The Heat Exchanger needs to be flushed to prevent damage from Scale Build-up. Isolation Valves allow for full diagnostic testing and easy flushing of the system. Please refer to the Owners Guide or Installation Manual for more information regarding this procedure.

• Easy to install
• Copper material
• Compatible with:NR501 series NR662 series NR83 series NR981 series NRC661 series NRC711 series NRC98 series NRC1111 series NRC663 series NC380 series (F only)
• Will give the install a nice and clean finished look
• 3/4 in.
• Sweat ISO valves
• Hot water valve included
• Cold water valve included
• Installation manual inside box
• 500,000 BTu/hr pressure relive valve

Noritz External Recirculation Pump Kit. Pump comes pre-assembled with a wiring harness to be easily connected into the water heater. The recirculation system can be programmed with included Commercial Remote (RC-9018M).

• Recirculation pump and commercial remote come pre-assembled
• Recirculation system can be programmed with included commercial remote
• 3-speed pump (low, medium, and high settings) to dial in for enhanced performance
• Only compatible with Noritz model heaters (NG or LP).
• Max flow rate of 25 GPM and 10.08 ft. head max
• RPK-EXT are compatible with outdoor models, but pump kit must be installed indoors