MAXI-FLO ® STAINLESS STEEL AND TITANIUM HEAT EXCHANGER FOR SWIMMING POOLS & SPAS INSTALLATION AND MAINTENANCE MANUAL WARNING NOTICE Before proceeding with installation and operation, read entire manual carefully. Failure to do so can cause injury or property damage. Warranty Registration Card must be filled out by the customer and mailed within thirty (30) days of installation in order to gain warranty coverage.
Table of Contents PRODUCT & SAFETY INFORMATION INSTALLATION Code Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Locating the Maxi-Flo Heat Exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Automatic Chlorinators and Chemical Feeders. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Operating Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product & Safety Information DANGER WARNING Prolonged Immersion May Cause Hypothermia When using this equipment, basic safety precautions should always be followed, including the following: Hypothermia occurs when the internal temperature of the body reaches a level several degrees above the normal body temperature of 98.6ºF. The symptoms of hypothermia include dizziness, fainting, drowsiness, lethargy, and an increase in the internal temperature of the body.
Installation CODE COMPLIANCE WARNING Maxi-Flo Heat Exchanger installation must conform with the instructions in this manual and where applicable: • High chemical concentrations from improperly adjusted feeders and chlorinators can cause rapid corrosion to the heat exchanger. Bypassing the heat exchanger, is recommended, prior to stabilization of pH at 7.2 to 7.8 level and chlorine residual at 1.0 to 3.0 ppm. Local, state, provincial, and national codes, laws, regulations and ordinances.
Installation WARNING GENERAL PIPING • • Typical pool or spa piping is plumbed as follows (see Figures 1 & 2): - Inlet of the filter is piped directly to the discharge side of the filter pump. - Outlet of the filter is piped to the inlet side of the Maxi-Flo® heat exchanger. - The return line to the pool, spa or chlorinator is piped to the outlet of the Maxi-Flo® heat exchanger. Water temperatures in excess of 104ºF is considered unsafe for all persons.
Installation • Not maintaining proper chemical levels and/or not changing the water on a regular basis can promote unsanitary water conditions. SPRING AND FALL OPERATION During cold periods (those above freezing weather) maintain a minimum temperature setting (65ºF to 70ºF) for periodic usage. This will prevent the water from becoming chilled and will reduce the amount of time to reheat to the desired temperature.
1. 2. 3. 4. 5. Maxi-Flo Heat Exchanger Boiler Boiler Water Circuit Thermostat or Aquastat Isolation Valve 2 7 7 16 3 Heating zones return Heating zones 16 supply 5 6. 7. 9. 10. 12. 5 13 6 Stainless Steel 1 12 Check Valve Circulators Filtration Pump Flow Switch Stainless Steel 5 5 14 5 PVC PVC 5 17 9 4 From the pool 10 To the pool Thermometer Drain Valve Flow Control Valve Check Valve / Anti-siphon Device Chlorinator 13. 14. 16. 17. By Pass Piping 13 Fig.
1. 2. 3. 4. 5. Maxi-Flo Heat Exchanger Boiler Boiler Water Circuit Thermostat or Aquastat Isolation Valve 2 7 Heating zones 16 supply 3 115V 6 5 Heating zones return 16 5 13 6. Check Valve 7. Circulators 9. Filtration 10. Pump 11. Flow Switch 6 Stainless Steel Stainless Steel 1 5 12 14 PVC 5 P VC 4 5 17 9 Chlorinator 10 From the Pool To the pool 13. Thermometer 14. Drain Valve 16. Flow Control Valve 17. Check Valve / Anti-siphon Device By Pass Piping 13 Fig.
Installation Tekmar 150 Thermostatic Control Flow Switch McDonnell Miller FS4-3 PWM No power 24V only 4 on 1Power2 3 off C R Com N/O H 120 N R C 5 N/C 6 7 Sensor G Honeywell R8285D Transformer / Relay 1 3 4 6 To Boiler Thermostat Terminals Circulator 24 V Low Voltage Wiring 120 V High Voltage Wiring FIG. 3-FIELD WIRING MF 135T or MF-260T Heat Exchanger PVC Male Nipple Rubber Coupling Note: Recommend pipe thread sealant - Loctite 30561 FIG.
Installation Thermal Output Maxi-Flo Stainless Steel Heat Exchangers Thermal Hot Water Flow Heat Transfer Cold Water Flow Output GPM Pressure Drop GPM Pressure Drop Surface Btu/hr Sq. Ft. Ft Ft Model No. 95,000 7 6 77 6 2 MF-135 135,000 7 2 55 3 3 MF-200 200,000 8 2 65 5 5 MF-260 260,000 400,000 9 2 77 6 6 13 3 93 8 12 MF-80 MF-400 Dimensions Model No.
Installation Thermal Output Maxi-Flo Titanium Heat Exchangers Model No. MF-135T MF-260T Thermal Hot Water Flow Heat Transfer Cold Water Flow Output GPM Pressure Drop GPM Pressure Drop Surface Btu/hr Sq. Ft. Ft Ft 135,000 9 11 92 24 5 2 260,000 13 Model No. A B C D E F MF-135T 5 1/2" Weight lb 5" 11/2" 20" 4 1/4" 1" 4 MF-260T 5 1/2" 5" 11/2" 29 1/2" 4 1/4" 1" 6 92 3 6 Dimensions B Pool Connection "C" E Boiler Connection "F" D All Bracket Holes 1/4" I.D.
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