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KRA Refrigeration System Installation, Operation & Maintenance Manual

L-3571 ENGLISH

23

Figure 12: Wiring Diagram for KRA 433X Unit with 2 Boxes

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Содержание KRA 433X 1161

Страница 1: ...ery precaution has been taken in the preparation of this manual to ensure its accuracy However Dometic assumes no responsibility for errors and omission Neither is any liability assumed for damages re...

Страница 2: ...Condensing Unit 10 THERMOSTAT OPERATION 10 Operating the Dometic Control 10 Parameter Programming 11 Modbus Addresses for Dometic STIIC Interface 12 SERVICING YOUR REFRIGERATION SYSTEM 12 REFRIGERANT...

Страница 3: ...s NEC in the U S CEC in Canada 3 Open the electrical disconnect switch es before electrically connecting the unit 4 Before operating the unit be certain it is properly grounded 5 The units contain ref...

Страница 4: ...refrigerant expansion valve externally equalized expansion valve thermostat and seawater system for water cooled titanium condensers WARNING To avoid possible explosion death or injury practice safe h...

Страница 5: ...s not constant 4 10 cm of R7 insulation is required It is best to use as much insulation as is practical Call the Dometic Applications Department for advice on larger sized boxes or if you are unsure...

Страница 6: ...eded for the installation UNPACKING AND INSPECTION Units are securely packed in shipping containers approved by the International Safe Transit Association Upon arrival carefully check all items agains...

Страница 7: ...ce then add the minimum free area to get the minimum free area total for all of the units This also applies to the space airflow For example if a KRA 433X and a KRA 450X unit are in an enclosed space...

Страница 8: ...ould be in good thermal contact with the refrigerant tubing Attach it to the closest straight piece of tubing exiting the last box If either the expansion valve or its sensing bulb is located outside...

Страница 9: ...ons will extend the compressor s run time significantly resulting in shortened unit life To set the thermostat see Thermostat Operation on page 10 Thermostat bulb or thermistor should be mounted one t...

Страница 10: ...n off the first box turn on the other one Wait approximately 10 minutes Turn all boxes on and check for frost on box plate surfaces If not fully frosted check subcool 3 Follow procedures for Starting...

Страница 11: ...UP or DOWN buttons to change it then press the SET button to temporarily save it and display the the parameter code again 6 Repeat steps 4 and 5 to set other parameters if needed 7 TO PERMANENTLY SAV...

Страница 12: ...t temperature This will expedite the recovery of the refrigerant but is not necessary EVACUATE REFRIGERANT 1 Connect manifold gauges to both high and low side ports Attach center line of gauge set to...

Страница 13: ...NANCE SEAWATER SYSTEM Check the seawater strainer daily Remove any debris If you are in waters where jellyfish or other debris are a problem you may find it necessary to add a strainer on the outside...

Страница 14: ...y See technician for service 3 Low refrigerant charge Check for a refrigerant leak and repair Evacuate system and recharge with the correct amount of R 404A 4 TXV Mechanical failure Have technician co...

Страница 15: ...temperature introduce cooler air into compartment that houses the condensing unit High water temperature while you cannot remedy this problem you can help by introducing cooler air into the compartme...

Страница 16: ...S Figure 1 KRA Cabinet Type Condensing Units Figure 2 Various Flat Plate Evaporators Figure 3 Wrapped Box Evaporator Figure 4 Flat Plate Evaporator Designs Figure 5 Digital Thermostat Dometic Control...

Страница 17: ...TION PROPRIETARY NOTE THE INFORMATION CONTAINED WITHIN THIS DOCUMENT IS THE PROPERTY OF DOMETIC CORPORATION ANY ATTEMPT TO COPY OR DISTRIBUTE WITHOUT WRITTEN CONSENT FROM DOMETIC CORPORATION SHALL BE...

Страница 18: ...ory Insulated REV DATE APR DWG REVISION DESCRIPTION PROPRIETARY NOTE THE INFORMATION CONTAINED WITHIN THIS DOCUMENT IS THE PROPERTY OF DOMETIC CORPORATION ANY ATTEMPT TO COPY OR DISTRIBUTE WITHOUT WRI...

Страница 19: ...N DOMETIC APR BY DWG BY SCALE DATE REV DWG PART NUMBER PROPRIETARY NOTE THE INFORMATION CONTAINED WITHIN THIS DOCUMENT IS THE PROPERTY OF DOMETIC CORPORATION ANY ATTEMPT TO COPY OR DISTRIBUTE WITHOUT...

Страница 20: ...REV DWG PART NUMBER PROPRIETARY NOTE THE INFORMATION CONTAINED WITHIN THIS DOCUMENT IS THE PROPERTY OF DOMETIC CORPORATION ANY ATTEMPT TO COPY OR DISTRIBUTE WITHOUT WRITTEN CONSENT FROM DOMETIC CORPO...

Страница 21: ...KRA Refrigeration System Installation Operation Maintenance Manual L 3571 ENGLISH 21 Figure 10 Refrigerant Pressure Temperature Chart...

Страница 22: ...22 L 3571 ENGLISH Figure 11 Wiring Diagram for KRA 433X Unit with 1 Box...

Страница 23: ...KRA Refrigeration System Installation Operation Maintenance Manual L 3571 ENGLISH 23 Figure 12 Wiring Diagram for KRA 433X Unit with 2 Boxes...

Страница 24: ...RPORATION SHALL BE CONSIDERED UNLAWFUL AND CAN BE CONTESTED IN A COURT OF LAW PART NUMBER DWG REV DATE SCALE DWG BY APR BY DOMETIC REVISION DESCRIPTION DWG APR DATE REV 339501 C 339501 KRA 450X KRA 1...

Страница 25: ...KRA Refrigeration System Installation Operation Maintenance Manual L 3571 ENGLISH 25 Figure 14 Wiring Diagram for KRA 450X Unit with 3 Boxes...

Страница 26: ...26 L 3571 ENGLISH NOTES...

Страница 27: ...KRA Refrigeration System Installation Operation Maintenance Manual L 3571 ENGLISH 27 NOTES...

Страница 28: ...rineSales dometic com 24 7 TECH SUPPORT FOR UNITED STATES AND CANADA 8 00 AM to 5 00 PM Eastern Time 1 800 542 2477 After hours and weekends 1 888 440 4494 INTERNATIONAL SALES AND SERVICE Europe and t...

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