THERMO 2000 TURBOMAX 109

Questions and Answers

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Michael PerezAug 16, 2025
Why is the water at the faucet too hot with my THERMO 2000 TURBOMAX 109?
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  Diane WilliamsAug 16, 2025
  If the water at the faucet is too hot when using your THERMO 2000 Water Heater, it could be due to several reasons: * The thermostatic mixing valve temperature setting may be too high. Lower the temperature setting of the mixing valve. * The TURBOMAX® aquastat temperature setting might be too high. Lower the temperature setting of the aquastat or reduce the boiler temperature. * The system plumbing could be improperly installed. Compare the plumbing to the installation guide. * The system wiring might be incorrect. Compare the wiring to the installation guide.
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Maria FinleyAug 23, 2025
Why is my THERMO 2000 TURBOMAX 109 producing insufficiently hot water?
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  martinjenniferAug 23, 2025
  If you're experiencing insufficiently hot water or a lack of hot water at the faucet with your THERMO 2000 Water Heater, here are some potential causes and solutions: * The TURBOMAX® temperature setting may be too low. Increase the TURBOMAX® temperature control (aquastat) to a higher setting. * Peak hot water usage might exceed the boiler output capacity or TURBOMAX® storage. Determine peak usage and compare it to the boiler recovery capacity and tank volume. * Scale build-up could be present in the thermostatic mixing valve or TURBOMAX®. Clean as described in the Maintenance section. * The TURBOMAX® temperature control may be faulty. Replace the temperature controller (aquastat).
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Mark PayneAug 27, 2025
Why is my THERMO 2000 Water Heater boiler over-cycling?
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  webbderrickAug 27, 2025
  If your THERMO 2000 Water Heater is experiencing boiler over-cycling during the summer or the boiler runs for longer periods, consider these possible causes: * The boiler hi-limit may be set too low. Increase the boiler hi-limit. * The boiler controller or aquastat might be faulty. Replace the faulty controller. * There might be Turbomax scale build-up. Clean the coil as described in the Maintenance section.
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Mark LeeAug 30, 2025
How to stop water noise in THERMO 2000 TURBOMAX 109 Water Heater hydronic system?
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  Austin PatelAug 30, 2025
  If you're hearing water noise in your THERMO 2000 Water Heater hydronic system, here are a couple of things to check: * Air might be trapped in the hydronic system. Purge the air from the boiler, the TURBOMAX®, and the radiator. If the problem persists, call for service. * The differential pressure across the valve could be too high. Check if the pump or the valves are properly sized.
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Erin MillerSep 3, 2025
What to do if THERMO 2000 TURBOMAX 109 drips from the pressure relief valve?
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  mclaughlinchristineSep 3, 2025
  If water is dripping from the pressure safety relief valve during each boiler cycle of your THERMO 2000 Water Heater, it indicates that the expansion tank is unable to store the required volume of boiler water during maximum design operating temperatures without exceeding the maximum allowable operating pressure. Check the expansion tank sizing. Drain the expansion tank and refill it with air. If the bladder is broken in the expansion tank, replace the expansion tank.
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Thomas MaySep 7, 2025
How to increase domestic hot water in THERMO 2000 TURBOMAX 109?
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  Thomas MillerSep 7, 2025
  If you have insufficient domestic hot water from your THERMO 2000 Water Heater (when the boiler supplies both space heating and hot water), it might be that the system cannot prioritize boiler water for domestic water use. To resolve this, install a pump or a valve-zoning panel with the domestic hot water priority feature. When there's a demand for domestic hot water, the zoning panel will turn off the space heating system and direct all its energy into producing DHW.
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emma22Sep 10, 2025
How to fix water hammer noise in THERMO 2000 TURBOMAX 109 Water Heater?
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  Shirley McdonaldSep 12, 2025
  If you're experiencing water hammer noise with your THERMO 2000 Water Heater, consider the following potential causes and solutions: * High velocity or flow rate of hot water use. Install a water hammer absorber, reduce water supply pressure, check the water pressure regulator, and use slower closing valves. * Expansion tank issues for potable water or the heating loop, such as a locked expansion tank due to high system pressure. Check the inlet pressure reducing valve setting and reset if the reduced pressure setting is too high. Drain the expansion tank and refill it with air. If the bladder is broken, replace the expansion tank. * High velocity affecting the zone valves. Install valves designed to better handle these circumstances.
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tammy60Nov 11, 2025
What to do if there is no hot water at the faucet in THERMO 2000 TURBOMAX 109?
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  Miss Claire SmithNov 11, 2025
  If there is no hot water at the faucet when using your THERMO 2000 Water Heater, several issues could be the cause: * The boiler might not be operating. Try pressing the reset button, checking the main cut-off switch, and inspecting the fuse. If these steps don't resolve the issue, call for boiler service. * The circulator could be malfunctioning. Verify the power supply, check the shaft coupling, and ensure the impeller isn't locked. * The TURBOMAX® settings or calibration might be incorrect. Try setting the TURBOMAX® temperature to a higher setting. If the issue persists, contact boiler service. * There could be electrical problems such as faulty relays, wiring, or a blown fuse. Check the fuses and replace any that are blown. Reset the circuit breaker and verify the power supply...

Summary

TURBOMAX Use & Care Manual

General Safety Introduction

Emphasizes reading and following all warnings for safe operation.

TURBOMAX Specifications

Product Description and Key Features

Details the internal copper heat exchanger, materials, pressure ratings, and insulation.

Model Specifications Table

Provides a table of model specifications including tank volume, heat transfer area, flow rate, dimensions, and weight.

