Andover Controls Infinity Manual page 133

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Rfan = Off
Else
If INFINITY1 Zone2.EXH or INFINITY1 Zone3.EXH or ~
INFINITY1 Zone4.EXH then
Rfan = On 'At least 1 zone needs exhausting
Else
If INFINITY1 Zone2.PRS and INFINITY1 Zone3.PRS ~
and INFINITY1 Zone4.PRS then
Rfan = Off ' All zones pressurized turn off fan
Else
If INFINITY1 Zone2.SMK or INFINITY1 Zone3.SMK or ~
INFINITY1 Zone4.SMK then
Rfan = On 'Smoke detected on one of the floors
Else
If INFINITY1 Zone1.SMK or INFINITY1 STRWL.SMK ~
then
Rfan = Off ' pressurize as Zone 1 or Stairs is in smoke
Else
Rfan = Default.Rfan ' Normal HVAC Control
Endif
Endif
Endif
Endif
Endif
Endif
Goto DamperControl
DamperControl:
' Outside (Supply) Air Damper
If INFINITY1 AH2OADmp.OVR.Cls then
OADmp = -On
Else
If INFINITY1 AH2OADmp.OVR.Opn then
OADmp = On
Else
If INFINITY1 Zone2.PRS or INFINITY1 Zone3.PRS or ~
INFINITY1 Zone4.PRS then
OADmp = On ' a zone in pressurization
Else
If INFINITY1 Zone2.EXH and INFINITY1 Zone3.EXH ~
and INFINITY1 Zone4.EXH then
OADmp = -On 'All zones in exhaust
Else
If INFINITY1 Zone2.SMK and INFINITY1 Zone3.SMK ~
and INFINITY1 Zone4.SMK then
OADmp = -On ' Close Damper all zones in smoke
5-57
Smoke Control Programs
Infinity Smoke Control Guide
TOC