CONTENTS 1. Preface 2. Specifications 2.1 Technical data for the swimming pool heat pump unit 2.2 Operating range 2.3 Dimensions 3. Installation and connection 3.1 Functional diagram 3.2 Heat pump unit 3.3 Hydraulic connection 3.4 Electrical connection 3.5 Initial start-up 3.6 Water flow setting 4.
1. PREFACE We thank you for purchasing this Hayward swimming pool heat pump unit. This product was designed according to strict manufacturing standards to satisfy the required quality levels. This manual includes all of the necessary information concerning installation, debugging and maintenance. Please attentively read this manual before opening the unit or before carrying out any maintenance operations on it.
The maximum heating temperature is set at 32°C to prevent damage to the liners. Hayward cannot be held responsible if used at a temperature above +32°C.
2. SPECIFICATIONS (continued) 2.3 Dimensions Models: ENP1MS/ENP2MS Unit: mm Water inlet Water outlet Drainage Frontal view 1025 Overhead view Models: ENP3MS/ENP4MS/ENP5MS Unit: mm ENP4TS/ENP5TS Water inlet Water outlet Drainage 1140...
3. INSTALLATION AND CONNECTION 3.1 Functional Diagram Filter Water Inlet valve By-pass Pump valve filtration Water outlet Water outlet Chlorinator cell valve Pool (or other treatment) Note: The swimming pool heat pump unit is sold without any treatment or filtration equipment. The components presented in the diagram are spare parts to be supplied by the installer.
3. INSTALLATION AND CONNECTION (continued) It is advised to install the unit on a dissociated cement block or a mounting bracket designed for this use and to set up the unit on the supplied rubber bushing (fastenings and washers not supplied). The maximum installation distance between the unit and the swimming pool is 15 metres.
3. INSTALLATION AND CONNECTION (continued) 3.4 Electrical connection Electrical installation and wiring for this equipment must be in conformity with local installation standards. NF C15-100 BS7671:1992 DIN VDE 0100-702 EVHS-HD 384-7-702 ÖVE 8001-4-702 MSZ 2364-702/1994/MSZ 10-553 1/1990 UNE 20460-7-702 1993, MSA HD 384-7-702.S2 RECBT ITC-BT-31 2002 Wiring Rules + IS HD 384-7-702...
3. INSTALLATION AND CONNECTION (continued) The electrical power supply must have, when appropriate, a fuse protection device like a feed motor (aM) or D curve circuit breaker as well as a differential circuit breaker 30mA (see following table). Models ENP1MS ENP2MS ENP3MS ENP4MS ENP5MS ENP4TS ENP5TS 230 V~...
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3. INSTALLATION AND CONNECTION (continued) 7) Ensure that no ALARM code is displayed when the unit is ON (see troubleshooting guide). 8) Set the water flow using the by-pass valve (see § 3.6 and 2.1), as provided for by each model, to obtain an Entry/Exit temperature of 2°C. 9) After running for several minutes, verify that the air exiting the unit is cool (between 5 and 10°).
3. INSTALLATION AND CONNECTION (continued) 3.6 Water flow setting With the water entry and exit valves being open, adjust the by-pass valve in order to obtain a difference of 2°C between the inflow and outflow temperature (see principle diagram § 3.1). You can verify the switch by seeing the entry/ exit temperatures directly on the control panel.
4. USER INTERFACE 4.1 General presentation The heat pump is equipped with a digital control panel with a touch screen, electronically connected and pre-set at the factory in heating mode. Symbol Cooling Mode Symbol Heating Mode Automatic mode Clock and timer settings MO D E Selection and settings button S E T...
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4. USER INTERFACE (continued) OFF Mode When the heating pump is in sleep mode (OFF Mode) “OFF” is displayed on the command screen. ON Mode When the heating pump is running or regulating (ON Mode), the inlet and outlet water temperatures are displayed on the command screen.
4. USER INTERFACE (continued) 4.2 Clock settings Press 2 times on , the blinking time display then set the time with the arrows then press one more time to set the minutes with the arrows . Press to validate. Note: The settings will be automatically saved if no button is pressed after 5 seconds, if not press to validate.
4. USER INTERFACE (continued) Turn off the Timer (Timer ON and OFF) / Off and On 1) Press 2 seconds, Timer “ON”. 2) Press to delete the programme. 3) Press 2 seconds timer “ON” blinks then press 2 seconds, Timer “OFF” blinks.
4. USER INTERFACE (continued) 4.5 Settings and visualisation from the set point (desired water temperature) In Mode “OFF” and Mode “ON” Press the buttons to define the desired set point. The settings are made with a precision of 0.5 °C. It is recommended to never surpass 30°C to avoid alteration of the liners.
5. MAINTENANCE AND WINTERISING 5.1 Maintenance These maintenance operations must be carried out once per year in order to guarantee the longevity and the good working condition of the heat pump. • Clean the coil with the help of a soft brush or jet of air or water (Warning, never use a high pressure cleaner).
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6. APPENDIX (continued) ENP3MS Mark Ref. Description Mark Ref. Description HWX20000220169 Fan protection grille HWX20003603 Low pressure switch Air temperature HWX20002705 Fan blade HWX20003242 sensor HWX20013328 Fan motor HWX351212001 Fin coil HWX320922015 Front panel HWX320921021 Electrical box cover HWX320921025 Support panel HWX320822008 Protection cover HWX320921092...
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6. APPENDIX (continued) ENP4MS Mark Ref. Description Mark Ref. Description HWX95005310247 LCD controller HWX200036005 Flow switch HWX32009210188 Fan motor bracket HWX20013605 High pressure switch HWX20000220169 Fan protection grille HWX20003603 Low pressure switch HWX20000270004 Fan blade HWX20011491 4 ways valve HWX320922015 Front panel HWX32009120019 Fin coil HWX20000330134 Fan motor...
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6. APPENDIX (continued) ENP5TS Mark Ref. Description Mark Ref. Description HWX200022068 Protection cover HWX9505311458 PCB Board HWX95005310247 LCD Controller HWX200036005 Flow switch HWX20000220169 Fan protection grille HWX20003242 Water inlet Sensor Teminal block 3 HWX20003933 HWX20003242 Water outlet sensor connections HWX320922015 Front panel HWX320921021 Electrical box HWX20013328 Fan motor...
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6. APPENDIX (continued) Certain operations must be carried 6.4 Troubleshooting guide out by an authorized technician. Problem Error codes Description Solution The sensor is open or presents Water inlet sensor defect. Verify or replace the sensor. a short-circuit. The sensor is open or presents Water outlet sensor defect.
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