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regulator. Do not open manual gas valve
Arctic Installation and Operation Manual
directly outside the boiler jacket.
2. Purge gas line of air.
3. Open manual ball valve outside boiler
jacket. Confirm that the supply pressure
to the manual ball valve tapping outside
the boiler jacket conforms to Table 4 for
maximum and minimum supply pressure.
4. Repeat steps 2 and 3 for boiler gas train
components.
5. Reset low gas pressure safety switch.
4.6
Select Operational Mode:
Refer to the Concert Boiler Control manual to
select the desired control features. Allow the
boiler to complete its standard startup
procedure (pre-purge, pre-ignition, and light-
off), and once again using the gas leak
detector, inspect the fuel gas train both inside
and outside of the boiler for gas leakage.
4.7
Begin Commissioning the Boiler:
Measure gas pressure at tapping on manual
gas valve at boiler inlet and confirm that the
inlet gas pressure is within the acceptable
range found in Table 4 at high and low fire.
1. Confirm that Oxygen (O2) level in the
boiler's flue gas is within 3.8 to 4.2% at
high fire and 4.3 to 4.7% at low fire. Refer
to Figure 6 for throttle adjustment.
Thermal Solutions, 1175 Manheim Pike, Lancaster, PA 17601 Web:
Phone: 717-239-7642 Fax: 877-501-5212 Email:
29
Figure 6: High and Low Fire Adjustments
on the Main Gas Valve Regulator
DANGER
Failure to properly adjust excess air will
result in unsafe level of carbon
monoxide. Variations in venting or
combustion
air
temperature will change excess air.
Adjust excess air levels so that variation
in venting or combustion air pressures
and temperatures caused by change of
seasons, wind conditions, opening or
closing of boiler room doors or
windows do not cause the boiler to
operate
with
carbon
concentration above 400 parts per
million.
a. Turn throttle clockwise to increase
gas.
b. Turn throttle counter clockwise to
decrease gas.
c. After each adjustment, close all jacket
panels and doors and wait until O2
level has stabilized before making any
additional adjustments. This may take
approximately 15 minutes.
www.thermalsolutions.com
sales@thermalsolutions.com
Form: 2435
Revision: 8
Date: 9-19-2016
pressure
and
monoxide
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