ZURN PEX Manuale utente

ZURN PEX

Residential Fire Protection Systems

Installation Guide

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Table Of Contents

Section Page No.

Section I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Intended Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Standards, Ratings, and Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Types of Multipurpose Fire Protection Systems . . . . . . . . . . . . . . . . . . . . . . . 3

Section II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Product Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Zurn PEX CR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Zurn PEX XL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Section III . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14

Making Crimp Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Making The Connection With The Medium QickClamp™Tool . . . . . . . . . . . . . 7-8

Adjusting The Medium QickClamp™Crimp Tool . . . . . . . . . . . . . . . . . . . . . . . 8

Copper Crimp Ring System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Making The Connection With The Medium Crimp Tool . . . . . . . . . . . . . . . . . . 9-10

Making The Connection With The Large Crimp Tool . . . . . . . . . . . . . . . . . . . . 10-11

Using The Zurn Go/No-Go Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Adjusting The Medium Crimp Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Adjusting The Large Crimp Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Section IV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-19

Tubing Supports and Fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Uncoiling Zurn PEX Tubing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Supporting Zurn PEX Distribution Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-19

Section V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Sprinkler Adapter Fittings

Section VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Testing

Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-23

Table 1: Pressure Drop for Zurn PEX Tube - psi/foot . . . . . . . . . . . . . . . . . . . . 22

Table 2: Fitting Equivalent Length (feet of tube) . . . . . . . . . . . . . . . . . . . . . . . 23

Zurn PEX®Residential Fire Protection

Addendum to Plumbing Installation Guide

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Zurn Pex Fire Protection Systems Installation Guide

Zurn PEX®Residential Fire Protection

Addendum To Plumbing Installation Guide

Note: This manual is an addendum to the Zurn PEX®Plumbing Installation Guide

and Zurn PEX®Commercial Plumbing Manual. Its purpose is to provide customers

with additional information relevant to Residential Fire Protection Systems.

Section I

System Overview

Zurn PEX offers multipurpose fire protection systems as described by the National

Fire ProtectionAssociation 13D standard (NFPA 13D).A multipurpose system is often

referred to as a combination system because the tubing serves the needs of both the

cold domestic water distribution and fire protection system.These types of systems

provide an array of benefits including:

• Lower cost than traditional “stand-alone” fire protection systems

• Provides confirmation that the system is working each time cold domestic

water is used

• No stagnant water eliminates need for backflow preventers

• Both domestic water and fire systems can be installed by same contractor

• Utilizes flexible PEX tubing that provides fewer connections

• Zurn PEX systems resistant to freeze damage

Intended Purpose

Zurn PEX Fire Protection Systems are intended to be used in product combinations

tested by NSF International to UL 1821.To our knowledge, Zurn PEX products have

only been tested with other Zurn PEX products and are not intended to be used with

any other manufacturer’s products.

Zurn PEX Fire Protection Systems are UL 1821 listed to be installed when protected

by any of the constructions referenced below:

1. 3/8" [9.5 mm] thick or thicker gypsum wallboard; or

2. A suspended membrane ceiling with lay-in panels or tiles having a weight of not

less than 0.35 lb/ft2[1.76 kg/m2] when installed with metallic support grids; or

3. One layer of 1/2" [12.7 mm] plywood or plywood soffits.

The tubing and fittings are intended for use in multipurpose systems without a fire

department connection.

The tubing and fittings are intended to be used in areas where the ambient

temperature does not exceed 120°F.

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Zurn Pex Fire Protection Systems Installation Guide

Standards, Ratings, and Certifications

Zurn PEX tubing, fittings, copper crimp ring, and QickClamp™systems are UL 1821

listed for use in multipurpose systems as described in NFPA 13D.

Zurn PEX products are manufactured in accordance with ASTM F876,ASTM F877,

ASTM F1807,ASTM F2159, and CSA B137.5 standards and are listed by NSF

International as such.

Zurn PEX products are listed to NSF International Standards 14 and 61.

