InstallationManuals3.supplyhouse.com/product_files/viega-36043-install-instructions.pdf1.1Viega...

PureFlow ®

MANABLOC® Manifold Plumbing System

October, 2007

Installation Manual

Why you can dependon Viega PureFlow.

• A safe system

• Competitively priced

• Leak proof fitting connection

• Highly flexible and kink resistant

• Lightweight and easy to handle

• Fast and solder free installation

• No open flame during installation

• Reduced number of fittings used in wall

• Water Savings

• Long life expectancy

• Quick Hot Water Delivery

• Non-corroding

• Reduced flow noises

• In coils or straight lengths

• FostaPEX form stable tubing ideal forexposed runs

• Listed by NSF to meet the requirementsof ANSI 14 and 61 and NSF ProtocolP171 (CL-R/CL-TD)

• Listed to ASTM F876/F2023 and F877

IMPORTANT NOTICE

IN THE EVENT OF CONFLICT ORINCONSISTENCY BETWEEN THESEINSTALLATION GUIDELINES AND LOCALBUILDING OR PLUMBING CODES, LOCALCODES SHOULD TAKE PRECEDENCE.

NOTE: Failure to follow the installationinstructions will void the Viega PlumbingWarranty. NOTHING IN THISPUBLICATION IS INTENDED TO CREATEANY WARRANTY BEYOND VIEGA’SAPPLICABLE WRITTEN WARRANTY.

For additional information, contact Viega at877-VIEGA-NA.

This installation guide is intended for theMANABLOC® Manifold Plumbing System,including the MINIBLOC ManifoldPlumbing System Installation Instructions.

NOTE: References to ViegaPEX™ tubingmade throughout this publication includethe entire line of Viega cross-linkedpolyethylene products.

Working with Viegais the perfect solution.Viega researches, develops andproduces complete system solutions forcontractors. The components areproduced at our plants or are suppliedexclusively by the finest qualitymanufacturers. Each of our systems isdeveloped in-house and tested understringent quality control conditions toguarantee safety and efficient operation.

An internationalcompany with anational commitment.Viega PureFlow plumbing combinestechnology from both sides of the Atlanticinto the very best PEX plumbing systems forour customers.

Viega’s reach extends throughout NorthAmerica with distribution across the US,Canada and Mexico. Our network of salesexperts and wholesale distributors can meetyour needs whether you are in Boston orBerkeley. The products we deliver are thefinest quality offered at a highly competitiveprice. Our goal is to remain on the forefrontof the plumbing industry well into the newcentury, and with our advanced productsand a determination to remain the qualityleader, we are convinced thisaccomplishment is well within our reach.

Call 877-VIEGA-NA for your localrepresentative and wholesale location.

2Viega IM-PFMB-1007

PureFlow is a registered trademark of Viega LLC

MANABLOC is a registered trademark of Viega LLC

ViegaPEX is a trademark of Viega LLC

FostaPEX is a registered trademark of Viega GmbH & Co. KG

Copyright March 2007 Viega LLC, All rights reserved.

1 Introduction1.1 Viega . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41.2 PureFlow System Concepts. . . . . . . . . . . . . 5

2 Green Building2.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.2 Structured Plumbing . . . . . . . . . . . . . . . . . . 6

2.2.1 Parallel Systems. . . . . . . . . . . . . . . . . 62.2.2 Branch and Main Systems . . . . . . . 72.2.3 Combination Systems . . . . . . . . . . . 72.2.4 Domestic Hot water

Circulating Systems . . . . . . . . . . . . . 8

3 Code Compliance3.1 Plumbing Code Compliance

(Parallel Systems) . . . . . . . . . . . . . . . . . . . . . 93.2 Sizing of Parallel Water

Distribution Systems(MANABLOC) . . . . . . . . . . . . . . . . . . . . . . . . 9

3.3 Valve Requirementsfor Parallel Systems . . . . . . . . . . . . . . . . . . . 9

4 The MANABLOC4.1 The MANABLOC. . . . . . . . . . . . . . . . . . . . . 104.2 PureFlow PEX Tubing. . . . . . . . . . . . . . . . . 104.3 Supply And Distribution

Line Sizing . . . . . . . . . . . . . . . . . . . . . . . . . . 104.4 Overview And Carton Contents . . . . . . . . . 114.5 Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114.6 Valve Operation. . . . . . . . . . . . . . . . . . . . . . 124.7 Domestic Hot Water

Circulation Systems . . . . . . . . . . . . . . . . . . 13

4.8 Multiple MANABLOC Installations . . . . . . . 134.9 ViegaPEX General

Design/Installation Practices . . . . . . . . . . . 13

5 Mounting the MANABLOC5.1 Mounting The MANABLOC

Between Studs . . . . . . . . . . . . . . . . . . . . . . 155.2 Mounting The MANABLOC

Without Use Of MBB2 Straps . . . . . . . . . . 175.3 Surface Mounting The MANABLOC . . . . . 17

6 Installing Distribution Lines6.1 Installing Distribution Lines . . . . . . . . . . . . 196.2 Connecting Distribution Lines

to the MANABLOC . . . . . . . . . . . . . . . . . . . 196.2.1 Compression Connections

(3/8" & 1/2" ports) . . . . . . . . . . . . . . 206.2.2 PEX Press Connections

(1/2" ports) . . . . . . . . . . . . . . . . . . . . 206.2.3 PEX Crimp Connection

(1/2" ports) . . . . . . . . . . . . . . . . . . . . 216.2.4 Crimp Connection

(3/8" ports) . . . . . . . . . . . . . . . . . . . . 216.3 Connecting Distribution

Lines To Fixtures . . . . . . . . . . . . . . . . . . . . . 226.4 Water Supply Connections . . . . . . . . . . . . 23

7 Filling and Testing. . . . . . . . . . . . 25

8 System Disinfection8.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Terms Used In This Guide:

PEX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ViegaPEX cross-linked polyethylene tubingAHJ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Authority Having JurisdictionPPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Parts Per MillionNSF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NSF International, Inc. (formerly National Sanitation Foundation)CAN/CSA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Canadian Standards Association"shall" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Required; a mandatory procedure"may" or "should" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A suggested optional procedure

3 Viega IM-PFMB 1007

CONTENTS

1.1 Viega

For over 100 years, Viega has beena globally trusted name in theplumbing industry.

Through innovative techniques,sophisticated technologies, andacquisition of the top PEX plumbingproducts in the US, Viega has becomethe industry leader for PEX plumbing.

Viega produces a comprehensiverange of plumbing and heatingequipment. Anywhere water flowsin a building Viega manufactures asystem to fit. The company’sexperience with press fittingtechnology in bronze, stainless steel,and copper led to the development ofthe PureFlow water distributionsystem. With the acquisition ofVanguard Piping Systems and theintegration of their PEX plumbingproducts into the PureFlow line, Viega

is now positioned as the number onesupplier of PEX plumbing systems inNorth America.

Today, Viega engineers andmanufactures over 12,000 systemcomponents at five state-of-the-artfactories including our PEX tubingfacility located in the heart of the US.Viega quality has proven itself inmillions of systems installed aroundthe world. Viega has a history in NorthAmerica of technological innovationand customer service that issecond to none.

The Viega product line now iscomprised of multiple brands;ProPress® flameless copper joiningtechnology; PureFlow® flexible PEXtubing plumbing technology;ProRadiant comfortable efficientheating technology; and S-no-Ice®snow and ice melting technology,to name a few.

Each line is selected so thatcomponents work together tocreate a complete system concept.PureFlow plumbing providescomplete PEX systems for potablewater distribution, including manifolds,PEX and multilayer tubing, fittings, andvalves. The ProRadiant programincludes a wide range of hydronicradiant systems and controls as wellas thermostats.

In addition, the Viega S-no-Ice lineincludes snow and ice detectioncontrols, heat exchangers, and snowmelting systems.

As the pioneer in combiningtechnology and engineering expertisefrom both sides of the Atlantic into thevery best systems for our customersin North America, we are proud topresent you the world’s finest potablewater distribution systems: PureFlow.The name says it all.

1. INTRODUCTION

4Viega IM-PFMB-1007

1.2 PureFlow SystemConcepts

ViegaPEX PureFlow is a high qualityflexible PEX system for hot and coldpotable water distribution.

