O
Connect a safety thermostat if the heating circuit is for
underfloor heating.
4
Remove the bridge.
4
Connect the wires from the safety thermostat to the
connector.
P
Connecting an additional C circuit to the AD249 option.
a
CAUTION
Do not connect anything to the
Mr
outlet on the
terminal block. The reversal valve is connected
to the PCU PCB in the boiler.
z
Do not connect anything to the terminal block.
4.9.8.
Hot water storage tank connection
n
QUADRO DU 750 storage tank
In this installation example, the storage tank (type QUADRO DU
750) incorporates a domestic hot water zone. The boiler starts up
systematically to maintain the domestic hot water zone in the storage
tank or to maintain the independent tank at temperature.
If the storage tank does not have a DHW zone, use an
independent domestic hot water tank.
X20
X4
7
8
6
M
4
5
10
9
1
3
2
On
/o
ff
OT
BL
RL
S E
XT
S E
CS
TS +
B
A
B
0-10V
S AMB C
4 3 2 1
2 1
+ -
S AMB B
2 1
S AMB
A
2 1
S SYST
+ TA
-
S ECS
S EXT
S DEP C
2 1
2 1
2 1
2 1
2 1
S DEP B
2 1
PCU
SCU
C003088-D
A
Do not connect anything to the terminal block.
AGC 10/15 - AGC 15 - AGC 25 - AGC 35
4. Installation
20/01/2012 - 300026081-001-B
47