Filter
Top Products
Rinnai Corporation ES38 Manual 21
Flue Manifold Installation
1. Disassemble the flue manifold
The flue consists of 3 parts:
• sleeve
• inside connection
• outside terminal
Disassemble the flue manifold by first pulling
out the inside connection. To remove the
outer terminal pull and release the two
internal ties and then pull out the outer
terminal.
Clearance to combustibles for the sleeve and
flanges is zero inches.
2. Adjust the sleeve length
Measure wall thickness through previously
drilled 3 1/8 inch (80 mm) hole.
The end of the sleeve should protrude 3/16 -
3/8 inch (5-10 mm) from the outside wall.
The sleeve is threaded for adjustment. Adjust
the sleeve length to wall thickness plus 3/16 -
3/8 inch (5-10 mm).
NOTE: Do not extend beyond the red line.
For other than the “S” type flue manifold, if a
shorter length is necessary an extension can
be removed. Cut the plastic and remove the
extension.
• The flue manifold must exhaust to the outside. Do
not exhaust into other rooms.
• The flue manifold is not designed to be positioned
under floors or below the heater.
• The termination cannot be vertical.
• This appliance can only be used with one of the
five types of Rinnai flue kits. The flue kits and their
dimensions are listed on the previous page.
• Refer to the Flue Terminal Clearances section.
3 screws
sleeve should extend
3/16 - 3/8 in (5-10 mm)
3. Attach the sleeve
Attach to the inside wall using 3 screws
arranging the flange so that the marking
“TOP” is at the top.
The flange is offset 2° to allow the
condensate drain to the outside.
Inside Connection
Sleeve
Terminal
Remove extension
if necessary