Burner Operation - Heat Wise SU-3 Manual

199,000 btu/h to 400,000 btu/h, 300,000 btu/h to 550,000 btu/h
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When commissioning the burner, make sure the gas control knob is in the "ON" position. Install
monometers at the inlet pressure tap and outlet pressure tap. Record the static incoming gas pressure.
Note: When checking manifold pressure, do not subtract burner housing pressure during valve-on delay
When the burner lights off, record the running incoming gas pressure; the running incoming gas pressure
should never be below 5". Note: this pressure drop should not be greater than 1".
Check the manifold pressure from the outlet pressure tap. Refer to Table 5 on page 9 to make sure the gas
pressure is set for the appropriate fuel and pressure. If adjustments need to be made, remove the cap screw
and adjust the pressure regulator. Screwing the regulator clockwise will increase the manifold pressure and
counter-clockwise will decrease the manifold pressure.
Before turning the burner on, check for gas supply leaks. Check the wiring diagrams; install
manometers before and after the gas valve. Keep the observation port of the boiler or furnace open.
Follow the instructions on the nameplate of the burner to turn it on. Follow the sequence of operations
for the control (see pages 10 and 11). Record the readings below.
COMMISSIONING/TROUBLESHOOTING CHECKLIST
There are four factors that are needed to operate the gas burner:
____ 1. Combustion Air
____ 2. Electricity
____ 3. Gas Flow
____ 4. Combustion Analysis
1. Combustion Air
Check the air coming into the area where the burner is located.
____ 1. If the burner is in a large area that air can come into freely (i.e. an open basement for home heating
systems), then the air supply should be sufficient for the burner.
____ 2. If the burner is in an enclosed area (i.e. small room or closet) then fresh air must be supplied to the
burner. The intakes to the area must terminate facing down in order to avoid obstructions. The
total open free area must be 1 in
Example

Burner Operation

2
per 10,000 BTU input
350,000 Btu/hr firing Rate
(
)
350
,
000
BTU
/
hr
*
10
Fig. 10 Side View of Front of Burner
( )
2
1
in
2
=
35
in
,
000
BTU
/
hr
Optimal place for manifold
readings. Loosen Screw and
attach manometer.
Lo
13
.

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This manual is also suitable for:

Su-4Su-4anSu-4nSu-4p

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