User Manual
2
READ Instructions Before Using
• After reading these instructions completely, obtain all the 
materials and tools needed for installation.
 NOTE: Failure to install the system correctly voids the warranty.
• Perform installation according to state, province and local 
plumbing codes.
     Use only lead-free solder and flux for sweat-solder connec-
tions, as required by state, province and federal codes.
•  Handle all components of the system with care. Do not drop, 
drag or turn components upside down.
• Be sure the oor under the water lter system is clean, level 
and strong enough to support the unit.
• The system uses 24 volt-60Hz electrical power. Always use 
the transformer supplied.
    Plug transformer into an indoor 120 VAC, grounded outlet.
     Properly ground the system to conform with all codes and 
ordinances.
• Install the system in a protected area. Be sure electric outlet 
and transformer do not come in contact with water. For more 
information on where to install the lter see the Installation 
Considerations section of this manual.
     Do not attempt to treat water over 110°F (43°C) with the 
system. Always connect the system to the main water sup-
ply pipe before the water heater.
     Do not expose the system to freezing temperatures. Water 
freezing in the system causes equipment damage.
     Do not install in direct sunlight. Ultraviolet rays from the sun 
may cause damage.
• Minimum inlet water pressure is 30psi. Maximum inlet water 
pressure is 125psi. Use a pressure reducing valve if necessary.
!
Caution: Read and follow the information in this 
manual to minimize the risk of electric shock or per-
sonal injury.
Important: If you are unsure about installing your Watts 
water lter, contact a Watts representative or consult a 
professional plumber.
Important: This system must be installed in compli-
ance with applicable state province and local codes, 
law, and regulations.
!
Caution: 
  •   Do not use with water that is microbiologically 
unsafe or of unknown quality.
  •   Test the water periodically to verify that the  
system is performing satisfactorily.
  •   Discard small parts remaining after the installation.
Important Safety Information –  
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