Use and Care Manual

Application:
The Taco Hot-Link
®
System for Domestic Hot Water recir-
culation 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 gallons of
wasted water per year. The average family can achieve
yearly savings of up to 12,000 gallons of water normally
wasted down the drain while waiting for hot water.
High Quality Features:
The Hot-Link System includes a high performance
Stainless Steel 00 circulator with a pre-wired power cord
and programmable 24 hour timer. This circulator is suitable
for most residential homes with hot supply lines up to 150
feet in length.
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
fixture 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-Link System Circulator:
1. Follow all local plumbing and electrical codes when
installing the Hot-Link 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 one
3
⁄4" tailpiece of the union adapter provided
to the water heater outlet. Apply pipe dope or Teflon
tape to all male threads as required.
7. Install the other
3
⁄4" union tailpiece to the pump inlet
connection. Be sure flow arrow located on the pump
casing is in the proper direction. See diagram.
8. Install the stainless steel Hot-Link circulator by con-
necting the union halves. Circulator motor must be in
the horizontal position.
9. Reconnect the hot water supply line to circulator outlet.
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-Link
®
System for Domestic Hot Water Recirculation
102-352
SUPERSEDES: June 1, 2013 EFFECTIVE: June 1, 2014
Plant ID# 001-3917
CAUTION: Do not run circulator dry.
Permanent damage may result and will void
warranty.
C
ITY WATER
S
UPPLY
Cold
A
dditional Hot-Link®
Valve Locations
Hot
Cold
Inlet
Water
Heater
HOT WATER LINE
A Typical
Installation
with a
Mixing Valve
Hot-Link®
Circulator
COLD WATER LINE
C
oldHot
The Best Location
i
s furthest xture
from Hot Water Heater
S
hut-O
Valve
Shut-O
V
alve
1/2"
1
/2"
Use (2) existing 3/8" x 1/2"
female to female ex lines
(2) new 1/2" x 1/2"
Taco® supplied ex lines
(female to female)
Hot-Link® includes (2)
plastic wall anchors
and screws
Hot-Link®
Circulator
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 support-
ed by the circulation piping.
2. The addition of unions on both the suction
and discharge side of the circulator is
recommended.
A Taco resource – saving product