Reznor SCE Unit Installation Manual - Manual (Page 11)

Form RZ-NA I-SCE, Mfg #207697 Rev 7, Page 11
FIGURE 11 - Concentric
Adapter Box
Connections
• If using 6” diameter pipes ,
Model SCE always require a
6” to 5” (152 to 127 mm)
reducer in the vent pipe.
• If using 7” diameter pipes
(allowed on Sizes 200-400) ,
Model SCE always requires
a 7” to 5” (178 to 127 mm)
reducer in the vent pipe and
a 6” to 7” (152 to 178 mm)
enlarger for attaching the
combustion air pipe.
Horizontal, Option CC6,
instructions begin on page 12.
Vertical, Option CC2,
instructions begin on page 15.
Is the Separated
Combustion Vent/
Combustion Air
System Horizontal or
Vertical?
HORIZONTAL OR VERTICAL?
When pipe diameters differ, depending on direction of airflow, join the pipes with either a taper-
type reducer or enlarger. Refer to illustrations in FIGURE 11 for pipe connection requirements at
the concentric adapter box.
Do NOT make actual connections until after reading the instructions and length requirements for
installing the vent/combustion air kit. The connection requirements are the same for both verti-
cal and horizontal systems, but the length of the double-wall pipe will vary.
Pipe Connections at
the Concentric
Adapter Box