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5.3.2. Water
•
Water temperature must not exceed 43°C and 65°C in case of HW;
•
a minimum of 1.4 bar (dynamic pressure on injector) of water pressure is required for the
regeneration valve to operate effectively.
Mandatory
Do not exceed a maximum of 8.6 bar inlet pressure. Should this happen or be subject to
happen, it is necessary to install a pressure regulator upstream the system.
5.3.3. Electrical
There are no user-serviceable parts in the AC/DC transformer, motor, or controller. In the event of a
failure, these should be replaced.
•
All electrical connections must be completed according to local codes;
•
use only the power AC/DC transformer that is supplied;
Mandatory
The use of any other power transformer than the one supplied void the warranty of all
electronic parts of the valve.
•
the power outlet must be grounded;
•
to disconnect power, unplug the AC/DC transformer from its power source;
•
an uninterrupted current supply is required. Please make sure that the voltage supply is
compatible with the unit before installation;
•
make sure the controller power source is plugged in;
•
if the electrical cable is damaged, it must imperatively be replaced by qualified personnel.
5.3.4. Mechanical
•
Do not use petroleum-based lubricants such as vaseline, oils, or hydrocarbon-based lubricants.
Use only 100% silicone lubricants;
•
all plastic connections should be hand tightened. PTFE (plumber's tape) may be used on
connections that do not use an O-ring seal. Do not use pliers or pipe wrenches;
•
existing plumbing should be in a good shape and free from limescale. In case of doubt, it is
preferable to replace it;
•
all plumbing must be completed according to local codes and installed without tension or
bending stresses;
•
soldering near the drain line should be done before connecting the drain line to the valve.
Excessive heat will cause interior damage to the valve;
•
do not use lead-based solder for sweat solder connections;
•
the riser tube should be cut flush with the top of the tank. Slightly bevel the ridge in order to
avoid deterioration of the seal whilst fitting the valve;
•
the drain line must be a minimum of 12.7 mm (½") in diameter. Use 19 mm (¾") pipe if the
backwash flow rate is greater than 26.5 Lpm (7 gpm) or the pipe length is greater than
6 m (19 ft 8 in);
•
do not support the weight of the system on the valve fittings, plumbing, or the bypass;
Ref. MKT-IM-020 / B - 08.06.2018
Installer Manual Fleck 9000 - SXT - Installation
37 / 108
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