Pentair FOLEO 5800 XTR User guide

FOLEO
5800 XTR
INSTALLER
MANUAL
WATER PURIFICATION

Installer Manual Foleo - Table of contents
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Table of contents
1. Generalities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1. Scope of the documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
1.2. Release management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3. Manufacturer identifier, product . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4. Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.5. Abbreviations used and glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.6. Norms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.6.1. Applicable norms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.6.2. Available certificates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.7. Procedure for technical support . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.8. Copyright . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.9. Limitation of liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.10. Scan & Service application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2. Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.1. Safety pictograms definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2. Serial and safety tags location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3. Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.3.1. Personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.3.2. Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.3.3. Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.4. Hygiene and sanitization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.4.1. Sanitary issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.4.2. Hygiene measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

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3. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
3.1. Introduction to softeners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1.1. Softening principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1.2. Variable refill function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1.3. Variable Refill/Brining regeneration cycle (5-cycles operation). . . . . 18
3.2. Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.2.1. General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.2.2. Performance flow rate characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.3. Outline drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.4. Description and components location . . . . . . . . . . . . . . . . . . . . . . 23
3.5. Softener’s available options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.5.1. Mixing device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
4.1. Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.2. Safety notices for installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.3. Installation environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.3.1. General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.3.2. Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.3.3. Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.3.4. Mechanical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.4. Integration constraints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.5. Softener connection to piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.5.1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.5.2. Installation layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.5.3. Tools and material required for installation. . . . . . . . . . . . . . . . . . . . . 29
4.5.4. Inspection/preliminary assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.5.5. Softener installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.5.6. Water supply line and bypass connections . . . . . . . . . . . . . . . . . . . . . . 32
4.5.7. Drain line connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.5.8. Brine line connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.5.9. Overflow line connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.5.10. Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

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5. Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.1. Home screen & commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.2. Quick program guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
5.3. Touchscreen controller quick start . . . . . . . . . . . . . . . . . . . . . . . . . 44
5.3.1. Format screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
5.3.2. Assistance name screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
5.3.3. Assistance phone screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
5.3.4. Assistance interval screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
5.3.5. Day and time screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.3.6. User assistance screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.3.7. Settings screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
5.3.8. Master setting screens. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
5.4. Master setting programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
5.4.1. Format screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
5.4.2. USB connection for field programming . . . . . . . . . . . . . . . . . . . . . . . . . 53
5.4.3. Valve screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
5.4.4. Regeneration screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
5.4.5. Relay output screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
5.4.6. Meter screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
5.4.7. Settings review . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
5.4.8. Water Saver Regen screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
5.4.9. Remote Regeneration screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
5.4.10. Chlorine generation screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
5.4.11. Non-factory setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
5.5. Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
5.5.1. Error log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5.6. Resetting the controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
6. Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
6.1. Softener commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
6.1.1. Water filling, draining and waterproofness inspection . . . . . . . . . . . . . 66
6.1.2. Quick cycling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
6.1.3. Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
6.2. Cleaning, disinfection and sanitization . . . . . . . . . . . . . . . . . . . . . . 67
6.2.1. Cleaning of softeners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
6.2.2. Disinfection with sodium or calcium hypochlorite. . . . . . . . . . . . . . . . . 67
6.2.3. Sanitization by electrochlorination process . . . . . . . . . . . . . . . . . . . . . . 68

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7. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
7.1. Display during operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
7.2. Display during regeneration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
7.3. Controller operation during programming . . . . . . . . . . . . . . . . . . 69
7.4. Manual regeneration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
7.5. Operation during a power failure . . . . . . . . . . . . . . . . . . . . . . . . . . 70
7.6. Remote lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
7.7. Sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
8. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
8.1. General system inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
8.1.1. Water quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
8.1.2. Mechanical Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
8.1.3. Regeneration test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
8.2. Recommended maintenance plan . . . . . . . . . . . . . . . . . . . . . . . . . 73
8.2.1. Maintenance instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
8.3. Adding salt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
8.4. Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
8.4.1. Use original spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
8.4.2. Use original approved lubricants. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
8.5. Cleaning and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
8.5.1. First steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
8.5.2. Softener cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
8.5.3. Brine tank, brine well, safety brine valve and air check cleaning. . . . 78
8.5.4. Injector and injector screen cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . 80
8.5.5. Controller replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
8.5.6. Brine valve and/or piston and seals & spacers replacement . . . . . . . 82
8.5.7. Other wear and tear parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
9. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94
9.1. Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
9.1.1. Alarm detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
9.1.2. Alarm alerts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
9.2. Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
9.3. System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

