10 AGL_HP_VS_YHV_RG_RT_EN_Rev00
NOTE: Operate matched pairs of compressor and drive combinations only.
NOTE: Before first start, each drive has to be configured according to the compressor model.
NOTE: The ED3/EV3 drive overload protection aims at protecting the drive and the
compressor. It cannot be used in the system as an operating envelope limitation. For more
details on the overload protection refer to the ED3 & EV3 User Manuals.
2.6.3 PED category & maximums allowable pressure PS
The nameplate of the compressor contains information about the maximum allowable pressure PS,
the minimum and maximum allowed temperatures TS, the internal free volume and the fluid groups
of the refrigerants qualified for the compressor model range. Values are given f or both pressure
ranges on low- and high-pressure sides.
Compressor
Low-
side
High-
pressure side
Low-
side
volume
LP side
volume
HP side
YHV029RG/RT 21.0 bar(g) 42 bar(g) 50 °C 2.0 L 0.3 L
YHV046RG/RT 21.0 bar(g) 42 bar(g) 50 °C 2.0 L 0.3 L
YHV072RG/RT 21.0 bar(g) 42 bar(g) 50 °C 3.8 L 0.6 L
Table 5: Maximum allowable pressures, temperatures and internal free volumes
The PED category is assigned according to the Pressure Equipment Directive PED 2014/68/EU.
Requirements apply to the relevant pressure levels in the compressor when the product of the
"pressure relative to the environment" by the "related internal f ree volume" (PxV) exceeds given
limits. When calculating the PED category, the high- and low-pressure sides have to be calculated
separately. The highest of the calculation results is considered.
Additionally, a distinction must be made between refrigerants of fluid group 1 (flammable) and fluid
group 2 (non-flammable). As a result, identical compressor models may be subject to different PED
categories depending on the refrigerant used.
YHV*RG/RT scroll compressors can be operated with both A2L and A3 refrigerants (fluid group 1).
Compressor range Refrigerant Fluid group
class
YHV029RG & YHV046RG R290 1 1
YHV029RT & YHV046RT R454C 1 1
YHV072RG R290 1 2
YHV072RT R454C 1 2
Table 6: PED class based on refrigerant used
2.6.4 Admissible ambient temperature and humidity ranges
YHV*RG/RT compressors must comply with the ambient temperature and humidity ranges specified
in Table 7 below, both for storage and in operation.
Compressor
model
relative
humidity
temperatures in storage
or at standstill
temperatures in
operation
YHV*RG
YHV*RT
30 % / 95 %
No condensing
- 35 °C / 50 °C - 35 °C / 60 °C
Table 7: Allowable ambient temperature and humidity ranges for YHV*RG/RT compressors
NOTE: Please refer to the EV3 & ED3 User Manuals for the ambient temperature and humidity
ranges of the drive.