Andover Controls Infinity - Page 129

Smoke Control Programs
5-53 Infinity Smoke Control Guide
TOC
If INFINITY1 Zone1.PRS then
RADmp = -On ‘ Close
Else
If INFINITY1 Zone1.SMK then
RADmp = -On ‘ Close
Else
If INFINITY1 Zone2.SMK or INFINITY1 Zone3.SMK ~
or INFINITY1 Zone4.SMK or INFINITY1 ~
STRWL.SMK then
RADmp = -On ‘ Close
Else
RADmp = DefaultDmpr.RA ‘ Normal HVAC Control
Endif
Endif
Endif
Endif
Endif
Endif
‘Call Override Check Function
OVR_Check()
Goto FanControl
File Explanation:
This program controls the state of the Supply fan, Return fan, Outside
Air damper, Exhaust Air damper, and Return Air damper for AHU1.
Each fan or damper is controlled by it’s own set of nested “if-then-else”
statements. The nested “if-then-else” statements prioritize the control
modes as follows:
• The FSCS overrides: ON-OFF, OPEN-CLOSE
• Automatic Smoke Control
• HVAC control
The HVAC control is performed by setting the default values for each
fan or damper: Default.Sfan, Default.Rfan, DefaultDmpr.OA,
DefaultDmpr.EA, DefaultDmpr.RA.
This program also calls the OVR_Check function.
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