Eclipse Linnox SP CCS-LS Installation Manual page 16

Low fire settings
High fire settings
16
6. Set system control to stay at low fire during and after ignition
sequence or set control motor to manual.
7. Adjust gas flow with the low-fire bias adjustment screw
for lowest gas flow that maintains a stable flame signal:
- clockwise, for more fuel
- counter-clockwise, for less fuel
With ionisation flame safe guarding adjust until a stable flame
signal of min. 15 µA at cold recirculation air conditions or 20
µA at hot recirculation air conditions>390°F (>200°C).
With UV flame safe guarding, ensure that lowest flame signals
are stable and significantly higher than the switch off.
At low fire the gas diffential pressure across the mixer will be
too low, approximately .08"w.c. (0,2 mbar) for a reliable
adjustment.
Eventually, the static gas pressure at the mixer can be used as
a pre-setting of the burner.
Note:
A visual check of the flame is important to ensure the correct
burner adjustment.
If the recirculating process air is cold >212°F (<100°C), the
burner elements will not glow or just partly start to glow.
If the recirculating process air is hot >390°F (>200°C), the
burner elements will partly glow.
The visual appearance of the low-fire flame is clear blue, with
some glowing parts of the burner elements.
8. Set the burner to high fire:
a. Check the differential air pressure.
b. Adjust the corresponding gas pressure with the
adjustment valve (7).
Fasten the lock screw at the adjustment valve after
finishing adjustment.
Note:
A visual check of the flame is important to ensure the correct
burner adjustment. The flame will be sharp blue-white with a
slightly orange glowing tip. The length of this tip depends on
the burner capacity rating.
If the flame tip is dominantly orange, the burner may be set
too gas rich. Refer to Section 7 for trouble-shooting tips.
The burner flame shields are allowed to glow red hot,
depending on the burner capacity rating and the process
temperatures.
Eclipse Linnox Model CCS-LS, Installation Guide 159, 2/20/04