Application Limits; Comparison Between Zrh* And Zbh* Compressors; Special Requirements For Transport Applications - Emerson Copeland Scroll ZRH49K Series Application Manuallines

2.3.2 Application limits

CAUTION
Inadequate lubrication! Compressor breakdown! 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 5K is required.
NOTE: The application envelopes for all horizontal compressor models covered in these
guidelines are available
www.climate.emerson.com/en-gb.

2.3.3 Comparison between ZRH* and ZBH* compressors

ZRH* and ZBH* horizontal compressor models are basically available in two BOM variations:
▪
BOM 650 Compressor with brazing stub tubes, electrical box ready for molded plug IP65
▪
BOM 651 Compressor with Rotalock connections, electrical box ready for molded plug IP65
Table 2 below describes the differences and similarities between ZRH* and ZBH* models:
Compressor
version
Electrical connection ready for
ZRH*
Without oil service Schraeder valve
Electrical connection ready for
ZRHV*
Without oil service Schraeder valve
Electrical connection ready for
ZBH*
Oil service Schraeder valve
Electrical connection ready for
ZBHV*
Oil service Schraeder valve
Table 3: Differences and similarities between ZRH* and ZBH* horizontal scroll compressors
2.4

Special requirements for transport applications

Transport air-conditioning or refrigeration applications can be particularly sensitive and require
experience and thorough case-by-case analysis. Compared to static applications, additional
demands in terms of applicability to specific norm and standard requirements can arise. The system
designer must pay particular attention to higher demands with regard to shock stress, high vibration
levels, power supply and other installation characteristics.
The qualification for the parts and individual requirements, like system components, piping, piping
layout, fixation, as well as a study about shock, vibration and load requirements must be carried out
by the unit designer for the whole system. Emerson can provide support and assistance with
individual projects.
4
in Copeland
BOM 650
Brazing stub tubes
molded plug IP65
Without oil sight glass
Brazing stub tubes
molded plug IP65
Without oil sight glass
Variable speed
Brazing stub tubes
molded plug IP65
Oil sight glass
Brazing stub tubes
molded plug IP65
Oil sight glass
Variable speed
brand products Select
BOM 651
Rotalock connections
Electrical connection ready for molded
plug IP65
Without oil sight glass
Without oil service Schraeder valve
Rotalock connections
Electrical connection ready for molded
plug IP65
Without oil sight glass
Without oil service Schraeder valve
Variable speed
Rotalock connections
Electrical connection ready for molded
plug IP65
Oil sight glass
Oil service Schraeder valve
Rotalock connections
Electrical connection ready for molded
plug IP65
Oil sight glass
Oil service Schraeder valve
Variable speed
software at
C6.2.7/1007-0619/E