Rinnai RUC80i Training Program page 26

Heat Exchanger Assembly Removal
1. Remove single screw from bracket securing pipe to the hot water outlet.
2. Remove (2) screws from the brackets securing the two pipes to the bypass valve assembly.
➢ Rotate and remove brackets then release the copper pipes by pulling the pipes straight out from the
fittings.
3. Compress pinch clamp securing the condensate drain hose to the bottom of the secondary heat exchanger
and pull the hose down and off.
4. Remove the (2) screws from the bracket securing the gas pipe to the gas valve (at the bottom) and the
single screw from the bracket securing gas pipe to the manifold (at the top) , release the brackets and
remove the pipe.
5. Remove the black heat exchanger drain nipple (threaded) then the (2) screws securing the drain fitting to
the bottom of the water heater cabinet.
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© 2016 Rinnai America Corporation
PROPRIETARY and CONFIDENTIAL
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Enhancing Lives By Changing The Way Water Is Heated
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5/4/2018