The Supply VAV air damper device mode (VavSuDevMod) is a multistate value that supports the following states:

  • Off
  • Control mode (modulation)
  • Maximum air volume flow
  • Minimum air volume flow
  • Smoke air volume flow setpoint

 

(Dual duct VAV boxes only) For a dual duct VAV box, see table for Duct 1 and Duct 2 supply damper behavior:

Device mode

Duct 1

Duct 2

1:Off

Setpoint is zero

Setpoint is zero

2:Control mode

Follows demand

Follows demand

3:Max.air vol.flow

Select from h/c maximum according to VavSuChovrCnd1:
- Neither (Vent max)
- Cooling (Cooling max)
- Heating (Heating max)
- Neutral (max of Cooling max and Heating max)

Select from h/c maximum according to VavSuChovrCnd2:
- Neither (Vent max)
- Cooling (Cooling max)
- Heating (Heating max)
- Neutral (max of Cooling max and Heating max)

4:Min.air vol.flow

Select from h/c minimum according to VavSuChovrCnd1:
- Neither (Vent min)
- Cooling (Cooling min)
- Heating (Heating min)
- Neutral (max of Cooling min and Heating min)

Select from h/c minimum according to VavSuChovrCnd2:
- Neither (Vent min)
- Cooling (Cooling min)
- Heating (Heating min)
- Neutral (max of Cooling min and Heating min)

5:Smoke ctrl.air flow setp

Setpoint is smoke value
(common setpoint for both ducts)

Setpoint is smoke value
(common setpoint for both ducts)