Emerson Copeland Scroll YHV 2P Series User Manual

6 AGL_HP_VS_YHV2P_E_Rev0
2.4.2 Admissible temperature and relative humidity ranges
The Scroll compressor must comply with the ambient temperature and humidity ranges specified in
Table 5 below, both for storage and in operation.
Compressor
model
Min / max relative humidity
Min / max ambient temperatures
in storage or at standstill
in operation
YHV*2P
30 / 95%
No condensing
-35 °C / 50 °C
-35 °C / 60 °C
Table 5: Acceptable ambient temperature and humidity ranges for the compressor
Compressor
PS
High-pressure side
PS
Low-pressure side
TS
Low-Pressure side
PED
category
YHV*2P
49 bar(g)
28 bar(g)
-35 °C
2
Table 6: Maximum allowable pressure
2.4.3 Application limits & operating envelopes
CAUTION
Inadequate lubrication! Compressor breakdown! Copeland Scroll
compressors are qualified for operation inside the envelope published by
Emerson. The envelope is defined according to Emerson’s testing and
experience. Operating a compressor outside the envelope might lead to
compressor failure which would be the heat pump manufacturer’s
responsibility. The superheat at the compressor suction inlet must always be
sufficient to ensure that no refrigerant droplets enter the compressor. For a
typical evaporator-expansion valve configuration a minimum stable superheat
of at least 5 K is required. In the same way, the superheat at the compressor
suction must always stay below a maximum limit specified by Emerson,
depending on the model and for which the operating envelope is defined.
YHV*2P compressors operating envelopes depend on the running speed. The envelope limitations
are mainly related to lubrication and power limitation.
The lower right boundary of the operating envelope is the minimum compression ratio required to keep
the scrolls loaded. Operation below this boundary could result in the compressor intermittently
loading and unloading and noisy operation.
The upper left boundary of the envelope represents the maximum compression ratio. If the operating
condition approaches this boundary the compressor discharge temperature will begin to approach
the maximum scroll temperature allowed by the discharge line temperature sensor – see details in
chapter 4.5 "Discharge gas temperature protection". The temperature sensor must signal the drive or
system unit controller to shut down if the discharge line temperature exceeds the specified temperature
on the operating envelope.
For DLT-control mode with YHV*2P compressors in the upper left boundary of the envelope, please
also refer to chapter 2.4.4 "Discharge line temperature control mode".

Emerson Copeland Scroll YHV 2P Series Specifications

General

Brand	Emerson
Model	Copeland Scroll YHV 2P Series
Category	Air Compressor
Language	English