UTICA BOILERS CCB-150 Instruction Manual page 48

1-model combi boiler for ch and dhw production 2-models heating only

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FH Mode – All Models

• Whenever the boiler is powered on or after an F37 Fault (Water Pressure error) the boiler

will enter the FH Mode (Boiler pump runs to purge air as indicated below).

• FH Mode lasts for 120 seconds during which time the fan is off; the pump is on and off

every 5 seconds; and the 3-way valve changes position every 30 seconds.

• During the first 5 seconds of FH mode software release version is shown.

5 seconds

120 seconds

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Chb-100 Chb-130