ThermoMaster Series

ThermoMaster Series Domestic Water Heaters

The ThermoMaster is RECO’s water heater with storage. It is a complete packaged unit that delivers up to 7.5 million BTU/HR as standard with storage capacity to help meet peak load demands with an uninterrupted supply of hot water.


The ThermoMaster provides high recovery rates, accurate temperature control, and dependability. They are designed for facilities with a central energy source. This energy source is typically piped directly to the unit in a mechanical room to provide hot water to a specific building or application. Units can also be piped in parallel to provide additional capacity or emergency back-up.

At the heart of the control system is the Control Master II® panel with a digital PAC controller. The Control Master II has an easy-to-navigate LCD panel for local monitoring and set point adjustment. It accepts remote set point changes and can re-transmit water temperature by analog signals or digital signals via standard Modbus® or BACnet® network communications protocols.

Key Features and Benefits

  • Safety features include a pressure/temperature (P/T) relief valve, solenoid-operated dump valve, high and low control panel alarm settings, and an automatic fail-closed steam inlet control valve.
  • Storage capacities to 5,000 gallons assure an uninterrupted supple of hot water.
  • High accuracy temperature control of ±4 °F achieved.
  • Available in horizontal or vertical configurations for added installation flexibility.
  • ASME constructed and stamped tank assures safe operation to 300 PSIG.
  • All wetted parts on the heated side are lead-free and comply with NSF Standard 61 and the requirements of the U.S. Safe Drinking Water Act.

Materials of Construction

The ThermoMaster Series are offered with stainless steel, copper-nickel, or carbon steel storage tanks. Carbon steel tanks are available with several lining options for added corrosion resistance and longer vessel life. Piping is carbon steel, welded or threaded as appropriate. Copper tubes are standard, with optional 90/10 copper-nickel tubes available for higher temperatures, pressures, and/or corrosive water conditions. A tank insulation jacket conforming to ASHRAE Std. 90.1 is also provided.

ThermoMaster Performance Ratings

  • Recovery rates5 to 150 GPM
  • Storage capacitiesUp to 5,000 gallons
  • Steam supply pressureUp to 100 PSIG
  • Heated water outlet temperatureUp to 210°F
  • Design ratingASME Boiler & PV Code “U” stamped