ActronAir CO2 Sensor Installation Guide

ActronAir CO2 Sensor

Specifications :

• Model Number: CCO2-S*
• Family: Tri-Capacity, Hercules, Variable Capacity, Commercial
• Connector Type: 8 Pin, 4 Pin

Product Usage Instructions

Introduction
The ActronAir CO2 sensor is designed to be installed in an ActronAir ducted air conditioning system. Following the installation guide is crucial to ensure safe and correct operation.

Installation

Dimensions
Dimensions of the CO2 sensor:

• CCO2-S: 27.96 x 14.02 x 114.30 mm
• CCO2-MOD: 71.12 x 76.20 mm

Cable Specifications and Mounting Location
Refer to the user manual for specific cable specifications and mounting location instructions for the CO2 sensor.

DIP Switch Settings
Ensure correct DIP switch settings are configured as per the manual to optimize sensor performance.

Controller Setup

CO2 Sensor Setup
Follow the specific setup instructions based on the capacity and model of your ActronAir system.

• Tri-Capacity and Hercules: Detailed setup guidelines provided in the manual.
• Variable Capacity Commercial (720-960): Specific instructions for this model range.

Minimum Outside Air Setup (Demand Controlled Ventilation)
Configure the minimum outside air settings according to demand-controlled ventilation requirements.

• Tri-Capacity and Hercules: Instructions for these models.
• Variable Capacity Commercial (720-960): Guidelines for the specified range.

CO2 Status
Monitor and interpret CO2 status based on the guidelines provided in the manual for different models.

FAQ :

• Q: What should I do before installing the CO2 sensor?
  A: Before installation, carefully read the manual and ensure that the DIP switch settings are correctly configured.

• Q: Can the CO2 sensor work with any air conditioning system?
  A: The CO2 sensor is specifically designed for ActronAir ducted air conditioning systems, ensuring optimal performance and compatibility.

CO2 Sensor
Installation and Commissioning Guide

Sensor Model Number| Family| Model Number| Connector Type
---|---|---|---
**CCO2-S*| Tri-Capacity| PKY4 7 0 / 50 0 / 5 2 0 / 6 2 0 / 7 0 0 / 8 2 0 / 9 60T C A Y4 7 0 / 50 0 / 5 2 0 / 6 2 0 / 7 00T EV Y47 0 / 500 / 5 20 / 6 20 / 7 00T| 8 Pin
Hercules| PKV1400T/2000T
CCO2- MOD| Variable Capacity Commercial| PKV720T/850T/960T CRV/EVA720T/850T/960T| 4 Pin**

IMPORTANT NOTE:
Please read this manual carefully before installing or operating your air conditioning unit.

Installation and Commissioning Guide

Introduction
CONGRATULATIONS on your purchase of an ActronAir CO2 sensor. This sensor has been designed and engineered to give you control of the amount of fresh air to be introduced into your compatible ActronAir airconditioning units with outside air dampers, for the purpose of Demand Control Ventilation (DCV). DCV allows for the modulation of the outdoor airflow in response to the occupancy of the conditioned space. When the actual occupancy is below the maximum occupancy assumed for system design, the occupancy-based outdoor air rate may be reduced accordingly. This reduction of outside airflow which requires conditioning, will result in an increase in efficiency of operation and associated lower running costs. CO2 based DCV should not be applied in zones with indoor sources of CO2 other than occupants.
The procedures outlined in this guide are provided to correctly and safely install the ActronAir CO2 sensor to an appropriate ActronAir ducted air conditioning system. Failure to follow these procedures may result in personal injury, damage to the air conditioner, damage to the CO2 sensor or incorrect operation of the air conditioning system. Such failure could render your warranty null and void.
Installation

1. Dimensions

2. Cable Specifications and Mounting Location
   The recommended cable to use is 0.50mm2 shielded data cable. The steps on how to mount CO2 sensor are described below:

3. Remove screw located at the bottom of the tab.

4. Press the tabs located on top and bottom of the rear plate and lift the cover.

5. Select and mount the rear plate in an appropriate location – the CO2 sensor is to be mounted 1.0 to 1.8 meters above the floor, away from lights, diffusers, doorways and external influences .
   This will ensure accurate CO2 concentration levels measured based on occupancy level in conditioned space.

6. Pull the wires through the rear plate base hole and make necessary connections. Ensure cable entry gaps are sealed.

7. Secure the cover back to the rear plate.

8. DIP Switch Settings
   To gain access to the DIP switch, remove the cover the CO2 sensor and locate the switches.

Please follow the DIP switch configuration in the figure below to ensure proper functionality of the CO2 sensor.

