Zehnder Rittling ComfoAir 70 User Manual
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Zehnder Rittling ComfoAir 70 User Manual

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Decorative Radiators
Comfortable indoor ventilation
Heating and cooling ceiling systems
Clean air solutions
Zehnder
ComfoAir 70
User manual on operation and installation for operators and installers

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Summary of Contents for Zehnder Rittling ComfoAir 70

  • Page 1 Decorative Radiators Comfortable indoor ventilation Heating and cooling ceiling systems Clean air solutions Zehnder ComfoAir 70 User manual on operation and installation for operators and installers...
  • Page 2 Legal regulations All rights reserved. This user manual has been compiled with the utmost care. Nevertheless, the publisher accepts no liability for damage caused by missing or incorrect details in this manual. We reserve the right at any time and without previous notification to change the content of these instructions in part or as a whole.

  • Page 3: Table Of Contents

    Contents     Foreword and introduction ........................2   Notes on the user manual ........................2     Validity ..............................2     Target groups ............................2     Qualification of target group ........................2     Conformity .............................. 2  ...

  • Page 4: Foreword And Introduction

    The unit type series are hereinafter designated with the common product name, ComfoAir 70. The subject of this user manual is the ComfoAir 70 in series production. Accessories are only described to the extent necessary for appropriate operation of the unit. Please refer to the respective instructions for further information on accessory parts.

  • Page 5: Introduction And Safety

    Introduction and safety This manual contains information that must be observed for your personal safety and in order to prevent personal injury and damage to property. This information is highlighted in the form of warning notes, which are shown below according to the degree of risk.

  • Page 6: Notes On Operation Of The Ventilation Unit

    The external control panel and the connection hub are only suitable for use in indoor areas. Proper use  The ComfoAir 70 is intended for the ventilation of living rooms and spaces with a similar use. Any other use or any use beyond this is considered improper use.

  • Page 7: Storage

    Product description The ComfoAir 70 is built to the current state of the art and the recognized safety regulations. The unit is subject to continuous improvement and development. This is why it is possible for your unit to deviate slightly from the description.

  • Page 8: Overview Of Assemblies

    Frost protection The ComfoAir 70 is equipped with an automatic frost protection function to prevent the thermal exchanger from icing up. In working condition, the control unit acting in frost protection mode is activated when required for the four manual fan speeds as well as in automatic mode.

  • Page 9: Description Of The Operating Functions And Signals

    The two (+) / (-) keys are used for setting the various fan speeds and operating modes. The ventilation stages and the Automatic operating mode are indicated with blue LEDs, and the service information with red LEDs. Filter maintenance Fan speeds Symbol Filter maintenance...
  • Page 10 Icon Description Explanation Fan speed 4 (FS4) Intensive ventilation The ventilation unit runs at maximum ventilation level (60 m³/h). This fan speed is used for a fast air exchange. NOTE Intensive ventilation for a limited period of time can be set with the boost ventilation operating mode.
  • Page 11 Icon Description Explanation The unit can be switched from FS1 to Standby mode by touching the (-) Standby mode button. The fans then come to a stop. NOTE The shutters are closed automatically. Standby mode is excited by touching the (+) button. The unit will start with fan speed 1.

  • Page 12: Options For Ventilation Operation

    Consequently, an optimized response is achieved, and mildew formation is prevented, which ultimately also leads to an increase in energy savings. The ventilation unit of the ComfoAir 70 series with a sensor module is classified in energy efficiency class A.

  • Page 13: Maintenance By The User

    difference between indoor and outdoor air, at a difference of T < 5 K the air volume is reduced to 20 m³/h. When the Bathroom function operating mode is active, the unit will be operated with the highest fan speed if the relative humidity amounts to 80% or more.
  • Page 14 3.3.1.1 Replacing the air filter NOTE The ventilation unit must not be operated without filters. During filter maintenance, the unit needs to be transferred to the Standby operating mode. The ventilation unit is equipped with two air filters of filter class ISO Coarse 70% as standard. Retrofitting with filters of filter class ISO ePM10 80% is possible, preferably the higher quality ePM10 filter is inserted into the lower filter compartment as an outdoor air filter.

  • Page 15: Unit Maintenance

    In the event of a fault message (indicated by the LED fault lighting up continuously), contact customer service. Information about the type of your ComfoAir 70 can be found on the type label, which is located under the design cover of the unit.

