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User Manual

ManualsBrandsSunStar ManualsGas & Oil HeatersSIR Series Propane Infrared Compact U Tube Heater, 15' Tube Length, 35000 BTU
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Form 43471010
-32- Dec 2017
17.1) SEQUENCE OF OPERATION – TWO STAGE (N7/L7)
The chart below shows the sequence of operation for the normal operating cycle for a two stage heater (N7/L7).
.If the flame is not sensed during sequence T3 or T4, then the burner will automatically begin ignition as in
sequence T2. If the flame is not re-established the heater will go to lockout.