EarthLinked SCW Series Quick Start Instructions
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EarthLinked SCW Series Quick Start Instructions

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SCW Series Compressor Unit
SCW-410-QS (05/12)
EarthLinked
R-410A
Quik-Start Instructions
CONTENTS
®
PAGE
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Copyright 2012 Earthlinked Technologies, Inc.

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Summary of Contents for EarthLinked SCW Series

  • Page 1: Table Of Contents

    ® EarthLinked SCW Series Compressor Unit R-410A Quik-Start Instructions CONTENTS PAGE Pre-Installation Placement & Mechanical Information System Application Options Antifreeze Protection Electrical and Sound Data • 230-1-60 Internal Wiring • 230-3-60 Internal Wiring • Field Wiring Diagram System Start-Up • Evacuation/Charging •...
  • Page 2 Installation and service must be made in accordance with the instructions set forth in this manual and the current EarthLinked Heating and Cooling Systems Installation, Operation and Maintenance Manual. Failure to provide installation and service by an authorized, trained installer in a manner consistent with the subject manuals will void and nullify the limited warranty coverage for the system.

  • Page 3: Pre-Installation

    2. All series Earth Loops: V1, D1, T1, V1.5, D1.5, V2, D2, D3, H1, H5 3. ACMs are for SC, SD and SCW compressor units only. ® Note: Desuperheater and all EarthLinked thermostats can be utilized throughout capacity range. Figure 1. Model Numbers Guidelines for the general layout of the system components are shown in Figures 2a and 2b.
  • Page 4 Figure 2a. General System Layout Figure 2b. Typical SCW Compressor Unit Primary Circuit Plumbing SCW-410-QS (05/12) Page 4...

  • Page 5: Placement & Mechanical Information

    Placement and Mechanical Information ® EarthLinked compressor units may be located outside or inside the building, following these guidelines. OUTSIDE Locate compressor unit: • On a standard HVAC condensing unit pad, resting on firm, level, settled ground. • Same as for INSIDE placement. See below.
  • Page 6 • Where the total length of refrigerant line sets (from manifolds to compressor unit and from compressor unit to air handler) do not exceed 125 feet, as shown in Figure 2a. • Where the compressor unit is no more than 20 feet higher than the earth loop manifolds. Compressor unit may be located lower than the earth loop manifolds.
  • Page 7 Compressor units are shipped from the factory with a low pressure nitrogen holding charge. Carefully relieve the holding charge when the compressor unit is being prepared to connect refrigerant system piping. The compressor unit package contains a service valve kit and an adapter kit. The two service valves are to be installed on the earth loop vapor and liquid connections of the compressor unit, using the adapters to right-size to the proper earth loop line set.
  • Page 8 SCW-410-QS (05/12) Page 8...
  • Page 9 Figure 5. SCW Connections for R-410A SCW-410-QS (05/12) Page 9...
  • Page 10 Figure 6. SCW Internal Flow Schematic SCW-410-QS (05/12) Page 10...
  • Page 11 Figure 7. SCW Piping SCW-410-QS (05/12) Page 11...

  • Page 12: System Application Options

    System Application Options Figure 8. SCW Radiant Panel Hydronic Heating and Air (Chilled Water) Cooling SCW-410-QS (05/12) Page 12...

  • Page 13: Antifreeze Protection

    The antifreeze protection is provided by the ® installer prior to the EarthLinked system start-up. Propylene-glycol antifreeze solution with an inhibitor is the type of antifreeze solution required for ®...

  • Page 14: Electrical And Sound Data

    General guidelines for introducing propylene glycol into the water circulating system follow. The manufacturer’s specific instructions and industry standards always take precedence when introducing propylene-glycol to the system. • Calculate the quantity of inhibited propylene-glycol (fluid) required to achieve the desired results.

  • Page 15: 230-1-60 Internal Wiring

    Figure 10. SCW Electrical Ladder Diagram (230-1-60) SCW-410-QS (05/12) Page 15...
  • Page 16 Figure 11. SCW Electrical Schematic (230-1-60) SCW-410-QS (05/12) Page 16...

