Direct Water Heater Meaning

Direct vent water heaters.

Direct water heater meaning. The most obvious difference between an indirect and tankless heater is the existence of a tank. Domestically water is traditionally heated in vessels known as water heaters kettles cauldrons pots or coppers. Exhaust gases are vented outdoors through a separate vent duct or through a separate chamber of the same pipe this requires a double wall vent duct. Since direct fired heaters have an exposed flame similar to a stove top or grill these units should be reserved for areas where there is plenty of ventilation and less foot traffic.

With a direct vent system air for combustion is drawn from a vent pipe that runs through an exterior wall or the roof. Water heating is a heat transfer process that uses an energy source to heat water above its initial temperature. When producing hot water with return boiler temperatures likely to be 60 c or higher the boiler is more likely to be. A water heater in which the source of heat gas oil or electricity is located at the water tank in contrast to an indirect water heater.

Generally direct fired heaters are used on construction sites outdoor applications or warehouses. Direct fired condensing water heater. An indirect fired calorifier. 96 taking the condensing boiler s gross seasonal efficiency.

Another type of water heater technology tankless water heaters as they are commonly known do the. Direct vent water heater when using a direct vent water heater water is heated by the heat of fuel combustion. Direct fired heaters applications. In industry hot water and water heated to steam have many uses.

A direct vent system typically results in lower water heating costs because the exhaust gases are vented vertically with no extra power required as is the case with the power vent water heater. 96 gross thermal efficiency. Example comparing efficiencies of direct and indirect fired hot water systems using the part l method. Indirect water heaters aren t the only type of water heater designed to operate on demand.

Typical domestic uses of hot water include cooking cleaning bathing and space heating. Find direct gas water heaters at lowe s today. Tankless water heaters can provide a certain number of gallons per minute based on their rating indefinitely. Conventional storage water heaters use a variety of fuels including natural gas propane fuel oil and electricity less conventional water heating technologies such as heat pump water.