NTI TFTN - Page 82

Installation and Operation Manual TFTN 085-199
82
16.3.2.2 DHW Setup
Navigate the DHW menus as illustrated in Figure 16-9. Tables 16-6 through 16-8 provide a description of each menu option.
Figure 16-9 DHW Setup
Go to User Menu
Takes you directly to the user DHW settings menu
(i.e., User Menu with Zone Selection = DHW).
Note: Tank Setpoint (Reduced), DHW Recirc
Setpoint and Scheduling parameters are accessed
from the User Menu.
Table 16-6 DHW Setup
Setting
Parameter
Range/Description
Factory
Setting
DHW Mode
24.5.2
24.5.3
Setting defines for the boiler control which is the configuration of the
DHW Indirect Water Heater (IWH):
Tank Sensor-Upstream IWH – boiler is expecting a temperature sensor
reading from an IWH that is located upstream (boiler side) of the
hydraulic separator.
Aquastat-Upstream IWH – boiler is expecting an on/off switch input
from an IWH that is located upstream (boiler side) of the hydraulic
separator.
Tank Sensor-Downstream IWH – boiler is expecting a temperature
sensor reading from an IWH that is located downstream (system side)
of the hydraulic separator.
Aquastat-Downstream IWH – boiler is expecting an on/off switch input
from an IWH that is located downstream (system side) of the hydraulic
separator.
Off – DHW is disabled
Note: the boiler will automatically switch to Tanks Sensor if a sensor is
connected to DHW SWITCH/NTC.
Aquastat-
Downstream
IWH
Tank Setpoint
(Comfort)
24.5.0
Establishes the target temperature of the DHW tank (IWH) during
Comfort time period. Setting is only applicable when DHW Mode is set
to Tank Sensor. (Range = 50-190°F)
125°F