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The only thing that happens in the heat exchanger is that the heat from the higher temperature space heating water is transferred to the lower temperature domestic water. Space-saving high-efficiency condensing boilers provide the ultimate heating and comfort experience. Navien offers the industrys most advanced condensing tankless water heaters, condensing boilers and the first combi-boilers strong enough to support whole house heating and hot water for larger homes. A combi (combination) boiler is designed to heat a building, using hot water (similar to a boiler), but also includes the components and controls to internally heat the domestic hot water (DHW) required in the application. When a domestic hot water demand (open faucet) occurs, water flows through a separate heat exchanger in the combi, and a valve inside the unit diverts heating water over to the DHW heat exchanger. As the leader in condensing technology, Navien has already reinvented the water heating industry with the award-winning NPE tankless water heaters. Click here to see downloads for other products. What type of vent does a tankless water heater use? Without proper ventilation, your heater can run inefficiently and risk fire or carbon monoxide poisoning. Navien NPE-240S Manuals | ManualsLib Note: Every manufacturer specifies the maximum lengths that you can run the venting. 65. Gas Code, ANSI Z223.1/NFPA 54 and/or CSA B149.1, Natural Gas and Propane Installation Code. Tankless water heaters can be vented in two ways: power-vent or direct-vent. Installation and service must be performed by a quali ed installer, service agency or the gas, The installation must conform with local codes or, in the absence of local codes, the National Fuel. If you are looking for tips on venting a water heater yourself, read on! Although tankless units are often referred to as "Instananeous", there are multiple factors that will affect how quickly the water will produce the required set temperature. Most tankless heaters have been tested and pass safety standards for installation in indoor or outdoor locations. Navien tankless water heaters & boilers for residential and commercial applications use innovative high efficiency technology to provide a comfortable environment. The subsections that follow describe some typical. 00 $20.74 $20.74. Can a tankless water heater be installed in a closet? Resources | Partners Login | Become an NSS |Certifications |Parts List | Technical Support | Careers |Global Network |Warranty, All contents copyright Navien Inc. | About Navien |Contact Us | Terms of Use |Privacy Policy |CCPA |Notices, You accept the use of cookies as described in our. Does the NPE-2 condensing tankless gas water heater have to be the first appliance off the gas meter? Built-in recirculation system. Condensing combi-boilers deliver high-efficiency endless hot water and space heating in one compact unit. If I call technical support, can they walk me through troubleshooting my unit? The NPE-2 series offers ultra-high efficiency up to 0.96 UEF to keep your utility bills low, endless hot water, and exclusive ComfortFlow technology with a built-in recirculation pump and buffer tank.