Installation Guide P L U M B I N G
Plumbing Installation Guide published by MrPEX® Systems 2613 87th Court W. Northfield, MN 55057 800-716-3406 mrpexsystems.com info@mrpexsystems.com ©2015 MrPEX® Systems All rights reserved Printed November 2015 in the United States of America MrPEX® Systems has used reasonable efforts in collecting, preparing, and providing quality information and material in this guide. However, system enhancements may result in modification of features of specifications without notice.
TABLE OF CONTENTS INTRODUCTION TO MrPEX® 3 BEFORE YOU BEGIN 5 CHOOSING YOUR DESIGN & LAYOUT 9 MRPEX PEXa PLUMBING ADVANTAGES 10 HOW TO MAKE A FITTING 11 PRESS TOOL CALIBRATION 12 INSTALLATION GUIDELINES 13 INSTALLATION LIMITATIONS 14 FIXTURE SIZING CHART 15 LISTINGS & APPROVALS 16 PRESSURE DROP CHARTS 18 INSTALLATION DIAGRAMS 25 USING FIRESTOP 25 REPAIRING A KINK 27 LIMITED WARRANTY 2 1-800-716-3406 1
INTRODUCTION TO MrPEX® ABOUT MrPEX® SYSTEMS MrPEX® Systems is one of the leading North American system suppliers of residential and commercial radiant heating/cooling, snowmelt systems, and PEX-a domestic hot and cold water systems. With a very knowledgeable and experienced team, our company is on the fast track for growth in the USA and Canadian market.
BEFORE YOU BEGIN ABOUT THIS GUIDE The purpose of this guide is to assist the plumbing professional by providing specific information regarding the MrPEX® plumbing System. This installation guide is written with the understanding that a licensed plumber will be designing and installing all MrPEX System components and will help plan and perform a successful installation.
Before You Begin 4 DIAMETER COLOR LENGTH TYPE 1/2" 1/2" 1/2" 1/2" 3/4" 3/4" 3/4" 1" 1" 1" Red, Blue, White Red, Blue, White Red, Blue, White Red, Blue, White Red, Blue, White Red, Blue, White Red, Blue, White Red, Blue, White Red, Blue, White Red, Blue, White 100' 300' 500' 20' 100' 300' 20' 100' 300' 20' Coil Coil Coil Straight Coil Coil Straight Coil Coil Straight With all the system components that are offered, you have the freedom to choose what kind of potable plumbing system is going to be in
CHOOSING YOUR DESIGN & LAYOUT BRANCH AND TEE METHOD Dishwasher Refrigerator Choosing Your Design & Layout This system incorporates one set of main hot and cold lines with all the fixtures branching off of the main lines with flow through tee’s until the last fixture is reduced off the end of the line. Pros: Saves on tubing. No need to carry different multiport tee’s or manifolds to job. Cons: Pressures will vary downstream during the use of upstream fixtures.
HOME RUN METHOD This type of install incorporates a dedicated line or a set of lines to every fixture from your water heater. Dishwasher Refrigerator Choosing Your Design & Layout Pros: Less fittings are used. No need to carry many different fittings to the job. Pressures remain the same at all times. Large main lines are not needed to run throughout the building. If one line is ever compromised it is easy to isolate rather than shutting the whole system down.
COMBINATION METHOD Dishwasher Refrigerator Choosing Your Design & Layout This installation routes a set of main lines using multiport tee’s serving a cluster of fixtures, such as a bathroom, kitchen, or laundry room. Pros: Faster installation time, less fittings and tubing. Less pressure fluctuation. Cons: Hot water will take longer to get to furthest point.
COMBINATION METHOD WITH RECIRCULATION PUMP This installation routes a set of main lines using multiport tee’s serving a cluster of fixtures, such as a bathroom, kitchen, or laundry room. But hot side also continues back to the water heater allowing for a re-circ pump to deliver hot water quicker to the fixtures. Dishwasher Refrigerator Choosing Your Design & Layout Pros: Faster installation time, less fittings and tubing. Saves on water usage. No waiting for hot water at fixture.
MRPEX PEXa PLUMBING ADVANTAGES ŰŰ Flexibility – having the freedom to route around obstacles rather than using elbows. ŰŰ Long term durability – standard operating temperatures do not cause MrPEX® to turn brittle, melt or freeze. ŰŰ Quiet – PEX greatly reduces water hammering and also reduces Velocity noise. ŰŰ Price – PEX prices are more stable and less susceptible to market fluctuation as compared to copper.
HOW TO MAKE A FITTING CORRECT Cut PEX tubing square using a PEX cutter. How to make a fitting Place Stainless Steel Sleeve on the end of the tubing, making sure it is fully seated. Tubing must be seen in witness hole completely. Insert fitting into the tubing all the way to the shoulder. Position the tool jaws on the stainless steel sleeve, making sure it is centered. Close tool all the way. Once fitting is made, check with GO / NO GO gauge.
