Changing Nozzle; Set Burner For Efficient Operation - KERR COMPACT-multi Installation, Operation And Maintenance Manual

K4C COMPACT-MULTI – INSTALLATION/OPERATION MANUAL
3.8

CHANGING NOZZLE

NOZZLE CHANGE
3.9

SET BURNER FOR EFFICIENT OPERATION

SET END CONE
PUMP PRESSURE
BURNER AIR
SAMPLING HOLE
DRAFT PRESSURE
BURNER SETTING
EFFICIENCY
FLAME CHECK
Always set flame with proper draft, smoke and CO
DO NOT START BURNER UNTIL ALL FITTINGS AND COVERS ARE IN PLACE.
K4C Compact-multi
If a new nozzle of a different size is installed, change the
heating blower speed according to the specifications table.
Set turbulator to furnace operating decal settings.
Particularly if you change nozzles.
Refer to "BURNER SPECIFICATIONS" or operating decal.
Set air damper as settings on operating decal.
On smoke/vent pipe, between appliance breech and draft
control, punch or drill a 1/4" round opening. Not applicable
to Direct Vent.
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.
Set the burner to give a stable symmetrical flame. After 15
minutes of normal operation, check SMOKE for #0-trace
reading and measure CO
required.
Always leave burner set with CO
lower than the peak efficiency achieved with a #0-trace
smoke (e.g. a #0-trace reading of 12.5% CO
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.
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, use only nozzle types specified
on settings label.
7
. Re adjust the burner controls as
2
reading about 1% of CO
2
measurements.
2
2
should be set
2
Feb
-06