Heatilator WTB33 Installation Instructions Download Page 3

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Heatilator • WTB Refractory • 4055-186 Rev. D  •  8/15

8.  Adjust the back and sides so no gaps are visible in the 

corners where the pieces come together.

9.  Repeat Step 7 to install the other side.  See Figure 12.

Figure 11.  Attach Refractory Bracket

10. Reinstall the 

fi

 xed glass assembly and screen.

11.  Restore power and gas 

fl

 ow. 

Figure 12.  Install Other Side Refractory

Convert Refractory Kit to Fit B-Vent Appliance (Optional)

The back refractory piece will need to be cut for grout line con-

sistency between the back and the sides.

Note: 

 Use a straight edge to cut back refractory as shown in 

Figure 13.  

Figure 13. 

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