The PureFlow plumbing system offersmaximum security thanks to cold pressand full circle crimp fitting techniques.These fittings guarantee shorterinstallation times for all types ofapplications, and vastly reduces therequired number of fittings.

Top quality materials such as brass,bronze, stainless steel, and durable,environmentally compatible plasticsprovide the basis for the very higheststandards of quality at Viega.

PEX tubing offers outstandingversatility. A total of 236million feet ofPEX tubing for potable waterapplications was produced in 2004alone, and provides conclusiveevidence of its importance in plumbinginstallation. This is clearly the result of

excellent workmanship, fast andsimple installation and the reliabilityand safety which are characteristic ofthe Viega system concept.

The efficiency of the integrated systemconcept for Viega branded products isconfirmed by:

•perfectly coordinated components

•quick delivery at short notice

•time-saving installation

•complete installation of an entiresystem from one supplier

Viega’s comprehensive servicesinclude technical support and warrantycoverage, subject to the exclusive useof PureFlow system components.

PureFlow is a high-quality plumbingsystem. It is able to withstand highlevels of thermal and mechanicalstress (80 psi at 200°F, 100 psi at 180°F,160 psi at 73.4°F).

The systems incorporate:• ViegaPEX tubing; red, white and bluecross-linked polyethylene tubingdesigned with superior chlorineresistance

• ViegaPEX Ultra tubing; red, white,blue, and black cross-linkedpolyethylene tubing with addedresistance to UV

• Viega FostaPEX tubing; cross-linkedpolyethylene with additionalaluminum and polyethylene layers toprovide rigidity and form stability,available in red or silver todifferentiate hot water lines

• A range of bronze, brass or plasticfittings for both PEX Press and PEXCrimp fitting systems

• A range of inline, manifold and stopvalves for both press and crimpfitting systems

• Viega PureFlow press tools and jawsfor the PEX Press fitting systems

• Viega PureFlow crimp toolsfor the PEX Crimp fitting systems

5 Viega IM-PFMB 1007

• Quiet Operation – Flexible ViegaPEXtubing reduces water hammer noiseand provides quiet operation

• Balanced Water Delivery – multiplefixtures can be used simultaneouslywithout noticeable pressure ortemperature changes.

2.2 Structured Plumbing

Structured plumbing is the practice ofinstalling and/or designing a plumbingsystem in a manner that enhances thesystems performance by reducingwater waste and hot water deliverytimes. This plumbing strategy israpidly becoming important for homebuilders in markets where waterconservation is prevalent. Viega,being the leader in innovation andtechnology for the plumbing andheating systems, has embraced thisphilosophy with its plumbingproducts.

2.2.1 Parallel Systems:

Using manifolds (see illustrationbelow), the installer can plumb ahouse with no fittings hidden insidewalls. By installing a manifold systemnear the hot water source, tubing canbe run directly to each fixture withoutusing further fittings. This systemprovides the lowest pressure losses

Viega IM-PFMB 1007 6

2. GREEN BUILDING

2.1 General

Green Building incorporatesenvironmental considerations intoevery phase of the home buildingprocess where multiple factors areconsidered during construction aswell as its operation and its impact onthe environment. LEED® (Leadershipin Energy and Environmental Design)was established by the U.S. GreenBuilding Council (USGBC) as asystem to define and measure "greenbuilding". This voluntary market drivenrating system is based on existingproven technology, awarding creditsfor different aspects of environmentaldesign. There are four levels ofperformance that can be achieved perthese resource categories, they areCertified, Silver, Gold, and Platinum.

Viega’s PureFlow plumbing systemscan be incorporated to improve bothwater and energy efficiencysupporting this philosophy, earningyour home credits toward a LEEDcertification level (when followingLEED installation criteria). To obtainmore information concerning LEEDcertification for your home, contact theUSGBC.

The MANABLOC Manifold is a uniqueplumbing system that can also beincorporated to provide water andenergy savings combined with asuperior plumbing system forhomeowners. It’s a simple conceptthat provides extraordinaryperformance: each fixture is fed by itsown flexible water distribution line,which runs from a central manifold.By providing each fixture with its owndistribution line, the line can be sizedappropriately so hot water can bedelivered more rapidly. Since the lineis dedicated to a single hot or coldfixture, less water is required to purgethe line, which saves time, energy andcan reduce water waste by up to 40%and save thousands of gallons ofwater per year.

Clean System And Clean Installation

The MANABLOC is preferred by manyinstallers thanks to its fast and safeinstallation. There are no fumes fromsolvents to contend with and notorches required on site forinstallation. Installation time issignificantly less than that of a rigidplumbing system due to the flexibilityof ViegaPEX™ tubing and thesimplicity of the PureFlow® fittingsystems. Viega tubing is color codedto make installation easier and theconnection of fixtures to the properdistribution line faster and morefoolproof. Homeowners canbe assured of the purity of the systemdue to the third party NSF-61certification carried by both theMANABLOC and ViegaPEX tubing.Homeowners also benefit from thecorrosion resistance of ViegaPEX,which helps to prevent contaminationof drinking water.

Fewer Fittings Behind The Wall

The MANABLOC requires fewerfittings than branch and mainplumbing systems and very few areneeded behind the wall. TheMANABLOC is installed using flexibleViegaPEX tubing that can be bentaround obstacles without the need forfittings. In most cases each dedicatedline has a fitting at the MANABLOCand one at the fixture connection withno fittings located behind the walls.

Rich In Homeowner Benefits

Home Builders enjoy the manyfeatures the MANABLOC systemoffers their customers over branchand main plumbing systemsincluding:

• Faster Hot Water Delivery – properlysized lines deliver hot water up tofour times faster

• Better Control of the PlumbingSystem – individual shutoff valvesprovide a simple way of servicing afixture or adding on to the system

Parallel Method.

Viega IM-PFMB 10077

as well as eliminating interferencebetween fixtures. Often each fixturecan be fed with smaller diametertubing which is easier and fasterto install.

Design Factors For InstallingA Parallel System

• Water Heater Placement

This should be as close as possible tothe MANABLOC to minimize extrawater from being stored in the largerhot water supply lines between theMANABLOC and water heater.

The longer this hot water supply lineis the greater the volume of waterrequiring purging through the faucetbefore hot water is available. Thiscauses greater water waste andlonger hot water delivery times.

• Proper Water Distribution LineSizing To Each Fixture

This is crucial for over all systemperformance. If you over size adistribution line to a fixture (1/2" PEXline supplying a sink instead of a 3/8"PEX line) you are essentially doublingthe volume of water being stored inthat line. This can take roughly twiceas long to purge compared toproperly sizing the line.

The fixture is what dictates water flow(federally mandated, governed bycode). The tubing simply applies afriction lost dictated by its size andlength. Therefore, as long as you donot under size a distribution line or runit excessive distances (60 feet orgreater), the system will performproperly maintaining sufficientpressure and flow.

• The Length Of A Distribution LineRun To Each Fixture

This can drastically affect theperformance of a MANABLOC system,the longer the line is the more waterbeing stored within it, and therefore,the longer it will take to purge it outbefore hot water can reach the fixture.

This is just as important as properlysizing each distribution line. TheMANABLOC should be locatedsomewhat central to your fixturegroups keeping within 60 feet or lessof each fixture.

If you can not accomplish this withone MANABLOC you may need touse two MANABLOCs, locating one ateach end of the home to split thedistribution line distance betweenthem (see section 4.8 for use ofmultiple MANABLOCs).

2.2.2 Branch and MainSystems

This method of plumbing iscommonly referred to as aconventional plumbing system, orbranch and tee systems, which usescopper/rigid tubing with tee andelbow fittings.

This system uses a large diameter"main" supply line (minimum 3/4") forboth hot and cold water supplies thatruns throughout a structure to or neareach fixture group with smaller"branch" lines teeing off the main tosupply each fixture.

While this system can reduce theamount of tubing used it requiresmore fittings to be used, which canincrease installation time and cost.

Design Factors For InstallingBranch And Main Systems

• Design the layout as condensedas possible

Keep the main hot supply line close tothe fixture groups with the branchlines shorter than 6 feet. This will helpprovide hot water in a reasonableamount of time with a more tolerableamount of wasted water.

