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Grundfos Comfort System - User Manual

Grundfos Comfort System
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GRUNDFOS INSTRUCTIONS
Comfort System
Hot water recirculation system
Installation and operating instructions
ANSI/NSF372

Table of Contents

Questions and Answers

  • S
    Salih KaradavutAug 19, 2025
    pump is working noisly.

    Summary

    Limited Warranty

    General Information

    Hazard Statements

    Critical safety warnings using DANGER, WARNING, and CAUTION signal words.

    Notes

    Explains symbols for explosion-proof products, required actions, and forbidden actions.

    Receiving the Product

    Inspecting the Product

    Check product against order, voltage, frequency, and for shipping damage.

    Scope of Delivery

    Details the items included in the product box, such as pump, timer, and valve.

    Installing the Product

    Pipe Connections

    Guidance on pipe manufacturer recommendations and avoiding specific sealants on valve threads.

    Installing the Pump

    Instructions for connecting the pump to the water heater outlet and hot-water line.

    Installing the Bypass Valve

    Steps for connecting the bypass valve to the sink faucet and angle stop valves.

    Checking for Proper Pump and Bypass Valve Operation

    Procedures to verify correct operation after installation and before power connection.

    Starting Up the Product

    Setting the Timer

    Instructions for setting the timer's time, date, DST, region, and ON/OFF events.

    Product Introduction

    Intended Use

    Specifies the product is for indoor residential potable drinking water systems.

    Pumped Liquids

    Details that the pump is lubricated by the pumped liquid and requires circulation.

    Identification

    Explains where to find pump electrical requirements on the nameplate.

    Approvals

    Lists the safety and quality certifications for the Comfort Pump and Valve.

    Servicing the Product

    Fault Finding the Product

    Technical Data

    Disposing of the Product

    Grundfos Comfort System Specifications

    General IconGeneral
    Liquid Temperature2 °C to 95 °C
    Maximum Operating Pressure10 bar
    Operating Temperature Range2 °C to 95 °C
    Ambient Temperature Range0 °C to 40 °C
    TypeCirculator pump
    Pump TypeSingle-stage centrifugal pump
    Power Supply230V, 50Hz
    InstallationInline
    ApplicationDomestic hot water circulation
    Frequency50Hz
    Impeller MaterialPES
    Max Flow RateVaries by model
    Max HeadVaries by model

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