ALNOR
®
ventilation systems
is a legally protected trademark and technical patent. All rights reserved.
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User Manual
HDE
1. Technical description
1.1 Purpose
HDE circular duct electric heaters are intended for installation in ventilation systems where it is necessary to
raise the temperature of supply air or to maintain it at a constant level. HDE circular duct electric heaters are
designed to be compatible with in line duct fans. HDE circular duct electric heaters may be used to heat the air
in shops, offices, houses, workshops, garages, warehouses or production halls, provided that the mentioned
rooms meet the installation requirements specified in this user manual.
1.2 Markings
The method of marking the HDE circular duct electric heaters is shown below:
HDE - d - n
HDE circular duct electric heater
heater diameter [mm]
coefficient of power
where
n = heating power/1000
1.3 Example markings
Example markings on the HDE circular duct electric heaters with 160 mm diameter and 2000W heating power
are shown below:
HDE-160-2,0
1.4 Construction
View of HDE circular duct electric heaters is shown in Figure 1 below.
Fig. 1. General view of HDE circular duct electric heaters
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