Tankless Water Heater Wiring Requirements

Tankless water heater vent clearances if the unit is vented to the outside then it needs 12 inches of clearance from a door or window.

Tankless water heater wiring requirements.

Below we ve highlighted what size water heater you would need in our example of 6 5 gpm at a 63 f temperature rise. 1 x 40 amps dp. Tankless water heaters should not be installed near dryer vents or intake air vents. Many water heaters especially traditional electric ones require changes to your wiring and potentially the breaker box.

Wiring should be sized to maintain a voltage drop of less than 3 under load. If you need additional space in the panel for the circuit breaker then a quad circuit breaker may be. 4 x 40 amps dp. This model is also for a point of of use low flow sink faucet and can also be used for a solar water heater booster or a storage tank booster.

Once you have your total flow rate and the required temperature rise you can find the right size tankless water heater for your home. Simply locate the appropriate water heater sizes on ecomfort using your information. Beyond a water heater permit some areas may also require either an electric or plumbing permit depending on the type of water heater. Tankless water heaters also known as demand type on demand or instantaneous water heaters heat water directly without the need to store water.

Some codes require use of electrical sub panel for installation especially when heater is not mounted within line of sight of the main electrical panel. The unit then heats the water using either a gas burner or an. 2 x 40 amps dp. This unit is a 2 chamber model requires at least one 20 amp breaker requires at standard 120 volt electric outlet and requires a wire gauge size 12.

The specifications for each model are listed on this website. The above specifications are only guidelines. Tankless water heaters can be 8 14 more energy efficient for homes that use a lot of hot water around 86 gallons per day. Recommended minimum wire gauge.

Please consult your electrician for more details. 1 x 60 amps dp. 1 x 30 amps. A tankless heater has a flow sensing device that is activated whenever a hot water tap is opened.

If the window does not open the tankless water heater clearance from a window requires a 12 inch setback. Tempra series tankless water heaters are designed to use the same 208 240 volt current that your conventional electric tank type water heater uses however it will require a larger breaker and likely a heavier gauge of wiring. For homes that use 41 gallons or less of hot water daily demand water heaters can be 24 34 more energy efficient than conventional storage tank water heaters. How tankless water heaters work.