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LAARS Heating Systems
3. Repeat this process until all RPMs identified have been setup.
2. Measure the combustion product to determine if the CO2 levels fall in the ranges listed in the table. If the
CO2
level is out of range adjust the CO
2 by using the gas valve display and the process below.
a.
Using the gas valve display Navigate to Home > Valve 1 > Settings > Fuel Air Ratio & Ignition >
Correction curve.
b.
Login to the gas valve. See Gas valve password and login section for detailed instructions.
c.
Press Start point commissioning.
d. Adjust CO
2 levels according to Table 21. Touch lean arrows to decrease CO2. Touch Rich arrows to
increase CO2. Double arrows move the CO2 richer or leaner faster than single arrows. In most cases
touching the double arrows is acceptable when adjusting the CO
2.
e.
When the CO2 level is set correctly
press set min
if setting the min modulation point,
press set
max
if setting the maximum point or Add Generic if setting a point between min and max. If the point
added or modified is close to another point on the correction curve the system will ask if overwriting
the existing point is ok.
f.
In some cases it may be necessary to delete the original curve points. To do this select the Deletion
tab. Select the point that should be deleted. The point selected will be highlighted on the correction
curve. Press Delete point.
11.E.2 Combustion at the Gas Valve Display
Table 21.
CO2
levels at various air supply temperatures
Air supply temperature
CO2 level
F
º
C
º
%
Between
40 - 100
4 - 38
8.5
Below
39
4
8
Above
101
38
9
