Unigas HRX92R-FGR EA Manual Of Installation - Use - Maintenance page 5

Gas - light oil burners
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Burner light-oil: additional damper for exclusion FGR
WARNING! For burner Natural gas / Light oil: during diesel operation it is recommended to use an
additional damper to close the flow of recirculation gas FGR.
FGR (ricirculate flue gas) damper
Option 1: Damper with actuator
Connect the actuator to the electrical predisposition inside the electrical panel
Option 2: Damper manual
Damper manual with Opening / Closing signaling microswitches to be connected to the
electrical predisposition inside the burner electrical panel.
Additional damper
with actuator on chimney (option 1)
5

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