CHAPTER4
STARTING AND OPERATING
INSTRUCfiONS
starters and controls having manual reset fea-
tures. Check the lockout switch
on
the program·
mer and reset
if
necessary.
The
boiler should be filled with water to the
proper operating level using water
of
ambient
temperature. Make sure that treated feedwater is
available and
used
..
In heating applications, the
entire system should be filled and vented. Refer
to Chapter 2 for water requirements. On a steam
boiler, open the test valve (Fig. 1-1) to vent air
displaced during filling. Leave the test valve
open until the escape
of
steam is noted after the
burner
is
operating.
CAUTION!
Prior
to
firing
a
boiler,
make
sure
that
the
discharge
piping
from
the
safety
valves
or
the
relief
valves, and
the
discharge
piping
from
all
the
blowdown
and
drain
valves
are ·piped
to
a
SAFE
point
of
discharge,
so
that
emission
of
hot
water
or
steam
·cannot
possibly
cause
serious
personal
Injury
or
death
to
per-
sonnel
or
damage
to
property.
Check all linkage for full and free movement
of
the damper and metering valves and cams. This
can
be done by loosening the linkage at the
damper motor connecting arm and manipulating
the linkage by hand.
Check for rotation
of
all motors by momentarily
closing the motor starter
or
relay.
The
blower
impeller rotation is counter-clockwise when
viewed from the front
of
the boiler. Air pump
rotation
is
clockwise when viewed from its drive
end.
Before operating the boiler feed pump
or
oil
supply pump,
be sure all the valves
in
the line are
open or properly positioned.
CHAPTER 4-2
For safety's sake, make a final
pre~start-up
in-
spection, especially checking for any loose
or
incomplete piping
or
wiring
or
any other situa-
tions that might present a hazard.
CAUTION!
Note
that
the
pressure
vessel
support
legs
are
welded
to
mounting
skids
In
front
and
secured
by
bolts
at
the
rear
of
the
pressure
vessel.
These
bolts
are
tightened
for
ship·
ment.
When
the
boiler
Is
in-
stalled, and
prior
to
initial
firing,
the
bolts
securing
the
rear legs
to
the
skid
must
be
loosened
to
allow
for
expansion
and
con-
traction
caused
by
differences
In
temperature
between
pres-
.
sure
vessel
and
skids
and
avoid
damage
to
the
equipment.
B.
CONTROL
SETTINGS -
STEAM AND HOT WATER
See
Chapter 5 for adjustment instructions for the
following controls.
Inspect operating limit control for proper setting.
(1)
The
pressure control
of
a steam boiler
should be
set
slightly above the highest
desired steam pressure, but at least
10%
lower than the setting
of
the safety valve.
(2) The temperature control on a hot
water boiler should
be
set
slightly above
the highest desired water temperature but
within the limits
of
the pressure vessel.
Inspect the high limit control for the proper set-
ting.
750-150
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