Can you vent tankless water heater through chimney?

The tankless heater cannot share vent piping with any other appliance, and it cannot use a masonry chimney flue for venting. Special stainless steel pipe. The vent pipe must be made of stainless steel designed for venting corrosive gases.

Can you vent a hot water heater into a chimney?

When venting a gas water heater to a chimney, be aware that holes in the chimney can prevent a good draw on the water heater, causing downdrafts and presenting the risk of carbon monoxide poisoning. To avert this problem, you can vent the water heater to the largest hole in the chimney and cap the remaining holes.

What are the venting requirements for a tankless water heater?

Facts about Tankless Water Heater Venting

• Gas tankless water heaters don’t have to use indoor air for combustion.
• Tankless water heaters don’t always need two ventilation pipes, even for direct-vent units.
• Tankless water heater venting through roof is not necessary.
• Outdoor tankless water heaters don’t need venting.

Can tankless water heaters vent vertically?

On the other hand, tankless hot water heaters can use fans to blow the exhaust air vertically, or horizontally, depending on the buyer’s preferences. This is because they use a combustion fan that can actually blow the hot exhaust air in any direction.

How far can you vent a tankless water heater?

A tankless water heater requires a 4-foot clearance from the side or below a door or window that opens, unless the unit is directly vented to the outside. If the water heater is installed above the door or window, it needs 12 inches of clearance.

Do you need a chimney liner for hot water heater?

For optimal use and safety, a liner is needed when installing a new heating system, furnace, boiler, or water heater. Local codes and the International Fuel Gas Code require proper venting and chimney liners for flue gasses to be vented into the outdoor atmosphere.

Does a tankless water heater need an intake vent?

Indoor gas tankless water heaters need to be vented. All indoor models have an exhaust vent. Indoor models also need a fresh air intake either from a direct vent or a power vent.

Can you use PVC to vent a tankless water heater?

In most cases, PVC makes a great venting material. It’s the least expensive option and is easy to install. And it’s a good reason to consider a high-efficiency condensing unit.

How high off the ground should a tankless water heater be?

18″
NOTE: It is recommended to install the bottom of the unit at least 18″ off the ground to minimize blockage and maintenance from debris and provide room for the optional Pipe Cover Accessory Model Number AGTPCM.

Can a direct vent water heater be vented horizontally?

Compared to atmospheric, direct-vent water heaters offer more installation flexibility because they can vent horizontally.

What happens if you don’t vent a water heater?

That is, the average water heater still burns fuel—be it natural gas, oil, or propane—and that fuel burning releases byproducts like carbon monoxide. Without proper ventilation of the noxious gases created by combustion, modern water heating would be a dangerous proposition.

How far can you run a vent for a tankless water heater?

What is concentric vent for tankless water heater?

Concentric Vent It can provide an aesthetic installation with a single wall or roof penetration. Concentric venting may be used with several types of water heaters, including direct vent, power direct vent, and tankless water heaters.

Can I use ABS pipe for tankless water heater?

The purpose of this technical bulletin is to clarify that ABS schedule 40 pipe is approved for use on the combustion air intake pipe and fittings for Rinnai Condensing Tankless Water heaters.