  • Page 16: Chapter For Qualified Personnel

    Risk of injury due to falling design cover The ComfoAir 70 is intended exclusively for installation in an external wall, whereby the housing must be positioned vertically on the inside of the wall with the exhaust and supply air grilles at the top.

  • Page 17: Installation Preparations

    270 mm) into the drill hole of the outside wall. NOTE Installation of the ComfoAir 70 requires the use of the round or square wall mounting pipe. Observe the respective enclosed instructions on professional installation when installing the wall mounting pipe.
  • Page 18 Graphics as an example for the connection of a back supply air ventilation tube NOTE When using the joining piece (“Convertor 90 to flat 51, bend 90°”), the connecting 51 flat duct must be routed in a downward direction, and then only using a 90° angle (“Bend flat 51 H”) to the left or to the right. The reason for this is the fixing point of the wall bracket, where the fixing point is not allowed to be located in the vicinity of the flat duct.

  • Page 19: Installing The Ventilation Unit

    NOTE The side connection of the ventilation tubes must be designed so that it can be dismantled for maintenance / repairs, i.e. it must be possible to pull the connection piece out of the cut-out in the upper EPP housing section. Installing the ventilation unit DANGER Fatal voltages...
  • Page 20 3. Remove the wall bracket from the EPP housing so that the unit is now available with no housing components. 4. The length of the EPP pipe housing must correspond to the length of the wall mounting pipe installed in final wall thickness +5 mm.
  • Page 21 9. Push the unit into the wall mounting pipe until it stops against the back of the wall bracket. Make sure that the connection cables are not between the EPP housing and the wall bracket. NOTE In the end position, the front side of the EPP housing has to line up with the front edges of the wall bracket, or at least stand back behind it;...

  • Page 22: Electrical Connections

    Electrical connections DANGER Fatal voltages Only a qualified electrician may carry out the electrical installation. The VDE regulations or the special safety regulations of your country apply to the electrical installation. Observe the five safety rules (DIN VDE 0105-100 when working on electrical systems: ...
  • Page 23 terminal of the PE conductor remains unassigned on the unit side (ventilation unit corresponds with protection class II – protective insulation). 4. Get the clamping connections in the connection socket and close them using the cover. 5. Then insert the complete EPP housing of the ventilation unit into the wall mounting tube up to a distance of approx. 15 cm from the wall bracket so that the control board is still freely accessible.

  • Page 24: Parameterisation Of Boost Ventilation And Absent Operating Modes

    Parameterisation of boost ventilation and absent operating modes As described in “3.1.6 Description of the operating functions and signals”, the boost ventilation and absent operation modes can be adjusted according to user-specific needs. NOTE Parameterisation must be carried out in the accessible status of the control board. Configuration of the boost ventilation mode The temporarily active fan speed 4 operates as the boost ventilation function.
  • Page 25 3. Transfer the centre points of the slotted holes onto the façade. NOTE The partition between the outdoor air and exhaust air guide should be in a horizontal position and also match up with the partition of the EPP pipe housing. 4.

  • Page 26: Commissioning

    Instructions for proper disinfection can be found at www.core.life. In doing so, proceed as follows: 1. Disconnect the ComfoAir 70 from the supply voltage. 2. Remove the upper design cover. Undo the right-hand fastening screw for the lower design cover and pivot it to the left.

  • Page 27: Visualization Of Fault Notifications

    4. Remove the filter cover and the filter out of the upper filter compartment. 5. Remove the upper part of the EPP housing, pulling in an upward direction. The enthalpy exchanger can now be pulled upwards out of the lower part of the EPP housing. 6.

  • Page 28: Technical Specifications

    Technical specifications General specifications Description / Value Heat exchanger type Enthalpy exchanger with polymer membrane Housing / Interior lining Aluminium, powder-coated, free of thermal bridges; interior lining is made of expanded polypropylene (EPP) to provide heat and sound insulation Pipe connections DN 100 (sleeve size) Weight 14 to 16 kg depending on facade finish...

  • Page 29: Dimensions With Optional Radio Module

    Dimensions with optional radio module OUTDOOR AIR EXHAUST AIR EXTRACT AIR SUPPLY AIR SUPPLY AIR EXTRACT AIR Optional air tube connections on the back...

  • Page 30: Terminal Scheme

    Terminal scheme...
  • Page 31 Sales International Zehnder Group Deutschland GmbH Almweg 34 77933 Lahr Deutschland T +49 7821 586-392 F +49 7821 586-406 sales.international@zehndergroup.com www.international.zehnder-systems.com...

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