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 multiple 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 oer rebate incentives to help
conserve this natural resource.
*Source: Dept. of Energy study.
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 temper-
ature. 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, mil-
lions 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
For Hot Water Recirculation
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
Mixing
Valve
Cold Water Supply
Hot Water Supply
Hot Water Return
Sink
Dish
Washer
Clothes
Washer
Shower Tub