Calibration Of The Thermal Relay - Riello RS 44/E MZ Installation, Use And Maintenance Instructions

Installation
4
All cables to connect to the burner are connected to the appropriate
sockets on the side of the burner (use the supplied plugs for the
connections).
The use of the cable grommets can take various forms. By way of
example we indicate the following mode:
RS 34-44/E MZ single 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 the
valve leak detection device
3- 4 pole socket for thermostat/pressure switch TR (with
removable cover)
4- 5 pole socket not used
5- 2 pole socket for maximum gas pressure switch accessory
6 - 6A Prepared for pipe unions
(Drill if 6A pipe unions are required)
RS 44/E MZ three-phase
1- 7 pole socket for single phase power supply, thermostat/
pressure switch TL
2- 6 pole socket for gas valve, gas pressure switch or the
valve leak detection device
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 maximum gas pressure switch accessory
6 - 6A Prepared for pipe unions
(Drill if 6A pipe unions are required)
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
DANGER
responsibility for the failure to observe the contents of
this manual.
NOTE
The RS 44/E MZ three-phase model leaves the factory for 400V power supplies. If the power supply is 230V, change the motor connec-
tion (from star to triangle) and the calibration of the thermal relay.
MODULATING OPERATION
If connecting the output power regulator kit RWF40, the TR thermostat/pressure switch and the TL thermostat/pressure switch must be
removed (if the 4-pole socket becomes unhooked, apply the supplied cover).
4.9 Calibration of the thermal relay (for the RS 44/E MZ three-phase model only)
The thermal relay is used to avoid damage to the motor owing to a strong
increase in absorption or the lack of a phase.
For the calibration, refer to the table given in electrical layout no. 6 in Appendix
A.
If the minimum value of the scale of the thermal relay is greater than the rating
absorption of the motor, protection is still ensured. This arises when the power
supply of the motor is 400V.
To reset, in case of an intervention of the thermal relay, press button 1) of
Fig. 22.
20052930
D8267
19
GB
6A
5
4
3
2
1
6
3
20052852
Fig. 21
2
1
Fig. 22
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