Application:
The Taco
Hot-LinkPlus System
for Domestic Hot Water
recirculation ensures instant hot water comfort at showers
and faucets. By supplying fresh hot water to the fixtures
while returning the “cooled” hot water back to the water
heater through the cold line, it also saves thousands of gal-
lons of wasted water per year. The average family can
achieve yearly savings of up to 12,000 gallons of water nor-
mally wasted down the drain while waiting for hot water.
High Quality Features:
The
Hot-LinkPlus System
includes a Taco SmartPlus cir-
culator designed specifically for use with the Taco Hot-Link
Valve. The circulator and valve are suitable for most resi-
dential homes with hot water supply lines up to 100 feet.
The unique
Hot-Link Valve
is the key to the system. Made
of durable high temperature polymer, it creates an easy-to-
install return loop through the cold line from the furthest fix-
ture back to the water heater. An integral thermal sensor
disc closes when hot water reaches the valve. An internal
flow check prevents cold water from backing into the hot
line. Stainless steel braided flex hoses complete the instal-
lation.
Installing the Hot-LinkPlus System Circulator:
1. Follow all local plumbing and electrical codes when
installing the
Hot-LinkPlus System
.
2. Shut off cold water supply valve to water heater.
3. Open a hot water faucet in the house to drain the hot
water line.
4. Open water heater drain valve located at the bottom of
tank to drain remaining hot water from the lines. It is not
necessary to drain the entire tank.
5. Disconnect hot water supply line at water heater outlet
nipple.
6. Install the 3/4" female tailpiece union adapter provided
to the water heater outlet. Apply pipe dope or Teflon
tape to all male threads as required.
7. Install the 3/4" male tailpiece union adapter to the pump
outlet connection. Apply pipe dope or Teflon tape to all
male threads. Be sure flow arrow located on the pump
casing is in the proper direction. See diagram.
8. Install the stainless steel
Hot-LinkPlus
circulator by
connecting to the union nut/tailpiece attached to the
water heater outlet. Circulator motor must be in the hor-
izontal position.
9. Reconnect the hot water supply line to the union tail-
piece attached to the circulator discharge.
10. Open supply valve to water heater. Let water run until all
air is purged from lines. Check for any leaks. If leaks are
detected, close supply valve and tighten all connections.
11. Shut off open hot water faucet.
Instruction Sheet
Hot-LinkPlus
®
System for Domestic Hot Water Recirculation
102-552
SUPERSEDES: NEW
EFFECTIVE: November 28, 2017
Plant ID# 001-5006
CAUTION: Do not run circulator dry. Permanent damage
may result and will void warranty.
CITY WATER
SUPPLY
Cold
Additional Hot-Link
Valve locations
Hot
Cold
Inlet
Water
Heater
HOT WATER LINE
A typical
installation
with a
Mixing Valve
SmartPlus
Circulator
COLD WATER LINE
Cold
Hot
The best location
is furthest fixture
from hot water heater
Shut-Off
Valve
Shut-Off
Valve
1/2"
1/2"
Use (2) existing 3/8" x 1/2"
female to female flex lines
(2) new 1/2" x 1/2"
Taco® supplied flex lines
(female to female)
Hot-Link Valve includes (2)
plastic wall anchors
and screws
DIAGRAM IS FOR
REFERENCE ONLY
Sensor
SmartPlus
Circulator
DIAGRAM IS FOR
REFERENCE ONLY
Sensor
WARNING: To avoid electrical shock, disconnect the power
supply to the circulator and the main electrical unit.
WARNING: 1. Circulator must be installed on and supported by
the circulation piping.
2. The addition of unions on both the suction and
discharge side of the circulator is recommended.
Figure 1:
