General Alarm Shutdown For Fans And Dampers; Overview; Example: Fan / Damper Shutdown For A Four Story Building; Step 1. Program Point Type And Custom Labels For Fan Relays - Simplex 4010 Applications Manual

General Alarm Shutdown for Fans and Dampers

Overview

Example: Fan / Damper
Shutdown for a Four Story
Building
Step 1. Program Point Type
and Custom Labels for Fan
Relays
Step 2. Program Point Types
and Custom Labels for
Damper Monitor Switches and
Relays
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This application describes using Custom Control to shutdown all fans and close
all dampers during a general alarm condition. A System Reset returns all fans
and dampers to normal operation.
Refer to Simplex Technical Support for advice on implementing more complex
fan/damper applications. Situations requiring extensive monitoring and control
of the building's fans and dampers may be beyond the 60 equation capacity of
the 4010.
The following figure illustrates a typical four-story building. Assume that the
building includes a supply and exhaust fan, and the relays controlling the
dampers are wired to 24 PT I/O outputs.
SUPPLY
Figure 4-7. Fan / Damper Example
Use the PC Programmer's Point Tab to program each fan relay with the RELAY
point type. When defining custom labels, make sure to use descriptive labels,
such as "EXHAUST FAN RELAY."
Each damper typically contains two switches for monitoring the position of the
damper and a relay for controlling the damper motor. Use the PC Programmer's
Point Tab to program the Point Type and Custom Label for these components,
as follows:
•
Fan Relays. Program each relay with the RELAY point type. When
defining custom labels for damper relays, make sure to use descriptive
labels, such as "EXH DAMPER1 RELAY."
4-15
EXHAUST
POSITIVE
NEGATIVE
POSITIVE
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