73
IT
ES
ENG
. It.is.only.engaged.in.sequence/casca-
de.installations.with.several.boilers.
WARNING: All the above operations must
be performed by authorised personnel,
otherwise the warranty shall be invali-
dated.
3.2
TEMPERATURE PROBE
AND WATER PRESSURE
TRANSDUCER
Antifreeze. system. made. up. of. the. NTC.
heating. sensor. that. activates. when. the.
water.temperature.reaches.6°C..Tables
1 – 1/a.include.the.resistance.values.(Ω).
that.are.obtained.on.the.valve.when.the.
temperature.changes.and.those.on.the
transducer.when.pressure.changes.
The module does not work when the
heating probe (SM) is cut off.
3.3
ELECTRONIC IGNITION
Flame. detection. ignition. is. controlled.
by. two. electrodes. that. guarantee. maxi-
mum. safety. with. intervention. time,. for.
accidental. shutdowns. or. no. gas,. within.
1.second.
3.3.1 Operating cycle
Rotate.the.selector.to.summer.or.winter.
and. check. the. green. led. ( ). to. make.
sure. power. is. on.. The. burner. should.
ignite. within. max.. 10. seconds.. Failed.
ignition. consequently. lighting. the.
appliance.block.signal.may.occur.due.to.
the.following:
–. Ignition electrode does not spark
. Only.gas.is.supplied.to.the.boiler.and,.
after.10.sec.,.the.block.led.turns.on..
. It. may. be. caused. by. the. fact. that. the.
electrode. is. cut-off. or. is. not. secured.
in.the.ignition.transformer.terminal.
–. No flame detection
. At.ignition,.the.electrode.continues.to.
spark. even. though. the. burner. is. on..
After.10.sec..it.stops.sparking,.the.bur-
ner. turns. off. and. the. block. led. turns.
on..
. The. detection. electrode. wire. is. cut-
off. or. the. electrode. is. grounded;. the.
electrode.is.worn.and.requires.repla-
cement..The.electronic.board.is.defec-
tive..
A. sudden. blackout. immediately. turned.
off. the. burner,. when. power. is. restored,.
the.boiler.will.automatically.start..
3.4
AIR PRESSURE SWITCH
The.pressure.switch.signal.value.is.mea-
sured.by.a.specific.tool.connected.to.the.
positive.and.negative.pressure.fixtures..
The. pressure. switch. is. factory. set. to.
35-45.Pa.
3.5
AREA SYSTEM
ELECTRICAL
CONNECTIONS
For.the.“DEWY EQUIPE P100 BOX”.heat.
module. use. a. separate. electrical. line.
where. the. room. thermostats. with. rele-
vant.area.valves.or.pumps.must.be.con-
nected.
Switch. or. relay. contacts. must. be. con-
nected.to.the.electronic.board.connector.
(J2). after. removing. the. existent. bridge.
(fig..17).
CR1
CR
TA
(5)
SONDA
SANITARIO
CONNETTORE J2
COPERTURA
TA
(6)
SB
(11)
SB
(12)
CIRCUITO CON VALVOLE DI ZONA
NOTA: I relé vengono impiegati solo nel caso
le valvole di zona siano prive di micro.
L
N
TA
TA1
VZ
R
VZ1
R1
CIRCUITO CON POMPE DI ZONA
L
N
TA
TA
P
R
P1
R1
Fig..17
KEY
TA-TA1. Area.room.thermostat
VZ-VZ1. Area.valve
R-R1.
Area.relay
CR-CR1. Area.relay.contact.or.valve.switch.
P-P1.
Area.pump
TABLE 1 (Probe)
. Temperature.(°C).
Resistance.(Ω)
.
20.
12.090
.
30.
8.313
.
40.
5.828
.
50.
4.161
.
60.
3.021
.
70.
2.229
.
80.
1.669
TABLA 1/a (Transducer)
.
Pressure.
Resistance.(Ω)
.
(bar).
min..
max.
.
0.
297.
320
.
0,5.
260.
269.
.
1.
222.
228
.
1,5.
195.
200
.
2.
167.
173
.
2,5.
137.
143
.
3.
108.
113
.
3,5.
90.
94
COVER
CIRCUIT WITH AREA VALVES
CIRCUIT WITH AREA PUMPS
NOTE:.Relays.are.only.used.when.area.valves.
do.not.have.switches.
J2 CONNECTOR
HOT WATER
PROBE