Installation / Operation Instruction Manual

Page 85
CONFIGURATION
8.D.7 Temp Limits
To navigate to the Temp Limits Screen, touch the Temp Limits Icon on the Conguration Screen.
The Temp Limits Conguration Screen allows adjustment of the following parameters:
• Auto Reset CH– The temperature at which the unit will shut down when outlet temperature exceeds its maximum
auto reset set point. The control will automatically reset, based on the reset di󰀨erential.
• Manual Reset CH – The temperature at which the unit will shut down when outlet temperature exceeds its
maximum manual reset set point. The control will require manual reset in this condition.
• Reset Di󰀨erential – The value below the
Auto Reset temperature at which the unit
will automatically reset itself and resume
functionality.
• Delta T Parameters– Allows enabling/
disabling of the Delta T derate functionality
and adjustment of the Delta T value at
which the boiler should begin to derate.
• Flue Limitation – Sets the ue temp
limitations.
• Outlet Limitation Parameters – Allows
for the adjustment of Min and Max Outlet
Temps.
FIRING RATE (%)
Max Fire
Min Fire

T
Annunciate a high T condion and begin to derate
Max 
= 100F; (hard coded)
Min 
(Min seng = 40F; Max seng = 70F;
Default Seng = 60F)
Once max T has been reached,
shutdown (not lockout) on a high T
coon - this will
auto-reset a the
an-short cycle me has expired.
8.D.7.a Delta T Parameters
To navigate to the Delta T Parameters Screen, touch the Temp Limits Icon on the Conguration Screen, then touch the Delta
T Parameters button on the Temperature Limits Parameters Screen. The boiler will derate as shown in the image below.
The Delta T Parameters Screen allows adjustment of the following parameters:
• Enable/Disable – Enables/disables the Delta T temperature functionality.
• Delta T Temp Min – The temperature di󰀨erence between the unit’s inlet and outlet
at which the boiler will begin to derate to prevent a Delta T auto-reset condition.