Version 1.04
March 2011
APEX cbt
Page 34
www.blazeking.com
GASKET INSPECTION
Inspect the door and bypass door gasket for physical deterioration, missing sections or obvious leakage. The furnace
front should make a groove in the gasket material - one side of the groove (toward the inside) will often be dark or black,
and the other side (toward the outside) should be light or white. Dark smudges on the outside of the groove may indicate
a smoke leak. If the groove is very shallow or missing, or if there is a heavy ash or creosote deposit along the bottom
edge of the gasket, it may need to be replaced. Frayed or broken gasket material, or a gasket that is hard and
unyielding, will also indicate need for replacement. Any time a piece of gasket is missing or is broken anywhere, the
entire gasket must be replaced.
To check the gasket further, insert a piece of paper (a dollar bill will work) into the door opening and close and latch the
door. Obvious resistance should be felt when pulling the paper out. Repeat this check several times around the
perimeter of the door.
Loading door gasket tightening instructions can be found below under point 8 and fig. 28
Bypass door adjusting can be found on page 35.
LOADING DOOR GASKET REPLACEMENT
1.
If the door gasket is to be replaced, be sure you have some 7/8” fiber glass gasket material, ready to re-install. See
your Blaze King dealer.
2.
Be sure the fire is out and the furnace has cooled down. The door does not have to be removed from the furnace.
3.
With a pair of pliers, pull the old door gasket out of the channel and dispose of it.
4.
Thoroughly clean out the channel so the new silicone adhesive will adhere and the gasket will fit smoothly
5.
Run a small bead of a high temperature silicone adhesive (such as G.E. Silicone Sealer, or the equivalent) along the
center of the channel. DO NOT USE HOUSEHOLD SILICONE CAULKING. High temperature silicone may be
obtained from most auto parts stores.
6.
Start the new gasket in the lower right corner. Do not stretch or cut the gasket. Distribute the gasket evenly around
the frame.
7.
Close the Loading Door and allow the adhesive to dry.
8.
Door adjustment: the door seal is adjusted by moving the latch catch on the furnace in or out. To do this, undo the
two bolts (see fig.28). The gasket should be just tight enough to test ok as in step 9, do not over tighten the latch
which makes the door difficult to latch.
9.
Check the fit of the door gasket. Insert a narrow strip of paper into the door opening and close and latch the door.
Obvious resistance should be felt when pulling the paper out. Repeat this check several times around the perimeter
of the door.
MAINTENANCE
WARNING:
DO NOT OPERATE THIS WOOD FURNACE IF THE
DOOR GASKET IS MISSING OR DAMAGED.
DANGEROUS OVERFIRING CAN OCCUR WHICH
CAN
DAMAGE
THE
APPLIANCE
OR
IGNITE
CREOSOTE IN THE CHIMNEY, POSSIBLY
CAUSING A HOUSE FIRE. IF ANY PART OF THE
WOODFURNACE OR FLUE SYSTEM IS GLOWING
THE FURNACE IS BEING OVERFIRED.
Fig. 28
