DriSteem Vapor-logic 4 User Manual

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Airflow proving switch
Connect wiring for a duct, Space Distribution Unit (SDU) airflow
proving switch by inserting wires into the terminal block plug at
P13 (labeled AFsw and 24) per the wiring diagram on the next
page. Tighten screws; maximum torque is 3 in-lb (0.34 N-m).
(An SDU is a cabinet fan dispersion assembly.)
See also “Sensor placement” on Page 26.
Duct high limit switch or transmitter
Connect wiring for a duct high limit switch or transmitter by
inserting wires into the terminal block plug at P13 (labeled DHL
and 24) per the wiring diagram on the previous page. Tighten
screws; maximum torque is 3 in-lb (0.34 N-m).
Note: The duct high limit sensor connected at this location can
be an on-off high limit switch, or it can be a duct high limit
transmitter with an adjustable high limit set point (4-20 mA input).
See also “Sensor placement” on Page 26.
Terminal P13
Figure 16-1:
Terminal P13
Terminal P13:
24VDC = Power to duct high limit switch or transmitter
DHL = Duct high limit switch/transm. (4-20 mA input)
24
VAC = Power to airflow proving switch
AFsw = Airflow proving switch (24 VAC Input)
Installation

DriSteem Vapor-logic 4 Specifications

General

Brand	DriSteem
Model	Vapor-logic 4
Category	Controller
Language	English