Brochure

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