Illinois residential appliance installer license prep class free download

come back and re-inspect after someone else has lighted the pilot What is your requirement as an ASHI inspector?ī. A house that you are inspection has an unlit pilot light.where the gas line meets the heating unit Where will you find a drip leg on a gas heating unit?ī.

What is the safety feature that shuts down the furnace?

A furnace has a pilot/thermocouple set up.

irregular flame pattern when the blower is on

A good sign the there is a crack or hole in the heat exchanger is:Ī.

along the lower section where the flames are

The most likely area to find a crack or hole in the heat exchanger is:ĭ.

precludes siphon action if the unit develops a leak is an equalizer that insures that pressures are equal above and below the water line in the equipmentĬ. automatically maintains the water levelī.

In a hydronic system, the normal operating pressure is:Ī.control when the fan comes on or off and shut off to the burners if the furnace overheats measure and control the air flow over the heat exchangerĭ. The function of a fan/limit switch is to:ī.heating ducts, hot air vent and plenum box return air, combustion air, and vent systemĭ. The three major components of a fossil fuel forced air furnace are:ī.In most cases chimney deterioration is caused by:.the new boiler operated at a higher pressure. the return water temperature is too cold.ĭ. the return water temperature is too hot.ī. The most difficult design problems on high-efficiency boilers is:Ī.Typical water pressure at a boiler at rest in a two-story house is:.fresh water can cause the pressure relief valve to leak. fresh water lowers the system efficiency.Į. fresh water lowers the system response time.ĭ. fresh water will cause system corrosion.Ĭ. it is a nuisance to refill in the fall.ī. Boiler water should not be drained in the summer because:Ī.prevents accumulation of on in the top of the radiator. reduces the pressure in the radiator to atmospheric pressure.ĭ. reduces boiler water pressure to plumbing pressure.Ĭ. reduces plumbing water pressure to boiler pressure.ī. Piping in boiler systems is rarely made from:Ī.All of the following are possible, except Natural gabs burners can have several different draft mechanisms.Off-cycle losses on a conventional gas-fired furnace waste:.The high limit setting for a forced air gas furnace is typically:.Which of the following is not a method of heat transfer?.Which of the following is not an automatic safety control?.

Illinois residential appliance installer license prep class free download