CHAPTERS
A.
GENERAL
While each boiler is tested for correct operation
before shipment from the factory, variable con-
ditions such
as
burning characteristics
of
the
fuel
and
operating load conditions may require fur-
ther adjustment after installation
to
assure maxi-
mum
operating efficiency
and
economy.
ADJUSTMENT
PROCEDURES
A combustion efficiency analysis made during
the
initial start-up
will
help to determine what
additional adjustments are required
in
a par-
ticular installation.
Prior to placing the boiler into service, a complete
inspection should be made
of
all controls,
con~
necting piping, wiring, and all fastenings such
as
nuts, bolts and setscrews to
be
sure that
no
damage or misadjustments occurred during ship-
ment
and
installation.
OIL MODULATING
~M
GAS
MODULATING
MODULATING
MOTOR
MODULATING
MOTOR
ARM
CAM
·ROTARY
AIR
BUTTERFLY
GAS
VAL.VE
ROO
I:WotPER
JACKS
HAFT
AAM
.o..--~-..,...;..~-
OVERTRAVEl
UNKAGE
SPRINQ LOADED
8U1TERFL
Y
BUTTERFLY
GAS
VAlVE
AAM
GAS
VAlVE
CAM
ADJUSTING
SCREW
OIL METERING VAL
ROTARY AIR
CAMPER
SHAFT
FUEL
OIL
CONTROLLER
NOTE:
SETllNGS
IN
DIAGRAM
INDICATE
LON
ARE
SETllNG
OF
UNKAGE.
[FIGURE 5·1/ COMPLETE UNKAGE
ASSEMBLY-
COMBINATION GAS AND OIL]
CHAPTER 5-2 750-150
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