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6CIVIC1-MOI-IT-W-ML-09-18-Rev.1
Watts Water Technologies, Inc.
EN
Caution The average lifetime of the UR13 and UR20S detec-
tors is 5 years from installation date. They must be replaced
before the end of the 5th year of use. The average lifetime of
detectors is calculated for use in a typical environment, nor-
mally free from polluting agents (gases, solvents etc.).
More frequent and higher concentrations of these substances
can accelerate the normal oxidisation process of the sensing
element, subsequently shotening its lifetime.
Gas Alarm
If an alarm signals a gas leak or the presence of carbon
monoxide, proceed as follows:
- put out flames and switch off all gas equipment;
- do not for any reason switch on or off lights or any electrical
equipment;
- open doors and windows to air the environment;
- look for and eliminate the cause of the alarm. If this is not
possible, leave the building and contact emergency services
from outside.
Environmental compatibility and
disposal
This product has been designed and constructed
using materials and processes that take into ac-
count the environmental issue. Refer to the following
notes for disposal of the product at the end of its
working life, or when it is replaced:
- for disposal purposes, this product is classified as an
electric and electronic device: do not dispose of it with
normal household waste, in particular as regards the printed
circuit;
- comply with all local laws in force;
- as far as possible reuse basic materials to keep
environmental impact to a minimum;
- use local depots and waste recycling companies, or contact
the supplier or manufacturer to return used products or to
ask for information on environmental compatibility and waste
disposal;
- the product packaging can be reused. Keep it for future use
or to return the product to the supplier.
Problem Possible cause
NC valve does not open
- Valve not connected
- Alarm in progress
- Detector warm-up phase in
progress
- Defective detector
- Presence of failure
NO valve does not close
- Valve not connected
- Connection cables cut
- No alarm active
“Reset/Test” button
does not reset to initial
conditions
- Alarm in progress
- Failure occurring in control unit
Troubleshooting
+ (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)
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
Terminal board
Description gas detection contro unit
6


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