Service manual

UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL
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15.2.2
Remove 4 screws to remove manifold.
Ensure gas tight fitting of injectors.
Ensure correct alignment with burners.
Ensure all pipe joints are gas tight.
Burner Injectors for Models UHA[T][X][S] 150-250
MODEL
UHA[T][X][S]
150
UHA[T][X][S]
175
UHA[T][X][S]
200
UHA[T][X][S]
225
UHA[T][X][S]
250
Orifice Quantity 7 8 9 10 11
Natural Gas (G20)
Orifice Marking 43 43 2.25 mm 2.25 mm 2.25 mm
P/N 91930043 91930043 91930225 91930225
91930225
Propane (G31)
Orifice Marking 1.35 mm 1.35 mm 54 54 54
P/N 91930135 91930135 91930054 91930054 91930054