Specifications

Enabling Wall Switch
11
Siemens Industry, Inc.
140-0893 Start-up
Draft
1/12/2010
Enabling Wall Switch
If a wall switch is used for day/night control, enable it by setting WALL SWITCH to
YES. In addition, UI 2 must be configured for digital input (set to 0).
Otherwise, leave WALL SWITCH at its default value of NO.
If WALL SWITCH is not enabled, UI 2 can be used as a Spare (Analog or Digital).
Setting Duct Area
If provided, enter the duct area (sq ft or sq m) into DUCT AREA (and also into
HTGDUCT AREA, where applicable) and continue to Setting Flow Coefficient.
If you do not know the duct area, use the following table:
Area =
Round Duct
Rectangular Duct
Area in Sq. Ft.
(Dimensions in inches)
(π x R
2
)/144 Width x Height ∕144
Area in Sq. M
(Dimensions in centimeters)
(π x R
2
)/10,000 Width x Height∕10,000