Gas Water Heater Exhaust Temperature

With a condensing tankless water heater you don t need metal venting.

Gas water heater exhaust temperature.

Natural gas fired heating appliance with draft hood. Gas fired heating appliance no draft hood. Orphaned water heaters vent into colder chimneys. It is reasonable to assume that higher in the flue temperatures are much lower.

The ulc s636 standard allows the material to exceed the limit for cpvc piping by 10 degrees fahrenheit. Non condensing tankless water heaters typically transfer to the water only about 80 percent of the heat they generate. Liquefied petroleum gas fired heating appliance with draft hood. C up to and including 110 c 230 f this temperature limit was intended to allow the use of polypropylene pp pipe for use as a flue gas material.

At the hottest point in a gas water heater flue the flue vent connector right above the heater top the temperature is not likely to rise above 350 degf. The temperature in the pipe manufacturer technical data is 180 f. Smith power vent gas water heaters are equipped with an electric blower fan that is installed on top of the water heater which requires an electrical outlet to be close to the water heater. Exhaust temperature o f o c chemical oxidation.

All water heaters that burn natural gas or liquid propane lp gas require a venting system. Because of the cold conditions inside the oversized chimney the water vapor condenses inside the chimney. The remaining heat creates a hot exhaust gas that requires metal venting typically stainless steel or thick aluminum. On the other hand the epa suggests turning the thermostat down to 120 to reduce power consumption and a booster heater to reach sanitizing temperatures at select outlets.

Water heaters are factory set at osha recommended levels around 140 degrees. The process of burning of the gas is called combustion and it creates heat exhaust gases including highly poisonous carbon monoxide and moisture the water heater s ventilation system removes these byproducts from the home making it a critical safety feature. The exhaust from the combustion of natural gas contains massive amounts of water vapor. Soon it is raining inside your chimney.

The function of these fins on the gas water heater flue vent connector is to try to increase the transfer of heat from the water heater exhaust into the surrounding area maybe to make it warmer in a fantasy that we re cutting heating cost by exracting heat perhaps in hope of preventing frozen pipes nearby.