Zehnder CO₂ Sensor

Foreword

Refer to the full manual for detailed information and the applicable safety and installation regulations.

Questions

For all questions and the latest full manuals, contact your Zehnder branch. Contact details are provided at the back of these quick start installer and user instructions. These manuals, other product information, and instructional videos can also be accessed by scanning the QR code.

All rights reserved. This installation manual has been compiled with the utmost care. However, the publisher cannot be held responsible for any damage caused by failure to follow safety or operating instructions. In the event of disputes, the Dutch text prevails.

Reading Guide

The following symbols are used in this installation manual to draw the reader's attention to safety aspects and important information:

Zehnder America
6 Merrill Industrial Drive, Hampton, NH 03842
T 603 601 8544 www.zehnderamerica.com

1. Features and Benefits

The CO₂ Sensor measures the amount of CO₂ in the air of the room in which this sensor is installed. The device sends the results to the ventilation system. If the CO₂ level is too high, the system regulates the ventilation based on the maximum CO₂ values. In this way, healthy air quality in the room is maintained. Reducing high CO₂ values in the home is conducive to concentration, good sleep quality, and helps prevent headaches.

2. Safety

[alert] The CO₂ Sensor may only be used in the manner described in the user manual.

[alert] Always follow local safety regulations when using this device.

[alert] The device may only be used if it has been properly installed according to the instructions and guidelines found in the installation manual.

[alert] The device may be used by: children of 8 years and older; persons with reduced physical capabilities; persons with reduced sensory capabilities; persons with reduced mental capabilities; and persons with lack of experience and knowledge, as long as they are under supervision or have received instruction for safe use.

[alert] The device may only be installed and maintained by a qualified professional.

[alert] The responsibility for the correct use of the device lies with the end user. The manufacturer cannot be held responsible for any (consequential) damage caused by inexpert, incorrect, or inadvisable use.

[alert] Do not get the device wet. Do not install it in a damp place.

2.1 Safety regarding assembly and installation

[alert] The CO₂ Sensor may only be installed as described in the corresponding installation manual. The sensor is connected to 120V power. All electrical work should be done by a qualified professional and follow local code and regulations.

2.2 Safety regarding use

[alert] The CO₂ Sensor may only be used as described in the corresponding user manual.

2.3 Intended use of the device

[alert] The CO₂ Sensor measures the amount of CO₂ in the air of the room in which this sensor is installed. The device sends the results to the ventilation system.

2.4 Inexpert use of the device

[alert] Do not open the casing. The installer makes sure that all parts that can cause personal injury are behind the casing.

[alert] Children must not play with the device.

[alert] Children must not clean and maintain the device unsupervised.

[alert] Changes or modifications not expressly approved by Zehnder America could void the user's authority to operate the equipment.

3. Disassembly and Disposal

If the CO₂ Sensor is disassembled, the waste disposal regulations applicable on-site and at the time of the disassembly must be observed. Dispose of the CO₂ Sensor in an environmentally friendly way. Do not dispose of the unit together with household waste. The CO₂ Sensor can be handed in at a collection point for electronic waste. It is the responsibility of the owner of the CO₂ Sensor to dispose of the unit responsibly.

4. CO₂ RF & 0-10V Sensor Legend

Figure 4.1 - Front of the CO₂ Sensor

Description of the sensor front: A rectangular device with rounded corners. On the front face, there are indicators and controls. The legend identifies the following components: 1. Top LED 2. Middle LED 3. Bottom LED 4. Operating button (circular) 5. CO₂ LED (green, circular indicator).

5. Commissioning the CO₂ RF Sensor

1. Activate the pairing mode of the ventilation unit.
   • All ventilation units (except the ComfoAir Q): turn off the electrical current from the ventilation unit, wait at least 5 seconds, and then switch the current on.
   • ComfoAir Q with RF receiver: activate the menu on the ventilation unit via ADVANCED SETTINGS > RF SETTINGS > START RF PAIRING.
2. Activate the menu.

   Press the operating button for 5 seconds ([5-second-press]).

