Rinnai EX22C (RHFE-559FTA), EX17C (RHFE-434FTA) installation manual Flue Manifold Installation

Flue Manifold Installation

•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.

•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.

•The termination cannot be vertical.

1.Disassemble the flue manifold The flue consists of 3 parts:

•	Inside Connection	Terminal
	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	Sleeve
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.Remove extension if necessary

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 outer plastic laminate (with a utility knife or similar) and remove the extension. The metal should not be cut.

3. Attach the sleeve
Attach to the inside wall using 3 screws	sleeve should
arranging the flange so that the marking
	extend 3/16 -
“TOP” is at the top.
	3/8 in (5-10 mm)
The flange is offset 2° to allow the
condensate drain to the outside.
3 screws

22 Rinnai Corporation EX17C / EX22C Manual