Rinnai Tankless Water Heater Flow Sensor Adjustment

This question requires identification by sight of a rinnai flow sensor or flow control assembly.

Rinnai tankless water heater flow sensor adjustment.

Rinnai tankless gas water heaters need a demand of at least 0 4 to 0 6 gallons per minute of water flow through the hot side to ignite and 0 26 gallons per minute to stay in operation. Generally most of the regular tank heaters come with a flow rate of 4 gpm to 8 gpm. Flow the six 6 step process to adjust your temperature. Misc 104 86 cad.

If you mix the water with a tap and attempt to get a temperature well below the temperature being controlled by the unit it may drop the flow below the desired minimum flow. Water flow in gpm affects temperature in that the greater demand for an amount of water will increase the heating operation to meet that demand. For your safety rinnai tankless water heaters come with a maximum temperature default setting of 120 to help prevent scalding. To keep the temperature of the outgoing hot water constant rinnai adjusts the water flow since the incoming water temperature changes from summer to winter.

So the higher the flow rate that you have with your heater the higher the quantity of hot water is what you can get. If the flow rate falls below these levels the energy efficient rinnai unit will turn off because it senses that hot water isn t needed. A if you adjusted the flow from the tap to lessen it you may have gone below the minimum flow required. But the meaning of j s199 and or j s199w is unknown.

The key to providing hot water at low flow rates with tankless water heaters is to match the combination of flow rate and temperature rise to fall within the range of the water heater s capacity. 107000090 rinnai 107000090 water flow servo sensor vc kb i e new part number rinnai 104000251 rinnai 104000251 kit water flow servo valve kb manufacturer. The rinnai water heater requires a minimum flow rate to operate. But when it comes to the rinnai tankless water heaters the flow rate is roughly around 6 5 gpm to 9 8 gpm depending on the available models.

However by following these simple steps you can increase the temperature to 140 if you choose. The other way is to have some amount of stored hot water generally called a tank that can be used to accomodate low flow rates as well as provide for some amount of peaking capacity which depends. Ru80i is a rinnai model number. He appeared to be interested and well informed.

They use a small computer so they can supply hot water as long as it is needed on demand and in continuous supply and at a preset temperature.