Best ACES 2 User manual

ACES 2 (Cooling Only)
User Manual
BDOC999 | Issue No 4 | March 2020

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Important Safety Information
This manual may not be altered or reproduced in whole or in part by any means
without the express written consent of Best Energy Saving Technology Ltd.
The information contained in this document is believed to be accurate at the time of
publication, however, Best Energy Saving Technology Ltd assumes no responsibility
for any errors which may appear here and reserves the right to make changes without
notice.
Please read this manual carefully before installation, operation and maintenance of
the ACES 2 unit. The following symbols in this manual are used to provide warning
of danger or risk during the installation and operation of the unit.
Electric Shock Symbol: Carries information about procedures which
must be followed to reduce the risk of electric shock and danger to
personal health.
Safety Alert Symbol: Carries information about circumstances which if
not considered may result in injury or death.
Installation and maintenance of the ACES 2 should only be performed by qualified,
competent professionals who have received training and should have experience with
current devices.
Best Energy Saving Technology Ltd shall not be responsible or liable for any
damages caused by improper installation.
Best

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Considerations When Installing the ACES 2
Installation of the ACES2 must be performed by qualified personnel only, who follow
standard safety precautions through the installation procedures. Those personnel
should have appropriate training and experience of Aircon systems and electrical
systems. Appropriate safety gloves, safety glasses and protective clothing are highly
recommended.
During normal operation the device uses DC voltage and low current draw, But DC
voltage can still be dangerous and may appear on parts of the ACES2, including the
exposed circuit boards (when unit open). AVOID contact with any current-carrying
surfaces.
The ACES2 is NOT designed as primary protection devices and shall NOT be used as
primary circuit protection or in an energy-limiting capacity. The ACES 2 can only be
used as secondary protection. AVOID using under situations where failure of the
ACES2 may cause injury or death. AVOID using the ACES2 for any application
where risk of fire may occur.
Applying more than the maximum voltage to the ACES2 will permanently damage
the unit. Please refer to the specifications for all devices before applying voltages.
• Best Energy Saving Technology Ltd recommends using a dry cloth to wipe the
The device.
Important Note: if the equipment is used in a manner not specified by the
Manufacturer, the protection provided by the equipment may be impaired.

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ACES2 Description
The ACES2 enhances your energy management with automated intelligence, by fixing your aircon
temperature to desired value (no one can alter the settings via remote) and scheduling your multiple
aircon systems on or off depending on the time of day or demand.

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The Hardware
ACES2 is a plug-and-play system, easily and safely installed
by an electrician. It offers the chance to transform energy
management in a facility with automated intelligence that
switches your energy hungry Aircon systems equipment on
and off automatically.
That functionality can work on the basis of logic controls; a
set of rules which, if satisfied, ‘trigger’ the on or off function.
Or you can control it manually, switching equipment off
yourself when you see (with Eniscope’s analytics) that
consumption is excessive or active out-of-hours, for example.
A single ACES2 unit can control up to 4 Aircon units, to switch your devices on or off and has the
ability to monitor up to up to 6 temperature sensors.
The Software
The ACES2 uses on-board software to display live
input readings, and allow you to programme the logic
controller and switch your output relays on or off
manually.
You can also view your data remotely on temperature
graphs dating back a month or in table format along
with the recorded aircon states on our website, via
MQTT.
From this website you can setup remote scheduling for your aircon systems, such as ensuring they
off outside of operating hours or scheduling multiple units to be all on at peak day heat, while
operating just 1 aircon for the evening or overnight conditions.
You can also setup instant email alerts if temperature goes outside desired range and even remotely
increase the temperature without having to make another on site visit (or set different temperature
ranges for different times of the day).
Contact your Best Energy Saving Technology Distributor today to learn how your
organisation can benefit from the ACES2 system.

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ACES 2 Identification

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Note: The Relay circuit board has the
numbers identification printed on the
board.

