Lennox International Inc Gas-Fired Hot Water Boiler, GWB9-075IH-2 90 50/75 Series 2 Propane 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 Orifice Kit #550002629*.

For all other altitudes use sea level orifice

Table 3 - 90 - 50/75 SERIES 2 PROPANE GAS

MODEL 90-50

	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
Orifice	43331095			43331095
	MODEL 90-75*
	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
Orifice	43331093			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.

++Contact local gas utility or distributor for Btu value of gas.

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