PRESS TOOL CALIBRATION Please follow procedure below: 1. Close the handles until the jaws meet, stop closing at the point that further pressure is required. 2. Measure the distance between the dots on the end of the handles. Press Tool CALIBRATION 3. If the tool has only one size press ¾” or less and does not have interchangeable press sizes then the length between the dots should be 7 ¾” +/- ¼”.
INSTALLATION GUIDELINES ŰŰ Support horizontal PEX tubing runs every 32” ŰŰ Support vertical PEX tubing runs every 48” ŰŰ All drilled penetrations shall be ¼” larger diameter than pipe ŰŰ For mason walls and metal studs use suitable grommets/sleeve that will protect the PEX from rubbing or wearing on the wall.
INSTALLATION LIMITATIONS ŰŰ Do not allow PEX tubing to freeze with water inside, especially in concrete as this will cause the concrete to crack and could potentially shorten the life of the PEX.
FIXTURE SIZING CHART FIXTURE MINIMUM SUPPLY CONTROL OCCUPANCY TUBE WATER SUPPLY FIXTURE UNITS (WSFU) SIZING Fixture Sizing Chart Bathtub with 1/2" fill Bathtub with 1/2" fill Bathtub with 3/4" fill Bathtub with 3/4" fill Bidet Diswashing Machine Drinking Fountain Kitchen Sink Kitchen Sink Laundry Tray Lavatory Lavatory Service Sink Shower Head Shower Head Urinal with 1" Flush Urinal with 3/4" Flush Urinal Wash Machine 8 lb Wash Machine 8 lb Wash Machine 15 lb Water Closet Water Closet Water Closet
LISTINGS & APPROVALS MrPEX Potable PEX‐a Tubing MrPEX Stainless Steel Press Sleeves MrPEX PPSU Fittings MrPEX Lead Free Brass Fittings MrPEX Lead Free Brass Ball Valves MrPEX PPSU Manifolds MrPEX Copper Manifolds LISTING STANDARDS ASTM F876/F877/F2023 /F1807/ F2159/F1960/F2080/F2098 ASTM E84 cNSFus‐pw ICC‐ES IAPMO UPC PPI TR‐4 CSA B137.5 NSF/ANSI‐14 NSF/ANSI‐61 CSA POTABLE NSF/ANSI‐61 Annex G ULC S102.2 NSF‐fs ICC‐PMG AWWA C904 ASTM cNSFus‐pw F877 CSA ASTM F2159/F877 CSA B137.
PRESSURE DROP CHARTS Pex Tubing Pressure Drop at 60° F (16° C) 10 Pressure Drop Charts 5 8 ft/s GPM 5 ft/s 1 3 ft/s 2 ft/s 0.5 1 ft/s 0.9 ft/s 0.8 ft/s 0.1 0.01 0.05 0.1 0.5 Pressure Drop in PSI/10 ft of PEX 16 MRPEXSYSTEMS.
Pex Tubing Pressure Drop at 120° F (49° C) 5 8 ft/s Pressure Drop Charts 10 GPM 5 ft/s 1 3 ft/s 2 ft/s 0.5 1 ft/s 0.9 ft/s 0.8 ft/s 0.1 0.01 0.05 0.1 0.
Installation Diagrams 18 Use the metal drop ear bend support 7140501. INSTALLATION DIAGRAMS MRPEXSYSTEMS.
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Use copper drop ear stub out elbow part 4109003 Installation Diagrams 20 MRPEXSYSTEMS.
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Installation Diagrams MRPEXSYSTEMS.
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Installation Diagrams MRPEXSYSTEMS.
USING FIRESTOP Firestop is an essential part of any plumbing application where tubing needs to penetrate a fire rated wall, floor or ceiling assembly. Follow local building codes when selecting a product, make sure that the product is rated for PEX as well as the intended application. Firestop manufacturer’s test their products with PEX tubing in many different applications, and can refer you to the correct product to use based on the application.
PEX PRESS F1807 BRASS AND F2159 PPSU REPAIR COUPLING Note: This coupling method is considered a manufactured fitting and is approved by MrPEX® to be used to repair the MrPEX® PEX Tubing. Making the repair: Repairing a Kink 26 Step 1 Start by making a square cut at the end of the tube using a suitable tubing cutter. Step 2 After cutting the tubing, slide the stainless steel press sleeve onto the tubing, making sure it seats all the way at the bottom.
LIMITED WARRANTY LIMITED WARRANTY-EFFCTIVE JULY 1, 2015 VALID FOR MRPEX® POTABLE PEX-A TUBING, FITTINGS AND OTHER SELECT PLUMBING PRODUCTS MrPEX® Systems warrants to its “clients” that the MrPEX® POTABLE PEX-a Tubing and Plumbing Components, used for Plumbing applications, sold hereunder shall be free from defects in material and workmanship and that the components will conform to specifications stated in MrPEX® Publications.
NOTES LIMITED WARRANTY 28 MRPEXSYSTEMS.
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