TAC Pneumatic Products Catalog

AL-19x Series
Typical Applications
Port 2
N.C.
M
AL-191
(120 V)
Port 1
Common
Red Leads
Port 3
N.O.
Exhaust
Branch (output) of mixed
air temperature controller
Typical Schematic Diagram
Motor Starter
Figure 1 Typical Application Wiring Diagram.
(Air-Handling Unit Application)
22 © Copyright 2006 TAC. All Rights Reserved. F-27383-1
A
O
C
Green Lead
H
PE
(N.O.) 1
X1
Room Humidistat
(R.A.)
H 1
M B
MB
M 1
B
M S
M 4
120V
H G
L1 L2 L3
M
Supply
Fan Motor
Humidifier
Fan
To N.C. Steam
Humidifier
Outside Air
Damper (N.C.)
8-13 psi (Typical)
To Return (M2)
Damper (N.O.)
Positioner
To Relief (M3)
Damper (N.C.)
8-13 psi
Exhaust Damper