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,
.
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
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:
• 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.
Humidity Reading
Summary of Contents for BAYSTAT152A
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