• STS 3 4 stainless steel heat exchanger
• Direct electronic ignition, automatic flame sensing
• Temperature controls includes remote thermostat that can precisely adjust the output temperature with the capability to display temperatures
• Outdoor reset control built-in customizable programming for energy savings and comfort with outdoor temperature sensor
• Durable steel casing with polyester coating
• 6 feet power cord installation kit
• Flame sensor, over heat cut-off limit switch, gas leak detector sensor, water leak detector sensor, exhaust temperature sensor, pressure sensor, heating supply temperature sensor
• Internal pump used as primary closed loop for heating mode and pre-heating of internal plate heat exchanger in domestic mode
• 3/4" gas pipe connection
• 15 - 15 psi operating pressure
• Pre-mixed metal fiber burner
• 1 years limited heat exchanger warranty for residential use and 5 years limited parts warranty

Noritz NRC711-DV-NG

Noritz NRC98-DV-LP

• Temperature controlled, continuous flow, gas hot water system
• Water flow sensor, electronic water control device and fixed by-pass
• Rinnai Circ-Logic - recirculation program cycles external pump
• Water temperature control - simulation feed forward and feedback
• Controller cable - non-polarized 2-core cable, minimum 22 AWG wire
• Safety devices: flame failure - flame rod, boiling protection, combustion fan RPM check, over current - glass fuse, remaining flame (OHS), thermal fuse, automatic frost protection
• Limited warranty - 12 years heat exchanger for residential, 10 years for residential and space heating, 5 years for commercial, 5 years all other parts, 1 year labor

• Temperature controlled, continuous flow, gas hot water system
• Water flow sensor, electronic water control device and fixed by-pass
• Rinnai Circ-Logic - recirculation program cycles external pump
• Water temperature control - simulation feed forward and feedback
• Controller cable - non-polarized 2-core cable, minimum 22 AWG wire
• Safety devices: flame failure - flame rod, boiling protection, combustion fan RPM check, over current - glass fuse, remaining flame (OHS), thermal fuse, automatic frost protection
• Limited warranty - 12 years heat exchanger for residential, 10 years for residential and space heating, 5 years for commercial, 5 years all other parts, 1 year labor

• Temperature controlled, continuous flow, gas hot water system
• 98 - 120 deg F (factory default) maximum temperature is selectable at 120 deg F or at 140 deg F , 98 - 185 deg F available with the MCC-91-2 controller for commercial and hydronic applications
• Isolation and pressure relief valves included - isolation valves are certified to NSF/ANSI 61 for potable water
• Water flow control - water flow sensor, electronic water control device and by-pass
• External recirculation pump control - Rinnai Circ-Logic included - recirculation program cycles external pump
• Water temperature control - simulation feed forward and feedback
• Controller cable - non-polarized 2-core cable, minimum 22 AWG
• Complies with south coast air quality management district 40 ng/J or 55 ppm NOx emission levels
• Minimum 8" WC, maximum 13.5" WC gas supply pressure
• High fire 4.7" WC, low fire 0.87" WC manifold gas pressure
• Safety devices - flame failure flame rod, boiling protection, combustion fan RPM check, over current glass fuse, remaining flame (OHS), thermal fuse, automatic frost protection
• Heat exchanger: 12 years for residential, 10 years for residential and space heating and 5 years for commercial, all other parts 5 years, labor 1 year warranty
• Forced combustion