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)
Viega PureFlow PEX can be used in recirculating domestic hot water
plumbing loops, provided:
1. The plumbing loops shall operate with water temperatures of 140° F or
lower, as required by most model plumbing codes.
2. The recirculating loop is for supplying hot water more quickly to the
xture.
3. The tubing is marked as rated for “continuous recirculation” as
evidenced by the ASTM F876 certication marking PEX 5306 (CL5).
Continuously Recirculating Hot Water Plumbing Loops
Hot return
Hot water supply
Hot
Cold
Hot water supply
Circ
pump
Check
valves
Cold supply to W/H
End cap
Cold water supply
If the ManaBloc must be mounted
farther than 8 ft. from the hot water
source, the ManaBloc may be supplied
from a domestic hot water circulating
loop using Viega PureFlow PEX tubing.
Cold water supply
Water heater