Installation guide

DRI-STEEM Vapor-logic 3 *OTUBMMBUJPOBOE0QFSBUJPO.BOVBMt1BHF
Changing control input
You can configure the control input on the Vapor-logic
3 board to
read either an external demand signal or RH signal. It also can read
different types of analog signals from building automation systems,
humidistats, or RH transmitters. Follow these steps when a signal
change is needed:
1. Remove the old signal wires from the control board (terminals
21, 22, and 23).
2. Refer to the configuration string text o
n Pages 32 and 33. Refer
to: “K. Type of humidity sensing device” to identify the new
signal that is needed.
3. Enter the Set Up menu on the Vapor-logic
3 keypad and scroll to
the Configuration String screen.
4. Change the last character in the configuration string to the
desired input signal type identified from the configuration string
information on Pages 32 and 33.
5. Adjust the shunt connector J14/J17 to the proper signal type, if
necessary (see Page 13):
 t *GUIFTJHOBMJTFMFDUSJDBMDVSSFOUUIFKVNQFSTI
ould be on I.
 t *GUIFTJHOBMJTWPMUBHFUIFKVNQFSTIPVMECFPO7
 t *GUIFTJHOBMJTSFTJTUBODFPSPOPGGUIFKVNQFSTIPVMECFPO3
6. Connect the new signal wires to the board per the external
connections diagram.
8JSJOHTFOTPSEFWJDFTDPOUJOVFE
Figure 31-1:
Vapor-logic
3 main control board detail
VL3-OM-010B
J19 J16
R
I
V
R
I
V
J18 J15
R
I
V
J17 J14
Jumper connectors:
R = Resistive input
I = Current input
V = Voltage input
VL3_IOM.pdf 35 11/19/2009 9:11:13 AM