15
Fit the C0
2
non-return valve in the hose installation between the solenoid
valve and the C0
2
feed unit (for example a C0
2
diffusor). Pay attention to
the direction of flow, see the arrow on the housing.
Use only original EHEIM C0
2
-Safe Ø 4/6 mm hoses for the complete hose
installation. Unsuitable hoses may burst.
Keep the C0
2
hose between the pressure reducer and the solenoid valve as
short as possible as overpressure builds up with a closed solenoid valve.
On opening the solenoid valve the briefly increased volume of C0
2
in the
aquarium is reduced.
A
Connect the mains plug of the solenoid valve to the timer switch. The sole-
noid valve opens as soon as it is supplied with power and the addition of
C0
2
begins.
B
Connect the mains plug of the EHEIM p power supply unit to the
timer switch. Connect the plug connection of the EHEIM p lamp
and the plug connection of the solenoid valve using a Y-distributor and plug
it into the power supply unit of the powerLED. The solenoid valve opens as
soon as it is supplied with power and the addition of C0
2
begins.
C
Connect the EHEIM p power supply unit to the EHEIM LED
light controller. Connect the plug connection of the EHEIM p lamp
and the plug connection of the solenoid valve using a Y-distributor and plug
it into the EHEIM LED. As soon as the white LEDs of the EHEIM
p lamps reach a light intensity of more than approximately 30%
the solenoid valve is supplied with power and the addition of C0
2
begins.
Only increase the C0
2
supply gradually and spread over several days.
Apply the EHEIM C0
2
long-term test for the determination of the correct
amount of C0
2
.
7. Special Instructions
• In order to avoid noise through resonance transmission, do not install the C0
2
sole-
noid valve on thin underlays (for example, wood or plastic panels).
• Only operate the C0
2
solenoid valve together with a C0
2
pressure reducer which has
been designed especially for the supply of C0
2
to aquaria.
• In order to prevent corrosion, protect the C0
2
solenoid valve using a C0
2
non-return
valve. Non-return air valves for commercially available air diaphragm pumps are not
suitable as, due to the C0
2
, they begin to leak after a short operating period.
