Maintenance And Operation; M Safe Operation Aintenance; Frost Damage - Winterwarm WWH-EC Instruction Manual

5 Maintenance and operation

Caution:
Make sure that you have turned off the power group that you are working on. The heater must be
earthed.
5.1 Maintenance
Especially in dusty spaces, it's important to clean the heater regularly. If the heat exchanger is heavily
covered by dust-traps it will not displace the heat sufficiently. Use a vacuum cleaner or compressed air.
Avoid damage to the fins. Clean also the fan and the fan grill
5.2 Safe operation
The heater is controlled by the room thermostat and/or the fan (speed) control. There are no controls on
the heater itself. Depending on the installation, the user can make following settings:
- Control main or isolation switch
- Turn up and down room thermostat
- Turn up and down contact thermostat
- Change fan speed with voltage regulator or externa;0-10V signal
Adjusting direction of the air outlet is normally no user's action, this is done by the installer.

5.3 Frost damage

ATTENTION: frost damage!
Do not set the room thermostat lower than 5°C. Freezing of the exchanger or the tubes will cause
irrevocable damage to the installation. A constant supply of hot water from the boiler must be ensured.
Frost damage is excluded from warranty claims!
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Instruction manual WWH-EC and WWH-LT Air heater