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EKW FX10 Installation Manual 50 HZ HYDRONIC HEAT PUMPS

EKW FX10 Installation Manual 50 HZ HYDRONIC HEAT PUMPS
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SKU11052
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Table of Contents

General Installation Information ............................................4

Accessories & Other Options ................................................5

Potable Water Systems .....................................................6-7

Open Loop Systems ..............................................................8

Earth Coupled Systems .........................................................9

Electrical .........................................................................10-11

Small EKW Setup/Operation ...............................................12

1. Application Overview .......................................................14

2. Inputs and Outputs Configuration ....................................14

3. Sequence of Operation ...................................................15

3.1. Power Fail Restart .................................................15

3.2. Random Start Delay ..............................................15

3.3. Compressor Fixed On Delay Time ........................15

3.4. Compressor Minimum On Delay ...........................15

3.5. Compressor Short Cycle Delay Time ....................15

3.6. Heating Cycle ..................................................15-16

3.7. Cooling Cycle ........................................................16

3.8. Emergency Shutdown ...........................................17

3.9. Lockout Mode ........................................................17

3.10. Entering Load Water Temperature (AI-1) ............18

3.11. Leaving Load Water Temperature (AI-2) .............18

3.12. Entering Source Water Temp (AI-3) ....................18

3.13. Source Low Water Coil Temperature Limit (AI-4) ..18

3.14. Load Low Water Coil Temperature Limit (AI-5) ...18

3.15. Leaving Source Water Temp (AI-6) .....................18

3.16. Compressor Proving (BI-1) .................................18

3.17. Emergency Shutdown (BI-2) ...............................18

3.18. Low Pressure Switch (BI-3) ................................18

3.19. Source Side Low Water Coil Temperature Limit Select (BI-4) ...................................19

3.20. Load Side Low Water Coil Temperature Limit Selection (BI-5) ....................................................19

3.22. Y1/System Enable Command (BI-7) ...................19

3.23. Source Flow Proving Switch (BI-8) .....................19

3.24. Aqua-stat O/Heating-Cooling Select Command (BI-9) ................................................19

3.27. Load Flow Proving Switch (BI-12) .......................20

4. Outputs ............................................................................20

4.1. Reversing Valve (BO-1) .........................................20

4.2. Compressor (BO-2) ...............................................20

4.3. Reversing Valve (BO-3) .........................................20

4.4. Secondary Unit Enable (BO-4) ..............................20

4.5. Secondary Unit S-Plan Comfort Select Enable (BO-5) ..............................................................20

4.6. Alarm Output (BO-6) .............................................20

4.7. Accessory Output 1/Source Pump Control (BO-7) ..............................................................21

4.8. Accessory Output 2/Load Pump Control (BO-8) ..............................................................21

Unit Startup .........................................................................22

ARI/ISO/BS EN Ratings ......................................................23

Capacity Data ................................................................24-39

Source Flow Rates (L/s) ......................................................40

Pressure Drop (kPa) ............................................................40

Troubleshooting ...................................................................41

Preventive Maintenance ......................................................42

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