Installing The Burner - Heat Wise SU-3 Manual

VENT PIPE AND DRAFT HOOD SIZES
Refer to Chart 3 to properly size the flue pipe. If the flue pipe exceeds 10' in length
(including elbows), use the next larger diameter flue pipe and draft hood. If a draft regulator is
required, any Canadian Standards Association (CSA) or Underwriter's Laboratory (UL) listed
double swing draft regulator must be used. A movable internal damper is not permitted on gas
installations. When the burner is used as a conversion burner, draft over fire should be maintained
as –0.02" W.C. by adjusting the regulator when the burner is fired. The installer should follow the
barometric draft regulator manufacturer's instructions for complete details for installations and
adjustments. The vent pipe should extend only to (but not beyond) the inside wall of the chimney.
The sizing below does not apply on any factory listed packaged units .
Input per Hour
Up to 250,000 BTU
250,000 to 320,000 BTU
320,000 to 400,000 BTU
If the burner being installed is a conversion burner, use a prefabricated chamber or build a firing
chamber that can withstand 2000
mounting plate to determine the flame tube insertion required. Deduct ¼" from the total length
and tighten the flange on the flame tube with the deducted insertion depth. The ¼" deduction will
prevent the tip of the flame tube from burning off. Install the burner on the unit and then tighten
the nuts on the flange so that the burner is permanently secured. Seal off any free openings with
high temperature cement.
Chart 3: Vent Pipe Sizing
Draft Hood and Flue Pipe Sizes
7" diameter
8" diameter
9" diameter

INSTALLING THE BURNER

o
F (See Chart 2 on page 3). Measure the boiler or furnace
Picture 1: STANDARD FLANGE:
Measure your insertion depth and mark the blast tube.
Deduct ¼" from the total length; the ¼" deduction will
prevent the tip of the flame tube from burning off. Remove
the blast tube by loosening the two 3 mm allen screws
located on the housing near the base of the blast tube.
Install the flange and gasket from the rear of the blast tube
and tighten the four ¼"-20 setscrews on the flange.
Reinstall the blast tube (with flange to the housing). Make
sure that the blast tube is firmly fixed to the burner. Mount
the burner to the heat exchanger and tighten the bolts. Seal
off any free openings with either high temperature cement
or high temperature silicone
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