46
12. Turn boiler off and repeat Steps H.7-H.10 at least
ve times to conrm proper main burner operation.
I. Begin Commissioning the boiler - With main ame
on, at high re, measure gas pressure upstream and
downstream of the main gas valves
1. Adjust the manifold pressure to match the pressure
indicated on the factory retest label.
2. Reassure that the inlet gas pressure is within the
acceptable range found in Table 2. Adjust if
necessary.
WARNING
Failure to properly adjust gas input rate will
result in over ring or under ring of the
appliance. Improper and unsafe boiler operation
may result.
3. Conrm that high and low gas pressure switches are
functioning and are adjusted to prevent over ring
or under ring of the boiler.
4. Adjust setting of air lter ow switch by rotating
knob on switch counter clockwise until change
lter light switch is illuminated. Turn switch knob
clockwise ¼ turn past the point where the change
lter light goes out. Replace upper front jacket
panel.
5. With boiler running and all panels attached,
measure oxygen (O
2
) and carbon monoxide
(CO) concentrations in the ue gas and ue gas
temperature. Compare results with values given on
factory retest report supplied with the boiler.
DANGER
Failure to properly adjust excess air will result
in unsafe levels of carbon monoxide. Variations
in venting or combustion air pressure and
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 monoxide concentrations above 400
parts per million.
6. Verify that all safety and operating limits and ame
controls are operating properly. These controls
and limits include combustion air switch, water
temperature operating control, manual reset water
temperature safety limit, vestibule fuseable link,
mixer fuseable link, high and low gas pressure
switches. Refer to manuals for these components
for proper start-up and operating instructions.
Follow all instructions contained in these manuals.
This manual was provided with the boiler.
J. Finish Commissioning at the Boiler - Reconnect any
wires from the external control system, if applicable.
1. Test function of external control system.
2. Place system control back in normal operation, if
necessary.
K. Water Treatment - Contact reputable chemical
treatment company for recommendations on proper
water treatment for the installation. Each installation
is different and must be analyzed based on local water
conditions and boiler operating schedule.
The treatment chemicals must be compatible with
copper, bronze, steel and cast iron materials of
construction.
CAUTION
A proper water treatment and a monitoring program will extend the life of the boiler. The water shall have
a maximum water hardness of 8.5 grains or 150 ppm. The recommended pH range is 8.8 to 9.2. However,
other aspects of water quality can affect boiler operation and longevity. A qualied water treatment expert
should be consulted to develop a complete water treatment plan.
WARNING
Chemicals used in treating boiler water are toxic and/or harmful. Always use protective clothing and
equipment when working with/near chemicals. Contact local authorities to determine if treated boiler water
can be discharged into local waste water system.
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