Riello TAU Unit 50 Installation And Maintenance Manual page 89

DEPENDING CONNECTIONS 2-8
MO1
28
INAIL
27 INAIL
26
...
23 +5V
GND
22
SIGNAL
21
20
...
2
BUS 2
1
M01 Low-voltage terminal board
pm Minimum pressure switch
pb Lockout pressure switch
FL Flow-meter
BUS 2 Bus Depending
MO2
...
L
18
17 N
16
15 L (N.C.)
14 N
L (N.O.)
13
12
M02 High-voltage terminal board
VLPG LPG fuel shut-off valve
V1 Thermal unit two-way valve
L Live
N Neutral
Earth/ground
(*) A DHW pump PB can be controlled instead of the LPG
fuel shut-off gas solenoid valve
pb
P.123 = 2
pm
FL
P.117 = 3
BUS 2
depending 3
terminals 1 e 2
VLPG
P. 125 (*)
V1
M
P. 128 = 1
89
CONFIGURATION OF CASCADED THERMAL UNITS
Hardware configuration
S1 = OFF (not used)
DIPSWITCH = 00100000
Key
Setting the Dip-switch
ON DIP
1 2 3 4 5 6 7 8
ON DIP
1 2 3 4 5 6 7 8
$
ON DIP
1 2 3 4 5 6 7 8
9
For further information see section "System management".
OFF
S1
ON
Dip switch ON
Dip switch OFF
Thermal Module
Configuration
3rd module (Depending)
4th module (Depending)
$
8th module (Depending)