Section 3.0 – Water Temperature Limit and Three-Way Heat Reclaim Valve
3.1 Solenoid Valve Installation ................................................................................................18
Table 2: Three-Way Heat Reclaim Valves ................................................................................. 18
Figure 16: Three-Way Heat Reclaim Valves ...............................................................................18
Figure 17: Suggested Refrigeration Piping of Valve for Typical Model “D” and “DE” Fre-Heater System .............. 19
3.2 Aquastat Installation ...................................................................................................... 19
Figure 18: Suggested Aquastat Piping ....................................................................................19
3.3 Electrical Installation ......................................................................................................20
Figure 19: Wiring of Electrical Components ..............................................................................20
3.4 Checkout and Test Run ....................................................................................................20
Figure 20: Three-Way Heat Reclaim Valve Dimensions .................................................................21
Table 3: Three-Way Heat Reclaim Valve Dimensions Chart ............................................................. 21
Table 4: Discharge Check Valve Sizing ....................................................................................21
Table 5: Capacity (Tons) Chart for Valve Ports ...........................................................................22
Section 4.0 – Btuh Estimated Capacity
4.1 Btuh Estimated Capacity Information ....................................................................................23
Table 6: Fre-Heater Estimated Per Circuit Btuh Recovery ...............................................................23
Section 5.0 – Fre-Heater Equipment Markings
5.1 Label No. 8801149, Warning: Disconnect Power Before Servicing .......................................................24
5.2 Label No. 8802732, Warning: Pressure Relief Valve Must Be Installed ..................................................24
5.3 Label No. 8801888, Warning: Hot Water ..................................................................................24
5.4 Label No. 8800996, Copper Conductor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.5 Label No. 3791, Hot ........................................................................................................25
5.6 Label No. 3792, Cold .......................................................................................................25
5.7 Label No. 9901403, In ......................................................................................................25
5.8 Label No. 9901404, Out ....................................................................................................25
5.9 Label No. 8800215, Pressure Relief .......................................................................................25
5.10 Label No. 8822705, CSA LR 67608 and USK .............................................................................25
5.11 Label No. 8820623, Electrical Warning ...................................................................................25
5.12 Label No. 8801408, Attention: Water Connections and Relief Valve .....................................................26
5.13 Label No. 31246, Mueller Name Plate .....................................................................................26
5.14 Label No. 8823999, Attention: Control Circuit Wiring Specifications ..................................................26
5.15 Label No. 8824716, HFC Refrigerant ......................................................................................26
5.16 Label No. 8820454, Important! Dry Nitrogen Gas ........................................................................27
5.17 Label No. 8803611, Fre-Heater Model “DE” Data Plate ...................................................................27
5.18 Label No. 31433, Fre-Heater Model “D” Data Plate .......................................................................27
5.19 Label No. 8824816, CRN ...................................................................................................27
Section 6.0 – Appendix A
6.1 Thermal Expansion Tank Installation for Dairy Farm Applications .....................................................28
Figure 21: Thermal Expansion Tank Diagram ............................................................................28
Table of Contents
Mueller Model D Fre-Heater Installation and Operation Manual Eective March 1, 1993
Part No. 8800430 Revised November 6, 2019
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