  • Page 17: 230-3-60 Internal Wiring

    Figure 12. SCW Series 230-3-60 Electrical Ladder Diagram SCW-410-QS (05/12) Page 17...
  • Page 18 Figure 13. SCW Series 230-3-60 Electrical Schematic SCW-410-QS (05/12) Page 18...

  • Page 19: Field Wiring Diagram

    Figure 14. (Part 1 of 2) SCW Field Wiring Diagram (Reference Figure 8) SCW-410-QS (05/12) Page 19...
  • Page 20 Figure 14. (Part 2 of 2) SCW Field Wiring Diagram (Reference Figure 9) SCW-410-QS (05/12) Page 20...

  • Page 21: System Start-Up

    System Start-up Evacuation/Charging 1. SCW Models Refer to Figure 15 and the following description: Evacuation and Initial Charge 1. Carefully vent the nitrogen charge from the compressor unit. 2. After installing and nitrogen brazing the HVAC system components and compressor unit service valves, turn the Service Valves “OFF” and pressurize the HVAC components to 150 psig with dry nitrogen and a trace of refrigerant.
  • Page 22 6. Initiate the system evacuation. Evacuate the system down to 230 MICRONS as read on the digital micron gage. After 230 microns has been achieved, turn off the LP and HP valves and turn “OFF” the vacuum pump. Reading the digital micron gage, the system pressure must not exceed 280 MICRONS WITHIN 5 MINUTES.

  • Page 23: Final Charge (Heat/Cool And Cool Only)

    7. Close the LP and HP valves on the gage block. Disconnect the vacuum pump and the utility hose from the gage block. Isolate/protect the Digital Micron Gage from the liquid Earth Loop Service Valve until the initial refrigerant charge is complete.
  • Page 24 Figure 17. Primary Circuit with Compressor Unit Heat Exchanger Final charging is done in the COOL mode as follows, with the charging set up described in Figure 18: 1. Continue measuring the refrigerant charge weight as shown in Figure 18. 2.
  • Page 25 Figure 18. Typical Final Charge Set-up for SC, SD and SCW Compressor Units (SC Model shown). 9. Next, the TXV is to be adjusted to provide 10°F to 20°F (or less) superheat while running in cooling mode. The first step is to utilize the access port and LP gage in Figure 19 to measure suction pressure.
  • Page 26 Figure 19. Superheat Measurements for SC, SD and SCW Compressor Units (SC Model shown). 10. Using an accurate temperature indicator, read the suction temperature at the compressor suction port. Read the suction pressure at the access port on the LP gage.
  • Page 27 SATURATION SUCTION SATURATION SUCTION TEMPERATURE PRESSURE TEMPERATURE PRESSURE (°F) (psig) (°F) (psig) 26.1 199.2 30.8 216.1 35.9 234.0 41.5 253.0 47.5 273.0 54.1 294.1 61.2 316.4 68.8 339.9 77.1 364.6 86.0 390.5 95.5 417.7 105.7 446.3 116.6 476.3 128.3 507.6 140.8 540.5 154.1...
  • Page 28 Figure 21. Charging and Superheat Adjustment Process SCW-410-QS (05/12) Page 28...

  • Page 29: Final Charge (Heat Only)

    Final Charge (Heat Only) It is critical to control the conditions under which the compressor unit operates while final charging the system. Hydronic Systems Hydronic heating is provided by the SCW compressor unit shown in Figure 16. The circulating water in the primary circuit seen in Figure 17 is to be maintained in the 45°F to 65°F range.
  • Page 30 Registration Card and inside the compressor unit on the electrical diagram for future reference. This is the full system charge. The system is now fully operational and needs no further adjustment. Figure 22. Correct Final Charge Level ® Figure 23. EarthLinked Performance Parameters SCW-410-QS (05/12) Page 30...

This manual is also suitable for:

Scw r-410a

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