BWT AQA drink Pro 20 Instructions De Montage Et De Service page 17

The CO gas concentration is calculated as follows:
2
The following overview shows the required room volumes for common CO
lated on the basis of a CO
CO gas concentration in the room (vol.%) =
2
CO cylinder
2 Content Content
content
(m ) (l)
3
(kg)
2 1 1,000
3 1.5 1,500
5 2.5 2,500
6 3 3,000
10 5 5,000
If the calculated gas concentration of 3% is exceeded, the following measures are possible:
» Use of a smaller CO gas cylinder
2
» Increase in the size of the room (e. g. by removing doors)
» Installation of a CO gas warning device in accordance with DIN 6653–2
2
» Installation of technical ventilation
INSTALLING
Note!
A functional check of the gas pressure reducer should be carried out before installing the CO
cylinder.
The CO pressure should be set at 3.5 bar. Depending on personal taste this can be set up to
2
4 bar. The higher the pressure the more sparkling the water.
EN
32
cylinder sizes (calcu-
2
gas density of 2 kg/m³):
2
Gas volume or cylinder content (m³)
Room volume (m³)
Room surface area required for
Room volume required
safety reasons (m²)
for safety reasons (m³)
(for a room height of 2.5 m)
35 13.5
51 14.4
85 34
105 41
170 68
Functional check and connection
1. Check the gas pressure reducer for visible external damage (1).
2. Screw the gas pressure reducer onto the CO
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 (3).
7. Use the adjusting screw (4) to set the working pressure to approx. 3.5 bar (5) – green mark.
8. Use the adjusting screw (4) to increase the pressure 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 pressure 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) immediately afterwards and turn the
adjusting screw (4) back to 0 bar to pre-
vent icing.
12. Open the pressurised gas cylinder valve (3)
again and set the correct working pressure
of 3.5 bar (4).
13. Connect the hose to the gas pressure
reducer (6).
14. Connect the hose to the CO
water dispenser.
15. Open the shut-off valve (2).
2
Caution!
Only open the CO gas cylinder a quarter of a turn (opening the valve completely has no influ-
2
ence on the amount of CO
Connect the CO gas cylinder as shown in fig. 11.
2
3 2
4
Fig. 11: Connecting the CO
cylinder.
2
5
1
4
inlet of the
2
Fig. 10: Connecting the pressurised CO
cylinder
in the water).
2
1
1. CO connection (CO
2
2. Hose
3. Hand wheel for regulating the pressure
4. CO gas cylinder
2
gas cylinder
2
3
2
6
gas
2
EN
INLET)
2
33