DriSteem Vapor-logic 4 User Manual

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To start up your humidifier, go to the Start-up Checklist in your
humidifier’s Installation, Operation, and Maintenance manual.
Staging multiple XT humidifiers
Up to four XT electrode steam humidifiers can be staged to
operate in sequence. In a sequenced application, one control input
signal is divided by user-selectable settings among the humidifiers
connected in sequence. See the Vapor-logic4 board connection
points in Figure 37-1.
Control input examples
Table 37-1:
Control input example for four XT humidifiers in sequence
XT
humidifier
Control
input
Result
H-1 (primary)
Any valid
Vapor-logic4
control input
0 to 100% steam output corresponding to 4–20 mA
or 0–10 VDC control signal
H-2 (staged) 4–6 VDC* 0 to 100% steam output scaled across 4–6 VDC range
H-3 (staged) 6–8 VDC* 0 to 100% steam output scaled across 6–8 VDC range
H-4 (staged) 8–10 VDC* 0 to 100% steam output scaled across 8–10 VDC range
* User-selectable, 0–10 VDC in 0.1 V increments.
Table 37-2:
Control input example for two XT humidifiers in sequence
XT
humidifier
Control
input
Result
H-1 (primary)
Any valid
Vapor-logic4
control input
0 to 100% steam output corresponding to 4–20 mA
or 0 to 10 VDC control signal
H-2 (staged) 5–10 VDC* 0 to 100% steam output scaled across 5–10 VDC range
* User-selectable, 0–10 VDC in 0.1 V increments.
Setting control input ranges
1. Using the keypad/display or Web interface, go to the Tank
setup menu, then select Input signal, then Demand signal.
2. Select Yes to enable user input.
3. Scroll down to select the range for each staged input.
4. Press the Enter key to confirm selections.
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Installation
Figure 37-1:
Vapor-logic4 board connections for
staging multiple XT humidifiers
Connect Steam to RH
connection points of
staged humidifiers.
Primary XT humidifier (H-1) board
Corner of Vapor-logic4 board opposite from Ethernet
connection shown
Connect Ground ( )
to Ground connection
points of staged
humidifiers.
Multi-tank mode
XT humidifiers do not operate in multi-tank
mode. See “Multiple-tank operation” on Page 77.
Contact DRI-STEEM if you need assistance
staging XT humidifiers. See “Calling DRI-STEEM
Technical Support” on Page 84.

DriSteem Vapor-logic 4 Specifications

General

Brand	DriSteem
Model	Vapor-logic 4
Category	Controller
Language	English