AGL_HP_VS_YHV2P_E_Rev0 3
2 Product description
2.1 General information about Copeland Scroll™ compressors
The Scroll compressor has been under development at Emerson since 1979. It is the most efficient
and durable compressor Emerson has ever developed for air conditioning, refrigeration and heating
applications.
These application guidelines deal with the YHV*2P variable speed Copeland Scroll
compressors for use with R452B and R454B. These compressors have a speed range of 1200 to
7200 revolutions per minute, corresponding to 20 up to 120 Hz. They are intended for use either in
air-source or geothermal residential heat pump applications. They feature a three-phase brushless
permanent magnet (BPM) motor which is controlled by an Emerson ED3 motor control drive, referred
to as the "ED3 drive" or "drive" throughout these guidelines.
Table 1: Heating capacity in kW at below conditions
Conditions:
Evaporating dew temperature ..... -7 °C Condensing dew temperature .. 50 °C
Suction gas superheat ................. 5 K Condenser sub-cooling ............. 5 K
Ambient temperature ................... 35 °C
NOTE: R452B and R454B are classified as A2L (mildly flammable) refrigerants.
NOTE: The drive ED3 is not covered in detail in this document, for more information on the
motor control drive please refer to the ED3 User Manual (June 2019 version).
Figure 1: ED3 drive and YHV*2P compressor
The YHV*2P compressors with protection code "E" are sold as matched pairs with the ED3 drive,
designed in accordance with EN 60335-1, as listed in Table 2. The motor protection is implemented
in the ED3 drive.
The matched pairs have been designed for maximum efficiency and reliability. The drive will power
the compressor, control the compressor running speed, provide compressor and drive protection and
communicate with the master controller in ModBus RTU protocol. The drive requires cooling and is
typically installed in the unit near the compressor. To optimize drive efficiency and to limit
electromagnetic interferences, external chokes must be connected to the single-phase and three-
phase drives.
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