Supply Cables And External Connections Passage; Calibration Of The Thermal Relay - Riello RS 28/M Installation, Use And Maintenance Instructions

4.10.2 Supply cables and external connections
passage
All the cables to be connected to the burner are fed through the
holes of the right and left plates after unscrewing the screws 8) and
opening the pre-trimmed hole (Fig. 19). The use of the cable grom-
mets can take various forms. By way of example we indicate the
following mode (according to UL795):
1 three phase power supply with
2 Available: single phase power supply and other devices
3 Available: consents/safety, minimum gas pressure switch, gas
valves, pilot valves and other devices
3
All holes have a / inch dimension.
8
8
3
2
1
8
4.11

Calibration of the thermal relay

The thermal relay (Fig. 20) serves to avoid damage to the motor
due to an excessive absorption increase or if a phase is missing.
For calibration 2), refer to the table indicated in the electrical layout
(electrical wiring in charge of the installer).
To reset, in case of an intervention of the thermal relay, press but-
ton "RESET" 1).
The button "STOP" 3) opens the NC contact (95-96) and stops the
motor.
Insert a screwdriver in the window "TEST/TRIP" 4) and move it in
the arrow direction (to the right) to carry out the thermal relay test.
The automatic reset can be dangerous.
This operation is not foreseen in the burner oper-
ation.
WARNING
Installation
3
/ inch cable grommet
8
20183587
21
The control panel is in compliance with UL508A.
WARNING
After carrying out maintenance, cleaning or check-
ing operations, reassemble the hood and all the
safety and protection devices of the burner.
GB
8
3
2
1
8
D8685
3
T O
I P
A U
/ T R
N
S T
M A O P
T E
S T
T
S E
R E N C
9 5
9 6
N O
9 7
9 8
4 2 1
Fig. 19
Fig. 20
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