Tri-Capacity and Hercules

Switch Settings
Each switch may be set to ON or OFF based on the required output, example as below:

Switch Positions
There are six switches to configure the output of the CCO2 sensor. Switch position designations are as follows:

• DIP Switch Position 1: CO2 Output Selection
• ON: Output set to voltage
• OFF: Output set to current
• DIP Switch Position 2: Not used Must always be set to OFF

DIP Switch Positions 3 and 4: Current or Voltage Output Range Selection
Depending on the Switch setting of Position 1, Switch Position 3 and 4 may be set to configure the Output Range. The table below shows the Output Range indicated in the first column.

| DIP Switch Setting| Actron Product Application
---|---|---
Output Range| Position 1| Position 3| Position 4
2- 10V| ON| ON| OFF| —
0-10V| ON| OFF| OFF| *CG10K
0-5V| ON| OFF| ON| —
1- 5V| ON| ON| ON| —
4-20mA| OFF| ON| OFF| **Hercules/Tri-Capacity
0-20mA| OFF| OFF| OFF| —
0-10mA| OFF| OFF| ON| —
2- 10mA| OFF| ON| ON| —

See 02.04.04 for illustration of DIP switch setting required when connected to CG10K
See 02.04.03 for illustration of DIP switch setting required when connected to Tri-Capacity or Hercules unit
4-20mA output DIP Switch Setting
These settings will output readings within the range of 4-20mA based on CO2 concentration levels.
Example application for this setting are Tri-Capacity (for PKY/CAY fitted with CM100 controller) and large Hercules (PKV) units.

VDC output DIP Switch Setting
These settings will output readings within the range of 0-10VDC based on CO2 concentration levels.
Example application for this setting is when connected to CG10K or PKY/CAY (Tri-Capacity fitted with uPC Controller only).

NOTE
Voltage divider terminal blocks are required for 0-10VDC operation with uPC Controller. Refer to Wiring Diagram 02.04.04. for installation instructions.

Variable Capacity Commercial (720-960)

Switch Settings

• There are two different DIP switches on the CCO2-MOD, SW2 (8 DIP switch) which is for configuring the RS-485 address value and SW1 (4 DIP switch) which configures other hardware and software options.
• SW2 is used to configure the RS-485 address of the device. The factory setting address is 127 and which is also the address required to communicate with the ActronAir board. To set the MAC address to  127, all DIP switch positions must be set to ON, except for position 1.
• If the address needs to be changed, the assignment is determined by adding the values for each of the switches that are on. In this example 64+32+16+8+4+2+1 = 127
• SW1 will come default with DIP switch positions 1 and 2 on and only 1 and 2 is required for communication to the ActronAir Board.
• Auto Serial Configuration (AUT)
  This value enables or disables the automatic baud rate detection. If the device fails to communicate on the MS/TP bus or the serial configuration is not 8 data bits, no parity and 1 stop bit, then this value should be set to “OFF”, and the serial configured manually.

Auto baud disabled, serial baud rate, parity, and stop bits must be set manually

 Wiring Diagram

Tri-Capacity Models – CM100

ILLUSTRATION SHOWN IS CONNECTION TO MULTI INPUT 2

NOTE : CO2 SENSOR MAY BE CONNECTED TO MULTI INPUT 1 OR MULTI INPUT 2. ILLUSTRATION SHOWN DEPICTS CO2 SENSOR CONNECTED TO MULTI INPUT 2. VOLTAGE DIVIDER TERMINAL BLOCKS (ACTRONAIR PART NO. 2045-080 MUST BE USED FOR 0-10V ANALOGUE INPUT

Tri-Cap 0-10VDC Voltage Divider Terminal Block – uPC

MULTI-INPUT 0-10V SIGNAL FOR UPC CONTROLLER

• STEP 1: REMOVE EXISTING TERMINAL BLOCKS
  

• STEP 2: INSTALL VOLTAGE DIVIDER TERMINAL BLOCKS

VCC (72-96kW) Models

 Controller Setup

The optional CO2 sensor function will be operational when the CO2 sensor is enabled and configured.
For third party control, please contact third party supplier as controller configuration will be a different process.
CO2 Sensor Setup
The CO2 levels and corresponding damper positions is to be adjusted in accordance to the applications requirements. Steps provided in succeeding instructions are aimed to configure the setting as below. Consult the relevant standards as required for your application.

