Watts Industries Italia Srl
Watts EW089.308_en – rev.1
Gas detection Control Unit – CIVIC1
28/03/2011
Gas detection systems for industrial environments
4 of 4
TERMINAL MODULE
+ (TB1)
Power supply 12 Vac/dc (positive)
-
(TB1)
Power supply 12 Vac/dc (negative)
+ (TB3)
OC output 12 Vac/dc (positive)
-
(TB3)
OC output 12 Vac/dc (negative)
C
Alarm
Alarm relay output (common)
NC
Alarm
Alarm relay output (Normally Closed contact)
NO
Alarm
Alarm relay output (Normally Open contact)
UR13 detector connections
C Detector
input
(C, common)
S Detector input (S, signal)
A Detector input (A, power supply 6.5V)
UR20S detector connections
C Detector
input
(+12...…24V, negative power supply/signal)
S Detector
input
(+4...…20mA, positive signal)
A Detector
input
(+12…...24V, positive power supply/signal)
DESCRIPTION GAS DETECTION CONTROL UNIT
1
TB1 - Power supply terminals 12 Vac/dc
2
Protection fuse 1A
3
TB3 - “Failure” open collector terminals
4
TB2 - “Alarm” relay terminal block
5
LED signalling presence of current
6
LED failure alert
7
Gas alarm LED alert
8
Reset/Test button
9
TB4 - Gas detector connection terminals
10
Jumper E5
E6 for configuration of detector inputs:
E5 - Sel. power supply: A=6.5V (UR13), B=12V (UR20)
E6 - Sel. input A=threshold (UR13), B=4...20mA (UR20S)
11
Set-up jumper:
E1 – operating mode
E2 – Alarm relay operating mode
E3 – selection detector type: omitted=UR13, A=UR20S
E4 – available
12
Connector P1 (communication – not used)
13
CN1 connector and service Jumper J1
CONNECTION DIAGRAMS
Control unit with NA solenoid valve, negative mode.
N1
CIVIC1 control unit
B1
UR13 or UR20S detector
Y1
NA gas solenoid valve (Vaux: 24
230Vac)
L1
Failure alert device (12 V/300 mA max)
DIMENSIONS
CIVIC1 control unit
58
48
33
105
90
62
45
TB
1
TB
2
TB
3
CIVIC1
58
48
33
105
90
62
45
TB
1
TB
2
TB
3
58
48
33
105
90
62
45
TB
1
TB
2
TB
3
CIVIC1
UR13 (or UR20S) detectors
UR20S. detectors
Depending on model (see dedicated technical data sheet).
Installation data
Installer's stamp
Control unit installation date:
Detector replacement date:
+ -
NO C
S
A
C
NC
TB2
TB1
TB4
Allarme
+ -
TB3
+ -
NO C
NO C
S
A
C
NC
TB2
TB1
TB4
Allarme
+ -
TB3
Alarm
+
S A
C
-
NO
C
NC
S A
C
B1
12 Vac/dc
12 Vac/dc
N1
Y1
Vaux
Vaux
All
a
rme
+
-
L1
-1
2…
24
V
+4
…2
0
m
A
+1
2
…
2
4
V
URx20..
URx13
+
S A
C
-
NO
C
NC
S A
C
B1
12 Vac/dc
12 Vac/dc
N1
Y1
Vaux
Vaux
All
a
rme
+
-
L1
-1
2…
24
V
+4
…2
0
m
A
+1
2
…
2
4
V
URx20..
URx13
Alar
m
1
2
3
11
9
10
12
8
5
6
7
13
4
CIVIC1
1
1
2
2
3
3
11
9
9
10
12
8
8
5
5
6
6
7
7
13
4
4
CIVIC1
