Table of Contents
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1 General
This user's guide is meant for the installer and if necessary for the user. It's a reference to operation and
installation of the WWH-EC and WWHLT. For a safe and effective function of this appliance it is strictly
necessary that this manual is applied correctly.
1.1 Description
The WWH is an effective in-direct fired heater.
The heat exchanger consists of copper tubes and aluminium fins. This is an approved design for an
optimal heat exchange.
The grill has been designed to accomplish an optimal air displacement at the lowest possible sound level.
With a (stepless) regulator or external voltage source is it possible to reduce the air output and noise
level.
1.2 Function
The WWH is in fact a radiator with a fan on the back. When hot water is pumped through the radiator, and
the fan is on, the heater will blow hot air. The heater will give no heat when the fan is off, no matter there
is hot water running through the radiator or not.
The heater requires a control (thermostat) to arrange the supply of hot water and to switch the fan on/off.
There are several options for control, this will be described later in this manual.
For a better air distribution it's always better to choose 2 or more heaters instead of 1 heater. For
example, it's better to select two 30kW heaters, instead of one 60kW heater.
1.3 Matching capacity hot water boiler and WWH
In case the capacity of the boiler is higher than that of the WWH, the boiler won't be able to release all
the heat produced. This will cause the boiler to go on and off (commute). As a consequence of this the
installation won't be able to reach the temperature demanded. For small installations it is advisable to
select a WWH which has an higher output than the boiler itself.
1.4
Guarantee
Operation and /or installation of appliances not according to this manual can imply invalidation of
guarantee.
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Instruction manual WWH-EC and WWH-LT Air heater
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