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Thermific
®
Gas-Fired Boiler Operation/Maintenance
Page 10
When the chart is completed, set up your boiler's
combustion to the corresponding information at the
temperature relative during the time of the start up.
Enter your 100º F
operational range.
% Oxygen % Carbon
Dioxide
8 7.2
7.9 7.3
7.8 7.4
7.7 7.4
7.6 7.5
7.5 7.5
7.4 7.6
7.3 7.6
7.2 7.7
7.1 7.7
7.0 7.8
6.9 7.8
6.8 7.9
6.7 8
6.6 8
6.5 8.1
6.4 8.1
6.3 8.2
6.2 8.2
6.1 8.3
6 8.3
Important:
measure combustion air temperature at the
unit;
do not
assume the combustion air temperature is
the same as the outside air temperature.
4.2.1 Combustion Air Requirement, SCFM
Series
700
Series
1000
Series
1200
Series
1500
Series
1700
Series
2000
170 251 291 364 413 501
5.0 MAINTENANCE
Maintenance procedures for the Direct Vent option are
the same as for the standard Thermific® model. Refer
to the Thermific Installation and Owner's Manual.
"TBIG," latest edition.