PEX Installation Manual

IM-PF 724596 0416
8
3 Viega PEX Installation Methods
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.
3.1 Home run systems
The Viega ManaBloc manifold system, also known
as a parallel or home run 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.
Combination Installation
Home Run Installation
Connections Low
Installation Time Medium
System Efciency High
Features that the Viega ManaBloc system offers its
customers 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 shutoff valves provide a
simple way of servicing a xture or adding on
to the system
3.2 Combination systems
A combination system uses multiple manifolds
combined with a branch-and-tee supply system.
These systems use small manifolds located
throughout a structure placed near each main
fixture group and are supplied by the main hot
and cold supply lines similar to the branch-and-
tee system. The manifolds branch multiple lines
from a common location in lieu of multiple tee
fittings spread throughout. This takes advantage
of benefits from both types of systems and helps
keep hidden fittings to a minimum.
• Ideal for areas with multiple xtures grouped
together
• Uses fewer connections behind walls
compared to branch and tee
Connections Medium
Installation Time Low
System Efciency Medium