Element
Section 8: Water Heater and AquaSolve Startup:
L-OMM-0003_A
• 10/8/2021 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page
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8.6.1 Burner Combustion Adjustment
– General
W A R N I N G !
If carbon monoxide is in excess of 200 ppm at any point, do not operate unit. Contact your Lync
representative for assistance. Carbon monoxide (CO2) is a colorless, odorless and poisonous
gas that is extremely dangerous to humans and animals. CO2 levels above 200 ppm can cause
property damage, personal injury, exposure to hazardous materials or death.
1. With the burner firing, measure the flow gas pressure at the beginning of the gas train.
a) If the inlet flow gas pressure for Natural Gas is equal to or greater than 3.5 inches water
column, or if the inlet flow gas pressure for Propane Gas is equal to or greater than 8.0
inches water column, continue startup.
b) If the inlet flow gas pressure drops below these levels a supply gas volume or piping
problem may exist and must be corrected before startup can continue.
2. With the burner firing, monitor the combustion analyzer readings. The CO2 level must be
between 8.5 and 9.5% for Natural Gas and between 9.5 to 10.5% for Propane Gas.
a) If the CO2 level is in this range, no adjustment is required or recommended.
b) If the CO2 level is outside of these ranges, the combustion must be optimized.
8.6.2 Optimizing Combustion
Element uses a modulating burner control system with a larger gas regulator and separate safety
solenoid gas valves. The CO2 level on these models must be adjusted at both Low Fire and High
Fire in the Manual Override menu, through the EOS Touch Screen Digital Control.
To access the Manual Override Menu:
1. Press and hold the
HOME
button for 3 seconds.
2. Press the
NEXT ITEM
or
ITEM BACK
buttons to navigate to the
TOOLBOX
menu.
3. Press the
ENTER
button to display the
ACCESS
screen.
4. Press the
UP
or
DOWN
arrow buttons to select the
ADVANCED
setting.
5. Exit the menu by pressing the
HOME
button.
6. Press the
NEXT
ITEM
or
ITEM
BACK
buttons to navigate to the
OVERIDE
menu.
7. Press the
Enter
button to display the
MANUAL
OVERRIDE
screen. Press the
UP
or
DOWN
arrow buttons to select the
HAND
setting.
8. Press the
NEXT ITEM
or
ITEM BACK
buttons to navigate to the
HEATER MODULATION
(HTR MOD)
menu. This setting will override the operating control.
9. Press the
UP
or
DOWN
arrow buttons to select firing rate.
NOTE
: If the
HTR
MOD
program is
activated while the burner is firing, the burner will shut down and recycle.
10. Press the
UP
or
DOWN
arrow buttons to adjust the firing rate from
OFF
to the minimum rate
of 10% for
Low
Fire
. Then adjust the
Gas
Regulator
screw clockwise to increase gas flow
and increase CO2, or counter-clockwise to decrease flow and decrease CO2.
