Summary of Contents for EarthLinked SHC-410-CP
- Page 1 ® EarthLinked CHARGING PROCESS R-410A Heating and Cooling Systems SHC-410-CP (01/13) Copyright 2013 Earthlinked Technologies, Inc.
- Page 2 READ THE CURRENT EarthLinked Heating and Cooling Installation, Operation and Maintenance Manual FOR COMPLETE INSTALLATION DETAILS. Earthlinked Technologies shall not be liable for any defect, unsatisfactory performance, damage or loss, whether direct or consequential, relative to the design, manufacture, construction, application or installation of the field specified components.
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Page 3: System Start-Up
Service Valves to Full Open and pressurize the HVAC components to 150 psig with dry nitrogen and a trace of refrigerant. Valve off the nitrogen Tank from the HVAC system components and SHC-410-CP (01/13) Page 3... - Page 4 20 inches of Hg vacuum is read on the LP gage. Close the refrigerant valve, and initiate the evacuation process again and until the above conditions are met. SHC-410-CP (01/13) Page 4...
- Page 5 9. Charge with liquid refrigerant until 3 pounds of refrigerant per ton of system capacity, has entered the system. Liquid entering the system at the charging port goes directly to the system earth loops. It does not go to the compressor. Should the pressures equalize and SHC-410-CP (01/13) Page 5...
- Page 6 Includes Desuperheater Model DSH-1872 to supplement water heating. Hydronic (radiant floor) water heating provided with separately purchased Series HWM Hydronic Water Module. Has internal refrigerant/water heat exchanger. Requires field supplied water circulating pump. Figure 3. Systems with Hydronic Heat Exchangers SHC-410-CP (01/13) Page 6...
- Page 7 Figure 4. Primary Circuit with Hydronic Water Module (HWM) Figure 5. Primary Circuit with Compressor Unit Heat Exchanger SHC-410-CP (01/13) Page 7...
- Page 8 400CFM per Ton. If condensing temperature is above acceptable range, the air flow is low. If condensing temperature is below the acceptable range, air flow is too high. Adjust air flow as appropriate. SHC-410-CP (01/13) Page 8...
- Page 9 (SC Model shown). 8. Check the suction saturation temperature to verify that it is within ±3°F for the measured suction pressure. The suction temperature should be approximately 15 to 20°F lower than the local earth temperature. SHC-410-CP (01/13) Page 9...
- Page 10 Figure 7. Charge at Middle Sight Glass ® Figure 8. EarthLinked Performance Parameters SHC-410-CP (01/13) Page 10...
- Page 11 If the cooling mode start-up process is initiated after running the system in Heat Only mode, the system should remain OFF for 48 hours after running in the Heat mode to allow the earth temperature surrounding the earth loops to stabilize. SHC-410-CP (01/13) Page 11...
- Page 12 2 hours. After a 2 hour wait, and many bubbles still exist in the sight glass, the process is done. No further adjustment in cool mode is required, and the system is operational. Figure 11. Many Bubbles-Inline Sight Glass SHC-410-CP (01/13) Page 12...
- Page 13 Next, apply a thermocouple at the compressor suction port as shown in Figure 13 by attaching the thermocouple lead with electrical tape, and wrapping with ½” thick insulation. Figure 13. Superheat Measurements for SC, SD and SCW Compressor Units (SC Model shown). SHC-410-CP (01/13) Page 13...
- Page 14 Write it down on the Warranty Registration Card and inside the compressor unit on the electrical diagram, for future reference. This is the full system charge. SHC-410-CP (01/13) Page 14...
- Page 15 NOTE! TXV ADJUSTMENT DOES NOT APPLY TO SCW SERIES COMPRESSOR UNITS Figure 15. Cooling Mode Start-Up Process SHC-410-CP (01/13) Page 15...