EsiWelma s.r.l.
rev. 00 of 01-09-10 / pg. 3
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Electrical Installation
Make sure the wiring conforms to the standards in
force.
The devices must be connected to the mains power
supply and remain permanently powered.
Omnipolar disconnection must be included in the
mains.
Some possible wiring diagrams:
Example a):
- Command of an audible alarm from a
detection point.
Example b):
- Command of a visual alarm from
several detection points.
Operator interface
Commissioning
Power-up the detector by holding the (power) button pressed for about 2 seconds and check that the display
shows the measurements in the format as above.
To select the threshold set-points and the set-points for all the other parameters, first press the selection
(switch) and then the (up) and (down) buttons to set the value for each one.
The set-points can only be changed if its value is flashing; to rapidly increase the set-points, hold the (down)
or (up) button pressed for more than 3 seconds.
After selecting and changing the set-points and any other parameters, lock them in so they are not
accidentally changed by pressing the (down) and (up) buttons together and holding them down for more than
5 seconds; the set-points are locked in when the display shows this symbol .
To restore the possibility of changing set-points, once more press down on the (down) and (up) buttons at the
same time; the set-points can be changed when the display no longer shows this symbol .
Carry out an operational test using a CO
2
gas canister with dosage valve; release a small amount of gas
close to the grille below and control the correct engagement of the command and/or alarm device connected
to the relay as well as the appearance on the display of the symbol
.
It is advisable to repeat the operational test at least once a year, or after a prolonged period of stoppage.
If other test methods are used instead of the one described the detector may generate different, unexpected
responses. In particular, the use of inappropriate substances or vapours (alcohol or silicon-based solvents
etc.) or in any case, high concentrations of test gases could cause permanent damage to the sensing element
and may cause the detector to operate incorrectly.
The detector needs no periodic maintenance, with the exception of the periodic operational test and its repla-
cement 15 years after the installation date.
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230Vac or 115Vac or 24Vac/dc
a)
1 (L)
2 (N)
ESN.F.D..
7 (C)
6 (NO)
230Vac or 115Vac or 24Vac/dc
b)
1 (L)
2 (N)
ESN.F.D..
7 (C)
6 (NO)
1 (L)
2 (N)
ESN.F.D..
7 (C)
6 (NO)
Power
On/Off
Do
wn
(D
ecr
ease)
Up
(I
ncr
ease)
Sel
e
ct
(S
wit
c
h
)
Humidity
Temperature
Lock Set
point data
Status
of relay
Carbon Dioxide
