THE TUBE SCRAPER ROD:
Put the stainless steel rod through the hole in the heat exchanger located behind the top louvers. Thread
the rod into the scraper plate, which is visible from inside the firebox by removing the top baffle.
Figure 36: Slider / damper positions.
Taking a reading of vacuum pressure inside the firebox with a magnehelic gauge can be used to set
the slider for best combustion. The best settings are a reading of 0.12 to 0.13 inches of water
column (30 Pa) on the high fire setting. Some fuels may require higher or lower settings.
The reading can be taken from the ” (3 mm) hole located on the front of the unit below the door and
behind the magnetic ash lip.
Circuit Board Only: The slider should be set on high output as per pervious page.
The combustion blower determines the adjustment of air from high fire to low fire. The combustion
exhaust blower is a variable speed blower controlled by the heat output. When the heat output is turned
down the blower speed will slow, decreasing the airflow through the firebox. As the heat output knob is
turned up, the blower speed increases drawing more air through the firebox
Installation
22
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