Xylem EHR IM Electrical heater series EHR (obsolete) - Manual (Page 3)

1.) Contents of delivery
- Electrical heater unit
- Mounting brackets
- Installation and operating manual
2.) Application
3.) Design and function
The Laing electrical heater units of the EHR series are suited
to almost any application where water or a water/glycole
mixture need to be heated up, such as floor heating, wall
heating or radiator heating systems. The EHR series can fully
heat add-ons to existing buildings or individual rooms up to
approx. 400 sqft or it can be used to protect complete heating
systems from freezing. A further application is the heating of
domestic hot water storage tanks, although the limited heating
power has to be taken into consideration.
The electrical heater unit of the EHR series is a combination of
a circulator pump, an electrical heater and an integrated
constant temperature control with external control input. The
water for the heating loop is drawn into the lower port by the
pump, pumped alongside the heating element and exits the
unit at the top port. Since the very quiet spherical motor pump
is located below the heating element, the pump swivel extends
into the heater shell, resulting in a very good heat transfer. The
whole unit is built using non-corrosive material.
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