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The CO2 gas concentration is calculated as follows:
The following overview shows the required room volumes for common CO 2 cylinder sizes (calculated on
the basis of a CO 2 gas density of 2 kg/m³):
CO2 gas concentration in the room (vol. %)
CO2 cylinder
Content [m³] Content [l]
content [kg]
2
1
3
1.5
5
2.5
6
3
10
5
If the calculated gas concentration of 3 % is
exceeded, the following measures are possible:
•
Use of a smaller CO 2 gas cylinder
•
Increase in the size of the room (e.g. by
removing doors)
•
Installation of a CO 2 gas warning device in
accordance with DIN 6653–2
•
Installation of technical ventilation
Installing
Note!
A functional check of the gas pressure reducer
should be carried out before installing the CO 2
cylinder.
The CO 2 pressure should be set to approx. 1 bar
above the water pressure of approx. 2 bar, i.e.,
approx. 3 bar.
Functional check and connection
1
Check the gas pressure reducer for visible
external damage (1)
2
Screw the gas pressure reducer onto the CO 2
cylinder
3
Close the shut-off valve (2)
4
Open the pressurised gas cylinder valve and
close it again (3)
5
Check for leaks
6
Open the pressurised gas cylinder valve again (3)
7
Use the adjusting screw (4) to set the working
pressure to approx. 3 bar (5) – green mark
Gas volume or cylinder content (m )
=
Room volume required for
safety reasons [m³]
1000
35
1500
51
2500
85
3000
105
5000
170
4
Fig. 7: Connecting the pressurised CO 2 gas cylinder
8
Use the adjusting screw (4) to increase the pres-
sure to 7 bar – red marking (5)
9
Use the adjusting screw (4) to slowly increase
the pressure step by step until a slight blow-off
begins
10 Use the adjusting screw (4) to increase the pres-
sure further until the safety valve opens fully with
a loud noise. Observe the pressure gauge (5); this
should not exceed a value of approx. 7.7 bar
11 Close the pressurised gas cylinder valve (3) im-
mediately afterwards and turn the adjusting
screw (4) back to 0 bar to prevent icing
12 Open the pressurised gas cylinder valve (3) again
and set the correct working pressure of 3 bar (4)
13 Connect the hose to the gas pressure reducer (6)
14 Connect the hose to the CO 2 inlet of the water
dispenser
15 Open the shut-off valve (2)
Room volume (m )
Room surface area required for
safety reasons [m²]
(for a room height of 2.5 m)
1 5
1
EN
13.5
14.4
34
41
68
1 3
2
6
22
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