Operating instructions

7
Table 3 - PROPANE GAS
MODEL 90-50 SERIES 2
Stock Factory Btu Value of Propane 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
Orifi ce 43331095 43331095
MODEL 90-75* SERIES 2
Stock Factory Btu Value of Propane 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
Orifi ce 43331093
43331096*
* For model 90-75 Propane units only at altitudes above 5,000 ft., install 90-75 High Altitude Orifi ce Kit #550002629 For all other
altitudes use sea level orifi ce.
MODEL 90-100 SERIES 3 **
Stock Factory Btu Value of Propane 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
Orifi ce 43331091
43331091
** Propane on 90-100 models applies to Series 3 models only. 90-100 Series 2 models are not approved for propane.
++Contact local gas utility or distributor for Btu value of gas.
BOILERS FOR USE AT HIGH ALTITUDE - UNITED STATES INSTALLATIONS
Model 90-75 propane (LP) units only at altitudes
above 5,000 ft., install 90-75 High Altitude Orifi ce Kit
#550002629*.
For all other altitudes use sea level orifi ce