DHW Recirculation Systems Guide

For New or Retrofit Installations
Using the existing cold water line as
the return line, On Command™ is ideal
for both new and retrofit installations.
Typically installed at the furthest
fixture from the water heater, On
Command™ fits out of the way, under
any bathroom vanity. Connections are
made from the hot and cold lines to
the suction and discharge side of the
pump using adapter tees and stainless
flex lines provided. When hot water
is needed, the pump is activated by pressing a starter button,
runs only long enough to supply hot water to the fixture and
then automatically stops. This prevents hot water from entering
the cold line. A spring-loaded Integral Flow-Check valve (IFC®)
prevents cold water from entering the hot line. Optional wireless
RF or motion sensor starters are also available.
Submittal Data Information
Features and Benefits of
the Taco On Command™
• Instant Hot Water Comfort
• Maximum Water & Energy Savings
• 24 Hour operation
• Maintenance free circulator -
unmatched reliability
• Removable stainless steel cartridge -
contains all moving parts
• UL listed
• Integral Flow-Check (IFC®) to prevent
thermo-siphoning or gravity flow
• Pre-wired power cord and integral
temperature sensor
• Adapter tees & stainless steel
flex lines included
• RF wireless remote or motion
sensor starter-optional
• Ideal for tankless water heaters
-6-
Circulator:
Casing (Volute) ..........Stainless Steel
Stator Housing ..........Steel
Cartridge ....................... Stainless Steel
Impeller .......................... Noryl
Shaft .................................Ceramic
Bearings .........................Carbon
O-Ring............................. EPDM
Integral Flow Check (IFC®):
Body & Plunger .........Acetal
O-Ring............................. EPDM
MATERIALS OF CONSTRUCTION
• On Command Circulator
• Hard Wire Push Button
• (2) Copper T's
• (2) Flex Hoses
• RF Wireless Starter Kit (Optional)
• Motion Sensor (Optional)
ON COMMAND™ INCLUDES
See Taco Catalog #100-15 and Submittal Datasheet 101-150 for full details.