Install Instructions

IM-PR 566442 1114 (Design Manual)

4 Installation and Startup

A good design must be accompanied by thoughtful

installation practices and proper startup procedures

to ensure that the radiant system performs as

specified.

4.1 Installation

General installation instructions are provided in this

section, while specific installation instructions for

applications like Snap Panel, Climate Mat, Climate

Panel and Climate Trak are located in Appendices

Follow these steps to perform a press connection with ViegaPEX Barrier or FostaPEX.

A-D. General installation instructions address the

following topics:

• Connecting tubing

• Handling and protecting tubing

• Layout and fastening

4.1.1 Connecting tubing

ViegaPEX Barrier tubing can be connected using a

press or compression connection, while FostaPEX

must use a press connection.

Figure 4-1

Square off tubing to proper length. Uneven, jagged or irregular cuts will produce unsatisfactory connections.

2. If using FostaPEX tubing, insert into prep tool, push and turn until no resistance is felt. If using ViegaPEX,

continue to Step 3.

3. Insert PEX press tting with attached sleeve into tubing and engage fully.

4. Ensure full tubing insertion at view holes in attached press sleeve. Full insertion means tubing must be

completely visible in at least two view holes and partially visible in the one.

5. Position press tool perpendicular over press sleeve, resting it against the tool locator ring.

Note: The tool locator ring must be in the factory-installed position while making a press to provide a

consistent leakproof connection. It may be necessary to rotate the tool locator ring to avoid interference

between the ring and tool.

6. Close handles, using trigger to reduce grip span if desired.

7. Extend handle and continue ratcheting until automatic tool release occurs at proper compression force.

8. Warning: The connection is not leakproof when the tool has been opened by emergency release.

The tool locator ring must be present to ensure a proper PEX press connection.

Pure

Flow

1/2”

Pure

Flow

1/2”

PureFlow

1/ 2”

Turn screw for

emergency release.