Power vented heaters require more air for gas combustion, so they cannot be placed in small rooms. Yes, the NPE-2 has built in display and control allowing for simple and easy operation. Connect the electrical lines to the water heater. If your local codes allow, PVC pipes can also be used for venting a tankless heater. Use a licensed electrician to run the needed electric lines to the unit and connect them. Safety Information The following safety symbols are used in this manual. By having both heating and hot water in one unit, the combi will save space in the mechanical room and also save on the initial installation compared to separate appliances. The issue is most likely the flow sensor inside the unit is not spinning properly. We and our partners use cookies to Store and/or access information on a device. CSA exceeds the UL standards with specialization with gas fired equipment (UL does not). Navien Now Doing Business in Canada as Navien Canada, Inc. Navien Begins Shipping PeakFlowC Commercial Scale Prevention Systems, Backed by the industrys strongest warranty10 years on heat exchangers, Takes less space than floor standing boiler and tank water heater, Can be cascaded with Navien NPE-2 tankless water heaters for increased DHW flow demand, Ideal for replacements or new construction, Optional NaviLink WiFi remote control system, Optional NaviClean magnetic filtration system. Protect your water supply and your water heating equipment with eco-friendly water treatment solutions. When you compare to the standard vent installation of the tank-type water heaters, tankless brings more flexibility and is cheaper, especially with the sidewall installation when remodeling the house. Once the tankless water heater detects flow and begins to heat water, the unit will provide continuous hot water at the desired set temperature until the flow through the fixture (and the unit) stops. If the unit detects an issue, it will shut down and display an error code on the front display. In heating mode, water from the space heating system will flow through the heat exchanger and out to the system similar to a standard boiler. Tankless water heaters can save you money on your energy bill, and they can also have a longer lifespan than traditional water heaters. Since the combi boiler provides both space heating and domestic hot water all in one unit, it can provide space savings over two or more units. This guide walks you through installing vent pipes for your water heater to make sure that it will work safely and efficiently. So a well maintained boiler in a properly designed and installed system could be expected to last up to 20 years or longer in some cases. They are called tankless, since there is no large tank of water that is continuously heated 24/7 when there may be no demand. In general, US codes permit Category IV gas-fired appliances to be vented using unlisted plastic vents where such vents are tested and covered under the specific appliance listing. Learn more about our products for home owners. Approved vent materials are PVC Schedule 40, CPVC Schedule 80, Approved Polypropylene, and stainless steel. A power-vent model comprises an exhaust fan and only one pipe, which is exhaust, while a direct-vent model has two, one for air intake and the other for exhaust. The NPE-2 is approved for use in residential, commercial, and heating (combination only) applications. 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. As the unit releases energy to heat water, it also generates exhaust gases. Since tankless units will control the amount of flow to maintain a consistent outlet temperature, they need to be able to provide enough flow for the highest demand the job requires. 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. Contact a licensed professional for the affected system (for example, a plumber or electrician). Navien's NPE-240A2 condensing tankless water heater for commercial & apartment browse application high-efficiency technology to provide boundless hot water. The result is a reduction in energy consumption, lower CO2 emissions and low exhaust temperatures allowing the use of less expensive venting materials such as Schedule 40 PVC. Navien Now Doing Business in Canada as Navien Canada, Inc. Navien Begins Shipping PeakFlowC Commercial Scale Prevention Systems. . Navien Now Doing Business in Canada as Navien Canada, Inc. Navien Begins Shipping PeakFlowC Commercial Scale Prevention Systems. The vent will exit the tankless unit vertically, then turn using a ninety-degree elbow and then straight, pointing downward (1/4" per foot) and outside. Do not touch any electrical switch; do not use any phone in your building. A direct vent takes in air from outside the house and gets rid of the exhaust gases. * The wetted surface of this product contacted by consumable water contains less than one . Tankless Water Heater | Plumbing code installation Second, you'd have to follow all local codes or, if local codes are absent, follow the National Fuel Gas Code: ANSI Z223.1/NFPA 54. English. The boiler control will operate to maintain the outgoing water at the temperature required for the application. Note: Every manufacturer specifies the maximum lengths that you can run the venting. Allow at least a inch downward sloping of the exhaust pipe to the water heater. Exhaust Vent Piping Materials. P: 949-420-0420 x132. Also, it uses simple 2-inch or 3-inch PVC forced draft direct venting up to 60 feet. 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. But, if your heater is installed in a room with high ceilings, the exhaust has to travel a longer distance, reducing the heaters performance. Avoid using longer than recommended vents and an oversized vent pipe. Power-vent water heaters use indoor air for gas combustion, while direct-vent utilize outside air. Services LLC Associates Program, an affiliate advertising program designed to Navien's venting for their NPN universal indoor unit - YouTube When applicable, the installation must conform with the Manufactured Home Construction and. A separate stainless steel flat plate heat exchanger for DHW creates one of the highest flow rates for any combiboiler in the industry. Keep the vents length short and avoid using a large vent pipe. However, many tankless heaters come with an electric blower fan that reduces the heat of the exhaust gas that goes through the vent, so venting with PVC shouldnt be an issue. Tankless Water Heater Buyer's Guide: What You Need to Know The cooler water then returns to the boiler to be reheated. reservedhome-water-heater.com is a participant in the Amazon This exhaust pipe can become very hot, so you cannot be more flexible with the units placement. Space heating water is used to heat the domestic hot water until the demand ends. NFC-H high-efficiency condensing fire tube combi-boiler series offers the highest heating and DHW performance ever built into one compact combi-boiler. What does high efficiency mean for tankless water heaters? For venting a tankless heater you will need basic plumbing tools like wrenches, pliers, and screwdrivers. Installing a Navien tankless water heater is best done by a licensed plumbing contractor professional because it involves disconnecting and reconnecting gas lines. Is it normal to smell gas from a tankless water heater? It can be the deciding factor for many consumers when shopping for a tankless water heater. The coaxial type consists of an insulated intake pipe with 5 and 4 inches in diameter and exhaust pipes with 2 and 3 inches, which enable the vent to remain cold to the touch, therefore, preventing the risk of burn injuries. IF you set the water heater at a temperature higher than 160F (70C) AND are running an external recirculation loop or a combination heating system, you MUST use the Navien stainless steel venting or any 3" venting system approved for use with Category IV appliances (typically Type BH Special Gas Vent approved to UL1738-S636.)