The limiting factor for installers toaccomplish an optimal design is howspread out the fixture groups arewithin the structure.

If the builder did not put any thoughtinto keeping the fixture groupscondensed, a branch and mainsystem will have terrible hot waterdelivery times with substantialwater waste.

If you have a floor plan thatincorporates stacked or back to backfixture groups then a branch and mainsystem can be an effective alternativeto a parallel system.

One disadvantage to these systems isthey store excess amounts of water inthe large main lines, therefore thefurther away the fixture is, the longerthe main supply line must be to reachit, purging all stored water out beforehot water reaches the fixture.

Another trait these systems suffer fromis noticeable pressure drop duringmultiple fixture use. When you turn onmultiple fixtures you are increasing thewater flow (load) within the main line,causing higher friction loss equal topressure loss at the point of use. Thisis why you notice a drop in pressure(and potentially a temperaturechange) in your shower when a toiletis flushed.

2.2.3 Combination Systems

A combination system uses multiplemanifolds combined with abranch and main type supply system.These systems use small manifolds

Branch Installation.

located throughout a structure placednear each main fixture group and aresupplied by the main hot and coldsupply lines similar to the branch andmain system. The manifoldsessentially branch multiple lines froma common location in lieu of multipletee fittings spread out. This takesadvantage of benefits from both typesof systems and helps keep hiddenfittings to a minimum.

Design factors for installingcombination systems

Just like the branch and main system,condensed floor plan layouts arepreferable to minimize hot water mainsupply lines being stretched outeverywhere. This additional waterrequires purging prior to hot waterbeing present at each fixture. Thesesystems can also suffer fromfluctuating pressure during multiplefixture use.

2.2.4 Domestic Hot WaterCirculating Systems

A hot water circulation system can beincorporated in most plumbingsystems and works by constantly (orperiodically throughout the day on atimer) circulating hot water throughthe main hot supply line of yourplumbing system. This is done by useof a return line at the end of the mainhot supply line, and a low flow pump(usually near the hot water tank).It keeps hot water readily available

throughout the entire main hot watersupply line eliminating the need topurge the entire line before hot wateris present at the fixture.

There are a number of hot watercirculation systems available in themarket place that offer a variety ofoptions.

These systems are ideal for branchand main or combination systemswith spread out fixture groups/floorplans, as well as for larger homesusing multiple MANABLOCs in aparallel type system.

Design Factors For Hot WaterCirculation Systems

• Installing a hot water circulationsystem

You will want to use either a gas orelectric tank water heater. Use of atankless or instantaneous type waterheater will drastically increase theoperating cost of the system.

There are many types of thesesystems available on the markettoday. Research which type is best forthe particular application. Insure allthe components being used within thecirculation system are rated and/orapproved for a hot water circulationsystem. These systems may requiresome maintenance and/or repairsover time which could includecomplete pump replacement.

Note: There are costs associated withrunning these systems due to theelectricity required to operate thepump, this will vary depending on thefrequency of operation and size of thepump.

8Viega IM-PFMB 1007

Combination Installation.

Viega IM-PFMB 10079

3. CODE COMPLIANCE

3.1 Plumbing CodeCompliance(Parallel Systems)

The MANABLOC parallel waterdistribution system meets the ASTMF877, standard specification forcross-linked polyethylene (PEX)plastic hot and cold water distributionsystem utilizing ViegaPEX tubingmeeting the requirements of theASTM F876, standard specification forcross-linked polyethylene tubing.

The 2006 International PlumbingCode® (IPC) and the 2006 UniformPlumbing Code™ (UPC) recognizeand list these ASTM standards withintheir respective mandatory standardsand/or approved material sections.

The MANABLOC is IAPMO listed tothe UPC utilizing both 3/8" and 1/2"PEX tubing sizes for distribution.

3.2 Sizing of Parallel WaterDistribution Systems(MANABLOC)

Sizing of Parallel Water DistributionSystems (MANABLOC) are addressedin both the IPC and UPC 2006plumbing codes.

In the IPC, section 604.5 Size of fixturesupply states, "The minimum size ofindividual distribution line utilized ingridded or parallel water distributionsystems shall be as shown in Table604.5." This table includes 3/8", 1/2"and 3/4" size tubing. In the UPC,section 610.4 it states, "Listed parallelwater distribution systems shall beinstalled in accordance with theirlisting, but at no time shall any portionof the system exceed the maximumvelocities allowed by the code." TheMANABLOC’s IAPMO UPC listingsays to install per the manufacturerscurrent installation instructions.Therefore, these instructions shallbe used to size and install thesetypes of systems.

3.3 Valve Requirements forParallel Systems

The IPC and UPC codes addressvalves in sections 604.10.3 Valves,and 605.5 respectively, which allowthe use of manifold valves in parallelsystems in lieu of valves at the fixture,as long as they are installed at themanifold and are identified with thefixture being supplied.


4. THE MANABLOC

4.1 The MANABLOC

The MANABLOC control unit is testedto the requirements of ASTM F877and certified by NSF International. TheMANABLOC supply inlet connectionsutilize a special 1" MANABLOCgasketed swivel connection thatrequires MANABLOC transition fittings(not included in the MANABLOCpackage, must be purchasedseparately). Transition fittings availableinclude NPT male thread, brass insert(PEX crimp), bronze insert (PEXpress), and compression.

Connections for the individual PEXdistribution lines are a mechanical-type fitting and will not work withstandard pipe fittings. Use only fittingssupplied with the MANABLOC or otherfittings designed for special porttransitions available from Viega, listedin the PureFlow Plumbing SystemCatalog. Warranty coverage appliesONLY when the MANABLOC isinstalled with ViegaPEX tubing and inaccordance with the InstallationInstructions, local code and goodplumbing practices.

Protect the MANABLOC fromconstruction debris, directexposure to sunlight and

inadvertent chemical exposure bystoring it in its original shipping cartonuntil installation.

MANABLOC port connections areavailable in Bronze Press, BrassCrimp, Poly Crimp, and Compressionavailable in all 3/8", 1/2" or acombination of both for all connectiontypes as well as a model for hard andsoft water systems.

4.2 PureFlow PEX Tubing

Components utilized in theMANABLOC plumbing system consistof ViegaPEX, ViegaPEX Ultra, andFostaPEX cross-linked polyethylenetubing, fixture transition fittings, water

service swivel connections,compression port connections andthe MANABLOC control unit. TheMANABLOC and ViegaPEX tubing aremanufactured to national andinternational standards and are listedby recognized third-party agencies.

ViegaPEX cross-linked polyethylenetubing is produced to ASTMF876/F877 and is tested and listed byrecognized agencies (such as NSFInternational) to the requirements ofthese standards. ViegaPEX tubing hasa design pressure rating of 100 psi @180°F, and 160 psi @ 73°F.

These are maximum-use ratings.ViegaPEX tubing and the resin usedin the manufacture of ViegaPEXtubing have been tested and listed byNSF to meet the requirements ofANSI/NSF 14/61, and NSF ProtocolP171 CL-R/CL-TD, Chlorine Resistanceof Plastic Piping Materials.

4.3 Supply And DistributionLine Sizing

The general sizing information shownmay be appropriate for manyMANABLOC installations. Theserecommendations are based on flowrates of typical fixtures that require 8psi residual pressure.

For more complete and definitivesizing information for distribution linelength limitations, request theMANABLOC Tube Size Guide fromyour local supplier or from Viega.

Typical supply line size:

3/4" up to 2-1/2 baths1" up to 4-1/2 baths

Typical distribution line size:

3/8" up to 2-1/2 GPM fixture flowrequirement (lavs, toilets, bidets,bar sinks, kitchen sinks,dishwashers, some showers(no tub fill)* and some washingmachines)**

1/2 up to 4 GPM fixture flowrequirement (hose bibbs, tubs,showers, washing machines,whirlpool baths, soaking tubs, etc.)

* Due to the many types of showervalves, it is recommended that youconsult the valve manufacturer’sliterature to determine the actual flowrate and required residual pressuredemands of the fixture. Use theMANABLOC Tube Size Guide todetermine distribution line size andlength limitations.

**Some washing machines use atimer instead of a water-level sensorto determine when the machine hasbeen filled with the proper amount ofwater.

