Rinnai RHFE-750ETRA Owner's Operation & Installation Manual page 26

Connections
9. Remove clamp L and slide the vertical pipe M
down into the lower elbow N to remove parts J
and K. Separate J and K.
10. Attach pipe J to the flue manifold (or the adapter
or the 2 inch elbow for extended venting) with
clamp and screw.
11. Push the air intake line onto the flue manifold or
adapter and secure with the plastic cable tie.
Make sure the hose does not kink.
Clamp
Pipe J
12. Carefully slide the appliance into the enclosure
lining up the gas supply and exhaust pipe. Fit
elbow K to pipe J making sure that the clip in
elbow K goes beyond the groove in the pipe. The
gas supply flexible hose is designed to coil inside
the appliance as it is pushed into the enclosure.
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K
J
N
Tie
Air Intake Line
Rinnai Corporation RHFE-750ETRA
13. Slide tube M up into elbow K and clamp together
with clamp L.
14. Slide the flue access panel back into position and
attach with two screws. This panel may be
turned upside down to allow for a different flue
pipe height.
L
15. Open both of the air return louvers on both sides.
Secure the appliance using the four mounting
points.
M
4 mounting points