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Direct Steam Injection Humidifier
Installation Instructions and User Manual
Page | 16
Stage 9 – ESC Device, Electrical Supply, and Control Connections
Any installation work must be carried out by suitably qualified personnel.
Electrical Connection
Position the ESC device in a safe, cool, and dry place.
Refer to the ESC (Electronic Steam Controller) manual and
Illustration 27 - ESC Wiring
Diagram to connect all the components to the ESC.
Make all the electrical connections required on the ESC.
Illustration 27 - ESC Wiring Diagram
ESC
TB9
TB
5
TB
8
T
B1
0
Ana
log
Out
p
ut
s
Te
m
p
e
ra
ture
S
e
ns
or In
pu
ts
A
n
a
log
I
n
pu
ts
24VAC
AO1
COM
AO2
AI1
COM
AI2
AI3
COM
AI4
TS1
COM
TS2
TS3
COM
TS4
TS5
COM
TS6
1
2
3
1
2 3
1
2
3
1
2
3
1
2
3
TB1
1
TB1
2
T
B
1
3
1
2
3
1
2
3
1
2
3
4
1
2
3
4
5
6
1
2 3
4
5
NC
KCOM
NO
24VAC
COM
NC
KCOM
NO
TB
4
TB
2
TB3
TB1
TO3
COM
TO2
COM
TO1
24VAC
DI4
DI3
COM
DI2
DI1
Sup
p
ly
St
ea
m
Re
la
y
Al
ar
m
Rel
a
y
Dig
ita
l I
n
put
Temperature Sensor Separator
Temperature Sensor Jacket 2
Temperature Sensor Jacket 1
Temperature Sensor Jacket 5
Temperature Sensor Jacket 3
J1
Common
S1
J3
Common
J2
J4
J5
Common
External Demand/Setpoint
1
Room Humidity Sensor
High Limit Humidity Sensor
2
0 – 10
Volts
Steam Control Valve
Actuator
AM060-ESC
Common -1
24 Vac -2
Control Signal -3
Not used -4
Not used -5
Interlock
PD Switch On/Off
Humidity Demand On/Off
High Limit (digital)
2
NC
NC
NO
NO
Control Valve Signal
Common
Isolating Valve
Actuator
AT060-ESC
1- Common
2- Not used
3- Control Signal
4- 24 Vac
Alarm Relay
Steam on Relay Status
On/
O
ff
LEGEND
S = Separator
J = Jacket
NO = Normally Open
NC = Normally Close
1
2
3
4
24 Vac
24 Vac
Isolating Valve Signal
Common
24 Vac
Common
or
24 Vac
1
2
3 4
5
IN A+
IN B-
COM
OUT A+
OUT B-
TB
7
Ne
tw
ork
*
*Network available only on ESCB or ESCD
Temperature Sensor Jacket 4