There are cases in which low supplypressure or excessive distribution linelength may cause some machines tofill to a level less than designed.Consult the washing machinemanufacturer’s literature to determinethe actual fill rate and residualpressure requirements for distributionline size.

Hose Bibb Note: If the hose bibbs areprimarily for irrigation purposes, theyshould be supplied from the mainservice line prior to the MANABLOC.

The service line needs to be sizedappropriately for the additional waterdemand. A typical residentialplumbing system can not beplumbed with all 3/8" distributionlines. It is the decision of the user tochoose a combination of both 3/8"and 1/2" lines or to upsize the entiresystem to 1/2".

However, supplying fixtures with 1/2"lines when it is unnecessary for thefixture demand, will increase the waittime for hot water delivery to thosefixtures. The best water and energysavings of a MANABLOC system arerealized when distribution lines are

Viega IM-PFMB 100711

Cold WaterSupply Inlet

or Outlet

Y-Block Cold Port(s) Hot Port(s) Valve Key

Hot WaterSupply Inlet

Port Valve

Cold Port(s)

Divider Plate

Plastic MountingBracket

Cold WaterSupply Inlet

or Outlet

sized according to the fixture demandand the length of the individual line(see the MANABLOC Tube Size Guidefor details on sizing a typical system).

A MANABLOC with all of the samesize ports, can easily have some portsconverted to 1/2" with optional PEXCrimp adapter MXLSA33 (3/8" port to1/2" tube).

Conversely, 1/2" ports can beconverted to 3/8" with optional PEXCrimp adapter MXLDC24, or PEXPress adapter MXPDC24 (1/2" portto 3/8" tube).

Note: Each port converted to a largeror smaller size requires one adapterand one PEX Crimp ring or PEX Presssleeve (sold separately).

4.4 Overview And CartonContents

Additional package contents include:• Valve T-Handle• Instruction/Warranty Packet- to be left at installation site

• Port Labels

4.5 Location

Before installing the MANABLOC,review the following instructions.

NOTE: The MANABLOC is much likean electrical breaker box. When afixture needs repair, the line to thatfixture may be shut off at theMANABLOC, eliminating the need toshut down the water supply for theentire house.

This feature requires that theMANABLOC be accessible afterinstallation.

1. Under no circumstances shall theMANABLOC be located in apermanently covered area (behindsheetrock, plywood, paneling),where freezing temperatures mayoccur, or in direct sunlight. THEMANABLOC MUST BEACCESSIBLE and there shall besufficient clear area in front of theMANABLOC to provide access.

2. When local code allows, theMANABLOC unit can be mountedin a fire rated wall provided theaccess door meets the same ratingrequirements as the wall and isinstalled over the access opening.


3. When installing the MANABLOC ina location other than betweenstuds, provisions must be made tosupport the tubing runs as they exitthe MANABLOC. (See section 5).

4. Any installed cover panel shallallow access to the MANABLOCand its mounting screws, the portvalves, distribution line connectionsand supply line connections.

5. To maximize potential water andenergy savings, the MANABLOCshould be mounted as close as ispractical to the hot water source,taking into consideration thefollowing:

a. When the MANABLOC ismounted above the water heater,there shall be a minimum of 36"of connecting tubing between thewater heater and the MANABLOCto reduce the chance ofheat stacking;

b. When the MANABLOC ismounted beside the water heaterand is connected with tubingincorporating a horizontal flow, it

shall be connected with at least18" of tube length. Mounting theMANABLOC within 8 (eight) feetof developed tube length of thewater heater will minimize deliverytime of hot water to individualfixtures.

c. The unit should be installed in anarea which is centrally located tothe most dense concentrationof served fixtures. Someapplications will require that theMANABLOC be mounted furtherthan eight (8) feet from the hotwater source. See page 5 forsuggestions to reduce hot waterdelivery time in these instances.

6. DO NOT install the MANABLOCwithin a continuously recirculatinghot water plumbing loop. TheMANABLOC, however, may besupplied from a recirculating hotwater loop. (See figure below.)

7. Position the MANABLOC so that itcan be securely fastened throughthe holes provided in the mounting

If the MANABLOC must be mounted further thaneight (8) feet from the hot water source, theMANABLOC may be supplied from a recirculating hotwater loop with ViegaPEX CL-R listed PEX tubing.

Continuously Recirculating Hot Water Plumbing Loops

brackets. The mounting surfaceshould be as flat as possible so asnot to induce any twisting orbending forces on the unit. TheMBB2 Mounting Straps simplifymounting between studs on 16"centers.

4.6 Valve Operation

A MANABLOC system, which hasvalves on all of the outlet ports, doesnot require stop valves at the fixtures.However, the Authority HavingJurisdiction (AHJ) may require stopvalves at some fixtures.


Note: these valves are field-repairable.Contact Viega Customer Service formore information on this procedure.

If a main inlet/outlet will not be used, itmust be capped (use Part No.ECAP1).

The main service line to theMANABLOC may include a mainshut-off valve, as required by localcode. Although a shutoff valve for themain service line at the MANABLOCitself is not required, it can be abeneficial option for a homeowner andis recommended.

Local code may also require theinstallation of a check valve, PRV(pressure reducing valve), back flowpreventer, etc. To prevent debris andother particles from entering thesystem, a strainer may be installed inthe service line.

4.7 Domestic Hot WaterCirculation Systems

ViegaPEX and the MANABLOC canbe used in continuously recirculatingdomestic hot water plumbing loops,provided:

1. The plumbing loops shall operatewith water temperatures of 140°F orlower, as required by most modelplumbing codes.

2. The recirculating loop is forsupplying hot water more quicklyto the MANABLOC, not to circulatethrough it or the distribution lines.DO NOT include the MANABLOCwithin a continuouslyrecirculating loop.

NOTE: The distribution lines and theMANABLOC are not to be part of thecirculating system. The loop is toprovide hot water more quickly to theMANABLOC only.

4.8 Multiple MANABLOCInstallations

If a home requires multipleMANABLOCs to service the numberof fixtures in the home, theseguidelines should be followed if theMANABLOCs are closely locatedto each other.

• Consider dividing high demandfixtures between the units.

• Consider a reasonable division, i.e.upstairs/downstairs, east/west orfront/back.

Locating a Remote MANABLOC

A remote MANABLOC is sometimesrecommended to achieve maximumefficiency from your MANABLOCsystem.

• It can be advantageous when theline lengths are excessive from onecentralized MANABLOC unit.

• When the home requires more thanone unit due to the number offixtures or size of the home, you

may want to consider locating aremote unit near an outlying groupof fixtures.

4.9 ViegaPEX GeneralDesign/InstallationPractices

This section only addresses generaldesign/installation practices forViegaPEX tubing, refer to thePureFlow® Water Systems InstallationManual for more detailed instructions.

Insulating each PEX tube individuallyor as a group is not generallynecessary if the PEX tubing isinstalled within the insulation envelopeof the structure, i.e. the heated area.For example, the tubing may beinstalled under the insulation in theattic or within an interior wall of aheated space.

Use metallic connectors to attach PEXto gas water heaters (Viega Part No.XLSE4418, XLMSE4418 or similarfabricated metallic assembly).

Install a minimum 18" of metallic orother piping between the water heaterand PEX. For electric water heaters, itis permissible to connect directly tothe inlets and outlets with a brassswivel elbow or straight brass swivelfitting.

Protect the PEX tubing with non-metallic sleeving material where itenters and/or exits a slab or at masspenetrations. PEX need not besleeved its entire length within theslab. However, full-length sleeving isallowed. Penetrations throughconcrete walls may be sleeved with alarger size metal or plastic tube.Protect the tubing from any sharpedges where it enters and exits largersleeving material.

These are general guidelines toconsider when installing ViegaPEXtubing with a MANABLOC system,please refer to the PureFlowinstallation guide for more detail onPEX tubing installations.


COLD WEATHER CAUTION!The thermoplasticcomponents of the

MANABLOC, like all thermoplastics,have decreased resistance to impactunder freezing conditions and couldbe damaged. Increased care must beexercised when installation is to occurunder freezing conditions.

BEFORE INSTALLING THEMANABLOC, MAKE SURE THELOCATION REQUIREMENTS HAVEBEEN MET.

Extra caution should be taken inhandling the MANABLOC whentemperatures are below freezing.Tubing penetrations may requiresleeving or the installation of aninsulator.

