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GAS-FIRED DOUBLE-EFFECT 

ABSORPTION CHILLER-HEATER

 
 

This product is a gas-fired absorption unit which provides chilled water for cooling or 

hot water for heating in central plant type air conditioning systems.   Units with nominal 
refrigeration capacities of 30, 40, 50, 60, 80, and 100 tons are complete with operating 
and safety controls.   

When  this  equipment  is  correctly  applied,  installed  in  accordance  with  Yazaki 

INSTALLATION  INSTRUCTIONS, and  properly  maintained,  it  can  provide many  years 
of trouble-free operation. 

 
 
 

CONTENTS 

 
GENERAL

 

Page 

  ABSORPTION PRINCIPLE 

  COOLING OPERATION 

  HEATING OPERATION 

 
CONTROLS 

  GENERAL INFORMATION 

  CONTROL ADJUSTMENTS 

 

OPERATION 

  COOLING 

  HEATING 

  SAFETY CONTROLS 

  REMOTE CONTROL 

  PRECAUTIONS 

 

 

 

 

MAINTENANCE

    

 

 

 

 

 Page

 

  GENERAL INFORMATION 

  ROUTINE MAINTENANCE 

  MAINTENANCE INTERVALS 

  EVACUATION OVERVIEW 

  CHEMICAL MAINTENANCE 

  WINTER SHUTDOWN 

10 

  TROUBLESHOOTING 

10 

  WATER QUALITY 

11 

  ERROR CODES 

11 

  STARTUP & MAINTENANCE 

DATA SHEET 

13 

 
WARRANTY 

  YAZAKI LIMITED EXPRESS 

WARRANTY 

14 

 

 

OPERATING INSTRUCTIONS 

CH-K30, 40, 50, 60, 80, 100 

Summary of Contents for CH-K100

Page 1: ...UCTIONS and properly maintained it can provide many years of trouble free operation CONTENTS GENERAL Page ABSORPTION PRINCIPLE 2 COOLING OPERATION 2 HEATING OPERATION 3 CONTROLS GENERAL INFORMATION 4...

Page 2: ...cooled and heat is normally rejected to a cooling tower though ground loop is also an option COOLING OPERATION High Temperature Generator HGE The gas burner heats a dilute lithium bromide solution in...

Page 3: ...nd semi concentrated solution flow into the primary separator in exactly the same manner as in the cooling cycle Low Temperature Generator LGE In Heat mode the changeover valve opens a path for the se...

Page 4: ...y also be supervised and controlled by external control systems to a limited degree when the necessary interconnections are installed Additional controls and interlocks can be explained by your ASP On...

Page 5: ...2 10 Rated 300vac F4 2 Fuji Model FGAO 2 Rated 250vac F11 F12 2 Fuji Model FGAO 2 Rated 250vac F31 F32 1 Fuji Model FGAO 2 Rated 250vac FB11 FB12 2 Fuji Model FGAO 2 Rated 250vac FB21 FB22 15 Nagasaw...

Page 6: ...on the I O Board to ON The leaving chilled water temperature can be adjusted using the TC potentiometer on the CPU Board The leaving chilled water set point can be set in a range of 40 1 F 4 5 C to 59...

Page 7: ...ress the alarm RESET button to restart the cooling or heating operation If Error Code 52 is amongst the codes being displayed it will also be necessary to press the RESET button on the burner controll...

Page 8: ...Gas Pressure Check Supply and Manifold Inhibitor Check If required For the K Series an inhibitor charge is needed every 3 years on average Palladium Cell Heater Check Flow Rate Check Solution Pump Rot...

Page 9: ...s 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 vacuum gauge MUST be used in order to determine the...

Page 10: ...iller heater itself as well If doing so pressurize the unit to the same pressure as the circuits using nitrogen See the Service Manual for further details TROUBLESHOOTING SYMPTOM Chiller heater does n...

Page 11: ...iption Notes Reset Type FS Flow switch alarm Chilled hot water flow switch FS1 open but for less than 10 minutes After 10 minutes this changes automatically to error code 27 Auto 01 DCP power error Op...

Page 12: ...10 C or above 212 F 100 C Ignored for first 10 minutes of P2 operation Manual 36 CND sensor error CND sensor reads below 14 F 10 C or above 212 F 100 C Auto 40 Loss of cooling capacity LT temperature...

Page 13: ...13 Please send a copy of any maintenance data sheets to Yazaki Energy Systems Inc at the address FAX number and or email address listed on the last page of this document...

Page 14: ...Labor Charges for warranty service can be obtained by an authorized service provider upon written request to YESI 7 LIMITATION OF WARRANTY AND LIMITATION OF REMEDY CUSTOMER s remedies shall be limite...

Page 15: ......

Page 16: ...MS INC 701 E PLANO PKWY SUITE 305 PLANO TEXAS 75074 6700 Phone 469 229 5443 Fax 469 229 5448 Email yazaki yazakienergy com Web http www yazakienergy com This symbol on the product s name plate means i...

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