Zehnder Rittling ComfoAir 70 Operating And Installation Instructions
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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 Operating and installation instructions for user and installer...
- Page 2 Legal regulations All rights reserved. This 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.
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Page 3: Table Of Contents
Qualified personnel ........................5 Standard operation of the unit ....................5 Introduction and safety ......................5 Proper use ..........................5 ComfoAir 70 ventilation unit ..................... 5 Control panels .......................... 5 Safety ............................6 Safety regulations ........................6 Installation conditions ....................... 6 Symbols used ........................... - Page 4 Parameterizable operating modes ..................28 3.2.6.1 Configuration of Automatic operating mode ................28 3.2.6.2 Configuration of the boost ventilation mode ................28 3.2.6.3 Configuration of the Away mode .................... 28 Installing the exterior wall panel ..................... 28 Maintenance and repair by the qualified personnel ............... 30 Inspection and cleaning of enthalpy exchanger ..............
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Page 5: Preface
Introduction and safety 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 6: Safety
Safety Always observe the safety regulations and installation conditions in the current operating manual. Failure to observe the safety regulations, installation conditions, instructions, warnings, and comments in this document can result in personal injury or damage to the unit. Safety regulations •... -
Page 7: Liability
Every other use is deemed as "improper use", and can lead to damaging the ComfoAir 70, or to personal injury, for which the manufacturer cannot be held liable. The manufacturer shall not be liable for any kind of damage that can be attributed to the following causes: •... -
Page 8: Type Label
Frost protection The ComfoAir 70 is equipped with an automatic frost protection control system, which prevents ice from forming in the heat exchanger at very low outdoor air temperatures. If needed, the frost protection mode is activated both in the four manual... -
Page 9: Frost Protection Mode
The control panels have touch-sensitive buttons, which means the respective operating functions are triggered by touching the relevant buttons. The ComfoAir 70 can be operated at the same time with the internal and the external control panel. The button assignments and the LED signalling in both control panels are identical in terms of functions. -
Page 10: Operating Functions And Signalling From The Control Panel
Operating functions and signalling from the control panel Icon Description Explanation Fan speed The selection for the current fan speed (in total 4 fan speeds with preset operating mode speeds for each fan) is made by using the (-) / (+) buttons. Touching the (+) button sets the next higher fan speed and touching the (-) button sets the next lower fan speed. - Page 11 Boost ventilation The boost ventilation function as temporarily activated fan mode speed 4 can only be activated with a configured DIP switch setting After the boost ventilation time has elapsed, the unit will be transferred to the most recently selected fan speed. The fan speed that was active for longer than 10 s is deemed as the last fan speed.
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Page 12: Automatic Operating Mode
The application of the Automatic function follows the logic of a demand controlled system for optimizing the indoor air quality. Consequently, an optimized response is achieved and mildew formation is prevented, which ultimately also leads to an increase in energy savings. The ComfoAir 70 ventilation unit with a sensor module is classified in energy efficiency class A. -
Page 13: Functional Principle Of Humidity Sensor
2.3.1.1 Functional principle of HUMIDITY sensor The HUMIDITY sensor module is primarily supposed to be installed in units for the ventilation of rooms with an increased occurrence of humidity. The HUMIDITY sensor module is equipped with a humidity and temperature sensor and calculates the relative humidity. In the evaluation of the current sensor signal for the setpoint selection, the fans are regulated in accordance with the characteristic curve in diagram 1. -
Page 14: Replacing The Unit Filters
Standby operating mode. In ComfoAir 70, two high-quality original filters of the class G4 are installed by default. Retrofitting a pollen filter of the class F7 is possible. This is inserted into the lower filter compartment (outdoor air filter). The filters in the ComfoAir 70 must be checked in accordance with the relevant notification on the control panel and, if needed must be replaced. -
Page 15: Resetting The Filter Runtime
What should I do in case of a malfunction? Contact the installation technician in case of a malfunction. Note down the type of your ComfoAir 70; for more on this, see the type label underneath the design cover of the unit. -
Page 16: Disposal
Disposal Discuss with your supplier what you should do with your ComfoAir 70 at the end of its life cycle. If you cannot return your ComfoAir 70, do not deposit it in the normal household waste, but rather contact your local authority for options to recycle components or to process materials in an environmentally-friendly way. -
Page 17: Installation Preparations
It must be adjusted flush with the level of the finished wall construction. The installation of the ComfoAir 70 is only allowed in connection with the round wall mounting pipe or with the square wall mounting pipe! The square wall mounting pipe, intended in particular for new buildings, should be integrated in the outside wall construction in the course of the wall construction. - Page 18 Adjoining room connection from behind: • Recommendation: Use the "90/75 to flat 51 adapter" and route the duct into the insulation layer of the outside wall insulation. Restrictions when installing the flat 51 flat duct on the inner wall! When using the adapter "90 to flat 51 / bend 90° adapter" (item number 990 322 046), the connecting flat51 flat duct must be routed in a downward direction, and then only using a 90°...
