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VIKING 4G E, S
Rev. 1.0 (29.1.2020)
Installation
6.8.2. Extreme water conditions
When extreme water conditions not fulfi lling the requirements above exist, fi lters and water treatment
devices should be installed in order to ensure proper function of the unit and avoid corrosion. When
extreme water conditions are at hand, a water quality analysis must be carried out. Depending on the
results of the analysis, needed fi lters and water treatment devices are installed by the customer. The
most common fi lters and treatment equipment are:
1. Particle fi lter
A 5-15μm particle fi lter is recommended when water contains sand, iron particles or other suspended matters.
2. Active carbon fi lter
An active carbon fi lter must be used if the chlorine level exceeds 0,2 mg/l.
3. Reverse osmosis system
A reverse osmosis system must be used if the chloride concentration exceeds 60 mg/l. This is very cru-
cial in order to avoid corrosion.
4. Water softener
If a high level of scale build-up is experienced, a water softener is needed. H+ Ion Exchanger or Kleen-
steam are recommended systems. Sodium ion exchangers must not be used because of problems
caused by high salt content. A water softener is recommended when the water hardness exceeds 6 °
dH. Water hardness must not exceed 9 ° dH.
The optional twin water connection should be used if the water quality does not meet the above require-
ments and a water treatment appliance is used. The twin water connection reduces the consumption of
treated water because raw water can be used for cleaning purposes and for preparing the food.
NOTE!
Several water treatment equipment will lower the fl ow of water. If the kettle is connected to a water
treatment unit, care must be taken to ensure suffi cient fl ow after the water treatment unit. Particular at-
tention is needed when using a twin water connection. The branching of the water must always be done
before the water treatment unit.
6.8.3. Steam and condensate connections
The steam and condensate connections of the kettle must be carried out by a person with professional
competence in the fi eld. Improper connections and piping may severely impact the correct function of
the kettle.
The location of the steam and condensate connection points appears from the installation drawing.
The maximum steam pressure in the kettle is 1 bar. The steam supply line must be fi tted with a one-way
valve, a shut-off valve, a fi lter, a pressure reduction valve and a safety valve set at 1,5 bar.
The condensate pipe must be on the same fl oor as the kettle or go to the fl oor below. Leading the con-
densate pipe to the fl oor above the kettle is not allowed, as it creates a water trap that prevents normal
function of the kettle.
The condensate pipe must be free from pressure created by other appliances.
The temperature of the incoming steam must never exceed 130°C. If needed, the pressure has to be reduced
far enough away from the kettle to ensure that the temperature does not exceed the permissible value.
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