Components & Their Function - Rheem 52S160 Service Instructions Manual

Components & their Function
Temperature and Pressure Relief Valve (T&PR) - A valve designed to provide automatic
relief by discharging water in case of excessive temperature, pressure or both.
Never fit a T&PR Valve with a pressure rating greater than that indicated on
the product-rating label.
Outlet Delivery Tube (Dip Tube) - A plastic tube installed in the hot water outlet of the
water heater cylinder to conduct water from the highest point to the outlet connection. It
also acts as a fitting liner.
Inlet Delivery Tube (Dip Tube) - A plastic tube installed in the cold water inlet of the water
heater to ensure incoming cold water is delivered to the lowest part of the cylinder and that
water from the lowest point of the cylinder is returned to the collectors.
Diffuser - A plastic tube inserted in the solar flow connection of the cylinder to distribute
the solar heated water evenly into the tank. The diffuser also acts as a fitting liner to
prevent corrosion of the cylinder.
Cold Pipe (Solar Return) - The long pipe connecting the solar collectors to the storage
water heater through which, the cooler water returns from the storage tank to the
collectors.
Hot Pipe (Solar Flow) - The short pipe connecting the solar collectors to the storage tank
through which, the solar heated water flows back to the storage tank from the collectors.
Sunstat Valve - A temperature limiting device fitted between the cold pipe and the storage
cylinder to stop the flow of water from the collectors to the storage tank when the water
temperature reaches approximately 75ºC. This device prevents the likelihood of extremely
hot water being delivered at hot taps and other outlets at uncontrolled water temperatures
near boiling point. It also prevents premature operation of the T&PR valve and the
electrical energy cut out (ECO) and aids in extending the life of the system.
Anode (Sacrificial) - A metal alloy electrode installed in the water heater cylinder that by
galvanic action protects the cylinder from corrosion.
Thermostat (Electric) - A device, sensitive to temperature, which controls the supply of
electrical energy to the heating unit to maintain the heated water at the required
temperature.
Over-temperature Cut Out (ECO) - A temperature-sensing device in combination with the
thermostat that automatically cuts off the energy supply to prevent excessive water
temperature occurring. This device will not reset automatically, however it can be manually
reset after temperatures have fallen to a safe level. CHECK CAUSE OF OPERATION.
Heating Unit (Element) - A tubular device containing an electric resistance element that
converts electrical energy to heat. Standard ratings are 2.4, 3.6 and 4.8kW.
TM005 Rheem Solar Hiline Service Instructions REV D
D.O.I 20/02/2009
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