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

RL 28/M
(A)
RL 38 - 50/M
(B)
(C)
MOTOR CONNECTION
RL 38/M - RL 50/M
(D)
D864
D3149
208V 380V
230V 460V

ELECTRICAL SYSTEM

manufacturer
LAYOUT (A)
Burner RL 28/M
LAYOUT (B)
Burners RL 38/M - 50/M
• Models RL 38/M and RL 50/M leave the fac-
tory 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 Layout (A) - (B)
C
CMV
LAL 1.25 - Control box
F1
FR
MB
MV
PO
RT
S1
D862
S2
SM
TA
TB
VM
VS
VU
ELECTRICAL CONNECTIONS 
set by installer
Use flexible cables according to regulation EN
60 335-1:
• if in PVC boot, use at least H05 VV-F
• if in rubber boot, use at least H05 RR-F.
All the cables to be connected to the burner ter-
minal strip 5)(C) must be routed through the fair-
leads, supplied by the manufacturer for insertion
into the holes in the plate, preferably those on the
left side, after having unscrewed screws 6), split
the plate into its two parts 7) and 8) then re-
moved the thin diaphragm effectively closing the
D863
aperture.
The fair leads and precut holes can be used in
various ways. One example is given below:
RL 28/M
1 - Pg 11 Single-phase power supply
3 - Pg 9
4 - Pg 9
RL 38/M - 50/M
1 - Pg 11 Three-phase power supply
2 - Pg 11 Single-phase power supply
3 - Pg 9
4 - Pg 9
7
as set up by the
to double
, see Fig. (D), and change the set-
- Capacitor
- Motor contactor
- Protection against radio interference
- Photocell
- Terminal strip
- Fan motor
- Oil pressure switch
- Thermal cut-out
- Switch for following operations :
MAN = manual
AUT = automatic
OFF
- Button for :
- = power reduction
+ = power increase
- Servomotor
- Ignition transformer
- Burner ground (earth) connection
- Delivery pump valve
- Delivery pump valve (safety valve)
- Valve on nozzle return
Control device TL
Control device TR or probe (RWF40)
Control device TL
Control device TR or probe (RWF40)