ACT ACT-VCC-1000 DC User manual

ACT-VCC-1000 DC Cabinet Air Conditioner
User Manual
Read this manual carefully before installation and use.

Rev A
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Summary
This manual describes the ACT-VCC-1000 DC Air Conditioner and includes the product description, working
principles, wiring diagrams, operating instructions, routine maintenance, troubleshooting, and technical
specifications of this model.
Table of Contents
Summary ......................................................................................................................................... 2
1. Instructions................................................................................ 3
2. Product Overview .......................................................................... 3
2.1 Product Dimensions.................................................................................................................. 3
2.2 Application Notes...................................................................................................................... 4
2.3 Working Principles.................................................................................................................... 4
2.4 Product features........................................................................................................................ 4
2.5 Technical Specifications ........................................................................................................... 5
2.6 Air Circulation and Remote Mounting ...................................................................................... 5
2.7 Operation of the Unit................................................................................................................. 6
2.8 Condensate Handling................................................................................................................ 6
2.9 LED Display Parameter setting guide: ..................................................................................... 7
2.10 Alarm and fault management.................................................................................................. 7
3. Packaging and Shipping ................................................................... 8
4. Unpacking and Acceptance ................................................................ 9
5. Installation ................................................................................ 9
5.1 Physical Installation.................................................................................................................. 9
5.2 Electrical Connection.............................................................................................................. 10
6. Running and Testing ...................................................................... 12
6.1 Pre-operational checks ........................................................................................................... 12
6.2 Operating the Unit ................................................................................................................... 13
6.3 LED display manual ................................................................................................................ 13
7. Maintenance and Warranty ................................................................ 14
7.1 Product maintenance.............................................................................................................. 14
7.2 Service and Repair .................................................................................................................. 16

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1. Instructions
This manual is written for: ACT-VCC-1000-DC
•Be sure to read this manual carefully before installing or operating the unit.
•To be covered by ACT’s warranty and access normal warranty service, the user(s) must comply with all local and
industry standards, as well as with the instructions in this User Manual.
2. Product Overview
The ACT-VCC-1000-DC Air Conditioner is an enclosure cooling device intended for applications where the internal air
of a sealed electrical enclosure must be cooled or maintained at a particular temperature. This manual will provide an
overview of the product including:
•Recommended uses
•Product nameplates
•Operating principles
•Product features
•Product composition
•Technical specifications
•Usage within a ducted design
•Control logic
•Communication protocols and user parameters
•Alarm options
•Troubleshooting
This product should be used strictly within accordance and with the relevant provisions of this manual.
2.1 Product Dimensions
Figure 2.1 Product dimensions

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2.2 Application Notes
This product is intended for use in industrial equipment applications that utilize a 48V DC
power supply. The purpose of its installation is to control cabinet temperature between 20
to 45℃; keeping within this range will ensure that all thermal sensors operate as intended.
Safety and Use Instructions:
oTransport the unit in an upright position
oDo not store in a high temperature, high humidity environment (<70℃, <95%).
oIf the unit will not be in use for a long period, disconnect the main supply power
2.3 Working Principles
•The Air Conditioner uses a standard vapor compression cycle
oThe main parts of the cooling system include: compressor, condenser, expansion valve, evaporator,
internal fan, and external fan
•Principle of refrigeration: The compressor compresses warm, low-pressure vapor into hot, high-pressure vapor.
This hot high-pressure vapor travels through a condenser where it dissipates heat tothe environment. The high-
pressure condensate then flows through an expansion valve which reduces the fluid’s pressure and partially
vaporizes the fluid. The expansion and partial vaporization cool the fluid (liquid and vapor mixture), which
allows the remaining liquid to vaporize and cool the air flowing through the evaporator.
•The air internal to the cabinet is circulated through the evaporator to be cooled to the desired temperature
•Air outside of the cabinet flows through the condenser and is used to condense the hot vapor in the
refrigeration cycle.
•Air outside of the cabinet never mixes with the air internal to the cabinet
2.4 Product features
This product isdesigned with all DC driven componentssuch as fansand thecompressor. This product hasthe following
features:
•Power supply voltage range: 42~60 VDC
•DC units can be up to 50% more efficient than comparable AC units
•DC motor speed control provides low noise operation and low energy consumption
•R134a refrigerant
Manufacturer is not responsible for damage caused by operation outside of designated
intended use. Warranty is void if the following instructions are not followed:

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2.5 Technical Specifications
Table 2.1 Technical Specifications
Note: Parameters will be subject to the latest specification
2.6 Air Circulation and Remote Mounting
Internal circulation and external circulation of the air is shown in Figure 2.3. Ducting and a separating plate are
not required for enclosure mounting applications. If the unit is to be mounted remotely to cool an enclosure,
ductwork and a separting plate must be used as shown in Figure 2.3. Ductwork should be made as short as
possible to minimize the impact on the performance of the unit. Any additional pressure drop incurred by the fans
will reduce the performance of the unit. Be prepared to oversize the cooling unit accordingly. Any grills or filters
added to the unit or to accompanying ductwork will also result in reduced potential cooling from the unit.
Figure 2.3: Cabinet air circulation

