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OPERATING & INSTALLATION INSTRUCTIONS FOR STRATFORD CF ZERO CLEARANCE WOOD HEATER
4. Starting with the rear tube,
lean and insert the right end of
the secondary air tube into the
rear right channel hole. Then,
lift and push the tube towards
the right inside the hole in the
right channel.
5. Align the notch in the left end
of the tube with the tab of the
left air channel hole.