Grundfos G595916 Comfort System - Hot Water Recirculation Retrofit Kit (UP 15-10 SU7P TLC) includes one pump & valve

Item #: BCI537812


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Technical Specs

Installation Guide
Specification Sheet
Low Lead Compliant Yes

Why has hot water recirculation been virtually impossible for existing homes?

 

Traditional hot water recirculation is difficult, if not practically impossible to install in existing homes --- especially homes with finished basements. Companies have responded with clunky under sink units that are cumbersome to install and difficult to find electrical power under bathroom sinks.

 

New Strategy for Existing Homes

 

Grundfos innovation has developed a solution specifically for the existing home market. The Grundfos Comfort System provides a unique and cost effective solution to your hot water recirculation problems!


Features:

  • No return line required.
  • Installs in less than one hour.
  • No electricity needed under the sink.
  • Built-in timer & line cord.
  • Uses less energy than a 25-watt light bulb.
  • Can save up to 16,000 gallons of water per year, per household.
  • ANSI/NSF61 and IAPMO listed
  • Electrical Connection
    • Pump is fitted with 10 foot cord and 115V plug.
  • Timer
    • 24 hr, 3 position, 15 minute intervals.

Specifications:

Technical:

  • Speed Number: 1
  • Max flow: 6.16 US gpm
  • Head max: 5.25 ft
    3.28 ft
  • Approvals on nameplate: UL, CSA

Materials:

  • Pump housing: Stainless steel
  • Impeller: PES Composite (30% glass-filled)

Installation:

  • Maximum ambient temperature: 104 degreeF
  • Ambient max at 176 degreeF liquid: 176 degreeF
  • Maximum operating pressure: 145 psi
  • Flange standard: USA Threaded
  • Pipe connection: NPT 3/4"
  • Pressure stage: 10
  • Port-to-port length: 5 1/8 in

Liquid:

  • Liquid temperature range: 35.6 .. 150.8 degreeF

Electrical data:

  • Number of poles: 2
  • Max. power input: 25 W
  • Rated power - P2: 0.04 HP
  • Main frequency: 60 Hz
  • Rated voltage: 1 x 115 V
  • Current in speed 3: 0.23 A
  • Capacitor size - run: 2 µF/400 V
  • Insulation class (IEC 85): F
  • Motor protection: CONTACT
  • Thermal protec: internal
  • Type of cable plug: NEMA 5-15P

Controls:

  • Pos term box: 9H

Additional Grundfos Links

Our SKU: 595916

This product is listed under the following manufacturer number(s):

  • NA
    G595916

*Denotes a finish or option that has been discontinued

0 Question from the Community

Product Reviews

Rated 4 out of 5 by from Very easy to install. Work fairly well. Minor limitations.
Date published: 2009-10-02
Rated 5 out of 5 by from Excellent solution As with others, had long, long waits for hot water in the master bath at the end of the house away from the hot water heater. Now it's less than 5 seconds. Easy for someone with sweat soldering experience to install...Love it!
Date published: 2014-04-14
Rated 4 out of 5 by from Good product The shower furthest from our water heater took 5 minutes to warm up to a tolerable temperature, wasting gallons of water. We considered a tankless waterheater installation at the shower, but our plumber told us about and recommended this product which was much less expensive and an easy installation. Now the shower is ready within 10 seconds of turning it on! The only concerns are that the timer is difficult to set precisely so the pump runs longer than it actually needs to, and it does create an audible hum in some rooms of our house while it is running.
Date published: 2011-04-15
Rated 5 out of 5 by from Instant Hot Water What a difference adding the recirculation pump makes. We now receive hot water in 10 seconds where it used to take us 7 minutes.
Date published: 2010-11-20
Rated 4 out of 5 by from Grundfos - Hot H2O ReCirc Kit An excellent product that works as advertised. The installation istructions need some work to more fully explain some of the connections; however, it is easy to install, just need the right fittings, some patience, and to check for leaks for a number of days. . We now get hot water almost instantly in our bathroom where it use to take 3 - 4 minutes to heat up. I doubt that there is the energy/water savings that Grundfos says one will get, but the convenience of the "instant" hot water is great. I'm hopting that the plastic hot water cicrulating valve that is installed under the sink will last. Time will tell.
Date published: 2010-05-23
Rated 5 out of 5 by from Great Product Solved the problem of not having hot water quickly at all the faucets. High quality and easy installation.
Date published: 2010-05-06

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