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2.7 Operation of the Unit
When the unit is turned on, it will perform a self-test before starting standard operation. If any faults are detected
during the self-test, the system goes into the ‘fault’ mode; an alarm will be triggered and an error code will be shown
on the LED display to alert the user. If there is no fault after the self-test process, the system will automatically begin
normal operation.
•The self-test procedure is as follows:
1. Test of the internal fan;
2. Test of the internal temperature sensor;
3. Test of the internal fan;
4. Test of the compressor.
•The normal operating mode includes standby mode and active cooling mode:
oStandby mode: If the air temperature is lower than the air conditioner set point, the unit will remain in a
standby mode, where only the internal fan runs at its lowest speed.
oActive Cooling mode: If the air temperature is greater than the setpoint temperature, the unit will run on
normal cooling mode to achieve the setpoint temperature.
2.8 Condensate Handling
During normal operation in a humid environment, the unit may produce condensate on the evaporator coil inside of the
casing. A condensate drain port is provided on the bottom of the unit as shown in Figure2.4. Condensate will naturally
flow out of this port under normal operating conditions. If it is not permissible for certain applications for water to drain
directly out of this port, a fitting is provided for connection of an appropriately sized drain tube to relocate condensate
to an available drain. Most applications will produce less than 150 mL/hr of condensate and drain tubes should be
sized accordingly.
Figure 2.4: Bottom View of unit, showing Condensate drain port

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2.9 LED Display Parameter setting guide:
Table 2.2: Parameter setting range
Items
code
Item name
Default
Value
Value Range
Unit
P01
Communication address for master/slave
unit setting
1 - slave
unit
1 –slave unit; 2 –master unit,
/
P02
Compressor starting temperature
35
18~50
℃
P03
Hysteresis value for compressor start/stop
5
1~5
℃
P04
High-temperature alarming value
58
35～100
℃
P05
Low temperature alarming value
-42
-42～25
℃
P06
Heater starting temperature value*
5
-45~15
℃
P07
Hysteresis value for heating start/stop*
10
5~20
℃
P08
External input signal type definition
2
0: disable; 1: NO type; 2: NC type
P09
Master/Slave function definition
0
0 –disable 1 - enable
P10
Master/slave switching period for each unit
12 hours
0~72 hours
P97
Return to factory setting
/
Pressing the “S” key will return the
product to default factory settings
*Heating functions are optional and not included on all units.
The above parameters can be accessed through RS485 communication if necessary. For questions, please contact
ACT’s sales staff at 717-295-6061.
2.10 Alarm and fault management
During normal operation, the LED displays the return air temperature leaving the air conditioner. An alarm signal will
alert the user to an error and the alarm code error message will be displayed alternately with the return air
temperature. Alarm codes are as follows:
Table:2.3 Error Code meanings
Error Code
Code Definition
E01
Internal fan No.1 fault warning
E02
Internal fan No.2 fault warning
E03
External fan No.1 fault warning
E04
External fan No.2 fault warning
E05
Compression fault warning
E06
Communication fault warning
E07
High-temperature warning

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3. Packaging and Shipping
•The Air Conditioner should be packaged in a wooden crate, as in figure 4.1 (1 pcs/box or 10 pcs/box), with
foam protection surrounding the unit.
•When transporting this Air Conditioner, please pay attention to the following:
Figure 3.1 Packaging marking
•During Handling or transport, the Air Conditioner must be upright. Do not place flat or tilted.
•The Air Conditioner is a precision instrument and should be handled with care. Any secondary shipping must
be capable of protecting the unit from damage.
E08
Low-temperature warning
E09
DC Power overvoltage warning
E10
DC Power undervoltage warning
E11
Refrigerant circuit pressure is too high warning
E12
Refrigerant circuit pressure is too low warning
E13*
Heater current overload warning
E14*
Heater current too low warning
E15
Return air temperature sensor fail warning
E16
Condenser air temperature sensor fail warning
E17
Ambient air temperature sensor fail warning
E18
Control signal input: on / off dry-switch type
E21*
AC voltage too high warning
E22*
AC voltage too low warning
E23*
Compressor Current Overload warning
E24*
Compressor Current Underload warning
E25
Communication Loss warning for master/slave pairs
*Note: Gray text items are not applicable for all products.

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4. Unpacking and Acceptance
•Make sure the package is upright as shown in Figure 4.1 before you open the package,
Figure 4.1 packaging
•Please check that the packing straps are unbroken and that the wooden box is undamaged, not deformed or
wet.
•Use scissors or a knife to dismantle the packing belt, then open the wooden box.
•After opening the package, please check the contents against the packing list.
5. Installation
5.1 Physical Installation
Please follow the below diagram, figure, and instructions for installation:
Figure 5.1 Installation diagram

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Figure 5.2 Dimensions for cut-out in enclosure door
Installation steps:
1. Mark the cabinet with the cut-out dimensions according to Figure 5.2
2. Cut out the shaded area
3. Remove the product from the shipping crate with care
4. Install the Air Conditioner on the cabinet as shown in Figure 5.1
5. The mechanical portion of the installation is now finished. Adhere to the “Install Checklist.”
Install Checklist
✓The ambient air must be under 55℃, and the humidity under 95%.
✓Make sure that the product is installed within 3° of plumb level, relative to the vertical direction
✓Make sure that the cabinet is well-sealed (using the supplied gasket)
✓Do not turn the unit on immediately after finishing the installation; the unit must remain standing vertically for
more than 30 minutes before being turned on to allow the compressor oil to drain back to the compressor.
✓Complete wiring 5.2 and pre-operational 6.1 checks before turning -on the unit.
5.2 Electrical Connection
**Electrical wiring should be performed, only by skilled technicians, before powering
on the product**
The power supply must be in accordance with the technical specifications of the unit. Power supply cable sizes and
circuit breaker sizes are recommended below:
Current documentation, cut out templates, DXF and Step files can also be found on our website
at https://www.1-act.com/enclosure-cooling/resources/enclosure-cooling-dxf-and-step-files/