Zurn PEX systems carry the following pressure and temperature ratings:

160 psi at 73°F

130 psi at 120°F (Fire Protection Rating)

100 psi at 180°F

80 psi at 200°F

Types of Multipurpose Fire Protection Systems

There are three types of multipurpose systems as described in NFPA 13D-Standard

for the Installation of Sprinkler Systems in One and Two Family Dwellings and Manu-

factured Homes.A multipurpose fire protection system can be installed in accordance

with any of these three systems or a combination of each in accordance with NFPA 13D.

Gridded

This system is set up as a grid and is the preferred system type

of Zurn PEX because it is the simplest design and provides some of

the best hydraulic characteristics.A sprinkler is supplied with water

from both sides, while other branch lines help transfer water.

Looped

In this system, the outer sprinklers on the perimeter of the floor

level are connected in a loop so they are supplied with water from

both sides. Sprinklers within the loop are supplied with branch tee

connections off the loop.

Straight

In this system, the sprinkler is supplied with water in only one direction.The hydraulic

calculations are not very good; therefore, this is not a very popular design method.

System Design

Design of a residential fire protection system shall be in accordance with all require-

ments of the NFPA 13D standard. Prior to installation, construction plans including

the sprinkler head locations and piping layout, as well as the hydraulic demand data,

should be submitted to the local authority having jurisdiction for approval.Any deviations

or changes in the plans after approval shall have permission by the same authority.

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Zurn Pex Fire Protection Systems Installation Guide

Section II

Product Descriptions

Sprinklers

Only sprinklers listed in accordance with NSF 61 can be used in Zurn PEX multi-

purpose systems. In addition, the sprinkler must meet the requirements of NFPA 13D,

specifically UL 1626 – Residential Sprinklers for Fire Protection Service.

Residential sprinklers operate under various temperatures ranging from 150°F to

175°F.In addition, all sprinklers vary in their specific K-value, wetting density

capability, flow volume, and operating pressure at a specified design coverage area.

There are sprinklers available for all types of situations and it is up to the designer

to specify the appropriate sprinkler and its operating conditions.

Do not store sprinklers, sprinkler cover plates, or sprinkler accessories in areas that

may experience excessive heat over 100°F.

Concealed Sprinklers

These sprinklers are flush against the ceiling and are covered with a special

cover plate. In operation, the plate falls off at approximately 135°F and as the

heat increases the sprinkler operates. It is important to never paint over the

special cap. It may interfere with the operation of the sprinkler.

Recessed Pendent Sprinklers

These sprinklers are visible on the ceiling and do not have a cover plate. In operation,

high heat in the range of 150°F to 175°F will cause the sprinkler to operate.

Recessed Horizontal Sidewall Sprinklers

These sprinklers are visible on the wall and do not have a cover plate. In operation,

high heat in the range of 150°F to 175°F will cause the sprinkler to operate.

Tubing

UV Resistance – 6 months, please see precautions below.

Chlorine Resistance – 5006 designation, generally a continuously circulating hot

water plumbing loop.

Sizes up to and including 1" meet the 25/50 flame spread/smoke developed require-

ment in general accordance with UL733/ASTM E84 and is suitable for use in plenums.

Sizes greater than 1" meet the 25/50 flame spread/smoke developed requirement in

general accordance with UL733/ASTM E84 when wrapped with 1/2" thick fiberglass

insulation that is ASTM E84 listed and is suitable for use in plenums.

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Zurn Pex Fire Protection Systems Installation Guide

Zurn PEX Tubing Installation Precautions

• Zurn PEX tubing should not be exposed to or stored in direct UV light.When possible,

protect the tubing with an opaque covering.

• Zurn PEX tubing should not be exposed to a direct flame. Braze,solder,or weld

and allow to cool prior to connecting Zurn PEX to metal pipe.

• Zurn PEX should never be used for electrical grounding. Consult the NEC for

recommended grounding methods when PEX is used.

