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Service Section Technical Training December 2005

Service Section Technical Training December 2005. Loop Water Controller (LWC). Loop Water Controller. Water Source Solution. WSHP, WH-B/BR Series. Loop Water Controller. Loop Water Controller. Expansion tank. cooling tower. pumps. looping water. boiler. Water source heat pumps.

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Service Section Technical Training December 2005

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  1. Service Section Technical Training December 2005

  2. Loop Water Controller (LWC)

  3. Loop Water Controller Water Source Solution WSHP, WH-B/BR Series Loop Water Controller

  4. Loop Water Controller Expansion tank cooling tower pumps loopingwater boiler Water source heat pumps

  5. Loop Water Controller

  6. Loop Water Controller LWC Control Box

  7. Loop Water Controller LWC Wiring Diagram

  8. Content 1. Features 2. System Specification 3. Operation

  9. 1. Features - Loop Circulating Pump Control - Heat Rejection & Addition Output Stages - Sensor - Alarm / Indication - Water Flow Switch Input - High / Low Water Temp Protection - Pre-cool / Pre-heat Protection - Outdoor (OD) Air Reset - Password Protection

  10. 1. Features - Loop Circulating Pump Control > Allows 2 loop circulating pumps with manual or auto lead lag control where operation is interchangeable - Heat Rejection & Addition Output Stages > Total 12 sets of data output can be pre-set as heat addition or heat rejection stages - Sensor: (i) Outdoor (OD) Air Sensor (ii) Water Sensor > 2 types of sensors used to sense the OD air temperature and water temperature

  11. 1. Features - Alarm / Indication > Output signal if error occurs in the system > Buzzer in the LCD panel activated when error occurs - Water Flow Switch Input > To detect the availability of water supply to the system - High and Low Water Temperature Protection > Measured by water sensor > When water temperature reached too high / low temperature, send signal and shut off the system

  12. 1. Features - Pre-cool & Pre-heat Protection > To provide protection when the temperature exceeding the too high / low temperature (when system is OFF) - Outdoor (OD) Air Reset > The heat addition ON / OFF limit setting of the system is able to be increased in respond to a drop in the OD air temperature - Password Protection > Password entry needed for authority to change / check the setting and configuration of the system

  13. 2. System Specification 2.1 System On/Off 2.2 Pump Control Function 2.3 12 Stages of Heat Rejection & Heat Addition Control 2.4 Pre-cool & Pre-heat Protection 2.5 Outdoor (OD) Air Reset 2.6 Emergency Protection 2.7 Error Description

  14. 2. System Specification 2.1 System On/Off 2 ways to turn on/off the system via remote ON/OFF switch (S1): (a) Standard Switch (b) Smart Manager If the remote ON/OFF switch (S1) is closed – System ON If the remote ON/OFF switch (S1) is opened – System OFF

  15. 2. System Specification 2.2 Pump Control Function 2 Mode Available: i) Automatic Mode ii) Manual Mode

  16. 10s after System On Normal Check water flow for 15s Error Sound Alarm Lead Pump Off Lag Pump On Normal Error Check water flow for 15s System Off Sound Alarm 2. System Specification 2.2 Pump Control Function i) Automatic Mode:

  17. 2. System Specification 2.2 Pump Control Function ii) Manual Mode: • Only 1 pump is operates • Either 1 pump can be set to operate as the system is on. • The checking on the water flow switch is the same as the lead pump in automatic mode

  18. 2. System Specification 2.3 12 Stages of Heat Rejection & Heat Addition Control • 12 Output contacts (198-242 VAC) to switch ON/OFF the boiler and cooling tower. • Each contact must be pre-set from the LCD keypad to select it either as a heat addition or heat rejection contact • Heat rejection and heat addition temperature setting shall be distributed in sequence and continuous as pre-set from the LCD keypad

  19. 2. System Specification 2.3 12 Stages of Heat Rejection & Heat Addition Control Example:

  20. 2. System Specification 2.3 12 Stages of Heat Rejection & Heat Addition Control Condition of the above example setting: (i) 4 heat addition output stages and 8 heat rejection output stages (ii) Temperature hysterisys of 3°C (adjustable) (iii) Heat addition stage temperature: 18°C Heat rejection stage temperature: 30°C

  21. 2. System Specification 2.3 12 Stages of Heat Rejection & Heat Addition Control Example 1: ON Temperature set-pointSelection OUT1 17°C Heat add stage 2 OUT2 18°C Heat add stage 1 • The first boiler will cut in when the Tw drops below 18°C • The second boiler will cut in when the Tw is further reduce to 17°C Note: Tw = water temperature

  22. 2. System Specification 2.3 12 Stages of Heat Rejection & Heat Addition Control Example 2: ON Temperature set-pointSelection OUT3 30°C Heat reject stage 1 OUT4 31°C Heat reject stage 2 • The first cooling tower will run when the Tw goes higher than 30°C • The second cooling tower will run when the Tw is further increase to 17°C Note: Tw = water temperature

