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Smoke control sequence
commands
7
Close adjacent zone exhaust
dampers
8
Open fully adjacent zone supply
air dampers
9
Close supply air dampers to
remote zones on multi zone
system
10
Close exhaust air dampers to
remote zones on multi zone
system
11
Start multi-zone system supply fan
(if not currently on)
12
Start multi-zone system return fan
(if not currently on)
13
Monitor air flow and damper
position at panel
Note: Multiple dual duct systems serving portions of a fire floor will
require sequencing for each dual duct system consistent with smoke
control application.
Variable air volume (VAV) smoke
control
Table 18 lists the sequence for a variable air volume
(VAV) smoke control system.
Table 18: Variable air volume (VAV) smoke control
Smoke control sequence
commands
1
AUTO OFF
2
Open central VAV outside exhaust
outside dampers
3
Close central VAV return damper
4
Reset duct static pressure controls
to maximum design levels
5
Close smoke zone air supply
damper
6
Open smoke zone air exhaust
damper
7
Close adjacent zone exhaust
dampers
VM-1 Smoke Management Application Guide
Objective
Prepare zones for
pressurization and limit
smoke spread
Prepare zones for
pressurization and limit
smoke spread
Limit smoke spread
Limit smoke spread
Pressurize adjacent zones
Create negative pressure in
smoke zone by exhausting
smoke
Confirms system operation
Objective
Overrides HVAC System
Reduce pressure
development in smoke zone
Limit smoke spread
Maximize air flow and
prevent duct collapse or
failure
Isolate smoke development
Reduce pressure
development
Prepare zones for
pressurization and limit
smoke spread
Chapter 3: Smoke control system programming
Smoke control sequence
commands
8
Open fully adjacent zone supply
air dampers
9
Close supply air dampers to
remote zones on VAV system
10
Close exhaust air dampers to
remote zones on VAV system
11
Start VAV system supply fan (if
not currently on) and set for
maximum allowable volume
12
Start VAV system return fan (if not
currently on) and set for maximum
allowable volume
13
Monitor air flow and damper
position at panel
Note: Multiple VAV systems serving portions of a fire floor will require
sequencing for each VAV system consistent with smoke control
application.
Objective
Prepare zones for
pressurization and limit
smoke spread
Limit smoke spread
Limit smoke spread
Pressurize adjacent zones
Create negative pressure in
smoke zone by exhausting
smoke
Confirms system operation
49
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