26
IN
S
T
A
L
L
E
R
S
e
c
ti
o
n
TERMINAL BLOCK M1
(L)
=
Live
(brown)
(N)
=
Neutral
(light blue).
=
Ground
(yellow-green).
(1) (2)
= contact for
120V
Room Thermostat
.
Put back the jumper on terminals 1-2 of boiler terminal
block M1 if the room thermostat is not used or if the
Remote Control is not installed.
TERMINAL BLOCK M2
Terminals 1 - 2:
bus connection of programmable room unit
(supplied as an accessory)
Terminals 4 - 5:
outdoor temperature sensor connection (supplied as an accessory)
Terminal 3 :
not used.
Terminals 6 - 7 - 8:
see section 11.1 and 11.2
Terminals 9 - 10:
Indirect storage tank sensor connection for
Utica Boiler MAH-125
model.
If the appliance is connected to an infloor system, install a limit thermostat to prevent the latter from overheating.
IMPORTANT INFORMATION
Use the relative cable grommets at the bottom of the boiler to thread the cables through to the terminal blocks.
11.1 CONNECTING THE 120 V ROOM THERMOSTAT
HIGH VOLTAGE -
The connections in terminal block M1 are high voltage (120 V). Before making connections, make
sure the appliance is disconnected from the power supply. Respect polarity L (LIVE) - N (NEUTRAL).
To connect the 120V Room Thermostat to the boiler, proceed as described below:
•
switch off the boiler;
•
access the terminal block
M1
;
•
remove the yellow jumper on terminals
1
&
2
of the
M1
bus.
•
remove the jumper from the ends of contacts
1-2
and connect the wires of the
120 V
Room Thermostat;
•
switch on the boiler and make sure the Room Thermostat works correctly.
11.2 CONNECTING THE 24 V ROOM THERMOSTAT
To connect a 24 V Room Thermostat proceed as follows:
•
switch off the boiler;
•
access the terminal block
M2
;
•
connect the wires of the 24 V Room Thermostat to the terminals
6(R)-7(W)-8(C)
;
•
switch on the boiler and make sure the 24 V Room Thermostat works correctly.
NOTE: the maximum load admitted is 10 mA
To connect a 24 V Heat anticipator Room Thermostat proceed as follows:
•
switch off the boiler;
•
access the terminal block
M2
;
•
connect the wires of the 24 V Heat anticipator Room Thermostat to the terminals
6-7
;
•
connect a bridge between the terminals
6-8
;
•
switch on the boiler and make sure the 24 V Heat anticipator Room Thermostat works correctly.
M2
M1
Bk
R
10
2
3
4
5
6
7
8
9
1
M2
lB
24V
R
W
C
Bk
R
10
2
3
4
5
6
7
8
9
1
M2
lB
24V
WARNING
DANGER
2400
11317
,
REV
D
(
0
7
/
30
/1
6
)
Содержание UTICA BOILERS MAC-150
Страница 10: ...MAC 150 Low Water Pressure Cutoff 10 240011317 REV D 07 30 16...
Страница 11: ...MAH 125 Low Water Pressure Cutoff 11 240011317 REV D 07 30 16...
Страница 54: ...Coupure de la pression d eau faible 54 240011317 REV D 07 30 16...
Страница 84: ...84 S e c t i o n I N S T A L L A T E U R f r 240011317 REV D 07 30 16...
Страница 87: ...87 S e c t i o n I N S T A L L A T E U R f r 240011317 REV D 07 30 16...
