SECTION II
INITIAL
START UP
1. NOTE: Read
the applicable sequence of
burner/primary
gas
control operation in
Section 3
Operation
and
Troubleshooting
before
proceeding.
2. Depress the
combination
gas
valve manual
control
knob
and turn to
"OFF"
position.
3. Adjust the
primary
air
and
off-cycle
damper
to
the
start up
settings shown
in Figure 12Aand 128.
4.
On
new
gas
line installations,
air
may
be trapped
in
the line, the burner may
experience several
lockouts
until all the air
is
purged
from the lines.
5.
Turn
on the main electrical
power
and
set
the
thermostat or operation control to call for heat.
Allow the burner to run a MINIMUM
of 5
minutes
to
purge
combustion
chamber and appliance
heat
exchanger.
6.
Set the thermostat or operating control below room
temperature,
shutting
the
burner
"OFF"
1 minute
to
RESET the
primary
control.
7. Depress the
combination
gas
valve manual
control
now
and turn to
"ON"
position.
8.
Set the thermostat
or
operating
control to call
for
heat.
The burner will
start and
go
through the
applicable sequence of burner/primary
gas
control
operation,
refer
to step 1.
9. Once burner is
running
adjust the orifice manifold
pressure
regulator
as described
in
paragraph
J
-
Pressure Regu lator
Adjustment.
10. A more
accurate BTU
(kW)
input
can be determined
by
using the
NATURAL
gas
service meter with the
burner
only on
(all
other
gas
appliances should be
off). The hand
on
the
gas
meter
dialwith the
lowest
cubic feet valve
(fastest
revolving
dial),
should
be
clocked for one complete revolution
and use the
following formula.
3600 x cubic ft.
(m3)pre
revolution x
btu
(kW)valve/cub
ic
fl
(m3)=
BTU/HR
(kWH0
seconds
oer
revolulion
EXAMPLE: 3600 x 1 x 1000
(.2931k$
=
300,000 BTU/HR
(87.93
kWHB)
12
11. After
the desired input has
been obtained,
re-adjust
the
primary
air damper open or closed to
visually
obtain
a blue
flame with well
defined orange or
yellow
tips for natural
gas,
or well defined
yellow
tips
for
propane gas.
12. After
the burner
has
been
in
operation
for
at
least
10
minutes,
assuring
combustion
chamber and
heat
exchanger are
fully warmed, take combustion
analysis flue
gas
samples
just
ahead of the draft
control in the
flue
pipe.
NOTE:
ALWAYS USE
RELIABLE
COMBUSTION
TEST
INSTRUMENTS.
BEING
PROFICIENT IN THE USE OF
THESE
INSTRUMENTS AND INTERPRETING
THEIR DATA IS NECESSARY FOR
SAFE,
RELIABLE AND EFFICIENT BURNER
OPERATION.
13. Perform
the
following
combustion
analysis. All
adjustments
below
must
be
made with
the
following
instruments: draft
gauge,
02 or CO2 analyze and
CO tester.
A. Adjust the
primary
air damper
to
provide
about
257o excess combustion air.
Confirm
this
by
checking the
flue
gas
for its
FREE
OXYGEN
(Oz)
or CARBON DIOXIDE
(COz)
PERCEN-
TAGES with
a
test instrument. Free
oxygen
should
be about 4.5"/o,
or carbon dioxide should
be about
9.5%
for natural
gas,
12.1"/" for
propane gas.
B.
CARBON
MONOXIDE
-
Should
be checked for
its
presence
in the flue
gas.
This
percentage
should
not
exceed
.04/"
(or
400
PPM).
C. NOTE: Check overfire draft and adjust
to
NEGATIVE
-.01
(2.491Pa)
to
-.02
(4.982Pa)
inches w/c during
burner operation.
PAGE
7
SECTION
II
INITIAL START
UP
1.
NOTE: Read the applicable sequence of
burner/primary gas control operation in
Section 3 Operation and Troubleshooting
before proceeding.
2.
Depress the combination gas valve manual control
knob and turn to "OFF" position.
3.
Adjust the primary air and off-cycle damper to the
start
up
settings shown
in
Figure 12A and 12B.
4.
On new gas line installations, air may
be
trapped
in
the line, the burner may experience several
lockouts until
all
the air
is
purged from the lines.
5.
Turn
on
the main electrical power and set the
thermostat or operation control
to
call for heat.
Allow the burner
to
run
a MINIMUM of 5 minutes
to
purge combustion chamber and appliance heat
exchanger.
6.
Set the thermostat or operating control below room
temperature, shutting the burner "OFF" 1 minute to
RESET the primary control.
7.
Depress the combination gas valve manual control
now and turn to "ON" position.
8. Set the thermostat or operating control to call for
heat. The burner will start and go through the
applicable sequence of burner/primary gas control
operation, refer
to
step
1.
9.
Once burner is running adjust the orifice manifold
pressure regulator as described
in
paragraph J -
Pressure Regulator Adjustment.
10. A more accurate
BTU
(kW) input can
be
determined
by using the NATURAL gas service meter with the
burner only
on
(all other gas appliances should
be
off). The hand
on
the gas meter dial with the lowest
cubic feet valve (fastest revolving dial), should
be
clocked for one complete revolution and use the
following formula.
3600
x
cubic
ft.
(m
3
)pre
revolution
x
btu
(kW)
valve/cub
ic
ft
(m
3
)
=
BTUIHR
(kW/Hr)
seconds
per
revolution
EXAMPLE:
3600
x 1x
1000
1.2931
kW)
=
300,000
BTU/HR
(87.93
kW/HR)
12
11. After the desired input has been obtained, re-adjust
PAGE 7
the primary air damper open or closed to visually
obtain a blue flame with well defined orange or
yellow tips for natural gas, or well defined yellow tips
for propane gas.
12. After the burner has been
in
operation for at least 10
minutes, assuring combustion chamber and heat
exchanger are fully warmed, take combustion
analysis flue gas samples just ahead of the draft
control
in
the flue pipe.
NOTE: ALWAYS USE RELIABLE COMBUSTION
TEST
INSTRUMENTS. BEING
PROFICIENT
IN
THE USE OF THESE
INSTRUMENTS AND INTERPRETING
THEIR DATA IS NECESSARY FOR SAFE,
RELIABLE
AND EFFICIENT BURNER
OPERATION.
13. Perform the following combustion analysis. All
adjustments below must
be
made with the following
instruments: draft gauge,
02
or
C02
analyze and
CO
tester.
A.
Adjust the primary air damper
to
provide about
25% excess combustion air. Confirm this by
checking the flue gas for its FREE OXYGEN
(0
2
) or CARBON DIOXIDE (C02) PERCEN-
TAGES with a test instrument. Free oxygen
should
be
about 4.5%, or carbon dioxide should
be
about 9.5% for natural gas,
12.1
% for
propane gas.
B.
CARBON MONOXIDE - Should
be
checked for
its presence
in
the flue gas. This percentage
should not exceed .04% (or 400 PPM).
C.
NOTE: Check overfire draft and adjust to
NEGATIVE
-.01
(2.491
Pa)
to -.02 (4.982Pa)
inches w/c during burner operation.
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