Install Instructions

Viega PureFlow System Design Considerations
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IM-PF 724596 1021 PureFlow Water System (EN)
6 Viega PureFlow System Design Considerations
There are three installation methods that Viega recommends to help
enhance your water distribution systems performance by reducing
water waste and hot water delivery times. These methods consist of
the home run, combination, and branch-and-tee systems. The following
sections provide information to help select the best system based on the
application.
The home run system, also know as a parallel system, is a unique method
of plumbing that provides homeowners water and energy savings and
can reduce water waste by up to 40% compared to traditional systems.
This system consists of a centralized manifold with individual distribution
lines that run to each 󶈵xture (hot and cold). These lines are sized to the
speci󶈵c 󶈵xture demand using ⅜" for low-demand 󶈵xtures (2.5 gpm or
less) and ½" for higher-demand 󶈵xtures (up to 4 gpm).
Features that the home run system o󶈴ers over branch-and-tee plumbing
systems include:
■ Faster Hot Water Delivery – properly sized lines deliver hot water up to
four times faster.
■ Dedicated lines to each 󶈵xture use fewer 󶈵tting connections behind walls.
■ Balanced Water Delivery – multiple 󶈵xtures can be used
simultaneously without noticeable pressure or temperature changes.
■ Better Control of the Plumbing System – individual ¼-turn shuto󶈴 valves
provide a simple way of servicing a 󶈵xture or adding on to the system.
6.1 Home Run Systems
Home Run Installation
Connections Low
Installation Time Medium
System E󶈷ciency High