Table of Contents
Advertisement
Quick Links
DuraSea Condenser Unit
Installation, Start-Up & Service Manual
DuraSea Condenser Unit
Dometic Corporation
Rev. 20170601
PN 337982
L-3153
COPYRIGHT © 2013-2017 Dometic Corporation. All Rights Reserved.
No part of this publication may be reproduced, translated, stored in a retrieval system, or transmitted in any form or by any means
electronic, mechanical, photocopying, recording or otherwise without prior written consent by Dometic Corporation. Every precaution
has been taken in the preparation of this manual to ensure its accuracy. However, Dometic Corporation assumes no responsibility for
errors and omission. Neither is any liability assumed for damages resulting from the use of this product and information contained
herein.
RETAIN THESE INSTRUCTIONS FOR
FUTURE REFERENCE
Advertisement
Table of Contents
Related Manuals for Dometic DuraSea DCA36D
Summary of Contents for Dometic DuraSea DCA36D
- Page 1 Dometic Corporation. Every precaution has been taken in the preparation of this manual to ensure its accuracy. However, Dometic Corporation assumes no responsibility for errors and omission. Neither is any liability assumed for damages resulting from the use of this product and information contained...
-
Page 2: Table Of Contents
Table of Contents INTRODUCTION ....... 1 SYSTEM START-UP ......15 . -
Page 3: Introduction
Read This Manual Before Proceeding INTRODUCTION The Dometic DuraSea Split System is a direct-expansion air-cooled air conditioning system designed for use in marine and other harsh environments. Its two primary components consist of a condensing unit and an evaporator unit. A complete system also requires installation of control(s), ducting, and a refrigerant line-set. -
Page 4: Unpacking And Inspection
DuraSea Condenser Installation, Start-Up & Service Manual R-410A Quick Reference Guide UNPACKING AND INSPECTION Units are securely packed in shipping crates. Upon arrival, carefully check all items against the packing list to ensure all cartons were received and correct equipment was received. Always keep the unit in the "up" orientation as indicated by the arrows on each carton. -
Page 5: Installation Guidelines
DuraSea Condenser Installation, Start-Up & Service Manual Important Safety Considerations Figure 1: Model Number Nomenclature 9 10 11 12 13 14 15 DuraSea Condensing Unit Options A = None Refrigerant Type B = Nema 4x electric Box & heatshrunk electric connections A = R410A C = Low ambient Fan Cycling Control B = R417A... -
Page 6: Other Hazards
Dometic equipment to prevent any loss of refrigerant. Dometic does not recommend the practice of using refrigerant to purge air and moisture from the system at installation. This formerly used practice of purging is in violation of United States federal law. -
Page 7: Installation Clearances
DuraSea Condenser Installation, Start-Up & Service Manual Installation Clearances Plan all connections which must be made prior to starting installation, including ducting, grilles, copper line set, condensate drain, electrical power connections, and location of control panel. See Figure 2 for general layout example. Select a location for the condensing unit and its support system (pad, rails or other) that provides for the minimum clearances required for safety. - Page 8 DuraSea Condenser Installation, Start-Up & Service Manual Installation Clearances AVOID: • Locations that permit water from higher level runoff and overhangs to fall onto the unit. • Direct tubing contact with water pipes, ductwork, floor joists, floors, and walls. • Suspending refrigerant tubing from structure with rigid wire or straps that would come in contact with tubing.
-
Page 9: Rigging And Mounting The Rigging
Select the recommended line sizes for DuraSea unit from Table 1 on page 8. These sizes are suitable for line lengths of 50 feet (15.24 m) or less. If a run of more than 50 feet (15.24 m) is required, contact Dometic applications team for assistance. - Page 10 DuraSea Condenser Installation, Start-Up & Service Manual Refrigerant Piping Connections Table 1: DuraSea Unit Refrigerant Line Specifications METRIC CONVERSION CHARTS Condenser Fan Flow 6000 10000 Refrigeration System Fractional inches 1-1/8 Feet Meters 10.7 13.7 Unit Weight Pounds (lbs) Kilograms 131.5 140.6 165.6 170.1...
-
Page 11: Liquid Lift
DuraSea Condenser Installation, Start-Up & Service Manual Refrigerant Piping Connections IQUID A liquid lift condition exists when the outdoor unit is located below the indoor (evaporator) unit and liquid flows vertically up in a portion of the liquid line. The vertical column of liquid reduces the available state point subcooling at the evaporator coil's thermal expansion valve. -
Page 12: Install Filter Drier
DuraSea Condenser Installation, Start-Up & Service Manual Service Valve Operation NSTALL ILTER RIER Every unit MUST have a filter drier in the liquid line. Locate the filter drier(s) at the indoor unit, close to the evaporator coil's thermal expansion valve (TXV) inlets. A R-410A rated filter drier is shipped in cartons near the base valves. -
Page 13: Existing Evaporator Coil
DuraSea Condenser Installation, Start-Up & Service Manual Pressure Test and Leak Checking XISTING EVAPORATOR COIL If the existing evaporator coil is to be re-used, check with the coil manufacturer to verify the coil construction is suitable for operation with the higher pressures of R-410A. Also determine if the existing TXV valve is compatible with R-410A, replace if necessary. - Page 14 DuraSea Condenser Installation, Start-Up & Service Manual Pressure Test and Leak Checking WARNING To avoid possible explosion, the line from the nitrogen cylinder must include a pressure regulator and a pressure relief valve. CAUTION Never exceed 800 psi (5516 kPa) due to the possibility of rupturing hoses or line-set connections. Open the hand valve a minimal amount on the line coming from the nitrogen cylinder.
