Ventless Gas Heaters

A gas heater, when first invented was based on the principle of burning fuel to produce energy. The ventless gas heaters used the same fundamentals of the Bunsen burner. The local air is heated initially by the flame, and the rest spreads by convection. Eventually, the whole room is heated uniformly.

Ventless gas heaters have been modified; and the modern gas heaters use radiant heat technology. Therefore, instead of spreading through convection, the heat is absorbed by objects that obstruct the heat waves. Therefore, ventless gas heaters are most suited for outdoor use. Also because they are not vented, there is a fair risk of dropping oxygen levels, if used indoors. Ventless gas heaters are cost effective on account of the fact that all the air around it is not heated, which otherwise would mean the dissipation of a lot of energy.

The main ingredients of ventless gas heaters are as follows:

There is a main gas line and a main gas supply valve in regular ventless gas heaters. The gas control valve further consists of a pilot knob and a pilot valve. This is connected to the pilot gas supply lines of ventless gas heaters. Then there is voltage input. Ventless gas heaters also have a main gas output. The working mechanism of ventless gas heaters consists of a Generator Assembly and a Pilot voltage Generator (Thermopile). Then there is the pilot Light Burner Assembly. Supplementing it are the insulated pilot voltage wirings (which are red and white wires in ventless gas heaters) and spark rod insulators (ceramic usually). There is a high tension wiring in ventless gas heaters with Piezo Spark Generator.

A Sensor is fixed with the heater to detect high limit temperature. There are thermostats and thermostat sensors in ventless gas heaters which are operated through switches. Finally, there is the Burner Output manifold. Some ventless gas heaters may or may not have a fireman connection but it is advisable to have it. It acts like a timer for automatic shut down. Although all ventless gas heaters do not have all of the above ingredients depending on their model and design, they mostly have certain features to improve performance and reduce cost.

The precision devices should never be reassembled by laymen as it may have dangerous and fatal consequences. They are absolute precision devices. Gas valves of ventless gas heaters must always be replaced as complete assembly.