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C O N F I G U R AT I O N
8.D.7 Manual Firing Rate
To navigate to the Manual Firing Rate Screen, touch the Manual Firing Rate Icon on the Configuration Screen.
The Manual Firing Rate Control Screen allows the adjustment of the following parameters:
• Enable/Disable
– Enables and disables the manual firing rate functionality.
• Firing Rate
– With the manual firing rate functionality enabled, an operator can manually set the firing rate. This
functionality is used for combustion adjustment purposes. With the manual firing rate functionality enabled, and the
desired fan speed set, apply a heat demand using the ‘Manual Heat Demand’ button on this screen and the boiler/
heater will step through the ignition process and run at the set fan speed.
• Time Out
– Is the setable amount of time
that the operator has to adjust the Manual
Firing Rate before the control will go back
to automatic. It’s a walkaway timer and
safety feature.
• Post Purge Time
- Adjust the amount of
time the blower continues to run after a
heat demand has been satisfied.
• Manual Heat Demand
- The ‘Manual
Heat Demand’ button allows an installer to
initiate a digital heat demand, eliminating
the need for a physical heat demand. This
digital heat demand is treated as a local
heat demand only. This means that, in a
cascade system, if the digital heat demand
is applied at the lead boiler, the lead boiler
will treat the digital heat demand as a local
only heat demand.
8.D.8 Temp Limits
To navigate to the
Temp Limits
Screen, touch the Temp Limits Icon on the Configuration Screen.
The Temp Limits Configuration 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 differential.
• 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 Differential –
The value below the
Auto Reset temperature at which the unit
will automatically reset itself and resume
functionality.
• Delta T Parameters–
The MIN and MAX
Temperature between which your system
will fire.
• Flue Limitation –
Sets the flue temp
limitations.
• Outlet Limitation Parameters –
Allows
for the adjustment of Min and Max Outlet
Temps.
LAARS Heating Systems
