Dunkirk Q90-50 - Page 7

Model 90-75 propane (LP) units only at altitudes
above 5,000 ft., install 90-75 High Altitude Orifice Kit
#550002629*.
For all other altitudes use sea level orifice
Table 3 - PROPANE GAS
Altitude in Ft.
Normal Input (MBH)
Combustion Setting (CO2)
Orifice
Altitude in Ft.
Normal Input (MBH)
Combustion Setting (CO_)
Orifice
0-5,000
50 1 [ 1 1
10.0-11.1% (CO < 100 ppm)
43331095 43331095
0-5,000
75 1 [ l 1
10.0 -11.1% (CO < 100 ppm)
43331093 J 43331096*
* For model 90-75 Propane units only at altitudes above 5,000 ft., install 90-75 High Altitude Orifice Kit #550002629 For all other
altitudes use sea level orifice.
Altitude in Ft.
Normal Input (MBH)
Combustion Setting (CO_)
Orifice
0-5,000 5,000-10,000
100 - 1 - [ - J - 1 -
10.0-11.1% (CO < 100 ppm)
43331091 J 43331091
++Contact local gas utility or distributor for Btu value of gas.