Developed by ACT, Inc. Metlund®
Systems in 1998, as a new energy water savings concept,
Structured Plumbing™ addresses the issue that none
of the previous plumbing methods save energy. In fact,
prior attempts to save water and energy became very
expensive to operate. Recognizing this, it became very
important to develop a system that would save energy,
save water, reduce pollution, and add convenience to
the user and
not cost more than $1.00 per year to operate.
Read
our newly (January, 2007) published guidelines. (45K) 
ACT, Inc. Metlund Systems' Structured Plumbing not only does
all of these, but also has a life expectancy of 15-20 years
and is virtually service-free! It operates 24 hours per day
on demand only.
There are two options for Structured Plumbing, both
using the S-Series Metlund D'MAND System.
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The first option is to locate the S-Series
pump and the ThermoSensor™ at the fixture furthest
from the water heater.
A button
hardwired directly to the pump
is used to activate the system
at that fixture.
Wireless remote
buttons are used to activate
the system from other fixtures. |
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The second option is to locate the S-Series
pump at the water heater and extend the ThermoSensor™
from the electronic control board back to the fixture
furthest from the water heater.
Both the S-Series pump and the ThermoSensor
should be installed on the dedicated return line pipe.
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When hot water is demanded, using any of our activation
methods, the Metlund D'MAND System brings hot water rapidly
to the farthest fixture from the water heater where the sensor
will pick up the temperature rise and send a signal to turn
the pump off. This concept prevents the hot water from passing
the ThermoSensor, thus saving lost energy in the dedicated
return line.
Note
We have discovered that many builders of new homes today
are installing two water heaters—sometimes even three—in
single-family homes for no other reason than to get hot water
to the fixtures more quickly. Hot water volume is not the
issue. If hot water is distributed quickly to each fixture,
a single water heater will be more than sufficient for a single
family home. A Metlund D'MAND System
with Structured Plumbing will not only save energy and water,
but it will also reduce sewage processing and air pollution.
Most importantly, it adds convenience to the user.
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