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Rinnai Grundfos Pump with Timer Kit

SKU: by Rinnai

  • $ 23999

The Grundfos Pump and Timer Kit improves upon the exceptional engineering behind Rinnai Tankless Water heaters by ensuring the delivery of a constant stream of hot water during a preset schedule. Scheduling for times of use saves money by reducing wasted energy during dormant periods.

Kit Contents:

  • Grundfos 15 - 55 pump with timer and internal check valve
  • 6 Ft (2 m) electrical cord
  • 6 Ft (2 m) BX conduit pre wired to pump (includes in line 4 Amp glass fuse)
  • Wire Nuts (Qty 5)
  • Flange kit
  • Rinnai Circ-Logic™ Manual


  • Housing Material: Stainless Steel with Check Valve
  • Flow Range: 20 GPM
  • Head Range: 17 ft
  • Max Liquid Temperature: 150 F
  • Max System Pressure: 145 PSI
  • Input Voltage: 115V
  • Frequency: 60 Hz
  • Max Amperage: 0.75A
  • Connection Size: 3/4" Flange
  • Weight (Pump/Flange Kit Combined): 8.9 lbs.
  • Pipe Length:
    Equivalent pipe length using Grundfos GTK15 pump at
    120°F (49° C) = Up to 200 Ft (61 m) (3/4” piping)
    Equivalent pipe length includes supply piping, return piping and fittings. The
    installer/contractor/engineer must calculate the total equivalent pipe length of
    the piping system.
  • Warranty: Manufacturer's Warranty Applies

Timer Control:

  • Designed to turn the pump on and off at preset times.
  • Shortest Switching Interval: 15 minute increments
  • Protection: Clear Plastic cover for dust and moisture protection of clock face.
  • Modes: Timer, on ( override ) and off ( override )


  • Grundfos GTK15 Kit must be used with Rinnai Tankless Water Heaters utilizing Rinnai Circ-Logic™.

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