REMKO KWK Series Operating And Installation Instructions
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REMKO KWK Series Operating And Installation Instructions

Cold water wall and ceiling units
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Operating and
installation instructions
REMKO KWK series (DM)
Cold water wall and ceiling units
KWK 135 EC (DM), KWK 175 EC (DM), KWK 225 EC (DM), KWK 265 EC (DM),
KWK 345 EC (DM), KWK 395 EC (DM), KWK 525 EC (DM), KWK 605 EC (DM),
KWK 735 EC (DM), KWK 875 EC (DM)
0258-2020-02 Edition 1, en_GB
Read the instructions prior to performing any task!

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  • Page 1 Operating and installation instructions REMKO KWK series (DM) Cold water wall and ceiling units KWK 135 EC (DM), KWK 175 EC (DM), KWK 225 EC (DM), KWK 265 EC (DM), KWK 345 EC (DM), KWK 395 EC (DM), KWK 525 EC (DM), KWK 605 EC (DM),...
  • Page 2 Read these operating instructions carefully before commis- sioning / using this device! These instructions are an integral part of the system and must always be kept near or on the device. Subject to modifications; No liability accepted for errors or mis- prints! Translation of the original...

  • Page 3: Table Of Contents

    Table of contents Safety and usage instructions......................4 1.1 General safety notes........................4 1.2 Identification of notes........................4 1.3 Personnel qualifications........................4 1.4 Dangers of failure to observe the safety notes................4 1.5 Safety-conscious working....................... 4 1.6 Safety notes for the operator......................5 1.7 Safety notes for installation, maintenance and inspection..............

  • Page 4: Safety And Usage Instructions

    REMKO KWK series (DM) Safety and usage instructions CAUTION! This combination of symbol and signal word 1.1 General safety notes warns of a potentially hazardous situation, which if not avoided may cause injury or mate- Carefully read the operating manual before com- rial and environmental damage.

  • Page 5: Safety Notes For The Operator

    "certificate of warranty" to conditions stipulated in this manual and comply REMKO GmbH & Co. KG at the time when the with all applicable regional regulations. units are purchased and commissioned.

  • Page 6: Transport And Packaging

    REMKO KWK series (DM) 1.11 Transport and packaging The devices are supplied in a sturdy shipping con- tainer. Please check the equipment immediately upon delivery and note any damage or missing parts on the delivery and inform the shipper and your contractual partner.

  • Page 7: Technical Data

    Technical data 2.1 Unit data KWK 135-265 EC (DM) KWK 135 KWK 175 KWK 225 KWK 265 Series (DM) (DM) (DM) (DM) Chilled water units for wall and ceiling mounting, Operating mode 2-conductor version Nominal cooling output 1.31 1.75 2.18 2.60 1.63 2.06...
  • Page 8 REMKO KWK series (DM) KWK 135 KWK 175 KWK 225 KWK 265 Series (DM) (DM) (DM) (DM) Operating weight, approx. 14.5 (15.7) 15.0 (16.2) 17.7 (19.3) 18.5 (20.1) Standard colour similar to RAL 9016 1972... 1973... 1974... 1975... Serial number (1982...)

  • Page 9: Unit Data Kwk 345-525 Ec (Dm)

    2.2 Unit data KWK 345-525 EC (DM) KWK 345 KWK 395 KWK 525 Series (DM) (DM) (DM) Chilled water units for wall and ceiling Operating mode mounting, 2-conductor version Nominal cooling output 3.43 3.89 5.22 3.81 5.69 Nominal heat capacity Application area (room volume), approx.
  • Page 10 REMKO KWK series (DM) KWK 345 KWK 395 KWK 525 Series (DM) (DM) (DM) 1976... 1977... 1978... Serial number (1986...) (1987...) (1988...) 1664440 1664450 1664460 EDP no. (1664540) (1664550) (1664560) Air inlet temperature TK 27 °C / FK 19 °C, medium inlet 7 ℃, medium outlet 12 °C, 0% glycol concentra- tion, max.