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10. Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
10.1. Softener . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
10.1.1. Safety brine valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
10.2. Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104
10.2.1. Valve body parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
10.2.2. Power head parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
10.2.3. Plastic turbine meter assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
10.3. Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
10.3.1. 1" BSP female stainless steel bypass . . . . . . . . . . . . . . . . . . . . . . . . . 108
11. Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

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1. Generalities
1.1. Scope of the documentation
This documentation provides the necessary information for appropriate use of the product and
informs users to ensure efficient execution of the installation, operation or maintenance procedures.
The content of this document is based on the information available at the time of publication. The
original version of the document was written in English.
For safety and environmental protection reasons, the safety instructions given in this documentation
must be strictly followed.
This manual is a reference and will not include every system installation situation. The person
installing this equipment should have:
• training in the 5800 valves with XTR series controllers and water softener installation;
• knowledge of water conditioning and how to determine proper controller settings;
• basic plumbing skills.
This document is available in other languages on https://www.pentairaquaeurope.com/product-
finder/product-type/softeners.
1.2. Release management
1.3. Manufacturer identifier, product
Manufacturer: Pentair International LLC
Avenue de Sevelin 18
1004 Lausanne
Switzerland
Product: Foleo 5800 XTR
1.4. Intended use
• For domestic use only;
• the water softener series Foleo may only and exclusively be used for residential water softening
under specified conditions, see 4.3.2. Water, page 25;
• the water softener series Foleo protects water pipes and connected water-carrying systems
from scaling, respectively from malfunctions and damage caused by scaling;
• the water softener series Foleo is designed for continuous supply of water for different family
sizes depending on the chosen model.
Revision Date Authors Description
A05.09.2018 BRY/FLA First edition.
B09.09.2019 BRY Corrections.
C15.11.2019 BRY Bleam sticker change

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1.5. Abbreviations used and glossary
Assy....................................................................................Assembly
DLFC ..................................................................................Drain Line Flow Controller
Refill Controller.................................................................Brine Line Flow Controller
Regen.................................................................................Regeneration
SBV.....................................................................................Safety Brine Valve
UF.......................................................................................Up Flow
1.6. Norms
1.6.1. Applicable norms
Comply with the following guidelines:
• 2006/42/EC: Machinery Directive;
• 2014/35/UE: Low Voltage Directive;
• 2014/30/UE: Electromagnetic compatibility;
• 2011/65/EC: Restriction of use of certain hazardous substances in electrical and electronic
equipment (RoHS);
• UNI EN ISO9001.
Meets the following technical standards:
• EN 55014-1;
• EN 55014-2;
• EN 61000-3-2;
• EN 61000-3-3;
• EN 61000-6-1;
• EN 61000-6-2;
• EN 61000-6-3;
• EN 61000-6-4;
• EN 61010-1.
1.6.2. Available certificates
•CE;
•DM174;
•ACS.
Please find beside the certifications for
some of our product families. Please
note that this list is not an exhaustive list
of all our certifications. In case of need
for more information please contact us.

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1.7. Procedure for technical support
Procedure to follow for any technical support request:
ACollect the required information for a technical assistance request.
→ Product identification (see 2.2. Serial and safety tags location, page 11 and 
8.1.2. Mechanical Checks, page 72);
→ Problem description.
BPlease refer to the "Troubleshooting" chapter, page 94. If the problem persists contact your
supplier.
1.8. Copyright
© 2019 Pentair International Sàrl All rights reserved.
1.9. Limitation of liability
Pentair Quality System EMEA products benefit, under specific conditions, from a manufacturer
warranty that may be invoked by Pentair’s direct customers. Users should contact the vendor of this
product for applicable conditions and in case of a potential warranty claim.
Any warranty provided by Pentair regarding the product may become invalid in case of:
• installation done by a non-water-professional;
• improper installation, improper programming, improper use, improper operation and/or
maintenance leading to any kind of product damages;
• improper or unauthorized intervention on the controller or components;
• incorrect, improper or wrong connection/assembly of systems or products with this product and
vice versa;
• use of a non-compatible lubricant, grease or chemicals of any type and not listed by the
manufacturer as compatible for the product;
• failure due to wrong configuration and/or sizing.
Pentair accepts no liability for equipment installed by the user upstream or downstream of Pentair
products, as well as for process/production processes which are installed and connected around or
even related to the installation. Disturbances, failures, direct or indirect damages that are caused by
such equipment or processes are also excluded from the warranty. Pentair shall not accept any
liability for any loss or damage of profits, revenues, use, production, or contracts, or for any indirect,
special or consequential loss or damage whatsoever. Please refer to the Pentair List Price to know
more about terms and conditions applicable to this product.

