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3.3
ELECTRICAL CONNECTIONS TO THE TERMINAL STRIP
IN
Manual switch
MB Burner terminal strip
H
Lock-out signal
NOTE
Wire section: min. 1 sq.mm.
(Unless required otherwise by local standards and legis-
lation).
For 230V supply make the triangle connection on the
pre-heater and on the motor (the original connection is
"star-type" for 400V).
TWO STAGE OPERATION
It is achieved by the remote control device connected to ter-
minals 5-6 (removing the jumper), that controls the 2
FASTENING OF THE ELECTRICAL WIRES
All the wires, which have to be connected to the burner terminal strip (16, fig. 1) shall pass through the cable
glams (17, fig. 1), see the figure below.
D2635
Any other signals or controls can be connected to the burner terminal strip by removing the presheared disc pre-
sheared hole and inserting a common cable glam for the passage and the clamping of the leads. To ensure the
IP 40 degree of protection in compliance with EN 60529 close the passage holes of the cables and any unused
cable entries with appropriate discs.
NOTES
- Make a safe earth connection.
- Verify the burner stop by opening the boiler thermostat and the burner lock-out by darkening the photocell.
6203
TL
Limit remote control
TR
Regulation remote control
TS
Safety control device system
nd
valve.
1 - Single phase pre-heated resistor
power supply: . . . . . . . . . . . . . . . . . . . . . .cable entry Pg 21
2 - Motor three phase supply: . . . . . . . . . . . . .cable entry Pg 16
3 - Single phase power supply and
safety thermostat: . . . . . . . . . . . . . . . . . . .cable entry Pg 13.5
4 - Control thermostat: . . . . . . . . . . . . . . . . . .cable entry Pg 13.5
nd
5 - 2
stage thermostat:. . . . . . . . . . . . . . . . .cable entry Pg 13.5
6
GB
(to be carried out by the installer)
A Ampere
B Ampere
C Ampere
D sq.mm
E sq.mm
F sq.mm
D3742
CONNECTIONS
RESISTORS
PRE-HEATER
D2711
230V
400V
16
10
6
4
25
16
1.5
1.5
2.5
1.5
6
4
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