Appendix - Riello RS 25/M BLU Installation, Use And Maintenance Instructions

3
20052141
The socket cover must only be removed when the 4-pole socket is in use.
When the 4-pole socket is not in use the cover must be in place.
The manufacturer furthermore declines any and every responsibility for the failure to observe the contents of this manual.
DANGER
D867

APPENDIX

Electrical connections
6
NOTES
The electrical wirings must be carried out in conform-
ity with the regulations in force in the countries of
destination, and by qualified personnel.
Riello S.p.A. cannot accept any responsibility for
modifications or connections other than those shown
in these diagrams.
Use flexible cables, in accordance with the regulation
EN 60 335-1.
6A
All the cables to be connected to the burner must
pass through cable grommets.
5
The use of cable grommets can take various forms;
4
the following way is just one possible solution:
RS 25-35/M BLU single phase
3
1- 7 pole socket for single phase power supply, thermostat/
pressure switch TL
2
2- 6 pole socket for gas valves, gas pressure switch or
device for checking the valve seal
3- 4 pole socket for thermostat/pressure switch TR (with
1
removable cover)
4- 5 pole socket, not used
5- 2-pole socket for max gas pressure switch accessory
6 - 6A Fittings for pipe unions
(Pierce, if it is necessary to use the pipe unions 6A)
RS 35/M BLU three phase
1- 7 pole socket for single-phase power supply, thermostat/
pressure switch TL
2- 6 pole socket for gas valves, gas pressure switch or
device for checking the valve seal
3- 4 pole socket for thermostat/pressure switch TR (with
removable cover)
4- 5 pole socket for three phase power supply
5- 2-pole socket for max gas pressure switch accessory
6 - 6A Fittings for pipe unions
(Pierce, if it is necessary to use the pipe unions 6A)
ADJUSTMENT OF THERMAL RELAY (RS 35/M BLU THREE
PHASE)
Used to avoid the burning of the motor owing to a strong increase
in the absorption, caused by the lack of a phase.
• If the motor is star-driven, 400V, the cursor must be positioned
on "MIN".
• If it is delta-driven, 230V, the cursor is positioned on "MAX".
If the scale of the thermal relay does not include the absorption of
rating of the motor at 400V, the protection is guaranteed anyway.
22