Electrical System - Riello RL 28 Installation, Use And Maintenance Instructions

ELECTRICAL EQUIPMENT FACTORY-SET
RL 28
(A)
ELECTRICAL EQUIPMENT FACTORY-SET
RL 38 single-phase
(B)
ELECTRICAL EQUIPMENT FACTORY-SET
RL 38 three-phase - RL 50
(C)

ELECTRICAL SYSTEM

ELECTRICAL SYSTEM as set up by the manu-
facturer
LAYOUT (A)
Burner RL 28 (single-phase)
LAYOUT (B)
Burner RL 38 (single-phase)
LAYOUT (C)
Burners RL 38 - 50 (three-phase)
• Models RL 38 three-phase and RL 50 leave
the factory preset for 400 V power supply.
• If 230 V power supply is used, change the mo-
tor connection from star to delta and change
the setting of the thermal cut-out as well.
Key to Layouts (A) - (B) - (C)
C
CMV
FR
I1
D3231
I2
MV
RMO88.53A2 - Control box
RT
TA
TB
V1
V2
VS
XP1
XP4
XP5
XP7
NOTE
For remote-reset, connect a push-button switch
(NO) between terminal 4 and neutral of the con-
trol box (terminals 15, 16, 17 and 18).
D3230
D3227
8
- Capacitor
- Motor contactor
- Photocell
- Switch:
burner off - on
- Switch:
1st - 2nd stage operation
- Fan motor
- Thermal cut-out
- Ignition transformer
- Burner ground (earth) connec-
tion
- 1st stage solenoid valve
- 2nd stage solenoid valve
- Safety solenoid valve
- Connector for STATUS
- 4 pole socket
- 5 pole socket
- 7 pole socket