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ACES2 Tools and Consumables
Tools:
1) Screwdriver set including a 2mm flat head screwdriver.
2) Wire strippers
3) Wire cutters
4) RJ45 Crimpers
5) Multimeter (for resistance measurements 0 – 50k)
6) Drill and Masonry drill set

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7) Ferrule crimping tool
8) Cat5 tester
9) Accurate/calibrated portable temperature probe
Consumables:
1) RJ45 connectors
2) CABLE - 2 wire 26AWG or larger signal cable for each aircon control.
3) CABLE - 3 wire SCREENED 26AWG or larger Cable for Temperature probe.

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4) Screws and raw plugs for mounting ACES2 to wall.
5) 0.5 (20 AWG, 0.5 mm²) and 0.25 (26 AWG, 0.25 mm²)
6) Electrical Tape
7) Terminal block (CH2 Spring Wire Connectors for instance)
8) Diode 1N5817
9) Optional: Connector Plug, Pins and crimper (Usually JST XHP-2, varies based on aircon model)

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SECTION 1
INSTALLATION
Important Safety Notice
SAFETY AT WORK
The owner, installer and user of this ACES2 device are responsible for its correct installation and
use, and must ensure that;
a) Only qualified persons install the unit.
b) Isolate Power Supply before installation.
c) The installation complies with the information contained in this publication.
d) All units must be installed in accordance with the current National Electrical Code.
Best Energy Saving Technology Ltd, or their agents do not assume any liability, expressed or
implied, for any consequences resulting from inappropriate, negligent or incorrect installation,
application, use or adjustment of this device.

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A. Mounting the ACES2
Opening the ACES2
There are 4 screws on the back of the ACES2 Enclosure,
once removed the front lid will come off and you can see
the boards inside.
Please note you will need to screw the lid down again
before final mounting to the wall.
Environmental
There are no specific ventilation requirements however, please check the environment, temperature
and humidity to ensure the ACES2 is within the correct operating conditions. Also before you begin
to mount the ACES2.
The ACES2 is Type 1, for indoor use only.
The ACES2 is designed to be mounted on a vertical surface within an electrical cabinet or wall
mount, using the provided glands for incoming cables. ACES2 can be mounted using the corner
mounting holes.
Dimensions
Height 144 mm
Width 236 mm
Depth 60 mm

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B. Location
ACES2 Location
You will need to consider the best location of the ACES2 unit to get all the connectivity options.
The ACES2 unit will need:
- Internet access via rj45
- An earthing point for the shielded cable
- Wall socket (100-240V) for power point
- 2 wire cable for each evaporator temperature sensor or thermostat to take control.
- 4 Wire screened cable for the temperature probe.
Normally we see partners installing the ACES2 unit near the Eniscope (So they can share the same
network access point and use the Eniscope earth point).
Temperature Probe Location
You need to decide the best locations for the temperature probe(s) and quantity needed, we
recommend 1 per Aircon unit or at least 1 per 5m2 floor area.
Obviously, you need to use your onsite observation for the best positions, but we recommend the
sensor being place in the middle of the area/room being covered and near the ceiling. If you have 1
sensor per aircon unit, then again position as such that it is near the aircon but away from the walls,
corners or obstructions.
Other considerations of places not to put the temperature sensor include:
- In direct flow path of aircon unit (remember we want the average room temperature, not the
evaporator air temperature like ACES1 use to).
- In the direct path of any fans installed on site.
- Above the ceiling tiles or ceiling of a room.
- Next to lights or heat sources.
- Keep away from doorways or windows (where you have temperature variation both sides).
- Keep the sensor out of direct sunlight.
- Touching metals, etc that could be hot or cold.

