Riello 20082277, Instructions For The Installer And For Technical Assistance, Page: 29 / 36

29
INSTALLATION
ENGLISH
2.6 Connecting the low temperature thermostats
The BAG
3
are equipped with a low temperature limit thermostats
(TB) that protect the zones of low-temperature above 55 °C.
9
Do not connect the low temperature limit thermostats (TB) in
case of high temperature system.
For installations on low temperature system ( fl oor) to choose
one of the following links:
- boiler - connect the low temperature thermostat TB, brown
wires (MA) and blue (BL), the input of TBT boiler (see installation
manual for connection and operation of the boiler in case of
intervention of at least one of the thermostats TB).
- BAG - connect the low temperature thermostat TB inside the
electrical panel of the module, removing jumper purple (VI) and
connecting the wires brown (MA) and blue (BL) in place of the
jumper previously removed.
In case of intervention of at least one of the thermostats TB will
stop the power to all the circulators and the request to the boiler
until normal operating conditions are restored.
VI
RS
NE
BI
MA
MA
MA
TB
MA
BL
2.7 Electrical connections
The BAG
3
is prearranged with rubber cable feed-throughs (1) lo-
cated in the top section of the box allowing wiring to be passed
through.
1
Below is an explanation of how to correctly connect the BAG 3 LE
to the various devices and the boiler.
9
Before carrying out any electrical intervention, set the main
system switch to “off”.
Connecting the BAG 3 to the electrical power supply
− Pass the cable (2) which comes out of the electrical con-
nection box (3) through the cable feed-through (1) and
connect it to the electrical power supply (phase-neu-
tral-earth) making sure not to connect it below the boiler
fuse.
2
3
Access to the BAG 3 connection terminals.
− To access the BAG 3 connection terminals, loosen the four
screws (4) and remove the cover (3).
3
4
Connecting the BAG 3 to the ambient thermostats/chrono-ther-
mostats
− Carry out the connections of the ambient thermostats (TA)
and/or chrono-thermostats (CT) of each zone, as indicat-
ed in the diagrams below. Before connection, eliminate
the relative jumper (TA1,TA2 o TA3).
BAG 3 3 AP
BAG 3 2 AP
MA BL
TBT3 TBT2
TBT1
MA
MA
2 3
4
5 6 7
TA2 NE TA1 RS TA3 BI
8 9
1
R
RS
MA
BL
MA MA BL BL BL GI/VE GI/VE GI/VE
bl M
VI
MA
N
GI
/
G
GI/VE
GI/VE
BL
B
MA MA
BL BL
B
BL
B
BL
B B
R
S
N
NE
B
M
A
M
A
M
TA2 dopo aver
rimosso ponticello
nero in morsettiera
TA3 dopo aver
rimosso ponticello
bianco in morsettiera
TA1 dopo aver
rimosso ponticello
rosso in morsettiera
TBT1 - TBT2 - TBT3
dopo aver rimosso
ponticello viola in
morsettiera
GI/VE
P2
BL
MA
GI/VE
P1
BL
MA
MA
BL
P3 GI/VE
B
BL
B
Cavo ingresso
di rete 230V
BI
MA
MA
BL
TBT1
TBT2
2
3
5 6
TA 1 RS
7
1
Cavo ingresso
di rete 230V
GI/VE
GI/VE
MA MA
BL BL
GI/VE
MA
BL BL
MA
BL
4
TA 2 NE
VI
BL
GI/VE
TA1 dopo aver
rimosso
ponticello ROSSO
in morsettiera
TA2 dopo aver
rimosso ponticello
NERO
in morsettiera
GI/VE
P2
BL
MA
GI/VE
P1
BL
MA
TBT1 - TBT2
dopo aver
rimosso
ponticello
VIOLA
in morsettiera