PEX tubing should always beshielded from direct orindirect sunlight.

PEX tubing shall be storedunder cover, shielded fromdirect and indirect sunlightwhen the material is storedfor any length of time. Shortexposure times, of ViegaPEX,FostaPEX and PolyAlloyfittings, not exceeding thetotal accumulatedrecommended exposure timeare permissible. See thePureFlow® Water SystemsInstallation Manual for moreinformation.

When the tubing penetrates at anangle in relation to the hole, it may besubject to a sharp edge, which coulddamage the pipe. Acceptable sleevingmaterials include flexible plastictubing, foam pipe insulation or anapproved plastic insulator.

It is not generally necessary to sleevePEX when penetrating woodenframing members or non-metallicfinished or unfinished walls. However,if there is a doubt, sleeve the pipe orinstall an insulator.

Sleeve all penetrations ofmetal, metal studs, andmasonry or concrete.

When penetrations must be sealed forair infiltration purposes, there areseveral options available. A goodgrade of silicone, acrylic, orsiliconized acrylic caulking (DO NOTuse oil-base caulks), most of thecanned expanding foams,and open- or closed-cell pipeinsulation are good sealing materialsand may be used in direct contactwith PEX tubing. Other materials maybe used provided they do not causeshort or long term damage to the PEXtubing.

If there is no information available onthe compatibility of the proposedsealing material, wrap the tubing withseveral layers of aluminum foil in thearea of contact and extending a fewinches on both sides before applyingany sealing material.

Most building codes require the useof a fire-stopping compound whentubing penetrates a fire-rated wall.There are a number of fire stoppingcompounds readily available that havebeen listed for use with PEX tubing.These compounds come in standardcaulking tubes and are identified aswaterbased, acrylic or latex. Consultthe compound manufacturers’instructions for proper application.

DO NOT APPLY CHEMICALSTO THIS MANABLOCPLUMBING SYSTEM


5.1 MOUNTING THE MANABLOC

5.1 Mounting TheMANABLOC BetweenStuds

NOTICE! Please leave this installationguide for the homeowners reference.Local code may also requireadditional labeling directly adjacent tothe MANABLOC or on the inside ofany cover panel.

Dimensions in these instructions arefor 16" stud centers, and must beadjusted for other stud spacing.

Once the general location of theMANABLOC has been determined(see page 11 for guidelines), theMANABLOC may be mounted to asuitable surface between a pair ofadjacent studs. For 16" stud spacing,the MBB2 Mounting Straps cansimplify installation.

Tools Required• Electric Drill• Pencil or Pen• Framing Square• Tape Measure• 3/4" and 1-1/4" Wood Drill Bits• #2 Phillips Head Screwdriver• Permanent Marking Pen*• Tubing Cutter - Stock Code 21304or HAK67

• PEX Press/Crimp Tool(s)*• MANABLOC Wrench - Part No. MW1(Compression Blocs only)

Additional Materials• Wood or Drywall Screws - 1/2" or longer• 1/2" or 3/4" Plywood - only requiredwhen not mounting between studs

• Nylon Ties - Part No. HB14120• PEX Distribution Line Tubing• 3/4" or 1" Supply Line Tubing• MANABLOC 1" Swivel Supply Fittings• Fixture Transition Fittings• Tubing Clamps and Hangers• MANAPANEL Access Panel*• Tubing Uncoiler*• Tube Turnouts (recommended)* Optional or may not be required forsome installations

1. Lay the MANABLOC, plasticbrackets down, on a suitable flatsurface that is large enough toaccommodate the full-length of theMANABLOC. Place a MBB2Mounting Strap under each plasticmounting bracket (located at thetop and bottom ends of theMANABLOC). Attach the plasticmounting bracket at one end of theMANABLOC to the center two holesof a Mounting Strap using theprovided self-tapping pan-headscrews. The screw heads must beon the accessible side of themounting strap. Repeat at the otherend of the MANABLOC. Tightenscrews securely.

2. Standing behind the studwall,measure up from the floor andmake a mark on the back of one ofthe studs to represent the top of theMANABLOC as shown in theillustration.

This mark should be between 4 feetand 6 feet from the floor but maybe at any height, provided theheight will allow all valves on theMANABLOC to be accessible. Witha framing square or level, transferand mark the noted height on theother stud.

NOTE: A residence intended fordisabled persons may require that theMANABLOC be mounted lower in thewall to provide access.

4' to 6'from floor

Measure up from the floor while standing behind the studwall. Mark a location for the top of the MANABLOC.

3. Standing behind the stud wall, holdthe MANABLOC facing away fromyou and align the top of the UPPERMBB2 Mounting Strap to the line onthe stud that you made in Step 2.Loosely attach this Mounting Strapflush to the back outer edge of onestud using a 3/4" or longer drywallor other suitable wood screw (A).See illustration.

4. Line up the LOWER Mounting Strapwith the back outer edge of thestud and attach it in the samemanner (B). Attach the remainingstrap ends (C & D) to the otherstud, and tighten all screws.

5. Standing in front of the wall, use aframing square or straight edgeand mark the center line position ofthe top and bottom ports onto bothstuds (see illustration).

Mark the centers of the top andbottom MANABLOC ports (A, B)and the ports directly above andbelow any divider plate (C, D)


When the MANABLOC includes adivider plate, also mark the locationof the ports directly above andbelow the divider plate onto bothstuds.

6. Detach the MANABLOC from itsMounting Straps (or 1 x 4s) andremove it from the installation areato prevent wood chips or otherdebris from falling into the unit.

7. Transfer the port location marksmade in step 5 to the insides of thestud cavity using a square andpencil.

8. Measure 1-5/8" from the mountingsurface. Draw a vertical line on thestuds that passes through each ofthe horizontal port center linesmarked in step 7 (see illustration).Be sure to mark the inside of bothstuds.

9. Push a small nail through theprinted center line at one end of theDrill Guide (A). Push the nail intothe cross formed where the topport mark intersects with the 1-5/8"mark. Tap the nail into the stud tohold the Drill Guide in place.

10. Push a small nail through theprinted center line on the DrillGuide with the center line of theports above the divider plate (B).Tap the nail into the stud to holdthe Drill Guide in place.

If the MANABLOC does not havea divider plate, push the nail intothe printed center line of thebottom most port (E) and on intothe corresponding mark on thestud. Tap the nail into the studto hold the drill guide in place.

11. Using an awl, nail, or otherpointed tool (C) mark the stud bytapping through the Drill Guide ateach printed center line betweenthe two nails. Carefully remove theDrill Guide. If the MANABLOCdoes not have a divider plate, goto step 13.

12. Marking port locations below adivider plate: Put the top nail in theDrill Guide (D) on the crossformed by the center line of thefirst port below the divider plateand the 1-5/8" measurement fromthe back of the stud. Tap the nailinto the stud to hold the drill guidein place. Push another nail (E)through th center line on the DrillGuide which corresponds to thebottom port of the MANABLOC.

Then place the nail at the point onthe stud where the bottom portcenter line intersects with the1-5/8" measurement. Tap the nailinto the stud to hold the drill guidein place. With a nail or awl (F), tapand mark the stud at each centerline between the two nails.

13. Carefully remove the Drill Guideand repeat the marking procedureon the adjacent stud.

14. Drill 3/4" holes through both studsat each marked location. Be sureto hold the drill level andperpendicular to the stud toprevent drilling holes at an angle.Remove any splinters or burrsmade during drilling.

15. Mark and drill any holes for mainwater supply and hot watersupply/return lines at this time.An 1-1/4" bit will provide adequateclearance for 3/4" or 1" tubing.The tubing shall enter and/or exitthe MANABLOC in a straight line

Drill 3/4" holesfor distributionlines; 1-1/4"holes forsupply lines.


so as not to induce bendingstress on the MANABLOC.Necessary elbows, couplings,and tees are allowed in the mainwater supply lines.

16. Reattach the MANABLOC to themounting straps.

When the MANABLOC isinstalled prior to wall finishingoperations, the unit MUST be

protected from paint, texturecompounds and drywall dust.

NOTE: The wall in which theMANABLOC is to be mounted mustbe accessible from both sides duringinstallation to use the MBB2Mounting Straps.

