TFTN 085-199 Installation and Operation Manual
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16.3.2.8 Sensor Configuration
The Sensor Configuration menu must be accessed to configure the
AUX1 NTC
and
AUX2 NTC
inputs for use with a System,
Buffer Tank, or DHW Recirc sensor; see Figure 16-15 and Table 16-13.
Figure 16-15 Sensor Configuration Menu
Table 16-13 Sensor Configuration
Setting
Parameter
Range/Description
Factory Setting
Auxiliary
Sensor 1
24.6.1
Sets the functionality of input
AUX1 NTC
.
None
–
select if there is no sensor being connected to
AUX1 NTC
System Sensor
–
select if connecting a system temperature sensor to
AUX1 NTC
for direct boiler control of the system supply temperature.
Buffer Tank
–
select if connecting a buffer tank temperature sensor to
AUX1 NTC
for direct boiler control of the temperature of an external
buffer tank.
Sensor must be 10k beta = 3977 NTC; an optional strap-on System
Sensor is available from NTI (P/N 84010).
None
Auxiliary
Sensor 2
24.6.2
Sets the functionality of input
AUX2 NTC
.
None
–
select if there is no sensor being connected to
AUX2 NTC
DHW Recirc
–
select if connecting a DHW recirculation temperature
sensor to
AUX2 NTC
for direct boiler control of a recirculation loop
connected to the DHW IWH.
Buffer Tank
–
select if connecting a buffer tank temperature sensor to
AUX2 NTC
for direct boiler control of the temperature of an external
buffer tank.
Sensor must be 10k beta = 3977 NTC; an optional strap-on System
Sensor is available from NTI (P/N 84010).
None
