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Service Section Technical Training December 2005 PowerPoint Presentation
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Service Section Technical Training December 2005

Service Section Technical Training December 2005

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Service Section Technical Training December 2005

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  1. Service Section Technical Training December 2005

  2. Horizontal Water Source Heat Pump

  3. 4 Way Valve Water inlet Water-to-refrigerant heat exchanger Water outlet Compressor Finned-tube heat exchanger Expansion device Horizontal Water Source Heat Pump Introduction: What is Water Source Heat Pump?

  4. Horizontal Water Source Heat Pump Categories: 1. Water Loop Heat Pump System 2. Ground Water Heat Pump System 3. Surface Water Heat Pump System 4. Ground Coupled Heat Pump System

  5. Horizontal Water Source Heat Pump Water Loop Heat Pump • Most common configuration • Re-circulating water loop • Cooling tower & boiler

  6. Horizontal Water Source Heat Pump Ground Water Heat Pump • Ground water from well • Drained back to well, drain, stream or lake • Stable throughout the year • Limited by availability of water table and aquifers in the ground

  7. Horizontal Water Source Heat Pump Surface Water Heat Pump • Open or close loop • Open – water being returned back to source or drain • Closed – water being re-circulated in the closed loop • Stable throughout the year

  8. Horizontal Water Source Heat Pump Ground Coupled Water Heat Pump • HE is buried into the earth • Installation cost is high • Massive & stable thermal capacity

  9. Horizontal Water Source Heat Pump Water Loop Heat Pump System

  10. air separator expansion tank cooling tower pumps plate-and-frame heat exchanger water distribution loop boiler heat pumps Water Loop Heat Pump System

  11. cooling tower ON 32ºC [90ºF] boiler off heat pumps in cooling mode Water Loop Heat Pump System Summer Operation

  12. cooling tower OFF 16ºC [60ºF] boiler on heat pumps in heating mode Water Loop Heat Pump System Winter Operation

  13. Water Loop Heat Pump System Spring and Fall Operation cooling tower OFF boiler off heat pumps in heating mode heat pumps in cooling mode

  14. Water Loop Heat Pump System General Benefits of a WSHP System • Heat recovery offers energy savings • Individual space control • Performs both cooling and heating • Flexibility – additional of heat pump • Small amount of floor space required • Unit failure does not affect the rest of the system

  15. Horizontal Water Source Heat Pump WH-B/BR Series

  16. Content 1. Features 2. Handset & PCB 3. Control Algorithm 4. Installation

  17. 1. Features 1.1 Product Information 1.2 Left / Right Handling 1.3 Low Height Profile 1.4 Less Vibration Design 1.5 No Outdoor Fan 1.6 Application Flexibility 1.7 Part Loading Capability 1.8 Sequencing Control of Compressor

  18. 1. Features 1.1 Product Introduction - Water Cooled Product - Packaged types - Capacity: 3.4kW – 23.0kW - 11,600 Btu/hr to 78,500 Btu/hr

  19. 1. Features 1.2 Left / Right Handling Left Handling Right Handling Product Nomenclature: e.g. WH 12B/BR – AXAA WH 12B/BR – AXLA

  20. 1. Features 1.3 Low Height Profile • Flexibility in installation • WH 11B/BR using Horizontal Compressor Height from 250mm to 500mm

  21. 1. Features 1.4 Less Vibration Design • Double isolation Panel • Reduce noise and vibration transmission Compressor Upper Panel Grommet Lower Panel

  22. 1. Features 1.5 No Outdoor Fan • Using tube in tube heat exchanger • No visible outdoor unit

  23. 1. Features 1.6 Application Flexibility • Wide operating range of temperature Cooling Mode Minimum EWT = 13°C Maximum EWT = 40°C 13°C  EWT  40°C Heating Mode Minimum EWT = 15°C Maximum EWT = 32°C 15°C  EWT  32°C

  24. 1. Features 1.6 Application Flexibility

  25. 1. Features Comp. Loading % 100 50 0 Step Capacity 1.7 Part Loading Capability • Only available for model WH 25B/BR ~ 70B/BR • 2 stage loading capacity at 50% ~ 100% • Less noise during low load condition • Energy saving