3. Confirm the menu selection to start RF pairing.

   Perform three consecutive presses of the operating button ([triple-press]). This is followed by the CO₂ symbol, a plus sign, and three green stars ([green-star] [green-star] [green-star]), indicating the initiation of pairing.

4. Select the type of RF Pairing.

   Perform a single press of the operating button ([single-press]). Choose one of the following options:

   1. Generate a new ventilation unit address (indicated by [single-press] and [green-star]).
   2. Connect to an additional ventilation unit (indicated by [triple-press] and [green-star]).
   3. Standard pairing mode (indicated by [single-press] and [green-star]).

5. Confirm the selected pairing.

   Press the operating button for 5 seconds ([5-second-press]). The duration of this process is about 1 minute. The display will show sequences of LED indicators. Following this, three green stars ([green-star] [green-star] [green-star]) indicate successful pairing, while three red crosses ([red-cross] [red-cross] [red-cross]) indicate failure.

6. Repeat the pairing procedure for the next CO₂ Sensor.

   Start again at step 1.

6. Status Display

Figure 6.1 - Front of the CO₂ Sensor

Description of the sensor front (same as Figure 4.1): A rectangular device with rounded corners. On the front face, there are indicators and controls. The legend identifies the following components: 1. Top LED 2. Middle LED 3. Bottom LED 4. Operating button (circular) 5. CO₂ LED (green, circular indicator).

Manual Positions (Operating Button)

• Manual position 1 (low): [single-press] (1x)
• Manual position 2 (normal): [triple-press] (3x)
• Manual position 3 (high): [triple-press] (3x) + [green-star]

7. Advice for Manual Ventilation Modes

The CO₂ Sensor is intended for automatic ventilation. If installed correctly, it will provide sufficient ventilation in the room where it is installed. In certain cases, it is recommended to select a manual ventilation mode:

• Manual mode 2 (normal): for a few people in a living room without a CO₂ Sensor.
• Manual mode 3 (high): for many people in rooms without a CO₂ sensor.

8. Setting the Ventilation Mode

1. Select the manual ventilation mode.

   Perform a single press ([single-press]) of the operating button.

2. Repeat step 1 for the desired ventilation mode.

   The available modes are:

   • Mode 1 Low: Indicated by [single-press] (1x) and [green-star].
   • Mode 2 Normal: Indicated by [triple-press] (3x) and [green-star].
   • Mode 3 High: Indicated by [triple-press] (3x) and two [green-star]s.
   • Ventilation based on CO₂ value: Indicated by three LED indicators (circles).
   After a maximum of 12 hours, the system automatically returns to control based on the measured CO₂ values.

9. LED Brightness Setting

1. Activate the menu.

   Perform a 5-second press ([5-second-press]), followed by three green stars ([green-star] [green-star] [green-star]) and a 30-second wait. Then, a sequence involving the CO₂ symbol, a red star ([red-star]), a slash ([slash]), another red star ([red-star]), and the text 'RF 0-10V' indicates navigation to the brightness setting.

2. Select the brightness menu.

   Perform a single press ([single-press]). Options shown are [red-star], [slash], [red-star].

3. Open the brightness menu.

   Perform a 5-second press ([5-second-press]), followed by three green stars ([green-star] [green-star] [green-star]).

4. Select the desired brightness.

   Perform a single press ([single-press]). The options are:

   • (4x) Bright to dim
   • (1x) CO₂ warnings only
   • (1x) Off

5. Repeat step 4 for the desired brightness.
6. Confirm your choice.

   Perform a 5-second press ([5-second-press]), followed by three green stars ([green-star] [green-star] [green-star]).

FCC Compliance Information

[alert] 925 MHz operational frequency.

[alert] FOR USE IN ITU REGION 2 ONLY (Americas)

This device complies with Part 15 of FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

Supplier's Declaration of Conformity 47 CFR § 2.1077 Compliance Information

CO₂ Sensor RF67
Zehnder America
6 Merrill Industrial Drive, Suite 7
Hampton, NH 03842 USA
603 601 8544 www.zehnderamerica.com

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.