5.2 Mounting TheMANABLOC WithoutUse Of MBB2 Straps

If not using the MBB2 MountingStraps, this procedure applies:

1. Cut two pieces of lumber (1 x 4 - or3/4" plywood - about 3-1/2" wide) toa length which provides a snug fitBETWEEN two studs.

2. The top of the MANABLOC shouldbe between 4 ft. and 6 ft. from thefloor (but may be at any heightprovided that it maintainsaccessibility to all of the ports onthe MANABLOC).

Make a mark near the back of theinside of one stud which wouldrepresent the top of theMANABLOC.

With a framing square or level,transfer the mark to the inside backof the other stud.

a thickness of 1-1/2" and about3-1/2" wide on the left and rightsides of the mounting base andrunning the full-length of theMANABLOC (see illustration,step 4.5). The 2 x 4s will be used tosecure the distribution lines at thecorrect height as they exit theMANABLOC.

3. Attach the mounting base to thestructure in a suitable location(see page 4). The base should bemounted so the top of theMANABLOC is between 4 feet and6 feet from the floor but may be atany height provided that the heightmaintains accessibility to all theports on the MANABLOC.

4. The mounting base must be firmlyattached to a structure solidenough to support, at a minimum,the weight of the MANABLOC filledwith water. The base should besquare and level.

5. Center the MANABLOC on thebase both vertically andhorizontally as shown here.Attach the MANABLOC to themounting base with four 1/2" orlonger drywall or wood screwsthrough the holes in the plasticbrackets on the MANABLOC.

6. As the distribution lines areconnected to the MANABLOC (seesection 6), ensure that the tubingexits the unit at a 90 degree angleto the centerline of the MANABLOCso as not to induce bending stresson the MANABLOC.

3. ATTACHING THE MANABLOCBETWEEN THE STUDS:

A. Measure the total length of theMANABLOC.

B. Attach the first (UPPER) 1 x 4inside and flush to the back of thestuds (see TOP VIEW) at a heightwhere the center of its width iscentered on the marks from step 2.

C. Attach the remaining (LOWER)1 x 4 inside and flush to the back ofthe studs at a distance below theupper 1 x 4 that is equal to thelength of the MANABLOC (step 7A)when measured from the top of theupper 1 x 4 to the bottom of thelower 1 x 4. See FRONT VIEWillustration.

4. CENTER THE MANABLOC IN THESTUD CAVITY: Attach theMANABLOC to the 1 x 4s with four1/2" - 3/4" drywall.

5. Refer back to section 5, step 5.1 tofinish installation.

5.3 Surface Mounting TheMANABLOC

1. A suitable base for the MANABLOCcan be constructed from a sectionof 1/2" or thicker plywood that is aminimum 22-1/2" wide and slightlylonger than the overall length of theMANABLOC.

2. Securely attach a length of 2 x 4, orother suitable framing material with


7. When attaching the distribution linetubing to the 2 x 4 supports, besure to use appropriately-sizedViega tubing clamps (For example,use stock code 52 000 for 3/8"tubing and stock code 52 020for 1/2" tubing).

Use one clamp per tube to ensurethat the tubing is held securely.Clamps shall be positioned NOFURTHER than six (6) inches fromthe end of the port. DO NOT pulltubing tight. Leave at least 7" ofslack per 50' of tubing run.


coiled tubing. If kinking or cuttingshould occur, these sections mustbe cut out and a coupling installed.

4. For the best results, connect thedistribution lines to fixtures and theMANABLOC immediately uponinstallation, and label the end-usefixture on the MANABLOC coverplate next to the port.

Self-adhesive labels are supplied withthe MANABLOC. Tubes pulled as abundle, or those not connectedimmediately, should be marked at bothends with a permanent markerdesignating the fixture supplied.

5. Since plumbing fixtures aregenerally located in groups, andthere may be several ViegaPEXdistribution lines running toapproximately the same location, itis easiest to run these distributionlines bundled together.

Hot and cold lines may be run inthe same bundle. For a neatappearance, bundles can be tiedwith nylon ties (Stock CodeHB14120 or HBPT) or plasticstrapping at regular intervals.

NOTE: Bundles shall be sufficientlytied for tubing support but shallNOT restrict tubing expansion andcontraction caused by temperaturevariations.

CAUTION: DO NOT USEDUCT TAPE FOR BUNDLING.Duct tape will not permit

tubing movement.

6. INSTALLING DISTRIBUTION LINES

6.1 Installing DistributionLines

Distribution lines should be runcontinuously in the most direct routefrom the MANABLOC to the fixtures.

A distribution line may contain acoupling or other fitting for purposessuch as repairing a damaged sectionof tubing, handling a change ofdirection which cannot be madewithin the minimum bend radiusguidelines, accommodating a fixturelocation change which requires alonger line, or to supply a low-demand accessory (i.e., ice maker).However, several pieces of shortertubing should not be connected withfittings for the purpose of using upleftover lengths of tubing.

NOTE: It is the responsibility of theinstaller to ensure that furtherconstruction, finishing and othermechanical system installations donot compromise the MANABLOCplumbing system as installedaccording to these instructions.

1. The tubing coils are usually placedat the MANABLOC location andtubing is pulled to the fixturethrough stud cavities, holes drilledoverhead in floor joists, etc. Severaltubes may be pulled at one time.Viega’s color coded ViegaPEXtubing will help prevent cross-connections.

2. Tubing should not be pulled tightlyand some slack (typically, 7" per50') is necessary to accommodateexpansion and contraction. Leaveenough excess tubing at thebeginning and end of runs to makeconnections without putting strainon the tubing.

3. Care should be exercised whenpulling PEX tubing to preventcutting or abrading. Care also mustbe taken to prevent kinking of the

6. Bundles may be supported withhangers designed for largertubing sizes.

7. The HB14120 or HBPT can beused to support PEX linesdirectly fromwooden framingmembers.

Other plastic cableties capable ofsupporting theweight of the tubeor bundle whenfilled with watercan also be used.

8. Holes drilledthrough studs, joists,plates, headers, etc.must be large enoughto accommodate tubing bundleswithout binding, to allow freemovement. Several smaller holes(accommodating a few lines each)may be preferable to drilling abundle-size hole. In no case shouldthe hole size exceed building codeguidelines, as this could weakenthe structural support members.

For more detailed instructions, refer toPureFlow Installation Guide, section 7.

6.2 Connecting DistributionLines to the MANABLOC

PEX Press, PEX Crimp, andCompression connections areavailable and included with theMANABLOC, except Supplyconnections which must be orderedseparately.

UNDER NOCIRCUMSTANCESshall any form of thread

sealant (Teflon® paste, pipe dope) beused on the distribution lineconnections. The carriers present inthese compounds can crack theplastic port connections, resulting inleaks and water damage.


6.2.1 CompressionConnections(3/8" & 1/2" ports)

THE WATER SUPPLY TO THEMANABLOC SHALL BE TURNED OFFWHILE MAKING DISTRIBUTION LINECONNECTIONS.

NOTE: The red caps on theMANABLOC designate hot ports, theblue caps designate cold ports. Makesure the distribution lines are beingconnected to the correct ports (hot orcold). The use of color codedViegaPEX tubing also reduces thepossibility of cross connections.

1. For each distribution line, slide theLock-In compression nut (A), Lock-In insert (B) and the plastic ferrule(C) onto the tubing in that order.See illustration below.

The long taper of a 3/8" ferrule (C)must be TOWARD THE END OF THETUBE; a 1/2" ferrule is symmetricaland may be installed facing eitherdirection. Insert the stainless steelstiffener (D) COMPLETELY into theend of the tubing.

WARNING: DO NOT attemptto install the Lock-In insertbackwards as breakage may

result. ALWAYS insert the long portionof the insert sleeve over the tube first.

DO NOT attempt to use or reuseinserts that are defective, cracked,broken or otherwise damaged, asconnection failure will result.

2. Push the tubing into the port socket(E) until it bottoms out.

E D C B A

Holding the tube so that it does notback out of the fitting, slide thewhite Lock-In insert and ferrulesnugly against the chamfer insidethe port socket.

While holding the tube against thebottom of the socket, thread the Lock-In compression nut onto the port andtighten hand-tight.

