Electrical System - Riello 3473280 Installation, Use And Maintenance Instructions

ELECTRICAL EQUIPMENT FACTORY-SET
RL 28 single-phase
(A)
RL 38 single-phase
(B)
RL 38 - RL 50 three-phase
(C)
MOTOR CONNECTION
RL 38 - RL 50 three-phase
D3149
208V 380V
230V 460V

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 and RL 50 leave the factory
preset for 380-460 V power supply.
• If 208-230 V power supply is used, change
the motor connection from star
star
ting of the thermal cut-out as well.
Key to Layouts (A) - (B) - (C)
C
CMV
20083053
FR
I1
I2
MV
RMO88.53A2 - Control box
RT
TA
TB
V1
V2
VS
XP4
XP5
XP7
NOTE
For remote-reset, connect a push-button switch
(NO) between terminal 3 and neutral of the con-
trol box (terminals 15, 16, 17 and 18).
20083052
20083051
8
to double
, see Fig. (D), and change the set-
- 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
- 4 pole socket
- 5 pole socket
- 7 pole socket