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Hydro-Smart 115 - User Manual

Hydro-Smart 115
44 pages
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Do not store or use gasoline or other
flammablevaporsandliquidsin thevicinityof
thisoranyotherappliance.
WHATTODOIFYOUSMELLGAS
Donottrytolightanyappliance.
Do not touch any electric switch, do not
useanyphone
inyourbuilding.
Immediatelycallyourgassupplierfroma
neighbor's phone. Follow the gas
supplier'sinstructions.
Ifyoucannotreachyourgassupplier,call
thefiredepartment.
Installation and service must be performed
byaqualifiedinstaller,serviceagencyorthe
gassupplier.
HydroSmart115
“MicroBoiler”forRadiantHeating
InstallationManualandOwner’sGuide

H
y
droSmart115
Ifyouhaveanyquestions,please
callorwriteto:
HydroSmartInc.
10725165thAveNW,
Elk River, MN 55330
WARNING
Iftheinformationinthese
instructionsisnotfollowed
exactly,afireorexplosion
mayresultcausing
propertydamage,personalinjuryordeath.
PleasemakesurethepropergaspressureguidelinesandrecommendationfromHydro
Smartfailuretodosocancauseafireorexplosionandmayresult,causingproperty
damage,personalinjury,ordeath.
ANSI Z21.10.3 andCSA4.3

Questions and Answers

  • D
    Dr. David WangJul 31, 2025
    What to do if hot water is not available when opening a Hydro-Smart 115 fixture?
    • K
      Karen HaydenJul 31, 2025
      To ensure hot water availability, verify the unit has a 120 VAC / 60 Hz power supply. If using a remote controller, check if it's powered on. Confirm the gas and water supply valves are fully open. Ensure the hot water fixture is open enough to draw at least 0.5 GPM through the water heater. Check if the unit is frozen and if propane models have enough gas.
  • A
    Alan HillAug 6, 2025
    Why is there fluctuation in hot water temperature in my Hydro-Smart 115 Boiler?
    • Z
      zwilsonAug 6, 2025
      To address temperature fluctuations in your hot water, make sure that the gas line is properly sized and that the supply gas pressure is sufficient. Also, inspect for any cross-connections between the cold and hot water lines.
  • T
    Timothy CalhounAug 12, 2025
    What to do if the hot water turns cold and stays cold with my Hydro-Smart Boiler?
    • A
      Anita RosarioAug 12, 2025
      To resolve this, ensure the flow rate is sufficient to keep the Hydro-Smart Boiler running. Inspect the recirculation line for enough check valves. Confirm the gas supply valve is fully open. Clear any debris or obstructions from the fixtures, and check if the flow rate is too low.
  • A
    Ashley MeltonAug 18, 2025
    Why is the water not hot enough in my Hydro-Smart Boiler?
    • J
      James MooreAug 19, 2025
      To address this issue, it's advisable to compare the flow and temperature. Also, check for cross plumbing between cold and hot water lines. Ensure the gas supply valve is fully open and the gas line is properly sized. Verify that the gas supply pressure is adequate and that the set temperature isn't too low.
  • N
    Nicholas GuerraAug 25, 2025
    Why does it take a long time to get hot water at the fixtures with my Hydro-Smart 115?
    • K
      kathleen79Aug 26, 2025
      The time it takes to get hot water depends on the length of piping between the water heater and the fixtures. The longer the distance or the bigger the pipes, the longer it will take.

Summary

Specifications

Safety Guidelines

General Safety Practices

Covers general safety rules and code compliance for installation.

Installation

General Installation Requirements

Outlines general installation requirements and precautions for safe operation.

Installation Warnings and Precautions

Details warnings on installers, pits, vents, debris, and water quality.

Warning for Installations

Venting Instructions

Vent Termination Clearances

Gas Supply and Pipe Sizing

General Gas Supply Information

Covers gas type, pressure, conversion warnings, and general connection procedures.

Gas Connections and Testing

Details gas shut-off valves, leak testing, and purging requirements.

Measuring Inlet Gas Pressure

Water Connections

Pressure Relief Valve Requirements

Details requirements and installation of pressure relief valves for safety.

Electrical Connections

Initial Operation Checklist

Operating Safety Procedures

General Operating Safety

Covers safety warnings, pilotless ignition, and gas smell procedures.

Standard Operating Instructions

Provides step-by-step instructions for turning the unit on and off.

Critical Safety Warnings

Flammable Vapors Hazards

Warns about explosion and fire risks from flammable liquids and vapors.

Hot Water Temperature Hazards

Alerts to severe burns or death from hot water temperatures over 125°F.

Normal Operation

Temperature Settings

Flow Rate and Freeze Protection

Maintenance and Unit Draining

Troubleshooting: Water Temperature and Amount

Troubleshooting: Unit and Remote Controller

Error Code Diagnostics

Error Code Display and Interpretation

Explains how error codes are displayed on the unit and remote controller.

Error Code Fault Analysis

Error Code Fault Analysis Continued

Hydro-Smart 115 Specifications

General IconGeneral
BrandHydro-Smart
Model115
CategoryBoiler
LanguageEnglish