ZURN PEX Installation Instructions

2
Zurn PEX® Residential Fire Protection Addendum to Residential Plumbing Installation Guide (ZMKTG370-04)
This manual is an addendum to the Zurn PEX Residential Plumbing Installation Guide (ZMKTG370-04) and Zurn PEX Commercial Plumbing
and Layout Guide (ZMKTG370-60). Its purpose is to provide additional information relevant to using Zurn PEX systems in residential fire
protection systems.
System Overview
Zurn PEX oers multipurpose fire protection systems as described
by the National Fire Protection Association 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
• Water is constantly refreshed in the sprinkler piping, eliminating
the need for backflow preventers
• Both domestic water and fire systems can be installed by same
contractor, eliminating potential scheduling issues
• Utilizes flexible Zurn PEX tubing that provides fewer
connections, reducing the potential for leaks
• Zurn PEX systems resist freeze damage
INTENDED PURPOSE
Zurn PEX Fire Protection Systems are intended to be used in
product combinations tested by NSF International to UL 1821.
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:
• 3/8" [9.5 mm] thick or thicker gypsum wallboard; or
• A suspended membrane ceiling with lay-in panels or tiles
having a weight of not less than 0.35 lb/ft
2
[1.76 kg/m
2
] when
installed with metallic support grids; or
• One layer of 1/2" [12.7 mm] plywood or plywood sots.
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.
TABLE OF CONTENTS - BY SECTION
SYSTEM OVERVIEW 2
INTENDED PURPOSE 2
STANDARDS, RATINGS, AND CERTIFICATIONS 3
TYPES OF MULTIPURPOSE FIRE PROTECTION SYSTEMS 3
SYSTEM DESIGN 3
PRODUCT DESCRIPTIONS 3
SPRINKLERS 3
TUBING 4
QICK SERT CR® FITTING SYSTEM 4
ZURN PEX XL BRASS FITTING SYSTEM 4
MAKING CRIMP CONNECTIONS 5
COLD WEATHER INSTALLATION CONNECTIONS 5
COPPER CRIMP RING SYSTEM 5
MAKING THE CONNECTION WITH THE LARGE CRIMP TOOL 5
USING THE ZURN GO/NO-GO GAUGE 6
ADJUSTING THE LARGE CRIMP TOOL 6
LARGE DIAMETER COMPACT COPPER CRIMP TOOL OPERATING INSTRUCTIONS (QCRTLDM) 7
JAW INSTALLATION INSTRUCTIONS 7
TUBING INSTALLATION 8
TUBING SUPPORTS AND FITTING 8
UNCOILING ZURN PEX TUBING 8
SUPPORTING ZURN PEX DISTRIBUTION LINES 8
TUBING EXPANSION 9
BENDING ZURN PEX TUBING 9
METAL STUDS 9
INSULATING TUBING 9
NAILING PLATES 9
SPRINKLER ADAPTER FITTINGS 10
TESTING 10
APPENDIX 11
TABLE 1: PRESSURE DROP FOR ZURN PEX TUBE - PSI/FOOT 11
TABLE 2: FITTING EQUIVALENT LENGTH - FEET OF TUBE 11

ZURN PEX Specifications

General

Material	Crosslinked Polyethylene (PEX)
Application	Fire sprinkler systems
Standards	NFPA 13
Joining Method	Crimp
Sizes Available	1", 1 1/4", 1 1/2", 2"