BAS-SVX44C-EN 41
Other Thermostat Functions
Local/Remote Humidity Display and Control
The thermostat has the capability of displaying the local/remote humidity readings, depending on the value
setting for Configuration Option Number 0200. An external humidity sensor is connected to terminal Hp(+)
and Hs(-). The table that follows provides information about humidity sensor selection. For details about
setting or changing dehumidification, refer to the section,
“Dehumidify Setup,” p. 29.
Option Number
0200
Installer Parameter Number Value Description
General Information: For external humidity control, a 4–20 mA humidity sensor must be connected to the Hp and HS terminals. Terminal Hp
provides a 24 Vdc nominal to the external humidity sensor. Refer to
Table 9, p. 42 below.
0
No humidity display.
1
Internal humidity sensor is used for control:
(a)
• 0% to 4% and 96% to 99% humidity; blinks the humidity reading and equipment runs for the 96% to
99%.
• 100% humidity; blinks 99 for humidity reading, blinks error code E1, and dehumidify equipment is ON.
• Communication down or invalid; blinks “--”, blinks error code E1, and dehumidify equipment is OFF.
(a) Blink rate for humidity display 0% to 4%, 96% to 100%, and “--” is 1.5 seconds ON and 0.5 seconds OFF. Blink rate for error code E1 is 3
seconds Error code display and 1 second Time Display.
2
External humidity sensor is enabled:
(a)
• 96% to 99%; blinks humidity reading and dehumidify function is ON because of setpoint.
• 100%; blinks 99% for humidity reading and blinks error code E1. The dehumidify equipment is ON.
• 0% to 4%; blinks humidity reading dehumidify functions is OFF because of setpoint.
• Current less than 4 mA; blinks “--”, blinks error code E1, and dehumidify equipment is OFF.
Other related Option Numbers
0205; Dehumidification Control
0
Active control. The thermostat will toggle the Dh output terminal ON if humidity sensor value is 5% above setpoint and
toggle OFF when the humidity sensor value drop 5% below setpoint.
1
Passive control. The thermostat will run cool mode for up to 1 extra minute whenever there is a call for cooling and a call
for dehumidification.
0206; Internal Humidity Offset Adjustment: Allows adjustment of the internal relative humidity reading to account for accuracy, tolerance,
and potential drift. Firmware uses the adjusted value for display and humidity control.
-9% to 9% in 1% increments.
0207; External Humidity Offset Adjustment: Allows adjustment of the external relative humidity reading to account for accuracy, tolerance,
and potential drift. Firmware uses the adjusted value for display and humidity control.
-9% to 9% in 1% increments.
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