4
Application Engineering
BULLETIN
AE4-1383 R5
© 2012 Emerson Climate Technologies, Inc.
Printed in the U.S.A.
CAUTION
POE 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).
Operating Envelope
Operating envelopes for the K5 compressors for
refrigeration are depicted in Figures 1A through 1H at
the end of this bulletin.
Extended ZF*K5E Operating Envelope
Figure 1H presents an extended envelope for the
ZF*K5E scroll. While this product is optimized for a low
temperature application, in some instances the ZF*K5E,
either with vapor injection or no injection at all, can be
applied in a medium temperature application. This may
be done to use common model numbers in a system or
to apply vapor injection for additional cooling capacity.
When applying with vapor injection, it should be noted
that the total amount of internal subcooling is limited
by the injection pressure at the compressor. In medium
temperature operation, this value is typically higher
than when a ZFK5 is applied at low temperature and
therefore the minimum subcooled liquid temperature
allowable exiting the economizer is higher (depending
on the refrigerant this may be as high as 75°F). Refer
to Emerson's Product Selection Software for estimated
values by compressor model.
Note! If applying without vapor injection the injection
port should be plugged. The vapor injection fitting is a
Rotalock design with a 1” x 14 rotalock thread size, the
fitting can be capped using the rotalock to stub tube
adaptor kit # 998-0034-18. A ½” copper line can be
inserted into the stub end of the adaptor and sealed off.
The rotalock adaptor with the supplied Teflon seal will
effectively seal the port and will not damage the fitting
or the compressor.
Introduction
The Copeland Scroll
™
refrigeration compressor product
offering has developed the K5 compressor for the 8 to
15 HP size range. The scope of this bulletin will cover
the application parameters unique to the ZB*K5E
and ZF*K5E refrigeration scrolls with CoreSense
™
technology.
Nomenclature
The Copeland Scroll compressor model numbers
include the nominal capacity at the standard 60 Hertz
“ARI” rating conditions with R-404A refrigerant.
Example
ZB76K5E-TFD-260
Z = Copeland Scroll
B = Application (B: Medium Temperature,
F: Low Temperature)
76K = Nominal Capacity (kBtu/hr)
5 = Model Variation Identifi er for the
K5 refrigeration scroll
E = Oil Type (POE)
TFD = Motor Version
260 = Build of Materials
Approved Refrigerants
Application
Model
Number
HP
Approved
Refrigerants
Low
Temperature
ZF34K5E 10
R-404A, R-507,
R-407A/C, R-22,
R-407F
ZF41K5E 13
ZF49K5E 15
Medium
Temperature
ZB58K5E 8
R-404A, R-507,
R-407A/C, R-22,
R-134a, R-407F
ZB66K5E 9
ZB76K5E 10
ZB95K5E 13
ZB114K5E 15
Note! For latest approved refrigerants and lubricants,
refer to Form 93-11, Emerson Accepted Refrigerants/
Lubricants, or contact your Application Engineer.
Note! The ZB*K5 compressors are each applicable with
R-134a, however, Emerson Climate Technologies has
released the ZB*K5B series for optimum performance
for lower R-134a-like pressures. See following table for
specifi c model numbers.
Optimized R-134a ZB*K5B Compressors
Model Hertz Voltage Capacity EER
ZB47K5B-TFD
60 460 46,500 7.38
50 380/420 38,500 7.33
ZB59K5B-TFD
60 460 49,600 7.04
50 380/420 59,500 7.04
ZB68K5B-TFD
60 460 68,700 7.25
50 380/420 57,000 7.25
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