Direction of air flow
Fuel pump
Glow pin
Ventilation hole
Flame sensor
Combustion chamber
Serial number
1
SYSTEM OVERVIEW
4
REVISION LEVEL A - 09/09/15
Figure 6
SYSTEM OVERVIEW
4. Difference by controller operation
a. When operating in standby mode with a Mini-Controller the fan will
continue to run in order to maintain airow across the return air
temperature sensor.
b. When operating in standby mode with a Digi/Digi-Max Controller the
fan will shut down as air ow is not required.
Figure 4
Any component replacement will require the serial number of the espar unit
be entered in order to charge the component to the work order. The seial
number is located on the side of the Espar unit (Figure 5).
Figure 5
PLEASE NOTE!
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