Tri-Capacity and Hercules
The unit control mode is to be set to INTERNAL SENSOR. This can be set through the Service Menu or via seven segment. The input type is 4-20mA (for CM100 controller) or 0-5V (for uPC controller) and the sensor is connected to the following ports as described below:

• Hercules – universal input U12
• Tri-Capacity – Multi Input 1 or 2 (Note: Wiring Diagram and CO2 Sensor Setup shown for Multi Input 2)

NOTES
The CO2 sensor is compatible with the following software:

• For Hercules with (CM100): 2021-136-1030 and onwards
• For Tri Capacity with (CM100): 2021-136-2008 and onwards
• For Tri Capacity with (uPC): 2021-136-3000 and onwards

The following steps will be necessary to install and commission the CO2 sensor.

NOTES

• Steps 1 – 2 are only applicable for Tri-Capacity (PKY/CAY) units only.
• Steps 3 and onwards, will be relevant to both Hercules and Tri-Capacity units.

1. Select Service page Gfc8 to assign the CO2 sensor to Multi input 2.

   • NOTE
   • For this Tri-Capacity example, CO2 sensor will be assigned to Multi Input 2.
   • NOTE
     Do not change your existing configuration for Multi Input 1.

2.  Alter the option of Multi Input 2 to YES. Ensure CO2 SENSOR input is selected with a probe type of 4-20mA (for PKY/CAY fitted with CM100 controller) or 0-5V (for PKY/CAY fitted with uPC controller) as displayed in screenshot below.

   • For PKY/CAY fitted with CM100 controller
   • For PKY/CAY fitted with uPC controller

3. Navigate to Economy Setting page Gfd1 from Service Menu.

4.  Press Enter to select Enable CO2 and change setting to Yes to enable the CO2 sensor.

   • NOTE
     The number entities are represented in the damper position picture in step 5.

5. Adjust CO2 levels and corresponding damper positions to suit your applications requirements. Consult the relevant standards as required for your application.

6. Variable Capacity Commercial (720-960)

   • Connector to be used is RJ485.

   • The CO2 sensor may be enabled by the following options:

   • NOTE
     For detailed instructions on enabling the CO2 sensor using NEO, go to the Setting Economy Cycle Section in the Installation and Commissioning Guide of the Unit.

   • NOTE
     The CO2 sensor is compatible with the following software with CMI board:

Outdoor Board
By using the Outdoor board Seven Segment buttons, a linear scale can be created for the outside air damper. To enable the CO2 sensor go to the following menu.

Minimum Outside Air Setup (Demand Controlled Ventilation)

Tri-Capacity and Hercules
Select service page Gfc31 to check the CO2 sensor operating range, enable/disable sensor fault alarm and the corresponding alarm levels, as shown below. In the event that the sensor is not operating or is out of range, the outside air will operate at the outside air minimum setting as shown on screen Gfd1.

NOTE
The screenshot displayed below from the Hercules CP10 displays U12 Input and is set to 4-20mA. For Tri-Capacity CP10 display, this is omitted as the CO2 sensor input is setup in Gfc8.

Variable Capacity Commercial (720-960)

NOTE

• The table shown below is from the Variable Commercial Capacity Installation and Commissioning Guide where the CO2 setting is enabled.
• To set the minimum, maximum damper positions and the CO2 scale go to the following menus.

CO2 Status

Tri-Capacity and Hercules
To view the current status / levels of concentration of the CO2 in the condition space, please flow the steps below:

NOTES

• The screenshots portrayed below are taken from the Hercules CP10. The same steps maybe followed on the Tri-Capacity’s CP05 to determine the CO2 concentration levels, however, contents on E1 page may vary.
• Go to Status Screen Page E1 and locate the last field named CO2 Sensor on page E1, this will display the CO2 concentration levels in the conditioned space.

Variable Capacity Commercial (720-960)
The CO2 maybe set up via the outdoor board, please refer to section 03.02.02 for the parameters required.

 Specifications

Peak: 3.75 W

| Average: 0.5 W

Peak: 1.2 W

Communication Protocol| N/A| 2-Wire RS-485, Modbus RTU
Output| 4 to 20 mA (max. 500 Ω)| Modbus
Weight| 125 g
CM100 Software|
Hercules| 2021-136-1030 onwards| N/A
Tri-Capacity| 2021-136-2008 onwards| N/A
VCC70-100| N/A| CMI 4.18
Connecting Cable|
Maximum Cable Length| 50 metres| 100m
Recommended Cable| VCC – 0.50mm2 – 0.65mm2 twisted pair cable

CO2 Sensor Installation and Commissioning Guide
Document: 9590-3011 Ver. 8 240603

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