Fan
Off
On
Off
On
VFD†
—
Open/On
—
Open/On
Economizer
Closed
Open
Open
Open
Return Air
Damper
Open
Closed
Closed
Closed
Exhaust
Fans
Off
Off
On
On
Exhaust
Damper
Closed
Closed
Open
Open
VAV
—
Variable Air Volume
VFD
—
Variable Frequency Drive
Summary of Contents for WEATHER MASTER 48P2
Page 10: ...10 Fig 1 Roof Curb Sizes 030 050...
Page 11: ...11 Fig 2 Roof Curb Sizes 055 060...
Page 12: ...12 Fig 3 Roof Curb Sizes 070 100...
Page 13: ...13 Fig 4 Condenser Section Roof Curb Sizes 070 and 075...
Page 14: ...14 Fig 5 Condenser Section Roof Curb Sizes 090 and 100...
Page 21: ...21 Fig 12 Base Unit Dimensional Drawing 48P2 P3030 035 Standard Chassis Unit Shown a48 8613...
Page 22: ...22 Fig 13 Base Unit Dimensional Drawing 48P4 P5030 035 Standard Chassis Unit Shown a48 8614...
Page 23: ...23 Fig 14 Base Unit Dimensional Drawing 48P2 P3040 050 Standard Chassis Unit Shown a48 8615...
Page 24: ...24 Fig 15 Base Unit Dimensional Drawing 48P4 P5040 050 Standard Chassis Unit Shown a48 8616...
Page 25: ...25 Fig 16 Base Unit Dimensional Drawing 48P2 P3055 060 Standard Chassis Unit Shown a48 8617...
Page 26: ...26 Fig 17 Base Unit Dimensional Drawing 48P4 P5055 060 Standard Chassis Unit Shown a48 8618...
Page 27: ...27 Fig 18 Base Unit Dimensional Drawing 48P2 P3070 Standard Chassis Unit Shown a48 8619...
Page 28: ...28 Fig 19 Base Unit Dimensional Drawing 48P4 P5070 Standard Chassis Unit Shown a48 8620...