30
925.220.4 - EN
*/4536$5*0/41&35"*/*/(505)&*/45"--&3
Models 1.240 i - 1.240 Fi - 1.310 Fi
NB:
The DHW priority NTC sensor and the 3-way valve motor are not included, but are supplied as accessories.
HOT WATER TANK SENSOR CONNECTION
The boiler is arranged for connection of an external D.H.W. storage tank.
Connect the D.H.W. storage tank pipes as shown in figure 17.
Connect the D.H.W. priority
NTC
sensor to terminals 5-6 on the terminal block
M2
. Insert the NTC sensor probe in the
special hole on the D.H.W. storage tank.
The domestic hot water temperature (35°...65 °C) is adjusted by operating the buttons
+
/
-
.
26. CONNECTING AN EXTERNAL HOT WATER TANK AND 3-WAY VALVE MOTOR
TM =
flow temperature (°C)
Te =
external temperature (°C)
K REG constant curves
Graph 3
T.e (°C)
T.m (°C)
T.e (°C)
T.m (°C)
Tm MAX = 45°C
Tm MAX = 85°C
0710_1801
0710_1802