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Installation and operating instruction
Hydraulic unit WWP LS 8 ... 16-B
5 Installation
83306902 2/2017-05 La
25-88
Filling with water
CAUTION
Damage to the unit due to unsuitable fill water
Corrosion and scale could damage the system.
Adhere to the requirements for the heating water and the local directives
[ch. 5.1].
Check design and inlet pressure of the expansion vessel and adjust if necessary
[ch. 12.1].
For defrosting, a water quantity of at least 60 litres must be present in the heating
circuit.
System pressure = flow pr 0.5 bar.
Open shut off devices.
Undo cap on quick action vent valve.
Gradually fill the heating system using the inlet tap whilst observing the system
pressure.
Vent the system.
Check soundness and system pressure.
5.3 Refrigerant pipework
Connect refrigerant pipework, see installation and operating manual of outdoor unit.