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1.10. Scan & Service application
Scan & Service mobile application is the ideal support for the maintenance person in his daily
business. A simple scan of an identification (ID) label (1) present on the valve with a smartphone gives
an instantaneously access to all updated information related to the product, such as:
• valve’s and tanks detailed configuration;
•manuals;
• spare parts lists;
• troubleshooting recommendations;
• multi-lingual videos, detailing how to best service a part;
• informations about new products, latest technologies, novelties about the Blue Network
program, etc....
No. Operation
ADownload the application "Scan & Service" from or in a
smartphone (4).
BOpen the application "Scan & Service".
CScan the bleam (2) stuck on the valve (3).
DNavigate to find information.

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2. Safety
2.1. Safety pictograms definition
2.2. Serial and safety tags location
NOTE
Ensure that the serial label and the safety tags on the device are completely legible and
clean. If necessary, replace them with new tags and put them in the same places.
CAUTION
Warns of a risk of minor injury or
major material damage to the device
or environment.
WARNING
Warns against serious personal injury
and damage to health.
DANGER
Warns against serious personal injury
or death.
MANDATORY
Standard or measure to apply.
NOTE
Comment.
PROHIBITION
Restriction to be observed.
Model
Electrical rating
Part number
Serial number
Production date
Production order

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2.3. Hazards
All the safety and protection instructions contained in this document must be observed in order to
avoid temporary or permanent injury, damage to property or environmental pollution.
At the same time, any other legal regulations, accident prevention and environmental protection
measures, as well as any recognized technical regulations relating to appropriate and risk-free
methods of working which apply in the country and place of use of the device must be adhered to.
Any non-observation of the safety and protection rules, as well as any existing legal and technical
regulations, will result in a risk of temporary or permanent injury, damage to property or
environmental pollution.
2.3.1. Personnel
Only qualified and professional personnel, based on their training, experience and instruction as well
as their knowledge of the regulations, the safety rules and operations performed, are authorized to
carry out necessary work.
WARNING
This appliance can be used by children aged from 8 years and above and persons with
reduced physical, sensor or mental capabilities or lack of experience and knowledge if they
have been given supervision or instruction concerning use of the appliance in a safe way and
understand the hazards involved.
WARNING
Children shall not play with the appliance.
2.3.2. Transport
The following points must be observed to ensure proper operation of the system:
• do not lay down or flip over the softener at any time. The media may paste to the upper
distributor thus obstructing its slots or enter the valve and may therefore compromise the
softener operation;
• pay attention not to hit the softener;
• use all the safety lifting systems to move the softener;
• do not lift the softener by the valve or bypass.
2.3.3. Material
The following points must be observed to ensure proper operation of the system and the safety of
user:
• beware of high voltages present on the transformer (220-230VAC);
• do not put your fingers in the system (risk of injuries with moving parts and shock due to electric
voltage).
2.4. Hygiene and sanitization
2.4.1. Sanitary issues
Preliminary checks and storage
• Check that the brine tank and the brine well are clean and free from burr, debris or any scraps;

