General; Device Description - A.O. Smith DRE 52 Installation And User Instructions Manual

1. GENERAL

1.1

Device Description

The structure and equipment for this
electrical heating device are in accordance
with the European standard for electrical
household devices (EN 60335-1:2002
+ A11:2004 + A1:2004 + A12:2006
+ A2:2006 en EN 60335-2-21:2003
+ A1:2005) The device thus meets
the European Directive for Electrical
Household Devices and has the right to
bear a CE mark.
The device is suitable to be used with
an operating pressure of up to 8 bar
(= 800 kPa). The tank is made of steel
plate, which has a glass lined coating
4
on the inside. The tank is also provided
with two sacrificial anodes to give extra
protection against corrosion. A thick CFC
free polyurethane insulation layer, covered
with a steel casing, prevents unnecessary
heat loss. The device is fully filled with
water and continually starts under water
pipe pressure. When hot water is drawn off
from the device, it is immediately topped
up with cold. Incoloy heating elements are
used for good transfer of heat.
To create extra comfort in case of long
pipelines, circulating piping with a
circulating pump may be connected to
the piping. The circulating pipeline can be
connected to the cold-water supply.