Emerson AE4-1395- Manuals

6 © 2012 Emerson Climate Technologies, Inc. Printed in the U.S.A. AE4-1395 Application Engineering B U L L E T I N bar) for R-407C & R-22 to prevent evaporator coil icing. The cut in setting can be as high as 180 psig (12.5 bar) for R-410A and 105 psig (7.2 bar) for R-407C & R-22 to prevent ...

7 © 2012 Emerson Climate Technologies, Inc. Printed in the U.S.A. AE4-1395 Application Engineering B U L L E T I N Modulation Control Two different controls are available from Emerson to provide digital scroll modulation control, the Copeland Scroll ™ Digital Compressor Controller and the Emerson Co...

8 © 2012 Emerson Climate Technologies, Inc. Printed in the U.S.A. AE4-1395 Application Engineering B U L L E T I N hot-gas-bypass for capacity control are also ideal units for a digital scroll retrofit. Retrofit Applications To Avoid NOTICE Always check with the original equipment manufacturer, befo...

9 © 2012 Emerson Climate Technologies, Inc. Printed in the U.S.A. AE4-1395 Application Engineering B U L L E T I N 7. Using the appropriate lifting devices, carefully remove the compressor from the system. The following steps should be followed to install the digital compressor into the system. 1. B...

12 © 2012 Emerson Climate Technologies, Inc. Printed in the U.S.A. AE4-1395 Application Engineering B U L L E T I N 50% Loaded 80% Loaded PUMPING PUMPING 7.5 s 7.5 s 12s 3s NOT PUMPING NOT PUMPING One Cycle of 15 seconds 15 seconds Figure 1 Digital Cycle Example Figure 2 3 to 7.5 Ton Digital Scroll ...

13 © 2012 Emerson Climate Technologies, Inc. Printed in the U.S.A. AE4-1395 Application Engineering B U L L E T I N Figure 3 8 to 15 Ton Digital Scroll Cross Sectional View Removable External Solenoid and Coil Floating Seal Cavity Seal Cavity Vent 90 Frame Digital Scroll

14 © 2012 Emerson Climate Technologies, Inc. Printed in the U.S.A. AE4-1395 Application Engineering B U L L E T I N Figure 5 Figure 4 70 80 90 100 110 120 130 140 150 160 -20 -10 0 10 20 30 40 50 60 Condensing Te mperature (°F) Evaporating Temperature (°F) R-22, R-407C, R-410A Operating Envelope ZPD...

15 © 2012 Emerson Climate Technologies, Inc. Printed in the U.S.A. AE4-1395 Application Engineering B U L L E T I N Figure 7 Discharge Thermistors Figure 6 Compressor Capacity Graph *.ppt 3/23/2010 3:14 PM 1 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Co mp re s...

16 © 2012 Emerson Climate Technologies, Inc. Printed in the U.S.A. AE4-1395 Application Engineering B U L L E T I N Figure 8 3 to 7.5 Ton Modulation Valve Piping Figure 9 3 To 7.5 Ton Tandem Arrow on valve Must point to suction Oil Equalization Line Suction Gas Equalization Manifold Discharge Manifo...

17 © 2012 Emerson Climate Technologies, Inc. Printed in the U.S.A. AE4-1395 Application Engineering B U L L E T I N Observe the compressor suction & discharge pressures Are pressures changing with the modulation cycle? Operation is normal Yes No Yes Yes Measure the resistance of the coil Is the ...

6 © 2012 Emerson Climate Technologies, Inc. Printed in the U.S.A. AE4-1395 Application Engineering B U L L E T I N bar) for R-407C & R-22 to prevent evaporator coil icing. The cut in setting can be as high as 180 psig (12.5 bar) for R-410A and 105 psig (7.2 bar) for R-407C & R-22 to prevent ...

7 © 2012 Emerson Climate Technologies, Inc. Printed in the U.S.A. AE4-1395 Application Engineering B U L L E T I N Modulation Control Two different controls are available from Emerson to provide digital scroll modulation control, the Copeland Scroll ™ Digital Compressor Controller and the Emerson Co...

8 © 2012 Emerson Climate Technologies, Inc. Printed in the U.S.A. AE4-1395 Application Engineering B U L L E T I N hot-gas-bypass for capacity control are also ideal units for a digital scroll retrofit. Retrofit Applications To Avoid NOTICE Always check with the original equipment manufacturer, befo...

9 © 2012 Emerson Climate Technologies, Inc. Printed in the U.S.A. AE4-1395 Application Engineering B U L L E T I N 7. Using the appropriate lifting devices, carefully remove the compressor from the system. The following steps should be followed to install the digital compressor into the system. 1. B...

12 © 2012 Emerson Climate Technologies, Inc. Printed in the U.S.A. AE4-1395 Application Engineering B U L L E T I N 50% Loaded 80% Loaded PUMPING PUMPING 7.5 s 7.5 s 12s 3s NOT PUMPING NOT PUMPING One Cycle of 15 seconds 15 seconds Figure 1 Digital Cycle Example Figure 2 3 to 7.5 Ton Digital Scroll ...

13 © 2012 Emerson Climate Technologies, Inc. Printed in the U.S.A. AE4-1395 Application Engineering B U L L E T I N Figure 3 8 to 15 Ton Digital Scroll Cross Sectional View Removable External Solenoid and Coil Floating Seal Cavity Seal Cavity Vent 90 Frame Digital Scroll

14 © 2012 Emerson Climate Technologies, Inc. Printed in the U.S.A. AE4-1395 Application Engineering B U L L E T I N Figure 5 Figure 4 70 80 90 100 110 120 130 140 150 160 -20 -10 0 10 20 30 40 50 60 Condensing Te mperature (°F) Evaporating Temperature (°F) R-22, R-407C, R-410A Operating Envelope ZPD...

15 © 2012 Emerson Climate Technologies, Inc. Printed in the U.S.A. AE4-1395 Application Engineering B U L L E T I N Figure 7 Discharge Thermistors Figure 6 Compressor Capacity Graph *.ppt 3/23/2010 3:14 PM 1 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Co mp re s...

16 © 2012 Emerson Climate Technologies, Inc. Printed in the U.S.A. AE4-1395 Application Engineering B U L L E T I N Figure 8 3 to 7.5 Ton Modulation Valve Piping Figure 9 3 To 7.5 Ton Tandem Arrow on valve Must point to suction Oil Equalization Line Suction Gas Equalization Manifold Discharge Manifo...

17 © 2012 Emerson Climate Technologies, Inc. Printed in the U.S.A. AE4-1395 Application Engineering B U L L E T I N Observe the compressor suction & discharge pressures Are pressures changing with the modulation cycle? Operation is normal Yes No Yes Yes Measure the resistance of the coil Is the ...