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to either
main or pilot burner.
PILOT,
which
permits
gas to flow
to pilot burner
only (when
gas cock
knob is held depressed
or when
generator
is heated
sufficiently
to hold valve
open).
ON, which
permits
gas to flow
to both main and
pilot burners
when
the system
is calling
for heat.
PILOT
LIGHTING
PROCEDURE
1. Slightly
depress
Lite-Rite
knob if at PILOT
position
and turn clockwise
m
to OFF. Wait
5
minutes
for all unburned
gas to vent.
REMEMBER
that
LP gas does not vent upward
naturally.
2. Turn the Lite-Rite
knob to PILOT,
depress
it
completely,
and light the pilot burner.
The knob must
be held down
about
one minute
before
the pilot
burner
will stay lit after
releasing
the knob.
3. Turn the knob to ON,
and set the thermostat
above
room temperature
to turn on main burner.
TEST
FOR GAS
LEAKS
WARNING
-
DO NOT OMIT
THIS
TEST
With
main burner
in operation,
paint
pipe joints,
pilot gas tubing connections,
and valve gasket lines
with rich soap and water solution.
Bubbles indicate
gas leakage.
To stop leak, tighten joints and screws
or replace
the gasket.
ADJUST
PILOT FLAME
The pilot flame
should
envelop
3/8
to l/2
inch of the tip of the thermocouple.
Remove
pilot adjustment
cover
screw
(refer to Fig. 1).
Turn inner adjustment
screw
clockwise
mto
decrease
or counterclockwise
n
to increase
pilot flame.
Be sure to replace
cover
after
adjustment
to prevent
possible
gas leakage.
PROPER
3/S TO 112 INCH
CHECK GAS INPUT TO APPLIANCE
IMPORTANT
Do not exceed
input rating
stamped
on
nameplate
of appliance,
or manufacturer's
recommended
burner
orifice
pressure
for size
orifice(s)
used.
Make
certain
primary
air supply
to main burner
is properly
adjusted
for complete
combustion.
Follow
instructions
of appliance
manufacturer
if provided.
NOTE:
IF METER
CLOCKING
METHOD
IS USED
Make
certain
there
is no gas flow
through
the
meter
other than to the appliance
being checked.
Other
appliances
must remain
off, and the pilot
extinguished
(or their consumption
deducted
from
the meter
reading).
'A"
MODEL
PROCEDURE
(with
pressure
regulator)
1. Check
input to main burner
by clocking
gas
meter
or by using a pressure
gauge
(manometer)
connected
to downstream
tapping
(Fig.
1). The
standard
natural
gas model
is factory
set at 3.5
inches
WC outlet
pressure,
and the standard
LP gas
model
is set at 11 inches.
If adjustment
is required,
proceed
with
step 2.
2. Remove
cover
screw
(see Fig. 1). Using
screwdriver,
turn adjusting
screw
clockwise
m
to
increase
or counterclockwise
n
to decrease
gas
pressure
to burner.
(Note:
Adjustment
fitting
is
plastic
and may require
slightly
greater
turning
force
than metal
thread.)
Replace
cover
screw.
"B"
MODEL
PROCEDURE
(no pressure
regulator)
1. With
main burner
off, connect
pressure
gauge
(manometer)
to downstream
pressure
tapping
(Fig. 1).
2. With
main burner
operating,
check
burner
manifold
pressure.
3. If pressure
is not as specified
by the appliance
manufacturer,
readjust
regulator
on LP gas storage
tank.
STEP-OPENING
PRESSURE
REGULATOR
1°C"
MODELS)
1. With
main burner
operating,
check
input by
clocking
gas meter,
or check
burner
manifold
pressure
using pressure
gauge
(manometer)
connected
to downstream
pressure
tapping
(Fig. 1).
2. If adjustment
is required,
remove
cover
screw.
Using a small screwdriver,
turn adjusting
screw
clockwise
m
to increase
or counterclockwise
n
to decrease
gas pressure
to burner.
Replace
cover
screw.
3. Check
burner
performance
at step pressure,
observing
burner
ignition
and flame
characteristics.
Burner
should
ignite
properly
and without
flashback
to orifice,
and all ports should
remain
lit. Cycle
burner
several
times
(wait
30 seconds
between
cycles
to allow
servo regulator
to resume
step
action.)
Repeat
after
allowing
appliance
to cool.
CHECKOUT
Put the system
into operation
and observe
through
complete
cycle
to be sure all controls
function
properly.
Make
certain
the Pilotstat
unit shuts off gas
flow
to main burner
within
2-l/2
minutes
after
pilot
flame
is extinguished.
3
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