Noritz N-0841MC Series Manual page 6

Procedure
(4) Locate ¼" drain pipe on right hand side
of unit and disconnect both small "C"
Clamps on top and bottom of pipe
(5) Disconnect Freeze prevention heater
on ¼" drain pipe
(6) Remove ¼" Drain Pipe and set aside
(7) Left Side: Disconnect "C" Clamp from
Copper Heat Exchanger (aka CU HE)
and Main Water Control Valve
(8) Pull out pipe
7. Remove Flue from Top of Unit
(1) Disconnect the venting from the unit
(2) Remove the 4 screws and pull the Flue
off of the unit and set aside
Diagram
Page 6