Rinnai RHFE-750ETR - Manual (Page 20)

20 Rinnai Corporation RHFE-750ETR
2. Assemble and Adjust the Sleeve Length
Measure wall thickness through previously drilled
3 1/2 inch (90 mm) hole.
The end of the sleeve should protrude 3/16 - 3/8
inch (5-10 mm) from the outside wall.
In the “A” vent kit there are 4 parts provided with
which to assemble the sleeve. Use the table to
determine which pieces to assemble.
In both the “A” and “B” vent kits, two parts are
threaded for additional adjustment.
Adjust the sleeve length to wall thickness plus
3/16 - 3/8 inch (5-10 mm).
Flue Manifold Installation
1. Disassemble the Flue Manifold
The flue consists of 3 parts:
• sleeve
• inside connection
• 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.
Drilling Flue and Gas Supply Holes
Check for water and gas pipes as well as electric
cables. Use the template supplied to mark the wall
locations for the flue manifold and the gas supply.
Drill the flue hole using a 3 1/2 inch (90 mm) drill. For weatherboard walls, drill through the center of the
weatherboard from the outside first and then through
the plasterboard.
Inside Connection
Sleeve
Terminal
Sleeve Parts
a b c
For wall thickness plus 3/16 - 3/8 in (5-10 mm) Assemble these parts (“A” Vent Kit)
4 1/3 - 6 1/8 in (110 - 155 mm)
6 1/8 - 7 3/4 in (155 - 195 mm)
7 3/4 - 9 1/2 in (195 - 240 mm)
a b +
a b c + +
a b c + + c +