24
Display
Display Readout
Description
Maximum Stack Temperature
When stack temperature approaches
this value the boiler will automatically
reduce firing rate. If temperature
continues to climb this will result in
the boiler shutting down while
displaying an alert code.
PVC: 149
o
F (65
o
C)
CPVC: 194
o
F (90
o
C)
PPE: 230
o
F (110
o
C)
AL29-4C: 300
o
F (149
o
C)
316L Stainless Steel: 300
o
F (149
o
C)
Minimum Firing Rate
Min icon is flashing and the Diag icon
is solid. The heater will fire at the
displayed modulation rate.
The firing rate value displayed is
alternated with the outlet
temperature display.
After 5 minutes of inactivity or when
the ‘Done’ button is pressed the TH
returns to normal operation.
Maximum Firing Rate
Max icon is flashing and the Diag
icon is solid. The heater will fire at
the displayed modulation rate.
The firing rate value displayed is
alternated with the outlet
temperature display.
After 5 minutes of inactivity or when
the ‘Done’ button is pressed the TH
returns to normal operation.
Manual Firing Rate
Max icon is flashing and the Diag
icon is solid. TH is initially forced to
90% of firing rate (if not already
operating).
To manually adjust firing rate. Press
the [UP]/[DOWN] button once
changes the firing rate by 1%.
Low Fire: 10%
High Fire: 90%
After 5 minutes of inactivity or when
the ‘Done’ button is pressed the TH
returns to normal operation.
