Install Instructions
Table Of Contents
- About this Document
- Disclaimers
- Product Information
- Viega Manifolds
- Viega PureFlow Tubing
- Viega PureFlow Fittings
- Viega PureFlow System Design Considerations
- Water Service Installation
- Installing the ManaBloc
- Mounting the ManaBloc
- Installing Manifold Distribution Lines
- Installing the Viega PureFlow PEX Tubing System
- Fastening the Viega PureFlow System
- Installing Viega PureFlow Fittings
- Pressure Testing Viega PureFlow Systems
- System Disinfection
- Installer Checklist
- Limited Warranty
Fastening the Viega PureFlow System
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IM-PF 724596 1021 PureFlow Water System (EN)
12.7 Expanding Foams
When penetrations must be sealed for air inltration purposes, there
are several options available. Use a good grade of silicone, acrylic, or
siliconized acrylic caulking. DO NOT use oil-based caulks. Most canned
expanding foams and open- or closed-cell pipe insulation are good
sealing materials and may be used in direct contact with PEX tubing.
Other materials may be used provided they do not cause short- or long-
term damage to the PEX tubing.
WARNING!
When using expanding spray foam to insulate walls in
a structure, there are several options available. Viega
suggests using water-based or urethane-based open-cell
insulation only. DO NOT use closed-cell spray foams.
Closed-cell spray foams have the potential to generate
high temperatures during their expansion process,
especially when not applied properly, which can damage
PEX tubing. Always follow the spray foam manufacturer’s
installation instructions and warnings.
Do not expose Viega products to any foreign substance that
includes but is not limited to VOC (Volatile Organic Chemical)
compounds, paints, solvents, glues, cleaners, and disinfectants.
Viega products that are exposed to these types of substances
are at risk of having failures (leaks).
12.8 Fire Stop Compounds
Most building codes require the use of a re-stopping compound when
tubing penetrates a re-rated wall. There are a number of re-stopping
compounds identied as water based, acrylic or latex that have been
listed for use with PEX tubing that include but are not limited to the
following.
■ 3M Fire Protection: CP 25WB+ Caulk
■ Tremco, Inc.: TREMstop
®
IA
■ Specied Technologies, Inc.: SpecSeal
®
SSS 100 / SSS 102
■ Passive Fire Protection Partners: Fire Stop
™
4800 DW / 4100 DW /
4100 NS / 3600 EX
It is the responsibility of the user to determine the suitability of these or
any products for the intended application and install the compounds in
accordance with the product’s installation instructions and listing.