Fulton Endura (EDR) Condensing Hydronic Boiler - Manual (Page 39)

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3-5
SECTION 3
EDR-IOM-2014-0318
OPERATION
!
WARNING
Non-Fulton product information is for
reference purposes only. No Fulton
document should substitute for full
review of documentation available
from the component manufacturer.
4
CAUTION
When making changes to the controls
profi le, a combustion analyzer is
required.
FIGURE 10 - DUNGS GAS VALVE
SOLA “manual fi ring rate” screen (Figure 14).
10. Connect an inches of water column measuring device (i.e., manometer) to
the Enrichment gas valve test port (Figure 10). Insert combustion analyzer
probe into the fl ue gas outlet port.
11. Open the front access door and locate the Enrichment test button located
at the top of the electrical box. Turning the Enrichment test button on
activates a “1-shot relay” allowing 30 seconds to measure the Enrichment
gas valve outlet pressure and stable O2%. Use the factory test fi re sheet
to reference the Enrichment gas valve outlet pressure and O2%. (site
conditions will ultimately determine specifi c settings).
» Table 8 provides approximate valve outlet pressure ranges.
» Typical O2 percentage is 1.8 to 2.5%.
» Button should only be pushed ONCE during this exercise.
12. The enrichment gas regulator (Figure 10) may be used to increase or
decrease the valve outlet pressure as required.
NOTE:  The fi eld O2% at low fi re impacts the Enrichment O2%. Always set
fi eld combustion at low and high fi re prior to completing the above steps!
2.5 mm Allen
adjustment for
off set to adjust low
fi re
Flat head screw adjustment
for shutter to adjust high fi re
Test port for
measuring
manifold gas
pressure
Test port for measuring
enrichment valve outlet
pressure
Enrichment
gas valve
Enrichment gas regulator
(with integral vent limiter)
Measure gas
valve supply
pressure
here