Water; Electrical; Mechanical - Pentair FLECK 3150 NXT Installer Manual

Installer Manual Fleck 3150 - NXT - Installation
• follow state and local codes for water testing. Do not use water that is micro-biologically unsafe
or of unknown quality;
• when filling the media tank, first place the valve in the backwash position, then partly open the
valve. Fill the tank slowly to prevent media from exiting the tank;
• when installing the water connection (bypass or manifold), first connect to the plumbing system.
Allow heated parts to cool and cemented parts to set before installing any plastic parts. Do not
get primer or solvent on O-rings, nuts, or the valve.

5.3.2. Water

• Water temperature must not exceed 43°C for standard version, 65°C for volumetric hot water
version and 82°C for time clock hot water version;
• a minimum of 1.8 bar of water pressure is required for the regeneration valve to operate
effectively.
Mandatory
Do not exceed a maximum of 8.6 bar inlet pressure. In such cases, it is necessary to install
a pressure regulator upstream the system.

5.3.3. Electrical

There are no user-serviceable parts in the AC 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 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 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 is imperative that it is replaced by a 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;
36 / 122 Ref. MKT-IM-010 / B - 28.05.2018