Noritz NRCB180DV-LP Condensing Gas Combi Boiler, 180,000 BTU, Propane

A wall-mounted residential condensing combination boiler from Noritz that supplies space heating and domestic hot water at the same time. This propane model modulates from 18,000 to 180,000 BTU/h, and because both loads run together, a shower does not pull down the room temperature.

Primary and secondary heat exchangers are 316L stainless steel for strong corrosion resistance and long life, and a third flat-plate exchanger for domestic water is stainless as well. The fully modulating burner emits 14 ppm NOx, below the 20 ppm limit set by the South Coast Air Quality Management District. Heating mode runs from 18,000 to 100,000 BTU/h, overall turndown is 5.6, and domestic flow ranges from 0.4 to 9.8 GPM. AFUE is 95%.

The unit is for indoor installation only and can be converted to single vent with kit SV-CK-2. A remote thermostat sets domestic water from 90 to 140 F and heating water from 80 to 180 F and can display Celsius; an outdoor temperature sensor and a 6 ft power cord kit are included. An internal pump serves the primary loop. Safety devices include a flame rod, high-limit switch, ZNR lightning protection, freeze prevention and fan rotation detection.

Highlights

• Simultaneous space heating and domestic hot water

• Input 18,000 to 180,000 BTU/h; 95% AFUE; 5.6 turndown

• Domestic flow from 0.4 to 9.8 GPM

• 316L stainless primary and secondary heat exchangers

• 14 ppm NOx, under the 20 ppm SCAQMD limit

• Remote thermostat, outdoor sensor and 6 ft power cord kit included

Specifications

In the box

• Remote thermostat

• Outdoor temperature sensor

• 6 ft power cord installation kit

Good to know

• Gas-fired appliance: it must be installed, vented and commissioned by a qualified installer in line with local codes and the manufacturer's installation manual.