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• check the integrity of the packaging. Check that there is no damage and no signs of contact with
liquid to make sure that no external contamination occurred;
• the packaging has a protective function and must be removed just before installation. For
transportation and storage appropriate measures should be adopted to prevent the
contamination of materials or objects themselves.
Assembly
• Assemble only with components which are in accordance with DM 174 and ACS or any local
norm/certification;
• after installation and before use, perform one or more manual regenerations in order to clean
the media bed. During such operations, do not use the water for human consumption. Perform a
disinfection of the system in the case of installations for treatment of drinking water for human
use.
NOTE
This operation must be repeated in the case of ordinary and extraordinary maintenance. It
should also be repeated whenever the system remains idle for a significant time.
NOTE
Valid only for Italy: In case of equipment used in accordance with the DM25, apply all the
signs and obligations arising from the DM25.
2.4.2. Hygiene measures
DANGER
Do not use with water that is micro-biologically unsafe or of unknown quality without
adequate disinfection before or after the softener.
WARNING
Water softeners using sodium chloride for regeneration will add sodium to the water.
Person who are on sodium-restricted diets should consider the added sodium as part of
their overall sodium intake.
Disinfection
• The materials used for the construction of our products meet the standards for use with potable
water; the manufacturing processes are also geared to preserving these criteria. However, the
process of production, distribution, assembly and installation, may create conditions of bacterial
proliferation, which may lead to odour problems and water contamination;
• it is therefore strongly recommended to sanitize the products. See 6.2. Cleaning, disinfection and
sanitization, page 67;
• maximum cleanliness is recommended during the assembly and installation;
• for disinfection, use sodium or calcium hypochlorite and perform a manual regeneration.

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3. Description
3.1. Introduction to softeners
3.1.1. Softening principles
Softening is an ion exchange process where the hard ions are getting exchange by soft ions, typically
sodium or potassium. This is achieved by placing the water in contact with an ion exchange resin and
ensuring the contact time is appropriate for the flow rate to produce.
The basic chemistry of softening resins is very simple: the resin is made of small polymer beads with
chemical functionality that selectively captures the divalent ions (such as Ca2+ and Mg2+ - hardness
ions) and releases in exchange less tightly held monovalent ions, usually sodium (Na+) or less
frequently potassium. Here below is shown the chemical reactions mechanism for softening:
The means that under certain conditions, the reactions can be reversed. This is due to the
equilibrium between the water composition and the amount of hardness that can be removed. This
reverse reaction is observed at different kinetics and at high monovalent ions concentration. Usually
for softening this conditions are obtained using concentrated NaCl (or KCl) solutions that are put in
contact with the resin. This is called regeneration:
Hardness Resin bead Exhausted resin
bead
Soft water
Saturated
brine
Exhausted
resin bead
Regenerated
resin bead
Waste Excess
salt

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The service and regeneration reaction can be done over and over, so softening systems last years.
A softener consists of different components:
• a tank, filled with softening resin;
• a valve, that will direct the inlet water flow on the resin bed so that the softening or regeneration
reaction can take place;
• a timer, that will control when the regeneration phases have to be done;
• a brine tank, where saturated brine solution is prepared for the regenerations.
The present softener will simply allow the previously described reaction to happen, alternating
softening period of few days with regeneration that may last up to few hours depending on setting
done. The softener is equipped with a controller that will trigger automatically the different phases of
service and regeneration upon the programming done.
The valve configuration has been chosen to be in accordance with the volume of resin contained in the
tank. Do not intend to modify it or you may cause kinetics changes and may cause regeneration
malfunction.
In order to ensure proper softener function, make sure it always contains salt in the brine tank and
remains electrically powered. Softener installation, start up and programming must be done by
trained professional water treatment specialist. Incorrect installation or wrong programming may
cause softener malfunctions or even damage the softener and its components.
Respect programming recommendations for each softener size in order to achieve best optimized
softener performances.
Softener requires periodical cleaning/maintenance operations to ensure proper function over years.
Those are described in the present manual on chapter 8. Maintenance, page 72.
3.1.2. Variable refill function
The Foleo softener series is designed to feature a variable refill for each regeneration. This is meant
to optimize the salt consumption of the water softener and allow yearly salt savings up to 30%
average* for the same volume of softened water therefore reducing the cost as well as the
environmental impact of discharging salt to the drain.
How does this work:
The Foleo series feature volumetric delayed regeneration, with variable reserve meaning that the
controller will plan the regeneration before complete capacity depletion based on registered water
usage. Therefore when the regeneration is initiated, the capacity is actually not totally depleted. The
XTR controller will take into account the capacity that was really used and will refill the brine tank so
that only what has been used for real is regenerated. The refill time is automatically calculated by the
controller at each regeneration, using the BLFC rate programmed in the electronic (0.5 gpm for
Foleo).
After the variable refill is performed, the softener will return to service for the programmed duration
of the Pause cycle (0-240 min). This time is used to allow refilled water to dissolve salt and become
saturated brine. Be sure to program a sufficient duration according to your local conditions and salt
type.
For best performance prefer to set up a regeneration time where there is low to no water
consumption.

