Rheem Guardian PowerVent Training Manual page 7

Guardian PowerVent Training Manual SVC900; Rev 1
Cold Water Inlet – Supply pipe that delivers cold water from the main supply to the water
heater.
Combustion Air Inlet Openings – Air pathway on the outer jacket with small holes. The holes
are designed to trap lint, dust and oil that would naturally accumulate inside the combustion
chamber. Aids in a cleaner main burner flame pattern.
Dip Tube – Non-metallic tube extending from the cold water inlet to a predetermined area of the
tank near the bottom of the tank that feeds water into the system. The length of the dip tube will
vary from product to product.
Drain Valve – Valve used to drain the hot water when performing periodic cleaning or replacing
a part.
Flue – Device that carries the combustion air from the combustion chamber and discharges it the
venting.
Flue Baffle – Device that retards air movement through the flue. Keeps the heated combustion
gases in the flue longer for maximum heat dispersion to the tank water.
Flame Arrestor Plate - Perforated metal plate inside the combustion chamber. If a flammable
vapor event occurs, this plate allows the vapors to burn (much like a candle) on the surface of the
plate. This prevents the ignition of flammable vapors outside the water heater.
Floor Shield – Metal plate between the arrestor plate and the tank bottom of the water heater.
This plate protects the flame arrestor from falling debris and prevents it from accumulating on
the arrestor plate.
Foam Insulation – Insulation between the steel tank and the outer jacket that helps prevent heat
loss to the ambient atmosphere.
Flammable Vapor Sensor – The sensor located just below the outer door to the combustion
chamber that continuously monitors for the presence of flammable vapors. This is a one time use
sensor.
Gas Control Valve – Integrated electronic control module and gas valve that takes the
unregulated main supply gas and regulates the gas for use by the water heater. Also contains the
electronic control module for the operation of the product. The control is responsive to flame
properties, sensing the presence or absence of flame, and in the event of ignition failure or unin-
tentional flame or flame extinguishments, forces the safety shutdown. The gas control valve also
contains the thermostat that controls the temperature of the water, the high limit safety switch
and the flammable vapor sensor controls.
High Limit (ECO) Switch – (Energy Cut Off) - Safety device located on the thermostat that
shunts all power to the control module if the temperature of the water in the tank becomes
excessive. The ECO will trip off at approximately 200 degrees Fahrenheit.
Hot Water Outlet – Supply pipe that delivers the hot water to the faucets.
Inner Tank – Steel tank with a porcelain enamel (glass) lining that stores the hot water.
Outer Jacket – Thin metal outer shell of the water heater.
Pilot / Igniter Assembly – The sparking device designed to ignite the pilot and main burner
when the thermostat demands heat. Sometimes referred to as the spark ignitor.
Pilot Supply Tube – Supply tube that carries the pilot gas to the pilot hood and ignitor.
Sight Glass – Glass window on the inner door allowing visual inspection of the combustion
chamber.
Shut off Plate – Combustion air inlet plate located on the bottom of the combustion chamber. It
allows combustion air into the chamber. When the thermal release device trips, this plate will
close and suffocate any flames inside the combustion chamber.
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