71
IT
ES
ENG
Module. are. electrically. connected. to. the. terminal.
board.in.the.shunt.box.
Insert. the. rubber. pipe. of. the. module. that. has. to. be.
connected. into. the. corresponding. hole. on. the. box.
wall..Perform.the.wiring.connections.to.the.junction.
box.as.shown.in.the.layout.of.figure.7/b..
Fix. the. rubber. pipe. to. the. internal. wall. of. the. box.
using.the.straps.provided..
Fig..12
3.1
ELECTRONIC BOARD
Built.according.to.Low.Voltage.directive.
2014/35/UE.and.powered.at.230.Volt,.via.
a.transformer.it.sends.24.Volt.power.to.
the. following. components:. gas. valve,.
safety. thermostat,. heating. probe,. water.
pressure. transducer. and. air. pressure.
switch.
An. automatic. and. continual. modulation.
system.permits.the.boiler.to.adjust.power.
to.the.various.system.or.user.needs.
Electronic. components. are. guaranteed.
to.operate.in.a.temperature.range.from.
0.to.+60°C.
3.1.1 Malfunctions
The.led.that.signal.errors.and/or.malfun-
ctions.are.indicated.in.fig..14.
3.1.2 Devices
The.electronic.board.is.equipped.with.the.
following.devices:
–. “POT. RISC.” trimmer (10.fig..15)
. Adjusts.maximum.heating.power.
. To.increase.the.value,.rotate.the.trim-
mer.clockwise,.to.reduce.it,.rotate.the.
trimmer.counter-clockwise.
–. “POT. ACC.” trimmer (6.fig..15)
. Trimmer.to.vary.the.gas.valve.ignition.
pressure. level. (STEP).. According. to.
the. type. of. gas. the. boiler. is. designed.
for,. the. trimmer. must. be. adjusted. to.
achieve. a. burner. pressure. of. appro-
ximately. 6.5. mm. H
2
O. for. methane.
gas.and.9.5.mm.H
2
O.for.propane.gas.
(G31).
. To.increase.pressure,.rotate.the.trim-
mer. clockwise,. to. reduce. it,. rotate.
the. trimmer. counter-clockwise.. The.
slow.ignition.pressure.level.can.be.set.
during.the.first.five.seconds.after.the.
burner.is.lit.
After setting the ignition pressure
level (STEP) according to the type of
gas, make sure that the heating gas
pressure is still the previously set
value.
–. .“ANN. RIT.” connector (5.fig..15)
. The. electronic. board. is. programmed,.
during.heating,.with.a.technical.burner.
delay.of.about.90.seconds.that.is.per-
formed. both. at. cold. start. and. subse-
quent.ignitions..This.is.to.prevent.rapid.
ignitions. and. shutdowns. that. could,.
in. particular,. occur. in. systems. with.
high. load. losses.. Each. time. the. boiler.
restarts,. after. the. slow. ignition,. for.
about.1.minute.it.will.run.at.minimum.
modulation.pressure.before.moving.to.
the. set. heating. pressure.. The. addi-
tion. of. a. bridge. will. cancel. both. the.
programmed. technical. delay. and. the.
minimum.pressure.operating.period.at.
ignition..In.this.case,.the.time.between.
shutdown. and. the. next. ignition. will.
depend. on. a. 5°C. differential. detected.
by.the.heating.probe.(SM).
–. DIP SWITCH (13.fig..15)
. For.correct.module.operations,.the.dip.
switches.must.be.positioned.as.indica-
ted.below:
–. “Modureg Sel.” connector (14.fig..15)
. The.bridge.must.always.be.connected.
–. “Albatros” connector (15.fig..15)
. The.bridge.must.always.be.off.
3
FEATURES
2.10.2 “DEWY EQUIPE P200-P300-P400-P500-P600 BOX” sequence/cascade electrical connections
Fig..12/a
2.10.3 Installing cascade/sequence control unit supplied with kit code 8096301/08
Remove. the. two. upper. screws. from. the. shunt.
box. supplied. with. the. box. and. adjust. the. box.
cover.downwards..Remove.the.black.orifice.cap.
and.insert.regulator.RVA.47..Connect.regulator.
RVA. 47. to. the. power. supply,. as. shown. in. the.
layout.of.Figure.7/b..After.completing.the.con-
nection,.close.the.box.cover..
