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Summary of Contents for G&D GD-20H
- Page 1 CHILLER INSTALLATION GUIDE & USER MANUAL - GD-20H & GD-27H CHILLERS - INFO@GDCHILLERS.COM 1.800.555.0973 GDCHILLERS.COM/INSTALLATION-VIDEOS...
- Page 2 GD-20H & GD-27H CHILLER MANUAL ©2021 G&D CHILLERS, INC. ALL RIGHTS RESERVED...
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Page 3: Table Of Contents
INSTALLATION GUIDE • USER MANUAL GD-20H & GD-27H MODELS CONTENTS CONTACT INFORMATION & AFTERHOURS SUPPORT ............4 INSTALLATION VIDEO LINKS ....................4 PACKAGE CHILLER DESCRIPTION ..................5 INSTALLATION REQUIREMENTS ..................6 PIPING RECOMMENDATIONS ..................... 7 CONTROLLER AND NAVIGATION ..................9 C.PCO CAREL MINI ALARMS ..................... -
Page 4: Contact Information & Afterhours Support
CONTACT INFORMATION & AFTERHOURS SUPPORT CONTACT INFORMATION G&D Chillers, Inc. 760 Bailey Hill Rd. Eugene, Oregon 97402 1.800.555.0973 info@gdchillers.com Office Hours: 8 AM – 5 PM PST AFTERHOURS TECHNICAL SUPPORT G&D Chillers offers 24/7 technical support. For emergency assistance after normal business hours, call the main office at 1.800.555.0973. -
Page 5: Package Chiller Description
GD-20H & GD-27H MODELS INSTALLATION GUIDE • USER MANUAL PACKAGE CHILLER DESCRIPTION CONDENSER REFRIGERANT PIPING – Standard configuration. Copper tube Type L ACR copper. Liquid line-filter drier, sight AIR COOLED glass/moisture indicator, solenoid valve aluminum fin condenser coil or micro-channel condenser coil. -
Page 6: Installation Requirements
CLEARANCE REQUIREMENTS a concrete pad indoors or outdoors. A properly sized pump and liquid cooling 30" GD-20H, GD-27H system for the chiller condenser must be supplied by the end user. Contact G&D Chillers for additional information and assistance with sizing. -
Page 7: Piping Recommendations
GD-20H & GD-27H MODELS INSTALLATION GUIDE USER MANUAL PIPING RECOMMENDATIONS drawing on the next page shows Supplemental details and additional recommendations are listed here: Insulate supply and return piping Use closed-cell foam insulation Install protective cladding typical for cold glycol/water systems... -
Page 9: Controller And Navigation
CONTROLLER AND NAVIGATION : ALARM :SET :ENTER :PROGRAM :INFO :DOWN :ESCAPE :POWER Set Screens: 1. Glycol set point: Ensure you see SET in the display screen. a. You can change options from SET, INFO and POWER by using the UP and DOWN buttons. -
Page 10: C.pco Carel Mini Alarms
Carel Alarms CODE DESCRIPTION RESET ACTION DELAY AL004 Unit – User inlet water temperature probe Switch the unit off AL005 Unit – User outlet water temperature probe Switch the unit off AL008 Unit – User pump 1 overload None AL009 Unit – User pump 2 overload None AL018 Unit –... - Page 11 GD-20H & GD-27H MODELS INSTALLATION GUIDE • USER MANUAL AL176 Circuit 1 – Overload compressor 2 Stop compr.2 Circ.1 AL178 Circuit 1 – Pump-Down end for maximum time Stop circuit 1 Parameter B035 AL200 Circuit 2 – Alarm discharge probe pressure Stop circuit 2 AL201 Circuit 2 –...
