Dunkirk 90-100, Installation, Operation & Maintenance Manual, Page: 7 / 56

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TABLE #2: SERIES 90 PROPANE GAS
SERIES 90-50
Stock Factory Btu Value of LP Gas++
Settings 2300 2350 2400 2450 2500
Altitude in Ft. 0-5,000 5,000-10,000
Normal Input (MBH) 50
– – – – –
Manifold Pressure In W.C. 2.5 3 3 2.5 2.5 2.5
Orifice
43331095 43331095
SERIES 90-75*
Stock Factory Btu Value of LP Gas++
Settings 2300 2350 2400 2450 2500
Altitude in Ft. 0-5,000 5,000-10,000
Normal Input (MBH) 75 – – – – –
Manifold Pressure In W.C. 2.5 3.5 3.5 3.5 3 3
Orifice
43331093 43331096*
* For model 90-75 LP units only at altitudes above 5,000 ft., install 90-75 High Altitude Orifice Kit #550001810. For all other alti
-
tudes use factory installed orifice.
SERIES 90-100
Stock Factory Btu Value of LP Gas++
Settings 2300 2350 2400 2450 2500
Altitude in Ft. 0-5,000 5,000-10,000
Normal Input (MBH) 100 – – – – –
Manifold Pressure In W.C. 2.5 3 3 3 2.5 2.5
Orifice
43331091 43331091
++Contact local gas utility or distributor for Btu value of gas.
boilers for use aT HigH alTiTude
NOTICE
For model 90-75 LP units only at altitudes
above 5,000 ft., install 90-75 high Altitude
Orifice Kit #550001810*. For all other
altitudes use factory installed orifice .