Wiring for PTC Overloads & Instuctions
22Z570 Terminal Box
Field Connection
120/240V
L
N
1
2
3
14
1
3
9
2
8
PTC
Wiring diagram - 5 Pin Terminal Plate (PTC only)
Field Connection
120/240V
L
N
1
2
3
14
PTC
1
3
7
9
2
8
Thermostat
Pins 8-9
Wiring diagram - 6 Pin Terminal Plate
Picture
Field Connection
To Control
Circuit
11
1
2
3
GND
Field Connection
Field Connection
To Control
Circuit
11
1
2
3
GND
Field Connection
06D Terminal Box
Application
The 22Z570 Terminal Box is a further development of
the reliable KRIWAN motor protectors.
The 22Z570 Terminal Box incorporates an INT69
I2 Diagnose and INT185 Current Transformer to
protect the compressor against thermal and electrical
overload.
The 22Z570 Terminal Box is designed to replace
existing terminal boxes on Carlyle 06D and 06CC
compressors. For 4 or 2 cylinder compressors, a
mounting spacer may be needed.
Functional description (with PTC thermistors)
Up to 9 PTC-sensors according to DIN 44081/082
with different nominal response temperatures can be
connected in series to the measuring circuit. If the
temperature in one of the areas monitored exceeds
the nominal response temperature of the respective
PTC-sensor, the sensor resistance increases and the
INT69 I2 switches off. See data sheet of INT69 I2 for
additional information.
This unit must be installed and connected
!
to a compressor that has a motor with PTC
sensors properly installed in series on each
phase.
One phase of the three phase power must go
through the INT185 current transformer. If the current
going through the current transformer exceeds the
programmed amps of the INT69 I2, the INT69 I2
switches off. See data sheet of INT185 for additional
information.
This unit must be programmed to the proper
!
MCC trip amps of the compressor. It comes
preprogrammed with a trip amp setting of 4A
as a default.
Installation
This unit is designed to be mounted on Carlyle
06D and 06CC compressors. Do not use on other
compressor models.
To ensure proper electrical grounding, this unit
!
must be installed to the compressor using two
bolts with star lock washers. Star lock washers
should penetrate any paint to ensure a good
electrical connection.
The mounting, maintenance and operation are
!
to be carried out by an electrician. The valid
European and national standards for connecting
electrical equipment and cooling installations
have to be observed. Connected sensors and
connection lines that extend from the terminal
box have to feature at least a basic insulation.
Need help?
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Questions and answers