• Do not install Zurn PEX tubing within 24 inches of air return grills or other opening

in the ceiling.

• Zurn PEX should not be installed in conditions near extreme heat.

• Painting Zurn PEX is unnecessary.Water-based latex or acrylic paints will not

affect Zurn PEX tubing; however, oil-based paints or lacquers should never be

applied to Zurn PEX tubing.

• Zurn PEX should only be installed in operating conditions that are consistent with

pressure and temperature ratings that appear on the tubing and applicable standards.

• Zurn PEX should not be subjected to prolonged exposure to free chlorine concen-

trations greater than 4 ppm.

• Zurn PEX tubing that has been crushed or scratched should be removed from the

system and replaced.

• Zurn PEX should never come into contact with any chemicals, pipe thread

compounds, putty, mineral, or linseed oil products.

Zurn PEX CR

Zurn PEX CR plastic fittings are molded from

a blend of highly engineered polymers.The

inherent qualities of the polymers make

Zurn PEX CR fittings highly resistant to

chlorine and other chemicals present in

potable water.

Zurn PEX CR Installation Precautions

• Zurn PEX CR fittings should only be used in operating conditions that are

consistent with the temperature and pressure ratings of the tube as well

as applicable standards.

• Zurn PEX CR fittings should not be painted.

• Zurn PEX CR fittings should not be exposed to direct UV light.When possible,

protect fittings with an opaque covering.

• Zurn PEX CR male pipe threads must only use PTFE tape as a thread sealant.

• Zurn PEX CR fittings should not be exposed to cleaners, chemicals, solvents,

sealants, or glues as they could be damaged from contact.

• Zurn PEX CR fittings should always be stored in clean bins or containers,

preferably in the original packaging.

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Zurn Pex Fire Protection Systems Installation Guide

Zurn PEX XL

Zurn PEX XL brass fittings have a 30-year

track record of reliability.With over 230

million fittings in service nationwide, the

Zurn PEX XL fitting system is the most

widely used system in the industry.

Zurn PEX XL Installation Precautions

• Zurn PEX XL fittings should only be used in operating conditions that are

consistent with the temperature and pressure ratings of the tube as well as

applicable standards.

• Zurn PEX XL fittings should not be used in reverse osmosis systems.

• Zurn PEX XL fittings should not be used in areas with known localized aggressive

water chemistries.

Section III

Making Crimp Connections

Cold Weather Installation Connections

Crimps are intended to be made in general working temperatures above 32°F.

However, in extreme temperatures down to 0°F, we recommend more frequent

gauging to ensure in specification crimps are being made.

Zurn PEX offers two different clamp fitting systems for the installation of multipurpose

fire protection systems: the QickClamp™and Copper Crimp Ring.To choose the

clamp system most appropriate for your installation, consider factors relative to

your jobsite priorities.

QickClamp™System

• Patent-pending technology

• One tool system

• Available in 3/8", 1/2",3/4", and 1" sizes

• Go Gauge

• 25-year system warranty

Listings

By NSF International as meeting the following standards:

ASTM F877

CAN/CSA B137.5

NSF Standard 14

Important: The QickClamp™cannot be used with Zurn PEX transitional fittings which

are used to transition from polybutylene to PEX.

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Zurn Pex Fire Protection Systems Installation Guide

1) Measure and cut the tube. Be sure you have a square,

burr-free cut.An uneven or jagged cut may cause an

improper connection.

2) Push tubing into the QickClamp

until the tubing stops at locating

fingers. Do not force the tubing

to bottom out in the QickClamp.

Some tubing should be visible in

the sight hole. Be sure that the

tab inside the QickClamp stays

on the outside of the tubing.

3) Push fitting into the tubing until the fitting shoulder

touches the locating fingers on the QickClamp.

4) Open the QickClamp Medium Crimp Tool* and pull the middle

handle down. Hold the tool in one hand with your thumb over

the middle handle and your fingers around the bottom handle.

