PENSOTTI PCH 34B H Cleaning Procedure page 4

Service Requirements
The quantity and rate of build-up on the heat exchanger will vary with each boiler installation due to the factors mentioned on page 3.
Boilers operating on LP Gas and those installed in environments containing high levels of pollutants or chemical vapors in the
combustion air may need to be cleaned more frequently. The frequency of a cleaning schedule will need to be determined by the
servicing company based on the condition of the heat exchanger at the time of cleaning.
Dirty Heat Exchanger
Blocked Heat Exchanger Passages
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