RadiantPEX-AL
™
Connections -
Press
Insulator Washer*
Stainless Steel Press Sleeve
EPDM O-Rings
View Port
Brass
IS-WR-RadiantPEX-AL-Connections
For Residential or Commercial Radiant Heating and Snow Melt Applications
NO
T FOR
P
O
T A B L E U
S
E
RadiantPEX-AL press fittings include o-rings on the barbed section of the fitting
and an insulator washer at the base. The stainless sleeve includes a view
port for ensuring the RadiantPEX-AL is properly seated before making a press
connection.
WARNING
!
Read these instructions and all product labels BEFORE
installation. Installation must be performed by qualified
personnel, in accordance with local codes and standards.
FAILURE TO COMPLY WITH PROPER INSTALLATION IN-
STRUCTIONS COULD DAMAGE TUBING AND FITTINGS CAUSING WATER
DAMAGE AND/OR DAMAGE TO THE PIPING SYSTEM WHICH CAN RESULT
IN PROPERTY DAMAGE AND/OR PERSONAL INJURY
WARNING:
This product contains chemicals known to the
State of California to cause cancer and birth defects or
other reproductive harm.
For more information: Watts.com/prop65
Installation
1. Cut the Tubing. Use a tubing cutter. Ensure the cut is straight and
clean.
2. Prepare the connection
• Use a reamer tool to prepare the end of the tubing for the connection.
• Ensure the insulator washer is in place at the base of the fitting.
• Ensure the stainless steel sleeve is seated against the insulator washer.
• Slide the RadiantPEX-AL tubing over the barb until it is fully inside the
sleeve and can be seen through the view port.
3. Make the connection
• Place the assembly contained by the sleeve into the press tool jaws.
• Firmly close the jaws. The tool will automatically stop when complete.
4. Pressure Test
Test all connections between 50 to 100 psi (3.4 to 6.9 bar) with either air or
water (do not use both). If temperatures are near or below freezing, do not
use water.
O-rings and insulator must be re-installed before tubing is installed and
the connection finalized.
Refer to Watts Radiant's Product Catalog for connection and tool options.
RadiantPEX-AL
™
Press & Compression Connections
NOTICE
• Only use Watts Radiant fittings that correspond to the selected size and
type of tubing. Improper sizing can result in leaks.
• Wrap completed connections with PVC electricians tape or shrink wrap if
they will be buried in concrete or other masonry material.
• For sweat fittings, remove o-rings and insulator washer before soldering.
Once cool, be sure to re-install.
• Do not splice multiple lengths of RadiantPEX-AL tubing together as this will
result in increased pressure drops. Refer to the tubing installation manual
available from WattsRadiant.com for recommended circuit lengths and
other tubing installation guidelines.
• Repairing RadiantPEX-AL that has been in service requires special atten-
tion, particularly when glycol has been used. Any residual amounts of
glycol or any other coating or debris inside the tube must be removed and
all fitting surfaces must be clean before making connections.
• Watts RadiantPEX-AL fittings are engineered to work together. Watts
extends no warranty – express or implied – to any failure or damage of any
kind resulting from the use of materials not specified by Watts.
RadiantPEX-AL
™
Connections -
Compression
RadiantPEX-AL compression fittings include o-rings on the barbed section and
an internal compression ring with an external compression nut.
Compression Ring
EPDM O-Rings
Compression Nut
Insulator Washer
Brass
Male NPT Adapter*
Installation
1. Cut the Tubing. Use a tubing cutter. Ensure the cut is straight and
clean.
2. Make the connection
• Use a reamer tool to prepare the end of the tubing for the connection.
• Slide the compression nut over the tubing.
• Slide the compression ring over the tubing.
• Ensure the insulator washer is in place in the recess of the fitting.
• Slide the RadiantPEX-AL tubing over the barb. Make sure the tubing is
seated against the insulator washer insert.
• Slide the compression nut up and begin threading it onto the fitting. The
compression ring will automatically be positioned as you tighten the nut..
• Use an open-end wrench to complete the connection (do not use a
crescent wrench). Tighten the connection to 20 in/lb (2.3 N-M) (snug and
then an additional 1/4 turn).
3. Pressure Test
Test all connections between 50 to 100 psi (3.4 to 6.9 bar) with either air or
water (do not use both). If temperatures are near or below freezing, do not
use water.