Place the jaws completely over the QickClamp pinch ear.

Important: Be sure the tool jaws cover the entire ear of

the QickClamp before crimping; failure to do so will result

in an improper crimp and may void the warranty.

5) With the tool at a 90º angle to the tube, close the middle

handle until it contacts the bottom handle.The ratchet will

lock the handles in place. Complete the crimp by removing

your thumb from the middle and squeezing the upper

and lower handles together. The ratchet will allow the

handle to open once the crimp is completed.

6) Open the QickClamp Medium Crimp Tool and remove it

from the QickClamp. If the entire ear didn’t crimp, do not

recrimp.The crimp ring must be cut out and replaced.

Making The Connection With The Medium QickClamp™Tool

Important: Using this tool for anything other than its intended purpose

voids the warranty.

Incorrect

Assembly

Correct

Assembly

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Zurn Pex Fire Protection Systems Installation Guide

7) Check a completed

connection with the

appropriate sized

section of the

QickClamp Go gauge.

Using the appropriate

slot on the gauge for

the fitting size, slide

the gauge onto the

crimped pinch ear. If

the QickClamp pinch ear does not go into the Go gauge, the fitting should be

cut out, the tool adjusted, and the fitting replaced. For tool adjustment,see

instructions supplied with tool.

Crimp Systems, continued

Adjusting The Medium QickClamp™Crimp Tool

The Zurn Medium QickClamp Crimp Tool is factory set to provide proper crimps.

This should be checked before use by making a test crimp connection and checking

it with the QickClamp Go Gauge.As long as the finished crimp connection gauges

properly,there is no need to adjust the tool.We recommend checking finished

crimp connections frequently with the Zurn QickClamp Go Gauge. As more crimp

connections are made, the QickClamp Tool will require adjustment. This can be

detected by the crimp diameter increasing and the completed crimp does not

gauge properly.

1) With the tool in the open position, remove the E-clip

using a screwdriver.

2) Slide the Adjustment Pin back about 1/4".

Warning: The Adjustment Pin must not be pulled or

pushed completely out. Rotate the Adjustment Pin until

the line on the the tool head points to the next higher

number on the pin. For example,to tighten the crimp

when tool is set to zero (0), adjust the pin to the

one (1) position.There are five total adjustments.

3) Push Adjustment Pin back in and reinstall the E-clip.

4) Apply light oil to the tool pivot points each time the tool

is adjusted. Failure to lubricate the tool will shorten the

tool’s life.

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Zurn Pex Fire Protection Systems Installation Guide

Copper Crimp Ring System

• Proven system for over 30 years

• Available in 3/8", 1/2", 5/8", 3/4", 1", and 1-1/4"

• Go/No-Go Gauge

• 25-year system warranty

Listings

By NSF International as meeting the following standards:

ASTM F877

ASTM F1807

CAN/CSA B137.5

NSF Standard 14

Making The Connection With The Medium Crimp Tool

Note:

Use the crimp tool only to install PEX tube/fitting systems meeting ASTM F1807

for brass or copper insert fittings and F2159 for plastic insert fittings.

Important: Always refer to the tube manufacturer’s product assembly

instructions when using the crimp tool.

1) Measure and cut the tube. Be sure you have a square burr-free

cut.An uneven or jagged cut may cause an improper connection.

2) Next, slip a copper crimp ring onto the tube.Do not use

hose clamps!

3) Now insert the fitting into the tube up to the fitting

shoulder. Position the crimp ring 1/8 inch to 1/4 inch

from the end of the tube.An improperly positioned ring

may produce a weak connection. Ring may be squeezed

to hold it in place until step 4 is completed.

4) Position jaws squarely around the ring. Release upper

handle to close jaws on the ring. Squeeze handles

together to complete the crimp.

1/8¨ to 1/4¨

Crimp Ring

Spacing

Fitting

Shoulder

Crimp Systems, continued

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