Paul Mueller Company
Mueller Model D Fre-Heater
Mueller Fre-Heater Drawing
Mueller Fre-Heater Model DHS
Mueller Model D Fre-Heater
Mueller Fre-Heater Drawing
Mueller Fre-Heater Model DHS

Fre-Heater® Heat Recovery System

    • Dairy Farm
    • Food
    • Heat Transfer
    • Heat Transfer
    • Refrigeration & Chilling
    • Heat Recovery

  1. Features

    • Stainless steel outer jacket results in a rust-resistant exterior that requires no maintenance.
    • Mueller Temp-Plate® heat transfer surface cools the superheated refrigerant from the condensing units and harvests the system’s wasted heat energy.
    • Industrial-grade, fully insulated, glass-lined storage tank assures minimal heat loss and long-term reliability.
    • Factory-installed anode(s) provide superior galvanic corrosion protection for the water storage tank. Model D-120 has two anodes, and Models D-50 and D-80 each have one anode.
    • Complies with CSA regulations for the United States and Canada, with Canadian Registration Numbers available
    • The temperature of hot water depends on the size of the condensing units and the cooling time.
    • Channels recovered energy into single or multiple Fre-Heater units
    • Designed for 150 psi (10.34 bar) maximum water working pressure and 426 psi (29.37 bar) maximum refrigerant working pressure
    • Available in 50-, 80-, and 119-gallon (189.3-, 302.8-, and 450.46-liter) capacities
    • Model DE Fre-Heater offers all of the features of standard Model D Fre-Heaters with the addition of a 4,500-watt, 240-volt electric element.
      • Available in 80- and 119-gallon (302.8- and 450.5-liter) sizes
    • Five-year limited warranty protects your purchase.

  2. Specifications

    Model No.Part No.Water Connection - in (cm)No. of Refrig. CircuitsRefrig. Connection Size - in (cm)Per Circuit Refrig. Application CapacityHeight - in (cm)Diameter - in (cm)Approx. Shipping Weight - lbs (kg)
    D-50 8828038 0.75 (1.9) FPT 1 5/8 (1.6) ODM 0.5 to 4 ton 54 (137.2) 21.75 (55.3) 225 (102.1)
    D2-50 8828037 0.75 (1.9) FPT 2 5/8 (1.6) ODM 0.5 to 4 ton 54 (137.2) 21.75 (55.3) 225 (102.1)
    D-80 8828036 0.75 (1.9) 2 3/4 (1.9) ODM 1 to 5 ton 59 (149.9) 25.25 (64.1) 320 (145.2)
    D-120 8828032 1.5 (3.8) FPT 2 3/4 (1.9) ODM 1 to 7.5 ton 62 (157.5) 29.5 (74.9) 475 (215.5)
    D2-120 8828030 0.75 (1.9) FPT 2 1-1/8 (2.9) ODM 3 to 15 ton 62 (157.5) 29.5 (74.9) 475 (215.5)
    D2-120A** 8828031 0.75 (1.9) FPT 2 1-1/8 (2.9) ODM 3 to 15 ton 62 (157.5) 29.5 (74.9) 475 (215.5)
    DH-120 8828029 0.75 (1.9) FPT 2 1-5/8 (4.1) ODM 7 to 35 ton 62 (157.5) 29.5 (74.9) 475 (215.5)
    DE-120 8828034 0.75 (1.9) FPT 2 1-1/8 (2.9) ODM 3 to 15 ton 62 (157.5) 29.5 (74.9) 475 (215.5)
    DHS-120 8825141 1.25 (3.2) FPT 1 1-5/8 (4.1) ODM 14 to 70 ton 62 (157.5) 29.5 (74.9) 440 (199.6)
    DHSE-120A4 8825142 1.25 (3.2) FPT 1 1-5/8 (4.1) ODM 14 to 70 ton 62 (157.5) 29.5 (74.9) 440 (199.6)
    DHSE-120A6 8825213 1.25 (3.2) FPT 1 1-5/8 (4.1) ODM 14 to 70 ton 62 (157.5) 29.5 (74.9) 440 (199.6)
    DHSE-120B6 8825214 1.25 (3.2) FPT 1 1-5/8 (4.1) ODM 14 to 70 ton 62 (157.5) 29.5 (74.9) 440 (199.6)
    DA-120*** 8828033 0.75 (1.9) FPT 2 1 (2.5) MPT 5 to 25 ton 62 (157.5) 29.5 (74.9) 475 (215.5)

    ** Aquastat Included
    *** Ammonia Only

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