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© STULZ GmbH – all rights reserved EN/06.2021/G23
minispace cw original instructions
6. Commissioning
noTICe
The A/C unit must be installed and connected in accordance with the chapter on „installation“
before initial commissioning.
If the water temperature passes under 5°C or if the outside temperature is less than 0°C, you must add an
anti-freezing agent. We recommend to add the following quantities of glycol (indicated as percentage of
weight of the water quantity):
Ethylene glycol
Water or outside air temperature
20%
until -9,0°C
25%
until -12,3°C
30%
until -16,1°C
35%
until -20,4°C
40%
until -25,2°C
45%
until -30,8°C
50%
until -37,6°C
Propylene glycol
Water or outside air temperature
25%
until -10,7°C
30%
until -14,0°C
35%
until -17,6°C
40%
until -21,5°C
45%
until -26,0°C
50%
until -32,4°C
6.1 Filling of the water circuit
• Check whether you need an anti-freezing agent.
It is difficult to produce a homogeneous glycol mixture. You can purchase ready-made glycol mixtures.
• calculate the water content of the water circuit and the required amount of glycol.
It is not necessary to supply the A/C unit with electricity to fill the water circuit.
DAnGer
Mortal danger by electric hazard
When filling the water circuit, water can leak out and reach places that are live.
Do not connect the power supply until the filling is complete. Secure the main switch against
being switched on again.