  23. 2. System Specification 2.3 12 Stages of Heat Rejection & Heat Addition Control Example 3: ON set-pointOFF set-pointSelection OUT1 17°C 20°C Heat add stage 2 OUT2 18°C 21°C Heat add stage 1 OUT3 30°C 27°C Heat reject stage 1 OUT4 31°C 28°C Heat reject stage 2 • If Tw increase from 18°C to 21°C, the boiler will turn off • If Tw decrease from 30°C to 27°C, the cooling tower will turn off • If 18°C < Tw < 30°C, both cooling tower or boiler will not run Note: Tw = water temperature

  24. Close Heater 3 Open Heat-reject 3 Open Heater 3 Close Heater 2 Open Heater 2 Open Heat-reject 2 Close Heater 1 Open Heater 1 Open Heat-reject 1 Pre_Th + 2 Pre_Tc + 5 Pre_Th Pre_Tc + 3 Pre_Th - 3 Pre_Tc Pre_Th - 5 Pre_Tc -2 Pre_Tc: Pre_Cool Temperature (Pre_Tc = Too low protect temperature) Pre_Th: Pre_Heat Temperature (Pre_Th = Too high protect temperature) 2. System Specification 2.4 Pre-cool & Pre-heat Protection • Function when the system is OFF • The function will active according to the Too High / Low temperature set • Pre-cool / heat temperature hysterisys = 5°C (fixed)

  25. 2. System Specification 2.4 Pre-cool & Pre-heat Protection Example: Too High Temperature: 43°C (adjustable) Too Low Temperature: 10°C (adjustable) * When the water temperature is at or below 0°C, all the heating stages will be ON, regardless the ON/OFF temperature setting

  26. OD Air Reset Range (°C) 0 - 5°C 0 8 16 OD Air Temperature (°C) -17 -8 2. System Specification 2.5 Outdoor (OD) Air Reset • Applicable for Heat Add set points at very low outdoor air temperature (start at 16°C) • OD reset range: 1 – 5 °C (adjustable)

  27. System On No TW≤ TLW ? Yes Sound Alarm System Continue Running No Yes System Off Sound Alarm TW≤ TTLW ? 2. System Specification 2.6 Emergency Protection 2.6.1 Low / Too Low Temp Protection Note: TW = Water Temp TLW = Low Water Temp TTLW = Too Low Water Temp

  28. System On No TW≥ THW ? Yes Sound Alarm System Continue Running No Yes System Off Sound Alarm TW≥ TTHW ? 2. System Specification 2.6 Emergency Protection 2.6.2 High / Too High Temp Protection Note: TW = Water Temp THW = High Water Temp TTHW = Too High Water Temp

  29. 10s after System On Normal Check water flow for 15s Error Sound Alarm Lead Pump Off Lag Pump On Normal Error Check water flow for 15s System Off Sound Alarm 2. System Specification 2.6 Emergency Protection 2.6.3 Loss of Flow

  30. 2. System Specification 2.6 Emergency Protection 2.6.4 Sensor Error • Either Water Sensor or OD Air Sensor fail will sound the alarm • System will be shut off

  31. 2. System Specification 2.7 Error Description

  32. 3. Operation 3.1 LCD Panel Interface & Setting 3.2 Operation Limits 3.3 Default Setting Reset Switch

  33. 3. Operation 3.1 LCD Panel Interface & Setting UP DOWN LEFT RIGHT ESC Enter

  34. Status Setting Main Menu Test Error ESC 3. Operation 3.1 LCD Panel Interface & Setting 3.1.1 Main Menu By pressing the Button

  35. 1# : On (Off) Pump 2# : On (Off) Water Flow: Yes (No) Water Temp: xxx°C (°F) Status Temp OD Temp: xxx°C (°F) 1# : Cool (Heat) On (Off) Output Stage On : xxx Off : xxx°C (°F) 2# : Cool (Heat) On (Off) On : xxx Off : xxx°C (°F) (3-12#): Unused Pump1: xxhr Pump Run Time Pump2: xxhr ESC 3. Operation 3.1 LCD Panel Interface & Setting 3.1.2 Status

  36. 3. Operation 3.1 LCD Panel Interface & Setting 3.1.3 Setting • Password Protected • During power ON, the ‘Setting’ can only be viewed. • The system MUST be turned OFF in order to change the Setting parameters.

