KD GEMINI – INSTALLATION/OPERATION MANUAL
KD Gemini
May-06
7
3.8 SET BURNER FOR EFFICIENT OPERATION
SET END CONE
Set turbulator to operating decal settings.
Particularly if you change nozzles.
PUMP PRESSURE
Refer to “BURNER SPECIFICATIONS” or operating decal.
BURNER AIR
Set air damper as settings on operating decal.
SAMPLING HOLE
On smoke/vent pipe, between appliance breech and draft
control, punch or drill a 1/4” round opening.
Direct Vents have a sampling port located on the breach
connecting adaptor.
DRAFT PRESSURE
Using an accurate draft meter, adjust the draft control to obtain -
0.04” wc draft pressure at the breech sampling hole. Use two
barometric dampers if necessary.
Not applicable to Direct Vent.
BURNER SETTING
Set the burner to give a stable symmetrical flame. After 15
minutes of normal operation, check SMOKE for #0 – trace
reading and measure CO
2
.
Re-adjust the burner controls as
required. When the burner is set, lock the adjustments with the
locking nuts
EFFICIENCY
Always leave burner set with CO
2
reading about 1% lower than
the peak CO
2
efficiency achieved with a #0 – trace smoke (e.g.
a #0 – trace reading of 12.5% CO
2
should be set back 1% to
11.5%). This gives better allowance for fuel and draft variations
and maintains a better seasonal efficiency. When the burner is
set, lock the adjustments with the locking nuts.
FLAME CHECK
Look through view port to check the flame after setting the
burner. If the flame is not clean and symmetrical, reset the
burner or replace the nozzle, only use nozzle types specified in
“BURNER SPECIFICATIONS” or operating decal.
Always set flame with proper draft, smoke and CO2 measurements.
DO NOT
START BURNER UNTIL ALL FITTINGS AND COVERS ARE IN PLACE.