20
PART 8
TH CONTROL PANEL
8.1
INTRODUCTION TO THE TH CONTROL
PANEL
The menu structure for the TH Control Panel was designed
to be intuitive and easy to use for a first time user. To
maintain the TH boiler at its correct settings three levels of
security is provided. User, Setup and Diagnostic with an
increasing amount of parameters that can be adjusted with
each higher level of access. This is done to provide an easy
means of communication for the end user and a more in-
depth approach for factory and installers when installing
and troubleshooting.
Figure 20: TH Control Panel Layout
Table 14: TH Control Panel Key Functions
KEY
KEY DESCRIPTION
HOME/DONE/RESET
-
Reset Lockout errors
-
Return to previous menu mode
CONFIRM/NEXT
-
Scroll forward through the
parameter structure
-
Store parameter value
UP
-
Pressing the button changes
the setpoints in one degree
increments
- Pressing and holding the
button changes the setpoints in
five degree increments
DOWN
-
Pressing the button changes
the setpoints in one degree
decrements
- Pressing and holding the
button changes the setpoints in
five degree decrements
Startup Display
Upon startup of the TH all text on the LCD will be shown for
2 seconds, followed by the software version number for an
additional 2 seconds. The Version # relates to the version
of software uploaded onto the boiler control.
The display panel then defaults to the outlet temperature
display and communicates with the TH Controller. At this
time dashes will be displayed in the numerical part of the
LCD, along with ‘Outlet’ and ‘
o
F’.
Figure 21: TH Home Screen
After a certain period of user inactivity the display times out
and switches to the home screen. Setpoint changes made
prior to the timeout will be saved. Pressing the Done button
after changing a setpoint also saves the new setpoint.
Table 15: Timeouts in User Mode
Screen Displayed
Length of Inactivity
that Causes
Timeout
DHW Water Setpoint Temp
10 seconds
Outlet Water Temp
1 minute
Inlet Water Temp
Delta T
DHW Water Temp
Stack Temp
Outdoor Temp
Firing Rate
Table 16: Timeouts in Setup Mode
Screen Displayed
Length of Inactivity
that Causes
Timeout
Temperature Scale
1 minute
Outdoor Reset
Remote Firing Control
5 minutes
Anti-short Cycle
Table 17: Timeouts in Diagnostic Mode
Screen Displayed
Length of Inactivity
that Causes
Timeout
Flame Current
5 minutes
Alert Code
Lockout Code
Maximum Outlet Temperature
Maximum Stack Temperature
Maximum DHW Temperature
Minimum Firing Rate
Maximum Firing Rate
Manual Firing Rate
