UTICA BOILERS UB90-100, Installation Manual

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NOTE: 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.
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