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C. Cables and Wiring
Power Cable
The unit comes with a UK plug end and a 110-240v supply, (The Smart Switch requires 8 to 55V
DC supply) to plug into a wall socket, we recommend you use an existing wall socket point or
create one from the Distribution board with a switch. If your country uses a different plug you can
keep the power supply and just get a cable with figure 8 C7 adaptor or replace the plug directly.
Ethernet Cable
Run the Ethernet cable between your ACES2 unit and the nearest internet access router so data can
be uploaded to the MQTT site and remote instructions can be sent to the unit.
Temperature Probe Extension Cable
Extend the temperature probe(s) up to 50m maximum, by using a 3wire (or 2 pair) screened
(shielded) signal cable (AWG26 or larger), connecting the temperature probe to the end via either
soldered connection or terminal block and put in the diode. Also ensure the screen is connected to
earth otherwise noise will effect the temperature probe!
If having more than 1 sensor, you must connect them in ‘daisy chain’ or line bus format and
not a star network. This means there only ever be 1 set of wires going to the ACES2 unit
(rather than each sensor wires return to the ACES2 unit which would form a star network).
You can connect the screen to earth by connecting to the Distribution Board
Earth bar or alternatively to the Eniscope Earth connector (but ensure the
Eniscope itself is connected to the Earth bar in the DB).

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Temperature Probe Wiring
Use the RJ12/RJ11 cable provided with your ACES2 and connect to the mainboard and the splitter
like shown below:
Below are the Splitter wiring details:

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If you decide not to use the splitter and you have
cut the RJ12/RJ11 cable for direct connection,
then pin2 (Vcc), pin4 (Data) and pin5 (ground).
The temperature sensor will come with 3 wires:
Red = Vcc (5v)
Black = Ground
Yellow = Data (1 Wire)
The sensor Data wire should be routed through
the relay0 NC (normally closed) and C
(common) pins using the green connector
provided. This will allow us to remotely reset
the sensor by operating the relay.
The final wiring should look like:

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Aircon Signal cables
Please use 26AWG 2 wire (1 pair) or larger, you will need 1 cable per aircon system and all cables
must lead back to the ACES2 unit.
Your first step is to open the Aircon Evaporators and identify the air temperature sensors. Please
note we want the room air sensor, not the coil temperature sensor.
Example of the common sensor
Next unplug the temperature sensors from the aircon control board (do not
remove, keep fixed in unit so can be plugged in again in future) and make note of
the connector types, you will then need to order the connectors and the pins to
put onto your control wire (along with the crimping tool if needed). Or otherwise
obtain permission to cut the sensor wire in the middle and join onto the existing
wire with terminal connector.
JST XHP-2 is a common connector
Now you need a warm and cold signal resistance value to
record for ACES2 settings, to do this connect a multimeter
set to resistance to the end of the temperature sensor and
place the sensor inside a fridge for 1 minute, then record the
resistance (usual values are around 16-19KOhms).
Next place the sensor on a hot source, such as hold tightly
in the palm of your hand for 2-3 mins until the value settles
(usually values are 4 to 8kOhms). Write these values down
onto the commissioning sheet as will be needed later.
Finally you can connect the end of your signal cable directly to the Aircon control board and close
the unit.

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Note: Remember a cold signal is used to turn the system off (0) and hot signal is used to bring
cooling on (1).
Now for terminating the signal cables to the ACES2 unit, pass the up to 4 signal cables (up to 4
Aircon control) through the glands and wire to the black terminals of the relay outputs.
For a cooling only system, we want:
out?=0 to be Off mode
out?=1 to be Cooling mode on
Note that Relay 0 is on the Microcontroller board and then Relay 1 to Relay 4 are on the separate
relay board (you do not wire the aircon signal cables to relay 0, start at relay 1). The numbering can
be seen on the circuit board also.

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D. ACES2 Access and Network Setup
Login
Login using the default IP 192.168.1.100 and user admin, password admin. You can login by typing
the IP into the browser like with Eniscope (but do not need /admin).
You will find it best to connect to the ACES2 unit with a direct cat5 cable from your laptop (bypass
any router for now).
Setting the IP Address
Click ‘Config/Network’, Change the IP settings to the required static IP, do not use DHCP.
Now press ‘Save and reboot’ option, please remember to login in again on the new IP address.
Remember that it is important to put in the correct IP range, gateway and DNS settings that match
your router. After the settings are correct, you can connect both your ACES2 unit and your laptop to
the router.

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Set the Time
Click the ‘time’ menu option and select the NTP option (or set the time manually) and save. Also
click the ‘set time in RTC’ to save to controller. Also you can select your timezone.
To check the operation is successful go to the ‘status’ screen and check the date and time displayed
up top.