Riello TAU Unit 50 Installation And Maintenance Manual page 105

DEPENDING CONNECTIONS 2-8
MO1
28
INAIL
27 INAIL
26
...
23 +5V
GND
22
SIGNAL
21
20
...
16
15
14
13
...
2
BUS 2
1
M01 Low-voltage terminal board
pm Minimum pressure switch
pb Lockout pressure switch
FL Flow-meter
TA/OT Room thermostat / Open Therm Interface
S2 Zone 2 sensor
BUS 2 Bus Depending
pb
P.123 = 2
pm
FL
P.117 = 3
TA/OT
S2
P.188 = 2
BUS 2
depending 3
terminals 1 e 2
105
CONFIGURATION OF CASCADED THERMAL UNITS
MO2
...
18 L
17
N
16
L (N.C.)
15
N
14
L (N.O.)
13
12
11 L
10 N
9
8
7
6 PWM
5
4 GND
...
M02 High-voltage terminal board
VLPG LPG fuel shut-off valve
V1 Thermal unit two-way valve
P2 Zone 2 pump (high temperature)
L Live
N Neutral
Earth/ground
VLPG
P. 125 = 8
V1
M
P. 128 = 1
P2
P. 187 = 16