Product Brochure

The Problem:
Waiting for Hot Water
It’s a common problem: turn on the faucet or shower
for hot water, then wait for it to arrive. In fact, the wait
can be up to two minutes in larger homes with mul-
tiple bathrooms and long runs of pipe between the
plumbing xtures and the water heater! With a Taco
SmartPlus circulator in place, there’s no more wait.
Instant hot water!
Waiting Means Wasting
Waiting for hot water sends millions of gallons of
cooled water down the drain each year. In fact, an
average family of four wastes up to 12,000 gallons
of water each year waiting for hot water.* Water
conservation is so important that many US states
and municipalities routinely impose watering bans
and oer rebate incentives to help conserve this
natural resource.
*Source: Dept. of Energy
Estimated Annual Water Savings
Energy Down The Drain
Of course, all that “waiting water” contains some heat
energy (BTU’s), even if it’s only room temperature.
Wasting those BTU’s and starting over with fresh,
cold water to heat up requires even more heat energy.
So in addition to wasting water, millions of BTU’s
and energy dollars are wasted, too.
How a Domestic Hot Water
Recirculation System Works
A standard DHW system requires a dedicated return
line from the furthest xture back to the water heater.
The return line is connected to a tee at the tank drain
valve or to the tank’s cold water supply line. A Taco
SmartPlus circulator pump is installed on the hot
water supply line, or on the hot water return line, and
controlled by the SmartPlus electronic control board.
How the SmartPlus Circulator Works
The SmartPlus circulator has a mode select toggle
switch on the electronic control board that allows
for 2 operation modes. “Pulse” or “Smart” mode can
be selected using the toggle switch located on the
Pipe
Type
Hot Water
Supply
Length (ft.)
100
150
200
250
300
100
150
200
250
300
Pipe
Water Volume
(gallons)
Daily Water
Volume Wasted
(gallons)*
12
18
24
30
36
25
37
50
62
75
Annual Water
Volume Saved
(gallons)
4,400
6,600
8,800
11,000
13,200
9,200
13,700
18,300
23,000
27,500
* Assume average of 10 cycles per day
.
1/2” Copper
Type “L”
1.2
per 100’
3/4” Copper
Type “L”
2.5
per 100’
Option #2
SmartPlus Location
Sensor needs
to be on hot
outlet pipe
Option #1 SmartPlus
Circulator Pump Location
Relief
Valve
Shut-Off
Valve
Shut-Off
Valve
Shut-Off
Valve
Hose Bibb
Check Valve
Cold Water Supply
Hot Water Supply
Hot Water Return
Sink
Dish
Washer
Clothes
Washer
Shower Tub
Water
Heater