U2 COMBINATION VIEWING HEAD AND SIGNAL PROCESSORS
13
66-2071—02
MANUAL SETUP
Manual Configuration for Gas Firing
Applications with Multiple Burners
CAUTION
ALL ADJUSTMENTS SHOULD BE CARRIED OUT
BY A QUALIFIED PERSON.
BMS interlock(s) may require temporary bypass during
configuration. This operation should be carried out
under supervised conditions and limited to minimum
time. Remove bypasses as soon as configuration and
setup is completed.
Main gas control valve may include bypass PRV. Make sure at
least first burner is started up at minimum firing. In some
cases more than one burner may be started up at low fire
depending upon bypass PRV.
Follow manufacturer’s guidelines in controlling fuel flow as
additional burners are brought into service
1.
Go to menu for UVTron.
2.
Adjust gain settings to 50
3.
If applicable, go to UVSS menu and set UVSS gain to
zero. With zero gain, flicker frequency filter need not be
adjusted.
4.
If applicable, go to IR menu and set IR gain GI to zero.
With zero gain, flicker frequency filter need not be
adjusted.
5.
Go to Milliamp output gain GM and set at 50
6.
Go to Flame ON menu. Set this to 800 as an initial value.
7.
Go to Flame OFF menu. Set Flame OFF 600 as an ini-
tial value.
8.
Go to Flame Failure Response Time (FFRT). Select 3
seconds
9.
Go to Time Delay and select “0” seconds.
10.
Under supervised conditions, light off gas igniter.
11.
The viewing head will show in Green (UV mode) reading
between 0-3425.
12.
If necessary and when mounted on swivel mount or
adjustable device, adjust line of sight for the viewing
head for maximum signal. Lock up viewing head in this
position.
13.
If selected setting is not correct to recognize igniter
flame, adjust UV gain.
14.
Start the main gas firing per manufacturer's instructions.
15.
REPEAT THE ABOVE FOR ALL BURNERS - ONE AT
A TIME.
After all burners are in service and boiler load is above 90%,
perform the following for discrimination tests and adjustments.
a. Turn off the burner
b. Check if background signal is below “Flame Off”
threshold. If not, increase Flame Off threshold so
the background count is below set point
c. After 1 minute, re-start burner on pilot and then
main gas fuel.
d. Check that the U2 recognizes the pilot and main
flames. If the flame signal is below Flame On
threshold, lower Flame On threshold below flame on
signal.
e. Repeat all tests if any changes are made to Gain,
Flicker set point, Flame On and Flame Off Threshold.
NOTE: Above is a simplified version of discrimination
adjustments.
Vessels equipped with a large number of burn-
ers, “T” fired units and cross fired boilers will
require several adjustments including use of
multiple files for obtaining the required discrimi-
nation.
Manual Configuration for Oil Firing
Applications with Multiple Burners
CAUTION
ALL ADJUSTMENTS SHOULD BE CARRIED OUT
BY A QUALIFIED PERSON.
BMS interlock(s) may require temporary bypass during
configuration. This operation should be carried out
under supervised conditions and limited to minimum
time. Remove bypasses as soon as configuration and
setup is completed.
Main oil control valve may include bypass PRV. Make sure at
least first burner is started up at minimum firing. In some
cases more than one burner may be started up at low fire
depending upon bypass PRV.
Follow manufacturer’s guidelines in controlling fuel flow as
additional burners are brought into service.
For vessels equipped with gas igniters follow setup procedure
described above. For best discrimination, two channels may
be required to accommodate two different fuels firing. As an
example, after the gas igniter is established, introduce oil to
the burner and change the file number selection.
1.
Go to menu for IR sensor.
2.
Adjust gain settings to 50.
3.
Adjust Filter set point to 1
4.
If applicable, go to UVSS menu and set UVSS gain to
zero. With zero gain, flicker frequency filter need not be
adjusted.
5.
Go to Milliamp output gain GM and set at 50
6.
Go to Flame ON menu. Set this to 800 as an initial
value.
7.
Go to Flame OFF menu. Set Flame OFF 600 as an ini-
tial value.
8.
Go to Flame Failure Response Time (FFRT). Select 3
seconds
9.
Go to Time delay and select “0” seconds.
10.
Under supervised conditions, light off oil igniter (if appli-
cable).
11.
The viewing head will show in Red (IR mode) reading
between 0-3425.
12.
Skip this step if the viewing head is already adjusted for
gas igniter. If necessary and when mounted on swivel
mount or adjustable device, adjust line of sight for the
viewing head for maximum signal. Lock up viewing head
in this position.
13.
If selected setting is not correct to recognize oil igniter
flame, adjust IR gain and filter.
14.
Start the main oil firing per manufacturer's instructions.
15.
REPEAT THE ABOVE FOR ALL BURNERS - ONE AT
A TIME.
