Noritz NH199-DV Manuel D'information De L'utilisateur page 18

Regular Maintenance-2
Equipment
Wipe the outside surface with a wet cloth, then dry the surface.
Use a neutral detergent to clean any stains.
Operation panel
Wipe the surface with a wet cloth.
Do not use benzene, oil or fatty detergents to clean the operation panel;
deformation may occur.
When Using Anti-Freeze
Check the anti-freeze at least once per year for proper product concentration and pH level.
Replace the anti-freeze once every 2 years or as required by the anti-freeze manufacturer with
blends specified by Noritz.
Not replacing the anti-freeze will cause rusting and freezing, resulting in damage to the device
and radiator.
For inspection or replacement of the anti-freeze, contact the installer or a qualified service
technician.
Repairs resulting from deterioration of the anti-freeze are not covered by the warranty.
Water Drain Valve (with Water Filter)
If the water drain valve (with water filter) is covered with debris, the hot water may not run smoothly,
or the unit may put out cold water. Check and clean the water drain valve.
For cleaning the water drain valve, contact your installer or a qualified service technician.
18
Periodic Maintenance