6
CLOSED END
BURNER (3)
BURNER RACK
SPARKER
FLAME
SENSOR
ORIFICE (3)
MANIFOLD
TWO-STAGE 90,000 BTUH TO 130,000 BTUH UNITS
PIPE PLUG
CLOSED END
GAS VALVE
LO
HI
OFF
ON
MHI
C
C
A08565
CLOSED END
BURNER (2)
BURNER RACK
SPARKER
GAS VALVE
ORIFICE (2)
FLAME SENSOR
MANIFOLD
40,000 BTUH UNITS
CLOSED END
PIPE PLUG
CLOSED END
BURNER (3)
BURNER RACK
SPARKER
FLAME
SENSOR
ORIFICE (3)
MANIFOLD
60,000 BTUH
PIPE PLUG
CLOSED END
GAS VALVE
LO
HI
OFF
ON
MHI
C
C
LO
HI
OFF
ON
MHI
C
C
TWO-STAGE
TWO-STAGE
UNITS
SNAP RING (3)
ORIENTATION
OF BURNER
INSERT
BURNER INSERT (3)
ORIENTATION
OF BURNER
INSERT
SNAP RING (2)
BURNER INSERT (2)
A08509
Fig. 7 -- Two--Stage Orifice Installation
CPL
P
CONV