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Page 19: Installing The Ventilation Unit
Check in advance the required carrying capacity of the respective mounting surface (dead weight of the ComfoAir 70 is 22 kg) and the secure mounting option using wall plugs and screws of sufficient length. The supplied mounting material should only be considered as a suggestion. - Page 20 Lift the lower outer cover slightly, and pull the ribbon cable on the inner side of the design cover, gripping the red plug, carefully off the board of the internal control panel. Remove the wall bracket from the EPP housing so that the unit is now available with no housing components. Drill the four holes in accordance with the mounting template for fixing the wall bracket, and insert the supplied, or, depending on the wall construction, relevant mounting material (wall plugs) into the holes.
- Page 21 The cut must be performed all around, perpendicular to the axis of the EPP pipe extension! As shown below, push the ventilation unit, with a clearance up to approx. 15 cm to the wall bracket, into the wall mounting pipe so that the control board still remains freely available. In order to make it easier to insert the ventilation unit, you should deburr the cutting edge of the EPP pipe, and spry some silicone spray into the wall mounting pipe! Before you push the ventilation unit in completely, the power supply 3.2.5.1, internal control panel 3.2.5.3, and,...
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Page 22: Electrical Connections
Take care to ensure that the EPP housing rests on the wall bracket with the lower side. If necessary, push the upper frame of the wall bracket slightly upwards. In the end position, the front side of the EPP housing has to line up with the front edge of the wall bracket, or stand back somewhat behind it;... - Page 23 On-site, a disconnection system has to be installed using a contact opening width in accordance with the conditions from overvoltage category III for complete disconnection in the fixed electrical installation, in accordance with the installation regulations. Guide the mains supply line and the power supply unit's primary-side power cable into the connection socket. In accordance with protection class II (protective insulation), the wires for the mains supply line and the wires for the primary-side power cable of the power supply unit must be installed into the connection socket with double insulation through the cable bushings!
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Page 24: Connecting The External Control Panel
Connect the wires of the secondary-side low-voltage cable of the power supply unit to the 24 V X6 terminal on the control board. Watch out for the secondary-side, polarity-dependent terminal assignment! Colour coding Low-voltage cable Clamping point for 24 V X6 power supply unit terminal black... -
Page 25: Connecting The Cable On The External Control Panel
Note down the colour of the wires in accordance with the assignment of the clamping points. This assignment for the colour coding must match up with the assignment of the clamping points on the external control panel! Enter the colour coding in the table below in order to have the assignment available so that it can be reproduced when the external control panel is removed. -
Page 26: Connecting The Internal Control Panel
3.2.5.3 Connecting the internal control panel The internal control panel must be connected to the control board using the ribbon cable. Firstly, plug the connector for the one cable end (in the position shown) into the designated X9 socket on the control board. - Page 27 Clamp the sensor module into the fixation recess of the EPP housing, bearing in mind the cable routing. Put the upper EPP housing section onto the lower EPP housing. Install the sensor cable at the behind and side in the designated cable recess on the EPP housing sections so that the cable ends in the vicinity of the control board. Connect the cable to the clamping point SENSOR X8 on the control board.
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Page 28: Parameterizable Operating Modes
The four-pin DIP switch MODE SW1 is used for the configuration of the Automatic function for the respective sensor module. If necessary, correct the positions of the DIP switches in accordance with designated functional principle of the Automatic mode. Fig. Position of DIP switch, factory setting Parameterizable operating modes 3.2.6.1 Configuration of Automatic operating mode... - Page 29 The exterior wall panel should not be installed until the façade is completed, however, immediately following installation of the ventilation unit! Check the flatness between the wall mounting pipe, the EPP pipe housing, and the façade surface! Proceed as follows for the installation of the exterior wall panel: Remove the top cover from the exterior wall panel.