3. While holding the tube securely toprevent turning, finish tightening thenut with the MANABLOC Wrench(Viega Part No. MW1) until thewhite Lock-In insert appearsbetween the lugs and becomesflush with the ends of the lugs, plus1/4 to 1/2 turn.

Complete the connection as soon aseach distribution line is connected tothe MANABLOC.

WARNING: DO NOT useslip-joint pliers to tighten theLock-In nuts. Use the MW1

MANABLOC Wrench to tighten thecompression connections.

4. After all connections are complete,recheck that all of the Lock-Ininserts are visible between the lugsand are flush or protruding slightlybeyond the lugs.

5. As the distribution lines areconnected to the MANABLOC, theyshould immediately be labeled onthe cover plate as to which fixturethat line supplies.

Fixture labels are included with eachMANABLOC. Affix the appropriatelabel to the cover plate next to theport.

Each valve should beturned to the open

position after completingeach connection.

LUG

COMPRESSIONCONNECTION CAUTIONThis plumbing system relies

upon the proper tightening ofdistribution line compressionconnections.

Failure to properly complete ALLconnections will result in failure.Incomplete or improper connectionscan hold pressure during a systemtest but will fail at a later date,resulting in water damage.

DO NOT OVERTIGHTEN.Compression fittings can beOVER TIGHTENED.

Overtightening of the Lock-Incompression nuts may cause damageto the tubing, nut, valve or fitting body.DO NOT tighten Lock-In nuts beyondthe recommendation of theseinstructions (Step 3).

6.2.2 PEX Press Connections(1/2" ports)

THE WATER SUPPLY TO THEMANABLOC AND THE PORT VALVESSHALL BE TURNED OFF BEFOREATTEMPTING INSTALLATION OFPRESS ADAPTERS.

CAUTIONUse only sealing elementssupplied with the adapters.

1. Slide the supplied swivel nut (D)and a press sleeve (C) 61000 for3/8" tubing; 61020 for 1/2" onto thetubing (threads of the nut towardthe end of the tubing).

Insert the barbed end of the fitting (B)fully into the end of the tubing asshown.


2. Check full tubing insertion at viewhole of sleeve, then press thesleeve with an appropriately sizedpress tool. See section 5 from thePureFlow installation manual forpressing instructions.

DO NOT PRESS TWICE.

3. Insuring sealing element (A) is inplace, insert the fitting into thedesired port until the fitting flangesets flush with the end of the port.

4. Slide the swivel nut (D) over thepress sleeve (C) and thread the nutonto the MANABLOC port, handtighten only.

5. Open the port valve(s) beforeturning on the main water supply.

6.2.3 PEX Crimp Connections(1/2" ports)

THE WATER SUPPLY TO THEMANABLOC AND THE PORT VALVESSHALL BE TURNED OFF BEFOREATTEMPTING INSTALLATION OFCRIMP ADAPTERS.


1. Slide the supplied swivel nut (D)and a crimp ring (C) XLCR2 for 3/8"tubing; XLCR3 for 1/2" onto thetubing (threads of the nut towardthe end of the tubing).

Insert the barbed end of the fitting (B)fully into the end of the tubing asshown.

2. Insuring sealing element (A) is inplace, insert the fitting into thedesired port until the fitting flangesets flush with the end of the port.

3. Slide the crimp ring (C) to within1/8" to 1/4" from the end of tube.Crimp the ring with an appropriatelysized full-circle crimp tool.

See section 6 from the PureFlowinstallation manual for crimpinginstructions.

DO NOT CRIMP TWICE.

4. Slide the swivel nut (D) over thecrimped ring (C) and thread the nutonto the MANABLOC port, handtighten only.

5. Open the port valve(s) beforeturning on the main water supply.

6.2.4 Crimp Connection(3/8" ports)

THE WATER SUPPLY TO THEMANABLOC AND THE PORT VALVESSHALL BE TURNED OFF BEFOREATTEMPTING INSTALLATION OFCRIMP ADAPTERS.

This connection is for when youneed to convert a 3/8" compressionport to 1/2" PEX using a crimpconnection.


1. Wet the sealing element (A) withtap water or silicone lubricant only.DO NOT USE Vaseline®, grease,oil, or any other lubricant. Use ofpetroleum-based lubricant cancause cracking of the plastic andresult in a leak. Place the sealingelement against the flange of thebrass adapter (B) the end of thetubing.


WATER CLOSET CONNECTIONS

Tighten fixture nut hand tight plusan additional 1/4 turn. Check allconnections for leaks.

DO NOT OVERTIGHTEN.

Hose bibbs supported by thestructure can be connected directly.

HOSE BIBB CONNECTIONS

Free standing hose bibbs shall not be supported by ViegaPEX.

Well-anchoreddrop-ear !ttings or metal pipe shall beused to installhose bibbs.

RISER CONNECTIONS

FAUCET CONNECTIONSLAV or KITCHEN

Thread fixture nut onto fixtureshank. Tighten fixture nut handtight plus an additional 1/2 turn.Slide compression nut andsupplied plastic ferrule over tubeas shown. The long taper of theferrule goes towards valve.Tighten compression nutaccording to valve manufacturer’srecommendations.

Tighten fixture nut hand tight plusan additional 1/4 turn. Check allconnections for leaks.

DO NOT OVERTIGHTEN.

2. Slide a crimp ring (C) - XLCR2 for3/8" tubing; XLCR3 for 1/2" - andthe supplied swivel nut (D) onto thetubing (threads of the nut towardthe end of the tubing).

Insert the brass adapter (B) fully intothe end of the tubing as shown.

3. Slide the swivel nut (D) back tobrass adapter and slide the crimpring (C) to within 1/8" to 1/4" fromthe end of tube. Crimp the ring withan appropriately sized full-circlecrimp tool.

DO NOT CRIMP TWICE.

4. With the sealing element still inplace, thread the nut onto theMANABLOC port and tighten handtight plus NO MORE THAN 1/8 turnadditional.

6.3 Connecting Distribution

Place thewet sealingelement(A)...

...against thebrass adapterflange (B).

(A) (B)

6.4 Water Supply Connections

The main water supply shall be turnedoff before making water supplyconnections.

The MANABLOC water supplyconnection uses a special 1" swivelMANABLOC transition fitting whichseals with a rubber washer.

This connection is used on the coldwater supply and the hot watersupply/return lines. This connection tothe MANABLOC does not require anyform of thread sealant and none shallbe used.

DO NOT USE ANY FORM OFTHREAD SEALANT TO MAKE THISCONNECTION.

NOTE: Water Service connections toadapt to any type of plumbing supplymaterials are available. Consult theViega Product Catalog for a completelisting of available connections.

1. Connect water service adapters towater supply piping beforeattaching the swivel fitting to theMANABLOC (instructions includedwith adapters.) Excessive forcefrom threaded fittings, or solventsfrom solvent welding (PVC orCPVC) will cause damage to theMANABLOC.

Drill all holes in wood members forwater supply/return tubing BEFOREmounting the MANABLOC.

2. When using male or female pipethread transition fittings, use onlyTeflon® TAPE to seal pipe threads.DO NOT use pipe dopes, threadsealers, Teflon® pastes, etc.

3. If copper sweat fittings are usedanywhere in the MANABLOC water


supply line or water heatersupply/return lines, these fittingsmust be soldered, cooled, andflushed of any flux residue beforethese lines are connected to theMANABLOC.

Soldering creates a tremendousamount of heat which could meltthe MANABLOC, and solder fluxcontains strong acids and may alsocontain petroleum products.

These compounds can attack theplastic materials from which theMANABLOC is made and causecrazing, cracking and failure of theMANABLOC, resulting in leaks andwater damage.

4. Ensure that the hot/cold supplylines are connected to the correctsupply inlet/outlet on theMANABLOC. Red valves designatehot ports, blue valves designatecold ports.

5. Supply lines shall enter and/or exitthe MANABLOC in a straight line. Ifbending of the supply lines isrequired, the tubing must beanchored to a framing member toisolate the bend stress from theMANABLOC or use adirectional fitting.

6. After the supply tubing has beenconnected to the transition fitting,place the rubber washer onto theswivel adapter, remove the plasticprotective cap from theMANABLOC fitting and thread theswivel nut onto the threaded maleadapter by hand. DO NOT CROSSTHREAD.