  37. Password Protected Mode: Auto (Manual) Pump Lead Pump: 1# (2#) Switch Cycle: xxxhr Setting Output Config Pump Switch Check Time: xxxs Temp Reset Run Time Min Run TM: xxxs ODA reset Enable (Disable) Other ESC ESC 3. Operation 3.1 LCD Panel Interface & Setting 3.1.3 Setting

  38. 3. Operation 3.1 LCD Panel Interface & Setting 3.1.3 Setting Pump • Mode: - Auto >The lead lag cycle operation is activated - Manual >Only the lead pump is activated • Lead Pump :1# / 2# >The 1st or 2nd pump can be set as lead pump in the operation • Switch Cycle: xxxhr >The time for a pump to switch over to another pump • Pump Switch Check Time: >The time to check the water flow after pump is On • Reset Run Time: >To reset the record of the total pump run time • Min Run TM: xxxs >The minimum time required for a pump to operate

  39. Password Protected Pump Cool Stage: xx Heat Stage: xx Output Config Setting Interstage Time: xxs Temp ODA reset Enable (Disable) Other ESC ESC 3. Operation 3.1 LCD Panel Interface & Setting 3.1.3 Setting

  40. 3. Operation 3.1 LCD Panel Interface & Setting 3.1.3 Setting Output Config • Cool Stage: >To set the number of cool stage for the system operation • Heat Stage: >To set the number of heat stage for the system operation • Interstage Time: xxs >The delay time between every stages to start operation

  41. Password Protected Pump High TMP: xxx°C (°F) Too Hi TMP: xxx°C (°F) Low TMP: xxx°C (°F) Too Low TMP: xxx°C (°F) OD reset TMP: xxx°C (°F) Output Config Water Temp Alarm Setting Temp Temp Hysterysis Set Stage Temp ODA reset Enable (Disable) Other ESC ESC 3. Operation 3.1 LCD Panel Interface & Setting 3.1.3 Setting

  42. 3. Operation 3.1 LCD Panel Interface & Setting 3.1.3 Setting Temp (a) Water Temp Alarm • High TMP: xxx°C / °F >Water temperature in warning temperature (system still on) • Too Hi TMP: xxx°C / °F >Maximum allowable water temperature before system shut off • Low TMP: xxx°C / °F >Water temperature in warning temperature (system still on) • Too Low TMP: xxx°C / °F >Minimum allowable water temperature before system shut off • ODresetTMP: xxx°C / °F >The temperature range for heat addition On/Off stages that responding to the OD air temperature

  43. Password Protected Pump Output Config Water Temp Alarm Setting Cool Stage: xxx°C (°F) Heat Stage: xxx°C (°F) Temp Temp Hysterysis Set Stage Temp ODA reset Enable (Disable) Other ESC ESC 3. Operation 3.1 LCD Panel Interface & Setting 3.1.3 Setting

  44. 3. Operation 3.1 LCD Panel Interface & Setting 3.1.3 Setting Temp (b) Temp Hysterysis • Cool Stage: xxx°C / °F >The temperature difference between ON and OFF of a Cool Stage • Heat Stage: xxx°C / °F >The temperature difference between ON and OFF of a Heat Stage

  45. Password Protected Pump Output Config Water Temp Alarm Setting Temp Temp Hysterysis Heat Rej: xxx°C (°F) Heat Add: xxx°C (°F) Set Stage Temp ODA reset Enable (Disable) Other ESC ESC 3. Operation 3.1 LCD Panel Interface & Setting 3.1.3 Setting

  46. 3. Operation 3.1 LCD Panel Interface & Setting 3.1.3 Setting Temp (c) Set Stage Temp • Heat Rej: xxx°C / °F >The first cool stage temperature setting • Heat Add: xxx°C / °F >The first heat stage temperature setting

  47. ESC 3. Operation 3.1 LCD Panel Interface & Setting 3.1.3 Setting Password Protected Pump Output Config Setting Temp ODA reset Enable (Disable) Other

  48. 3. Operation 3.1 LCD Panel Interface & Setting 3.1.3 Setting ODA reset Enable / Disable • To enable / disable the OD Air Reset function

  49. Password Protected Pump New Password: xxxx Temp Unit: °C (°F) Key Back Light: Enable (Disable) LCD Back Light: Enable (Disable) Buzzer: Enable (Disable) Set Date: DD-MM-YY Set Time: hh:mm:ss Output Config Temp Setting ODA reset Enable (Disable) Other ESC ESC 3. Operation 3.1 LCD Panel Interface & Setting 3.1.3 Setting

  50. 3. Operation 3.1 LCD Panel Interface & Setting 3.1.3 Setting Other • New Password: xxxx >To set new password. Default password = 8888 • Temp Unit: °C / °F >To set the temperature unit • Key Back Light: Enable / Disable >To enable / disable the LCD panel key back light • LCD Back Light: Enable / Disable >To enable / disable LCD panel screen back light • Buzzer: Enable / Disable >To enable / disable the buzzer on LCD panel • Set Date: DD-MM-YY >To set the date for the LWC system • Set Time: hh:mm:ss >To set the time for the LWC system

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