© 2018 Emerson Climate Technologies, Inc.
7
AE4-1431 R1
Overheating! Bearing damage!
Do not operate
compressor without refrigerant charge or without it being
connected to the system.
Contact with POE!
POE may cause an allergic skin reaction and must
be handled carefully and the proper protective
equipment (gloves, eye protection, etc.) must be
used when handling POE lubricant. POE must not
come into contact with any surface or material that
might be harmed by POE, including without
limitation, certain polymers (e.g. PVC/ CPVC and
polycarbonate). Refer to the Safety Data Sheet
(SDS) for further details.
2. Product Description
These application guidelines deal with vertical single
Copeland Scroll compressor models ZB07KAU,
ZB09KAU, ZB10KAU and ZB11KAU.
2.1. Nomenclature
The model designation contains the following technical
information about the standard compressors:
2.2. Application
2.2.1. Qualified refrigerant and oil
Compressors
ZB07KAU, ZB09KAU,
ZB10KAU
Qualified refrigerant
R-290
Low, Medium Temp Oil
POE68B (Hatcol 4467)
Refer to Emerson Accepted Refrigerant List
for more options or details.
2.2.2. Maximum
Allowable
Operation
Pressures
The Maximum Allowable Operation Pressure are the
pressure values at the high- and low-pressure sides up
to which it is safe to operate the compressor. Safety is
established in compliance with the relevant standards
applicable to the given product
Compressor
Maximum Allowable Operation
Pressure
High-pressure
side
Low-pressure
side
ZB07KAU
to ZB11KAU
406 PSIG
(28 bar)
247 PSIG
(17 bar)
2.2.3. Application limits
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 20°F (10 °K) is
required measured 6” (152 mm) from the
compressor suction inlet.
Refer to
2.2.4. Oil level
ZB*KAU compressors have no oil sight glass which
ensures maximum hermeticity to allow operation with
flammable refrigerant, Consequently, it is difficult to get
an indication of the actual oil level in the compressor
during operation. For
new applications, OEM’s are
required to order a sample compressor equipped with
an external site tube for lab testing to confirm operating
oil levels (see
). Refer to
for details about Oil Filling Test for new
applications.
The factory oil filling for all ZB*KAU compressor models
has been optimized to a value of 16 oz (473 mL). This
is a reduced oil filling which makes the compressor
applicable to run in systems with refrigerant charges
below 150 grams. This reduced oil filling is close to the
minimum oil required, Oil Filling Test of Appendix B is
required for application approval. See
reference.
CAUTION
WARNING
CAUTION
