Instruction manual
WWH Heater
Pag. 2
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 heater.
1.1. Description
The WWH is an effective in-direct fired heater.
The heat exchanger consist 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 5-stage switch 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.
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.
1.1
Guarantee
Operation and /or installation of appliances not according to this manual can imply invalidation of guarantee.
2 Technical features
2.1 Table with data
The WWH is available in 8 models with capacities that differ from 10 to 80 kW. The range of 10-80 kW heaters is
subdivided in 3 basic sizes. The type number of the appliance starts with the housing model (1,2 and 3). See
table below for exact measurements.
