57
925.224.3 - EN
INSTRUCTIONS PERTAINING TO THE INSTALLER
Models 1.310 Fi - 1.240 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 18.
Connect the DHW priority
NTC
sensor to terminals 5-6 on the terminal block
M2
after removing the heating element present.
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
NOTES
Make sure parameter F03 = 05 (section 20).
Figure 18
Legend
UB
hot water tank unit
UR
heating unit
M
3-way valve motor
(accessory)
M2
connection terminal block
SB
DHW priority hot water tank sensor
MR
heating delivery
MB
hot water tank delivery
RR
heating/hot water tank return
MOTOR
(ACCESSORY)
0702_1602
