47
Installing the System Piping
3.6.11 Wiring Diagram - Optional Supply/Return Temperature Sensors
SUPPLY
RETURN
OUTDOOR
DHW TANK
R
W
R
W
C
R
W
C
Temperature sensor
Thermal insulation
<NFB-H>
Cable tie
Note
To control the boiler supply or return water temperature using the external temperature sensors,
configure the system accordingly.
On the front panel, press the Menu button (
) to enter the setting menu, and then select 2. Space
Htg Operation > 6. SH Control Method to select one of the control modes.
Summary of Contents for NFB-175H
Page 134: ......