Ferroli RVL-I PLUS, Installation And Maintenance Manual

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Electrical booster
User interface
Safety thermal switch of the electrical booster
Connect to these
terminals the safety thermal switch
of the electrical booster IBH
HBK1 HBK2
35 36
ATCO
It must be connected to thermal protector!
If these 2 terminals are closed, it is possible to power the 2 relays of the hydronic bo-
ard that manage IBH1 and IBH2 . So, if these 2 terminals are open (for example if the
thermal protector is open for overtemperature), IBH1 and IBH2 can not work . If the
booster is not equipped with thermal switch output (alarm), these two terminals must
be bridged .
The unit can manage an electrical booster (as backup hater) with
2 stages (for example 2 electrical heater 1 .5 kW) . Connect to IBH1
the stage 1, to IBH2 the stage 2 . If the booster has only one stage
connect it to IBH1 .
IBH1
IBH1
CONTROL SIGNAL OUTPUT
H1 N
31
39
IBH2
IBH2
（
reserved
）
CONTROL SIGNAL OUTPUT
H2 N
32
39
IBH1
CONTROL SIGNAL OUTPUT
STAGE 1
IBH1 IBH2
“PLEASE USE SHIELDED WIRE AND EARTH THE WIRE .”
IBH2
CONTROL SIGNAL OUTPUT
STAGE 2
A B X Y E
1 2 3 4 5
XT6
A
B
X
Y
E
COMMUNICATION
COMMUNICATION
As described above, during wiring, port A in the unit termi-
nal XT6 corresponds to port A in the user interface . Port B
corresponds to port B . Port X corresponds to port X . Port Y
corresponds to port Y, and port E corresponds to port E . .
Procedure:
1 . Remove the rear part of the user interface .
2 . Connect the cable to the appropriate terminals as shown
in the picture
3 . Reattach the rear part of the user interface
Wire type 5 wire shielded cable
Wire section
AWG18-AWG16(0 .75~1 .25mm2)
Maximum wire length 50m
This equipment supports MODBUS RTU communication
protocol .
NOTE
ELECTRICAL CONNECTIONS