Riello TAU Unit 50 Installation And Maintenance Manual page 80

CONFIGURATION OF CASCADED THERMAL UNITS
MO2
...
18 L
17 N
16
15
14 N
13
L - DHW (N.O.)/PB/PI
12
11 L
10
N
9
8
7
6 PWM
5
4 GND
...
M02 High-voltage terminal board
VLPG LPG fuel shut-off valve
P2 Zone 2 pump (high temperature)
PC Thermal unit circulation pump
L Live
N Neutral
Earth/ground
(*) A system pump PI can be controlled instead of the
LPG fuel shut-off gas solenoid valve
VLPG
P.125 (*)
P2 P.128 = 16
P.187 = 1
PC
80
Hardware configuration
S1 = OFF (not used)
DIPSWITCH = 01000000
Key
Setting the Dip-switch
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
2nd module (Depending)