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GAS-FIRED DOUBLE-EFFECT 

ABSORPTION CHILLER-HEATER 

 
 
 
 

 
 
 
 

FOR YOUR SAFETY 

 
If you smell gas: 

1. Open windows (only if installed 

indoors) 

2. 

Don’t touch electrical switches 

3. Extinguish any open flame 
4. DO NOT SMOKE! 
5. Immediately call your gas supplier 

FOR YOUR SAFETY 

 

Do not store or use gasoline or 
other flammable vapors and 
liquids in the vicinity of this or any 
other equipment. 

 

 
 

CONTENTS 

 
GENERAL

 

Page 

  ABSORPTION PRINCIPLE 

  COOLING OPERATION 

  HEATING OPERATION 

 
CONTROLS 

  GENERAL INFORMATION 

  CONTROL ADJUSTMENTS 

  CONTROL SEQUENCE 

12 

 

OPERATION 

  COOLING 

13 

  PRECAUTIONS 

13 

  HEATING 

13 

  REMOTE CONTROL 

13 

 
 

 

Page 

  SAFETY CONTROLS 

13 

  WINTER SHUTDOWN 

14 

 
MAINTENANCE 

  GENERAL INFORMATION 

14 

  MAINTENCE SCHEDULE 

14 

  ROUTINE MAINTENANCE 

15 

  EVACUATION OVERVIEW 

15 

  CHEMICAL MAINTENANCE 

17 

  WINTERIZING 

17 

  TROUBLESHOOTING 

17 

  WATER QUALITY 

18 

  ERROR CODES 

19 

 

 

OPERATING INSTRUCTIONS 

CH-MG150 

CH-MG200 

Содержание AROACE CH-MG150

Страница 1: ...ty of this or any other equipment CONTENTS GENERAL Page ABSORPTION PRINCIPLE 2 COOLING OPERATION 3 HEATING OPERATION 4 CONTROLS GENERAL INFORMATION 5 CONTROL ADJUSTMENTS 8 CONTROL SEQUENCE 12 OPERATIO...

Страница 2: ...ING INSTRUCTIONS may affect the equipment performance and product Warranty If the equipment does not operate as expected check the Troubleshooting Guide in these instructions BEFORE calling your Yazak...

Страница 3: ...bundle The heat absorbed by the cooling water is rejected to a cooling tower or alternative system The liquid refrigerant that drips off the tubing bundle joins the liquid refrigerant that resulted f...

Страница 4: ...ed refrigerant vapor and leaving a more concentrated solution The refrigerant vapor flows through a changeover valve into the Evaporator section The concentrated solution flows through another changeo...

Страница 5: ...back to the same concentration level as when it started the cycle Absorber ABS Liquid refrigerant that condensed on the outer surface of the Evaporator tubing bundle drips into the Absorber sump Conce...

Страница 6: ...ed manner by Building Automation Systems BAS BMS when Remote Operation is engaged Additional controls and interlocks may be required in some instances These controls and their functions can be explain...

Страница 7: ...er has been set up at the factory and SHOULD NOT BE ADJUSTED Universal replacements are NOT recommended Only use OEM parts for the solution pump and controller Fig 5 Hitachi VFD Controller Control Pan...

Страница 8: ...control box for troubleshooting observe all safety warnings on the chiller heater and in these instructions Only qualified and trained personnel should have access to the live electrical parts inside...

Страница 9: ...tioned to the left whenever the unit is to be in normal operating condition Position this switch to the right when adjusting the burner Position this switch to the middle when the unit is to sit dorma...

Страница 10: ...ard CAT5 cable one was provided from the factory connect the ACT5 to the Main CPU Board located in the upper right of the control box There is a jack in the upper middle of the CPU Board See Figure 8...

Страница 11: ...board could result To engage Economy Mode close a circuit between TB1 75 and TB1 76 When that circuit is closed the Main CPU Board logic will automatically apply a modifier to the temperature set poi...

Страница 12: ...tant that the chiller heater have control over the pumps to allow for controlled shut down under normal and abnormal conditions Running the chilled water pump at all times is discouraged as the chille...

Страница 13: ...e Absorber and Condenser tubing bundles 4 When two or more absorption chiller heaters are installed in parallel set all units to the same operating mode HEATING 1 Select ON on the DIRECT OPERATION sec...

Страница 14: ...epare the unit for long term shutdown Without running in Heat mode some water will be trapped in upper portions of the chiller heater and could potentially damage the unit should it freeze in the wint...

Страница 15: ...lves are referred to as Service Valve A upper and Service Valve B lower Refer to Fig 4 for detail on where these valves are located at the front of the unit The evacuation service valves are back seat...

Страница 16: ...well on a vessel as large as the chiller heater vacuum section Just because the vacuum pump has stopped producing bubbles in the water bucket does NOT mean the vacuum level is adequate A digital vacu...

Страница 17: ...to help prevent potential tube damage during freezing conditions TROUBLESHOOTING SYMPTOM Chiller Heater does not operate Possible Cause REMEDY No High Voltage Check the LED for the Power indication o...

Страница 18: ...umn An O mark indicates the potential issue should this line item go out of acceptable range 2 When water temperature rises above 104 F 40 C the tendency for corrosion rises remarkably As such there m...

Страница 19: ...e GP sensor reads above 252 F 122 C in heating mode 27 Chilled water flow switch error Flow Switch FS1 is open when it should be closed 28 Cooling water flow switch error Optional cooling water Flow S...

Страница 20: ...EMS INC 701 E PLANO PKWY SUITE 305 PLANO TEXAS 75074 6700 Phone 469 229 5443 Fax 469 229 5448 Email yazaki yazakienergy com Web www yazakienergy com This symbol on the product s nameplate means it is...

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