7. Tightening the swivel connectionson the inlet/outlet ports:

a. PEX Press, tighten the 1" swivelnut hand tight only.

b. PEX Crimp, tighten the 1" swivelnut hand-tight, then a quarter ofa turn with channel locks. DONOT OVERTIGHTEN. Excessiveforce could damage theMANABLOC. Repeat for allremaining supply lineconnections.

DO NOT ELECTRICALLYGROUND TO THISSYSTEM.

Fitting Body

RubberWasher

SwivelNut

PEX CrimpFitting Body

SealingElement

SwivelNut

PEX Press

P


7. FILLING AND TESTING

1. Upon completion of the installation,the system should be filled andhydrostatically tested. Use onlyPOTABLE water for testing.

WATER TESTING SHALLBE AVOIDED DURINGFREEZINGCONDITIONS.

UNDER NO CIRCUMSTANCESSHALL THE SYSTEM BE TESTED ATTEMPERATURES LOWER THAN10˚F (-12˚C).

2. Open all connected port valvesbefore filling the system with wateror air and pressurizing. If theMANABLOC is filled and pressurizedbefore the port valves have beenopened, read the following notice:

3. Hydrostatic testing of theMANABLOC plumbing system is tobe conducted according to localcode requirements. In the absenceof local codes, test pressure shall beat least the expected workingpressure of the system, but not lessthan 40 psi nor greater than 225 psi.

NOTE: Some plumbing fixtures maynot withstand test pressures greaterthan 80 psi. Consult fixturemanufacturers instructions for pressurelimitations or plug all distribution linesat the fixture end. The system shall, ata minimum, withstand the testpressure, without leaking, for a periodof 15 minutes.

WARNING! PRESSURESUSED IN TESTING CANBLOW UNMADE ORINCOMPLETE

CONNECTIONS APART WITHTREMENDOUS FORCE!

This force is many times greater whenair is used as a test medium. To reducethe risk of personal injury, ensure thatall connections are completed beforetesting. Use only the pressure and timerequired to determine that the systemis leak free.

4. Fluid testing the MANABLOC systemat temperatures below freezing (lessthen 32˚F, 0˚C) may be performedusing a solution of water and NON-TOXIC antifreeze such as propyleneglycol (typically called RV antifreeze).

If such a solution is used, theantifreeze solution must besufficiently concentrated towithstand the lowest temperatureencountered while the testing fluid isin the system. Antifreeze solutionsshould be purged and the systemflushed with potable water prior toconsumer use.

The water heater shall beisolated and not includedin the system air test.

5. Air pressure testing of a MANABLOCis acceptable and preferred tohydrostatic testing in areas wherecold weather could freeze thesystem or where water is notavailable. MANABLOC valves shallbe in the open position during thetest, which shall utilize a pressure ofnot less than 40 psi and not greaterthan 100 psi. The system shall betested for a minimum of 15 minutesbut no longer than 1 hour. Duringthe test, system pressure shall dropno more than 8 psi in the one hourperiod.

If the pressure in the systemdeclines more than 8 psi during theminimum 15 minute period,repressurize the system to theoriginal test pressure, and retest.*

If the system pressure declinesmore than 8 psi again during thetest period, test the distribution linetest caps or any other fittings in thesystem with the approved leakdetection solution. (Any connectionfound to be in question must bereplaced or remade and thepressure test repeated.)

If the solution does not show a leakon any of the caps or fittings, isolatethe MANABLOC by turning thevalves to the "OFF" position,repressurize if needed, and applythe same solution to theMANABLOC manifold components.

For leak detection, use only amixture of Original PalmoliveGreen™ dishwashing soap (#46100-46200) or Palmolive Ultra™(#356140 or 46128) mixed withpotable water at a ratio of 2 ouncesof soap to one gallon of water (mixUltra at a ratio of 1.5 ounces pergallon.)

*During the initial test pressurizationperiod, the system pressure indicatedon the gauge may decrease due to theinitial deformation of the pipe, followed

NOTICE - VALVEINFORMATION!Opening a port valve toan empty or

unpressurized distribution line maycause valve damage.

To prevent potential valve damageor failure, open the port valvesbefore filling and pressurizing thelines. The force of water rushing tofill an empty line can cause thevalve’s sealing to "clip off",resulting in incomplete sealing orcomplete valve failure.

CARE must be exercised whenopening a port valve to an emptyor unpressurized line. The fixture towhich the line is connected shouldbe in the OFF position and thevalve must be opened slowly untilwater starts to flow into the line.

DO NOT CONTINUE to open thevalve until the line is full andpressurized. Open the valve fullyonly after the line is up to systempressure. The fixture can then beopened to purge the line of air.

Valve stems are replaceable. OrderStock Code MBRS4.


by slow expansion. The pressure dropis dependent on ambient temperature,system capacity, and test pressure butshall not be more than 8 psi in an hour.

Test shall be conductedwhen significant changes totemperature are notexpected. Please note

significant changes in ambienttemperature also can affect systempressure.

6. Due to the normal contraction of theMANABLOC in extremely coldweather, the tie rods may appearloose. This is normal. DO NOTtamper with the tie rods, they arefactory pre-set.

DO NOT ALLOW FLUIDSTO FREEZE IN THEMANABLOC SYSTEM!Fluids freezing in the

MANABLOC will damage the unit.

WATER (NOT ANTIFREEZESOLUTION) MUST BEPURGED OR DRAINEDFROM THE SYSTEM IF

TEMPERATURES ARE EXPECTED TOFALL BELOW FREEZING (32˚F, 0˚C).Low pressure compressed air can beused for purging.

FOLLOW ANTIFREEZEMANUFACTURERSINSTRUCTIONS FORCONCENTRATIONS. USE

ONLY NON-TOXIC ANTIFREEZEAPPROVED FOR USE IN DRINKINGWATER SYSTEMS.


8. SYSTEM DISINFECTION

8.1 General

Local codes may require system disinfection. When no other method is available, follow the time limitations and exposure levelsshow below

1. Use a chlorine solution and one of the exposure durations listed below:

2. Mix the disinfection solution thoroughly before adding it to the system.

3. The chlorine solution must reach all parts of the system. Open all fixtures (both sides) and flow water until achlorine smell is present. As an alternative, chlorine test tablets can be used to detect chlorine at each fixture.

4. The chlorine source for the solution can be, but is not limited to, the following:

5. After the solution has been in the system for the time required by the Authority Having Jurisdiction or theexposure durations listed in step 1 above, the system shall be flushed completely with potable water.

6. The system must be purged or drained of all water or protected from freezing.

Concentration Period Authority

200 PPM 3 hours IPC/UPC®

50 PPM 24 hours IPC/UPC®

Chlorine Source % Active Chlorine Form Amount Per 100 Gallon Waterfor a 200 PPM solution

Laundry bleach 5.25 Liquid 3 pints (48 oz.)

FAILURE TO FLUSH THE SYSTEM NOTICE!To prevent reduced service life of system components, disinfection solutions shall not beallowed to stand in the system longer than 24 hours. Thoroughly flush the system withpotable water after disinfection.


NOTES

Rely on Viega for the most complete line of hightech/high quality plumbing, heating and snow meltingsystems available today… plus the most comprehensivecustomer field support in the industry.

Dedicated to education, Viega has been recognized byindustry professionals as offering some of the mostinnovative, informative and interactive training courses.We have a comprehensive list of sessions in a variety offorms from half day workshops to rigorous three-dayprograms. Call to receive our complete course catalog.

Viega LLC301 N. Main, Floor 9, Wichita, KS 67202

Phone: 1-877-VIEGA-NA Fax: 1-800-976-9817www.viega-na.com [email protected]

Viega IM-PFMB-1007

ProPress®SystemFlameless

copper joiningtechnology.

ProPressG™SystemFlamelesscopper fuelgas joiningtechnology.

PureFlow®Systems

FlexiblePEX tubingplumbing

technology.

ProRadiantSystemsComfortable,

efficient heatingtechnology.

S-no-Ice®SystemSnow andice meltingtechnology.

Professional products,service and training forprofessional contractors

InstallationManuals3.supplyhouse.com/product_files/viega-36043-install-instructions.pdf1.1Viega...

Documents

Transcript of InstallationManuals3.supplyhouse.com/product_files/viega-36043-install-instructions.pdf1.1Viega...