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Page 30: Maintenance And Repair By The Qualified Personnel
Prior to intervening on the unit, make sure that there is no power in the mains supply line! Routine maintenance of the ComfoAir 70 is easy to carry out and should be performed regularly to keep the unit operating hygienically flawlessly. Only a maintenance interval of 2 years must be adhered to when the filter is changed on a regular basis and if our original filters are used. - Page 31 Remove the upper design cover. Undo the right-hand fastening screw for the lower design cover, and pivot it to the left. Pull the unit carefully out of the wall mounting pipe until the rear side of the upper EPP housing is in front of the top edge of the wall bracket.
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Page 32: Replacing The Fans
(www.paul-waermetauscher.de). Following the inspection, install all parts in the reverse order. After completing the maintenance work, all disconnected ventilation tubes must be connected up air-tight to the ComfoAir 70 again. Restore the power supply. Replacing the fans To change the fans, the unit must be completely pulled out of the wall. In doing so, proceed as follows: Disconnect the CA 70 from the supply voltage. -
Page 33: Visualization Of Fault Notifications
(see 3.5.4) when installing. Install all parts in reverse order after exchanging the control board. After completing the maintenance work, all disconnected ventilation tubes must be connected up air-tight to the ComfoAir 70 again. Restore the power supply. Visualization of fault notifications The unit control system is equipped with an internal system for recognizing faults. -
Page 34: Pressure Loss-Volume Flow-Characteristic Curves For Design Of Adjoining Room Connection
Sound data housing emission Sound pressure level L in [dB(A)], free-field conditions with 3 m clearance Fan speed Standard 1 adjoining room 2 adjoining room on the outside connection connections 11,0 13,9 23,6 16,3 16,0 25,0 29,4 24,3 16,2 34,6 36,4 31,2 22,7... -
Page 35: Dimensions
Dimensions EXHAUST AIR OUTDOOR AIR EXTRACT AIR SUPPLY AIR 275-600... -
Page 36: Mounting Template (Figure Not True To Scale)
Mounting template (figure not true to scale) -
Page 37: Terminal Scheme
Terminal scheme... -
Page 38: Appendices
Appendices Checklist A Maintenance work for users Maintenance work Enter date in quarter 1. Change both filters in the HR unit (filter replacement cycle 90 days) Quarter Year 20... 20... 20... 20... 20... 20... 20... 20... 20... 20... 2. Extract air supplementary filter / clean the filters in exhaust air valves (filter replacement cycle approx. 2 months) Quarter Year 20... -
Page 39: Checklist B Maintenance Work For Qualified Personnel
Checklist B Maintenance work for qualified personnel Maintenance work Enter result − The listed maintenance work must be carried out in accordance with the components actually available. − Inspection of ventilation system in accordance with DIN 1946-6 Appendix E (normative) and Appendix F (informative) −... -
Page 40: Commissioning And Handover Protocol
Commissioning and handover protocol Customer data Name: First name: Tel.: Street: Zip code: City: Construction project: Unit type: Serial no.: Year of construction: Completeness Components Version Result - Design as planned yes / no Supply air duct - Cleaning option provided yes / no - Arrangement as planned yes / no... -
Page 41: Air Volume Protocol
Air volume protocol Customer data Name: First name: Tel.: Street: Zip code: City: Construction project: Unit type: Serial no.: Year of construction: Measurement data Measuring instrument used: Faults during measurement: Indoor temperature: Outdoor temperature: Filter status when measuring Outdoor Extract Building moisture status:... -
Page 42: Product Data Sheet
Product data sheet... -
Page 44: Product Label
Product label Produced for the ComfoAir 70 the product labels of various energy labels are in accordance with the ErP directive, depending on the application of the unit. The product label applicable for the ventilation system is based on the installation of the system and the model identifier from the product data sheet. -
Page 45: Conformity
Product designation: Decentralized heat recovery unit ComfoAir 70 series Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within... -
Page 46: Eac Certificate Of The Eurasian Economic Union
EAC certificate of the Eurasian Economic Union listed below. Product designation: Decentralized heat recovery uni ComfoAir 70 series Signed for and on behalf of: Reinsdorf, 12/09/2017... - Page 47 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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