REU-2532FFU Series 5 Rinnai
1. Introduction
The brand name Continuum refers to “Endless Hot Water”. The new Continuum series has been
developed in response to the growing changes in the lifestyle of our customers, and the increasing
diversification and sophistication of demand in the marketplace.
The Continuum series offers reduced cost with advanced safety features, and an option to connect one,
two, or three remote temperature control pads. Residential units can use up to three optional keypads,
commercial units only allow one keypad per heater.
The Continuum REU-2532 series is delivered with the maximum hot water temperature output set at
120 °F without the remote control. When using controllers you can adjust your hot water output from 96
– 120 °F using the “BC” and “BSC” controllers. The “MC” control will allow water temperature
adjustments from 96 – 140 °F, and the “MCC” control used with the commercial unit, allows
adjustments from 96 - 180°F. .
About the Continuum
The front cover of each appliance in the new series is formed from 0.6 mm coated steel. Secured to the
main box assembly by (4) screws. Seals around the front cover prevent water from entering the
appliance.
Combustion air is drawn from outside the building, and combustion by-products discharge outside the
building through a coaxial flue system. The general layout of components is shown on page 16. All
components are supported within the box formed from 0.8 mm coated steel.
The heat exchanger occupies the top section of the casing, and the burner is situated in a chamber
formed from 0.8 mm aluminized steel, attached to the bottom of the heat exchanger. The copper tubing
material used in the heat exchanger consist of, Phosphorus Dioxide Copper, (C1220P). The material
used to solder the heat exchanger pipes is, Phosphorus Bronze Brazing, (main components are P, Ag,
and Cu) (JIS No. BcuP-2). None of these materials contain lead.
The air for combustion is supplied by a fan, which is connected to the burner box by a duct at the left
side of the appliance, directly under the burner.
Gas and water controls are situated at the bottom right of the appliance, directly under the manifold. The
“O”ring material on the water and gas connections are made from EPDM, (Ethylene Propylene Diene)
rubber.
The burner assembly is made up of (16) identical stainless steel Bunsen burners, secured by an
aluminized steel framework. Each burner is capable of handling up to 11,250 BTU’s. An aluminum
manifold with (32) integrally molded injectors supplies gas to the burners, and is attached to the front
lower cover of the burner box.
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