U.S. Boiler Company K2WT-080B, Installation, Operating And Service Instructions

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101 107672-01- 7/17
nOTiCE
This boiler has a limited warranty, a copy of which is included with this boiler. It is the responsibility of
the installing contractor to see that all controls are correctly installed and are operating properly when the
installation is complete.
Table 11.5A: Typical Combustion Readings (Sea Level Only)
XI. Start-Up and Checkout
(continued)
Boiler Size
Measured High Fire %CO
2
*
Maximum CO Air-Free
Range Target
080
8.7-9.2 9.1 200ppm
100
120
150
180
* Low Fire Range and Target values are the same as High Fire above. Ensure low fire CO
2
reading is less
than or equal to high fire CO
2
reading.
Boiler Size
Measured High Fire %O
2
**
Maximum CO Air-Free
Range Target
080
4.7-5.6 4.9 200ppm
100
120
150
180
** Low Fire Range and Target values are the same as High Fire above. Ensure low fire O
2
reading is greater
than or equal to high fire O
2
reading.
Model # Counter-clockwise Turns (From Fully
Closed)
080 9-3/4
100 9-3/4
120 12-1/4
150 10
180 15
Table 11.5B: Starting Number of Throttle Turns for Natural Gas