  26. 1. Features 1.8 Sequencing Control of Compressor • Only available for model WH 25B/BR ~ 70B/BR • Accumulative compressor operating time can be monitored • Even loading of the compressor • Improve compressor reliability

  27. 2. Handset & PCB 2.1 Handset 2.2 PCB 2.3 Wiring Diagram

  28. IR Receiver Temperature Display ON/OFF Switch Fan Speed Timer Switch Setting Operating Mode “Sleep” Function 2. Handset & PCB 2.1 Handset SLM15A

  29. IR Receiver Temperature Display Temperature Setting Sleep Mode ON/OFF Switch Fan Speed Operating Mode Clock Setting Timer Setting 2. Handset & PCB 2.1 Handset APW04A

  30. 2. Handset & PCB 2.1 PCB APM01CB APM02D Single Compressor Twin Compressor

  31. SLM15A APW04A E3 E2 WLS E1 LIVE CN2 CN4 CN1 OET OD ID ROOM Dip Switch FS TRANSFORMER L WV HEAT OFL HF MF LF AS OFH WP N LIVE COMPRESSOR OLP 4 SH C WP S H COMP M FM 4wv L R N HEATER E N L 2. Handset & PCB 2.1 Wiring Diagram APM01CB

  32. N N LIVE COMP1 KM1 KM2 WLS EN-SAVE COMP2 COMP1 FM COMP2 KM1 HP2 OVHT/HP2 HT/EV1 KM2 LP2 FREZ/LP2 EV2 K3 FSW FLOW K4 C C 4WV2 S S OV-PUMP 4WV1 R R OV-FAN A-HAT OV-COMP1 ELECTRICAL HEATER PUMP PUMP K3 K2 K1 K1 K2 K3 OV-COMP2 K3 HP1 H/FAN HP1 LP1 LP1 M/FAN K4 SET/SF L/FAN 4wv 4wv WV AL/OUT N-COM E N L AL/IN 2. Handset & PCB 2.1 Wiring Diagram APM02D Single Phase

  33. N N LIVE COMP1 KM1 KM2 WLS COMP2 EN-SAVE COMP1 COMP2 FM KM1 HP2 OVHT/HP2 HT/EV1 KM2 LP2 FREZ/LP2 EV2 K3 FSW FLOW K4 C C 4WV2 S S OV-PUMP 4WV1 R R OV-FAN A-HAT OV-COMP1 ELECTRICAL HEATER K3 K1 K2 K3 OV-COMP2 PUMP PUMP K3 K2 K1 HP1 HP1 H/FAN LP1 LP1 M/FAN K4 SET/SF L/FAN WV 4wv 4wv AL/OUT N-COM S R N E T AL/IN 2. Handset & PCB 2.1 Wiring Diagram APM02D Three Phase

  34. 3. Control Algorithm 3.1 Hardware Setting 3.2 Unit ON / OFF 3.3 Sleep Function 3.4 Indoor Fan Control 3.5 Operating Modes 3.6 Protection 3.7 Self Diagnostic

  35. 3. Control Algorithm 3.1 Hardware Setting – Mode Selection APM01CB

  36. 3. Control Algorithm 3.1 Hardware Setting – Mode Selection APM02D

  37. 3. Control Algorithm 3.2 Unit ON / OFF • 2 ways to turn on / off the system: • (a) On/Off Triggering • On/Off Button on LCD remote controller • (b) Real time On/Off Timer • Based on internal real time clock • The timer settings are kept so that similar switches can occur 24 hours later • If On/Off Button on the LCD remote controller being pressed, the timer will be reset

  38. 3. Control Algorithm 3.3 Sleep Function • Only available for COOL, HEAT & AUTO mode • This function will increase (cooling mode) or decrease (Heating mode) the set temperature with time

  39. 01/212 Hours Ts + 2 Ts + 1 Ts + 1/2 Ts SLEEP set on SLEEP set off 3. Control Algorithm 3.3 Sleep Function (Cool Mode)

  40. 3. Control Algorithm 3.3 Sleep Function (Heat Mode) SLEEP set on SLEEP set off Ts Ts - 1 Ts - 2 Ts - 3 01/212 Hours

  41. 3. Control Algorithm 3.4 Indoor Fan Control • Indoor fan speeds are LOW, MEDIUM, HIGH or AUTO FAN in COOL, HEAT and AUTO modes. • In FAN mode, only HIGH, MEDIUM and LOW speeds are allowed.