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Should the softener be subject to 24/24h water production, the optional installation of the Pentair®
fast brine valve is required so that this pause cycle duration can be reduced to 3 minutes. Contact your
supplier for more information.
As an example, assuming the XTR has calculated a variable reserve to 20% of the initial full capacity
based on registered water consumptions, then the XTR will calculate a refill time so that only 80% of
the total theoretical brine quantity is produced, saving therefore 20% salt for this regeneration.
This variable refill function, combined with the upflow regeneration mode of Foleo's series where
brine is injected from bottom to top in a packed resin bed at low velocity is ensuring the best optimized
performances and savings in water softeners segment.
NOTE
Any manually started regeneration will initiate a regeneration with 100% of the theoretical
brine quantity to produce regardless from the water usage for the current service cycle.
Should a controller initiated regeneration (including remote signal started regenerations
and days override regeneration) start while less than 10% of the capacity is used, in any case
the calculated refill time will correspond to a minimum of 10% of the total theoretical brine
quantity.
*Compared to a standard downflow softener with optimized programming and configuration.

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3.1.3. Variable Refill/Brining regeneration cycle (5-cycles operation)
Service — normal use
Untreated water is directed down through the resin bed and up through the riser tube. The hardness
ions attach themselves to the resin and are removed from the raw water being exchanged on the resin
beads against sodium ions. The water is conditioned as it passes through the resin bed.
Brine tank refill — cycle C1
Water is directed to the brine tank, at a rate controlled by the refill controller [BLFC], to create brine
for the next regeneration. Refill duration is calculated by the controller on the basis of real resin
consumption. During brine refill, treated water is available at the valve outlet.
Service — cycle C2
After the refill, the valve comes back in to service position and stays as long as needed for brine
saturation.
Brine draw & slow rinse — cycle C3
The valve directs water through the brine injector and brine is drawn from the brine tank. The brine
is then directed down through the riser tube and up through the resin bed to the drain. The hardness
ions are replaced by sodium ions and are sent to the drain. The resin is regenerated during the brine
cycle. Then the slow rinse phase starts.
Backwash — cycle C4
The flow of water is reversed by the valve and directed down through the riser tube and up through
the resin bed. During the backwash cycle, the bed is expanded and debris is flushed to the drain, while
the media bed is remixed.
Rapid rinse — cycle C5
The valve directs water down through the resin bed and up through the riser tube to the drain. Any
residual brine is rinsed from the resin bed, while the media bed is recompacted.
NOTE
For illustration purpose only. Always verify inlet and outlet marking on the softener.

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SERVICE
C2
BRINE REFILL
C1
SERVICE
Normal use
RAPID RINSE
C5
BACKWASH
C4
BRINE DRAW/SLOW RINSE
C3
Soft water Hard water
7Mediabead
8Brine
9SBV+aircheck
4Drain
5Mediatank
6 Brine tank
1Inlet
2Outlet
3Valve

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3.2. Technical specifications
3.2.1. General
Softener type
Design specifications/ratings
3.2.2. Performance flow rate characteristics
NOTE
Flow rates are indicative data. Maximum flow rate to produce in order to respect the
required service velocity for an optimal ion exchange upon resin manufacturers
recommendation, regardless of the inlet pressure.
Foleo 5800 XTR 10 15 20 30
Softener cabinet ABS
Tank body Dowex®HCRS-s resin
Valve body Glass-filled Noryl®- NSF listed material
Rubber components Compounded for cold water - NSF listed material
Valve material certification WQA Gold Seal Certified to ORD 0902, NSF/ANSI
44, CE, ACS
Volume of resin 10L 15L 20L 28L
Approximative shipping weight 12 kg 18 kg 24 kg 35 kg
Salt storage 15 kg 15 kg 25 kg 25 kg
Operating pressure 1.4 - 8.0 bar
Hydrostatic test pressure 20 bar
Water temperature 1 - 43°C
Ambient temperature 0 - 52°C
Nominal (residual hardness 0°f) 0.60 m3/h 0.90 m3/h 1.20 m3/h 1.68 m3/h
Nominal (residual hardness 5-10°f) 0.72 m3/h 1.08 m3/h 1.44 m3/h 2.02 m3/h
Peak (residual hardness 5-10°f) 1.00 m3/h 1.50 m3/h 2.00 m3/h 2.80 m3/h
Drain
Outlet
Inlet
Overflow