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Page 12: Start-Up Instructions
9 Easy Steps to Start‐up Your New G&D Chiller Please view install videos online at www.gdchillers.com/installation‐videos Chiller Models 20H, 27H, 20H‐MS, & 27H‐MS Chiller must be positioned with at least 30 inches of clearance on air intake side (opposite louvered access panels) and open to free air on exhaust side (louvered panel side) with no obstructions. Adequate clearance for airflow must be provided for the chiller to operate reliably. Refer to the figure CHILLER CLEARANCE REQUIREMENTS for more details. -
Page 13: Warranty Start-Up Checklist
WARRANTY START-UP CHECKLIST INSTALLATION GUIDE • USER MANUAL SINGLE & DUAL STAGE MODELS Jobsite: Tech Company: Chiller Model: Technician: Chiller Serial #: Start-Up Date: FOLLOWING START-UP OF CHILLER, PLEASE SEND A COPY OF COMPELTED FORM TO G&D TECH SUPPORT CLEARANCE AROUND CHILLER FRONT: BACK:... -
Page 14: Sequence Of Operation
SEQUENCE OF OPERATION 1. Chiller supply and return ball valves should 7. The controller will energize the compressor always be open during normal operation. starter while monitoring system pressures and flow. 2. Fluid bypass valve is factory set at 20 PSI valve design to allow minimum flow across heat 8. -
Page 15: Troubleshooting
GD-20H & GD-27H MODELS INSTALLATION GUIDE • USER MANUAL TROUBLESHOOTING COMPLAINT SYMPTOMS CAUSE SOLUTION Lower than expected suction Low refrigerant charge Check for leaks, repair, and System short of and discharge pressures recharge. See item 5 capacity Higher than expected Dirty condenser Clean. - Page 16 TROUBLESHOOTING COMPLAINT SYMPTOMS CAUSE SOLUTION Minimal difference in pressure Broken suction valves Change compressor Compressor does between high side and low side Broken discharge line Change compressor not pump of system, when compressor motor has power Internal pressure safety Check item 13 and change valve stuck open compressor if necessary...
- Page 17 GD-20H & GD-27H MODELS INSTALLATION GUIDE • USER MANUAL TROUBLESHOOTING COMPLAINT SYMPTOMS CAUSE SOLUTION Check for leaks, repair, and Compressor starts Internal overload tripping Loss of charge causing recharge but cycles on insufficient motor cooling overload MUST WAIT 2-3 HOURS TO...
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Page 18: Propylene Glycol Chart
3 4 53 67 8 98 ÿ 7 6 57 ÿ 4 ÿ 3 ÿ ÿ 3 ÿ ÿ ! ÿ " ÿ $ % ÿ & ' ÿ ÿ... -
Page 19: Warranty Statement
GD-20H & GD-27H MODELS INSTALLATION GUIDE • USER MANUAL **TO ACTIVATE WARRANTY, FILL OUT STARTUP CHECKLIST AND RETURN WITHIN 30 DAYS** WARRANTY STATEMENT TWO-YEAR LIMITED WARRANTY ON PARTS, ONE-YEAR LIMITED WARRANTY ON LABOR G&D CHILLERS, INC. provides a limited warranty to the original purchaser of new products against defects in materials and workmanship for a period of one (1) year of normal commercial usage. - Page 20 TO THE EXTENT THAT ANY OF THE SAME CANNOT BE EXCLUDED, SUCH IMPLIED CONDITION, REPRESENTATION AND/OR WARRANTY IS LIMITED IN DURATION TO THE EXPRESS WARRANTY PERIOD REFERRED TO IN THE "LIMITED WARRANTY" SECTION ABOVE. BECAUSE SOME STATES OR JURISDICTIONS DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, THE ABOVE LIMITATION MAY NOT APPLY IN SUCH STATES.
- Page 21 INSTALLATION GUIDE • USER MANUAL SINGLE & DUAL STAGE MODELS G&D Chillers welcomes any and all questions or concerns We can be reached at 800-555-0973 or 541-345-3903 G&D CHILLERS, INC. • GD-20-27H-MS_CRL-r2021A...
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