  42. 3. Control Algorithm 3.5 Operating Modes APM01CB: • Compressor will cut in if Tr – Ts > 0.5°C • Compressor will cut out if Ts - Tr > 1.0˚C APM02D: • 1 compressor will cut in if Tr – Ts > 1.0°C • 2 compressor will cut in if Tr – Ts > 2.0°C • 1 compressor will cut out if Tr = Ts • 2 compressor will cut out if Ts – Tr > 1°C Note: Tr = Room Temperature Ts = Set Temperature 3.5.1 Cool Mode

  43. 3. Control Algorithm 3.5 Operating Modes APM01CB: • Compressor will cut in if Ts – Tr > 1.0˚C • Compressor will cut out if Tr – Ts > 1.5°C APM02D: • 1 compressor will cut in if Ts – Tr > 1.0°C • 2 compressor will cut in if Ts – Tr > 2.0°C • 1 compressor will cut out if Ts = Tr • 2 compressor will cut out if Tr – Ts > 1.0°C Note: Tr = Room Temperature Ts = Set Temperature 3.5.2 Heat Mode - Heat Pump Model

  44. 3. Control Algorithm 3.5 Operating Modes • To run heat mode, 4-way valve MUST turn ON. • 4-way valve can only be changed from ON to OFF or vice-versa 55 +/- 5 seconds after the compressor has cut out. • Compressor cut in after 4s. 3.5.2 Heat Mode (a) 4-Way valve Changing

  45. 3. Control Algorithm 3.5 Operating Modes APM01CB: • Thermostat cut in cycle: - If Tin coil > 40˚C, indoor fan run at user set speed - If Tin coil > 30˚C, indoor fan run at low speed - If Tin coil < 15˚C, indoor fan stop • Thermostat cut off cycle: - If Tin coil > 40°C, indoor fan run at user set speed - If Tin coil > 37°C, indoor fan run at low speed - If Tin coil < 30°C, indoor fan stop Note : Tin coil = Indoor Coil Temperature 3.5.2 Heat Mode (b) Hot Keep / Start

  46. 3. Control Algorithm 3.5 Operating Modes APM02D: • Thermostat cut in cycle: - If either Tin coil > 37˚C, indoor fan run at user set speed - If both compressors cut out, and Tin coil < 30˚C, indoor fan stop Note : Tin coil = Indoor Coil Temperature 3.5.2 Heat Mode (b) Hot Keep / Start

  47. AUTO Fan Speed during COOL mode Tr oC +1.5 +1.0 +0.5 Ts -0.5 -1.0 H M L M H M L L M H COMP ON COMP OFF COMP ON 3. Control Algorithm 3.5 Operating Modes 3.5.3 Auto Fan

  48. 3. Control Algorithm 3.5 Operating Modes 3.5.3 Auto Fan AUTO Fan Speed during HEAT mode Tr oC +1.5 +1.0 Ts -1.0 -2.0 M H M L M H M L COMP OFF COMP OFF COMP ON

  49. 3. Control Algorithm 3.5 Operating Modes Under Auto mode, COOL & HEAT mode can be changed automatically depending on room & set temperature. 3.5.4 AUTO Mode (a) If the present Auto mode is COOL, ( Mode Set Temperature = User Set Temperature) COOL HEAT IF • Tr <= Ts - 3.5°C AND • The compressor has cut out for at least 10 min.

  50. 3. Control Algorithm 3.5 Operating Modes 3.5.4 AUTO Mode (b) If the present Auto mode is HEAT, ( Mode Set Temperature = User Set Temperature) HEAT COOL IF • Tr > Ts + 3.5°C AND • The compressor has cut out for at least 10 min.