-
Page 15: Evacuation
2% and the current within 10%. Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components. Such operation would invalidate any applicable Dometic warranty. IELD... -
Page 16: Thermostat
24VAC C ONTROLS Most commercial evaporator units include a transformer to provide 24VAC to provide power for thermostat. Dometic Marine evaporators do not include a 24VAC output. In this instance the optional DuraSea 24VAC control box can be used to provide 24VAC power source to operate the DuraSea condenser fan, compressor, and indoor fan motor contactor (or control relay). -
Page 17: System Start-Up
DuraSea Condenser Installation, Start-Up & Service Manual Refrigerant Charging Guidelines SYSTEM START-UP Use the “START-UP CHECKLIST” on page 23 to make notes as you go through the start-up procedures. WARNING Failure to follow this warning could result in personal injury, death, and/or equipment damage. R-410A refrigerant systems operate at highter pressure than standard R-22 systems. -
Page 18: System Check
Ensure the liquid line and suction line service valves are set to the top seated position. All barriers and covers must be in place. NOTE: The units are factory charged with the required amount of oil. If oil recharging is required, call Dometic for proper amount. -
Page 19: Compressor Overload
DuraSea Condenser Installation, Start-Up & Service Manual Start Unit To verify the compressor is rotating in the proper direction: Connect service gauges to the suction and liquid pressure fittings. Energize the compressor. The suction pressure should drop and the liquid pressure should rise, as is normal on any start-up. OMPRESSOR VERLOAD This overload interrupts power to the compressor when either the current or internal motor winding temperature becomes... -
Page 20: System Operation
DuraSea Condenser Installation, Start-Up & Service Manual Start Unit Figure 7: Blocking Outdoor Coil Outdoor Temp Less Than 65°F (18°C) When outdoor ambient temperature is below 65°F (18°C) it may be necessary to restrict the condenser air flow to achieve normal operating pressures in the 325 to 375 psig (2240 to 2585 kPa) range. These pressures are necessary for checking the charge. -
Page 21: Maintenance
DuraSea Condenser Installation, Start-Up & Service Manual Quarterly Inspection (and 30 days after initial start) MAINTENANCE These items should be part of a routine maintenance program, to be checked every month or two, until a specific schedule for each can be identified for this installation: UARTERLY NSPECTION DAYS AFTER INITIAL START... -
Page 22: Service
DuraSea Condenser Installation, Start-Up & Service Manual Refrigeration System SERVICE CAUTION Equipment Damage Hazard: Failure to follow this caution may result in damage to equipment. The compressor in a R-410A system uses a POE oil and PVE. These oils are extremely hygroscopic, meaning they absorb water readily. -
Page 23: General Troubleshooting
DuraSea Condenser Installation, Start-Up & Service Manual Troubleshooting GENERAL TROUBLESHOOTING ROUBLESHOOTING If you have a digital control, refer also to the troubleshooting section of the manual packaged with it. Table 3: General Troubleshooting PROBLEM POSSIBLE REASON/SOLUTION Compressor does not run. Contactor Open: 1. - Page 24 DuraSea Condenser Installation, Start-Up & Service Manual Troubleshooting Table 3: General Troubleshooting (continued) PROBLEM POSSIBLE REASON/SOLUTION Compressor cycles on low- Indoor-Air Fan Running pressure switch. 1. Liquid line solenoid valve(s) fails to open. Check liquid line solenoid valve(s) for proper operation. Replace if necessary. 2.
-
Page 25: Start-Up Checklist
DuraSea Condenser Installation, Start-Up & Service Manual Preliminary Information START-UP CHECKLIST RELIMINARY NFORMATION OUTDOOR: MODEL NO. ___________________________ SERIAL NO. ________________________ INDOOR: AIRHANDLER MANUFACTURER _____________________________________ MODEL NO. ___________________________ SERIAL NO. ________________________ TART OUTDOOR UNIT IS THERE ANY SHIPPING DAMAGE? (Y/N) __________ IF SO, WHERE: __________________________________________________________________________ WILL THIS DAMAGE PREVENT UNIT START-UP? (Y/N) ___________ CHECK POWER SUPPLY. - Page 26 DuraSea Condenser Installation, Start-Up & Service Manual Pre-Start-Up SUCTION LINE TEMP ______________________ SUBCOOLING TEMP ______________________ LIQUID PRESSURE _______________________ LIQUID LINE TEMP _______________________ SUPERHEAT TEMP ______________________ ENTERING OUTDOOR UNIT AIR TEMP ______________________ LEAVING OUTDOOR UNIT AIR TEMP _______________________ INDOOR UNIT ENTERING-AIR DB (dry bulb) TEMP __________________ INDOOR UNIT ENTERING-AIR WB (wet bulb) TEMP _________________ INDOOR UNIT LEAVING-AIR DB TEMP _____________________ INDOOR UNIT LEAVING-AIR WB TEMP _____________________...
- Page 27 NOTES...
- Page 28 DOMETIC MARINE DIVISION 2000 N. Andrews Ave. Pompano Beach, FL 33069 USA +1 954-973-2477 +1 954-979-4414 Email MarineSales@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...