Brochure

S52x Series, S53x Series, S54x Series (239X-500 Series)
118
© Copyright 2006 TAC. All Rights Reserved. F-27383-1
Typical Applications
Figure 1 Automatic or Manual Changeover of Day/Night System.
Figure 2 Internal Port Connections.
5432
M M
1
BM
From Timer
& E/P Relay
(16 psig day,
25 psig night)
2 2
1
2
1 Selector Switch
with Day-Auto-
Night Dial
2 Supplied from an E/P relay controlled by a programmed timer.
Switch
Position
Ports
Connected
Day Night
Thermostat Supply Pressure
1 16 psig
–1 & 5
2 16 psig
25 psig2 & 5
3–
25 psig3 & 5
To Final
Control Devices
25psig
16psig
12
5
4
3
12
5
4
3
12
5
4
3
12
5
4
3
12
5
4
3
12
5
4
3
12
3
4
5
12
5
4
3
12
5
4
3
S5
2
0
Port
5
blocke
d
S530
Ports not connected to
5
blocke
d
S5
4
0
Ports not connected to
5
blocke
d
12
5
4
3
12
5
4
3
12
5
4
3
12
5
4
3
12
5
4
3
12
5
4
3
12
5
4
3
12
5
4
3
12
5
4
3
S5
2
1
Po
rt 1
Po
rt
2
b
lo
c
k
ed b
lo
c
k
ed
S531
Ports not connected to
5
vente
d
S5
41
Ports not connected to
5
vente
d