© Danfoss A/S (Dept./Init.), 2014-05
VIILB102
3
Installation
The hot water heater should stand on a solid surface and be levelled with assistance from the setscrews underneath the
tank. The tank models that come without setscrews can be levelled with assistance of a shim. This must be done before the
tank is connected to the pipes and filled with water. Connections not in use must be plugged appropriately. During water
filling, condensed water may emerge on the outside of the tank. This will result in water underneath the tank, on the floor.
This will cease when the tank is heated. There must be a floor drain in the same room.
All connections (including those not used) must be insulated to minimize idle losses.
Commissioning
Start by filling the tank, then pressurize it. Continue to fill the radiator system (the enclosed water). The working pressure
may not exceed 10 bar (gauge), a safety valve with a releasing pressure of 10 bar must always be installed.
Maintenance
Check the safety valve annually by manually opening and closing the valve handle and making sure that water is released.
Check annually all connections for eventual leakage (also peripheral installations, i.e. a heat pump, etc).
Electrical Installation
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The electrical installation must be performed by an authorized installer and follow applicable norms and regulations.
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When selecting electrical equipment, it must be selected with approved materials and enclosure class.
Pipe installation
The water heater must be supplied with:
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A safety valve
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A shut-off valve
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A drain valve
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A non-return valve
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A mixing valve
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A pressure gauge
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A vacuum valve as per applicable standards.
The water heater must be supplied with the prescribed safety equipment according to applicable local and national regula-
tions. The overflow pipe from the safety valve must not be able to be shut-off and must run visibly above the floor drain.