General Safety Precautions

Water Temperature and Scald Risk

Warns that water over 125°F can cause severe burns or death, highlighting risks to vulnerable groups.

Energy Conservation and Temperature Settings

Advises setting the lowest temperature that satisfies needs for energy efficiency.

Introduction and Installation Considerations

Local Installation Regulations and Decisions

States installation must conform to codes and covers pre-installation decisions on valves and output.

Location Requirements

Specifies installing the unit vertically in a clean, dry location, protected from damage and freezing.

Installation Guidelines and Components Checklist

Installation Clearances and Special Locations

Details clearances, catch pans, restaurant elevation, and corrosive atmosphere avoidance.

Mechanical Components Checklist

Provides a checklist of essential mechanical components for proper installation.

Installation Procedures

Warnings, Shipment Inspection, and Water Connections

Warns against unauthorized attachments, covers shipment checks, and details water line connections.

Expansion Tank for Potable Water

Explains the purpose of an expansion tank to prevent pressure build-up in closed systems.

Piping Schematics and Requirements

Zone Valve Zoning Schematic

Provides a basic piping schematic for zone valve zoning with a Turbomax and boiler.

Piping Schematic Requirements

Outlines requirements for installation, including code conformity and safety valve installation.

Radiant Floor System Piping

Buffer Tank Schematic and Requirements

Illustrates a schematic for using Turbomax as a buffer tank and details its installation requirements.

Multi-Unit Piping Schematics

Two Water Heaters Schematic and Requirements

Presents a schematic for two units and outlines requirements for multi-unit installations.

Light Commercial System Piping

Thermal Mass Tank Schematic and Requirements

Illustrates a schematic for light commercial use with a thermal mass tank and its requirements.

Component and Zoning Details

Pressure Relief Valve and Mixing Valve

Explains the function and installation of safety relief valves and thermostatic mixing valves.

Boiler Connections and Zoning Recommendations

Covers boiler water connections, circulator zoning, and zone valve zoning.

Pump and Pipe Sizing

Boiler Water Temperature Drop and Pump Flow Rate

Details calculating temperature drop and pump flow rate for system design.

Pipe Sizing and Friction Loss

Pipe Sizing Criteria and Pressure Loss in Pipes

Covers pipe sizing principles, velocity limits, and calculating pressure loss in pipes.

Pressure Loss and Pump Selection

Pressure Loss Calculations and System Drop

Details pressure loss calculations for components and the total system for pump selection.

Pump or Circulator Selection Guidance

Provides guidance on selecting the appropriate pump based on system requirements.

Piping System Pressurization and Expansion Tank Sizing

Pressurization Objectives and Tank Sizing

Explains system pressure goals and how to size an expansion tank for system safety.

Wiring and Temperature Control

Wiring Requirements and Temperature Control Settings

Outlines electrical wiring standards and temperature adjustment for the aquastat.

Wiring Schematics

Circulator and Zone Valve Wiring Diagrams

Shows wiring diagrams for separate circulators and 3-wire/4-wire zone valves.

Circulator Zoning Wiring

Domestic Priority Circulator Zoning

Details wiring for circulator zoning with an emphasis on domestic hot water priority.

Circulator Zoning Wiring (Continued)

Circulator Zoning Diagram with Priority Relay

Presents a wiring diagram for circulator zoning, including priority relay logic.

Gas Boiler Circulator Zoning Wiring

Gas Boiler Zoning Schematic with Domestic Priority

Illustrates zoning wiring for a gas boiler with domestic hot water priority.

Steam Installation

Steam Boiler Piping Precautions and Wiring

Provides precautions for steam boiler piping and wiring recommendations for steam systems.

Low Pressure Steam Boiler Piping Schematic

Steam Boiler Condensate Schematic and Requirements

Shows a schematic for steam boilers with condensate and lists installation requirements.

Steam Boiler Wiring Schematics

Steam Boiler Wiring Methods A and B

Provides two different wiring schematic options for low-pressure steam boilers.

Operation

Pre-Operation Safety and Filling Procedures

Covers safety precautions before operation and the steps for filling the heater coils.

Operating the Water Heater

Explains how to start and operate the water heater after installation and purging.

Advanced Operation and Settings

Boiler Start-up and Aquastat Adjustment

Describes boiler start-up sequences and aquastat adjustment for optimal temperature.

Thermostatic Mixing Valve Operation

Details how to operate a thermostatic mixing valve for safe and consistent water temperature.

Maintenance

Piping Inspection and Safety Valve Checks

Outlines yearly piping inspections and monthly checks of safety valves for proper function.

Scale Prevention and Cleaning Procedures

Discusses scale build-up issues, prevention methods, and chemical cleaning procedures.

Troubleshooting System Problems

Troubleshooting Hot Water Issues

Addresses common causes and solutions for insufficient or no hot water.

Troubleshooting Temperature and Noise Issues

Covers problems like water being too hot, boiler over-cycling, and water hammer noise.

Parts and Component Replacement

Replacement Parts List and Aquastat Replacement

Lists available parts and provides detailed steps for replacing the aquastat.

Pump Sizing Spreadsheet

System Flow Rate and Friction Loss Calculations

Spreadsheet section for calculating system flow rate and friction losses.

Pump Selection Worksheet

Spreadsheet section for selecting the appropriate pump based on calculated system parameters.

Expansion Tank Sizing Spreadsheet

Boiler Water Volume Calculation and Tank Selection

Spreadsheet for calculating system water volume and selecting the correct expansion tank.

TURBOMAX Limited Warranty

Warranty Coverage Details

Outlines warranty coverage for residential and commercial installations.

Warranty Exclusions and Limitations

Lists conditions under which the warranty is void or limited.