Heatmor 100 CSS - B Firebox Door

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Firebox Door
Principles of the Firebox Door
The rebox door is water cooled to prevent warping of the door. It also
acts like a water jacket, absorbing heat from the re, and placing that
energy into the water. Being water cooled, the front of the rebox door
will never be hotter than the water. The cold outside atmospheric air
is drawn over the warm surface of the rebox door, by the combustion
blowers, which is then warmed and forced into the rebox as warmed
combustion air. This lessens the time needed for the interior of the
rebox to reach that high smoke burning temperature. It is important
that the rebox door seal maintains an airtight seal.
Operation of the Firebox Door
Water from the main waterjacket ows in a loop between the
rebox door and the waterjacket by natural thermal siphoning.
Since there is no pump involved, there is very little pressure.
During this process, the water cools the door and the water in
the door is heated.
Refer to Safe Operating Guidelines for further instructions on how to safely open
and close the rebox door or contact your local dealer.
Maintenance / Result
A properly adjusted rebox door will not allow smoke to enter or escape the rebox. Maintain a tight
seal all around the perimeter of the rebox door at all times. There may be times when the perimeter of the
rebox door will build up with “creosote strings,” especially along the bottom.
To keep the perimeter clean, occasionally scrape down to the steel. Do not cut, scrape or disturb the actual
soft, pliable seal. Keep the door correctly adjusted on the hinges so that the pliable seal is being forced against
the rebox ledge. Keep all nuts and bolts on the handle, latch and hinges properly adjusted.
The seal itself consists of a rope in the groove of the rebox door, covered with high temperature silicone.
Failure to manage and maintain the rebox door could result in premature replacement of parts and a buildup
of creosote.
(When replacing the Firebox Door, it is recommended to replace the Door Hoses at this time.)
Removal and Replacement
To remove the rebox door, follow these steps:
1) Turn off power to the combustion air blowers.
2) Ensure that the re in the rebox is extinguished.
3) Stop the ow of water from the water jacket through the door hoses by pinching the two door hoses
ABSOLUTELY NO FIRE IN THE FIREBOX WHEN PERFORMING THIS REPAIR. DO NOT
PERFORM THIS REPAIR WHEN UNIT WATER TEMPERATURE IS UNSAFE. ALWAYS WEAR PROPER
PERSONAL PROTECTIVE EQUIPMENT WHEN WORKING WITH WATER AND CHEMICALS.
Firebox Door Handle
Firebox Door Handle