(A)
Model
RL 190 - 220 V
RL 190 - 380 V
(B)
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RL 190
208-230 V 380-460 V
A gG/gL
25
F
A aM
20
L
2,5
2
mm
Thermal relay adjustment
16 A
9.5 A
8
LAYOUT (A)
RL 190 electrical connection three-phase 230/
400 V power supply with neutral phase wire
Fuses and cables section layout (A), see table.
Key to wiring layouts (A)
h1 - 1st stage hourcounter
h2 - 2nd stage hourcounter
IN - Manual burner stop switch
MB - Terminal strip
S
- Remote lock-out signal
TB - Burner ground (earth) connection
TL - Limit control device system:
D3291
This shuts down the burner when the boiler
temperature or pressure exceeds the set-
point value.
TR - High-low mode control device system:
This controls operating stages 1 and 2 and
is necessary only for two-stage operation.
TS - Safety control device system:
This operates when TL is faulty.
Important: the burner is factory set for two-
stage operation and it must therefore be con-
nected to the TR remove control device to com-
mand light oil valve V2.
Alternatively, if single stage operation is
required, instead of control device TR install a
jumper lead between terminal 11 and 12 of the
terminal strip.
The RL 190 burner has been type- approved for
16
intermittent operation. This means they should
12
compulsorily be stopped at least once every 24
hours to enable the control box to perform
2,5
checks of its own efficiency at start-up. Burner
halts are normally provided for automatically by
the boiler load control system.
If this is not the case, a time switch should be fit-
ted in series to IN to provide for burner shut-
down at least once every 24 hours.
WARNING: Do not invert the neutral with
the phase wire in the electricity supply line.