  • Page 11: Unit Data Kwk 605-875 Ec (Dm)

    2.3 Unit data KWK 605-875 EC (DM) KWK 605 KWK 735 KWK 875 Series (DM) (DM) (DM) Chilled water units for wall and ceiling Operating mode mounting, 2-conductor version Nominal cooling output 6.06 7.34 8.78 6.44 7.76 9.16 Nominal heat capacity Application area (room volume), approx.
  • Page 12 REMKO KWK series (DM) KWK 605 KWK 735 KWK 875 Series (DM) (DM) (DM) 1979... 1970... 1981... Serial number (1989...) (1990...) (1991...) 1664470 1664480 1664490 EDP no. (1664570) (1664580) (1664590) Air inlet temperature TK 27 °C / FK 19 °C, medium inlet 7 ℃, medium outlet 12 °C, 0% glycol concentra- tion, max.

  • Page 13: Unit Dimensions

    2.4 Unit dimensions Dimensions KWK 135 EC - KWK 875 EC 142,5 102,5 107,5 Fig. 1: Unit dimensions (all measurements in mm) Dimen- sion 135 EC 175 EC 225 EC 265 EC 345 EC 395 EC 525 EC 605 EC 735 EC 875 EC 1070...
  • Page 14 REMKO KWK series (DM) Dimensions KWK 135 EC (DM) - KWK 875 EC (DM) 142,5 102,5 Fig. 2: Unit dimensions (all measurements in mm) 135 EC 175 EC 225 EC 265 EC 345 EC 395 EC 525 EC 605 EC...

  • Page 15: Design And Function

    Design and function 3.1 Unit description In cooling mode the unit (chilled water outlet) extracts the heat from the interior room to be cooled into the fin register and passes it on to the cold operating medium - water or a mix of water and glycol - within a closed medium cycle.

  • Page 16: System Layout

    REMKO KWK series (DM) 3.2 System layout The unit is designed for a 2-conductor system. The unit can easily be upgraded to a 4-conductor system using a heating coil available as an accessory. The 2-conductor system has 2 medium pipes (conductors: supply and return flow) for cooling using a cold medium and 2 medium pipes for heating using a warm medium.
  • Page 17 With 4-conductor systems, which are used for cooling and heating, in one system, both cooling capacity from a chiller and heating capacity from a separate heating system on the indoor units in an another system are simultaneously present. Fig. 6: Example of system layout of 4-conductor system (cold water air conditioning system) Outdoor area Medium piping cooling mode B1-3: Indoor area 1, 2, 3...

  • Page 18: Operation

    REMKO KWK series (DM) Operation The unit can be easily operated with the room tem- perature controller available as an accessory or regulation to be provided by the customer. It is also possible to activate the system using a building management system.

  • Page 19: Installation Instructions For Qualified Personnel

    Installation instructions Selecting the installation location for qualified personnel Wall / ceiling unit The indoor unit is designed for vertical wall installa- Important notes prior to installation tion, for instance underneath windows. However, it Observe the operating manuals for the indoor unit can also be used in the upper wall area (max.
  • Page 20 REMKO KWK series (DM) Minimum clearances Pull the heat exchanger out of the unit's Observe the minimum clearances to allow access mounting. Be careful as it is easy to be cut by for maintenance and repair work and facilitate the fins. Do not bend any fins and do not optimum air distribution.
  • Page 21 Installation examples KWK 135 EC - KWK 875 Installation examples KWK 135 EC - KWK 875 EC DM A: Basic unit B: with plinth C: with air inlet plinth A: Basic unit B: with plinth C: with air inlet plinth...

  • Page 22: Installation

    REMKO KWK series (DM) Installation Selecting the hydraulic connection 2-conductor cooling system 6.1 Unit installation Wall installation without valve assembly: Wall installation KWK EC when the fan is switched off the flow of air from the air inlet can be ignored without sacrificing comfort.
  • Page 23 Necessary system components Diaphragm expansion vessel (MAG) Valve assembly for 2 or 4-conductor systems To avoid pressure fluctuations during standstill (accessory) because of temperature changes, diaphragm expansion vessels filled with nitrogen (moisture In 2 or 4-conductor systems, cold or warm medium neutral) must be integrated in the system.
  • Page 24 REMKO KWK series (DM) The room temperature controller operates the unit. The controller can be wall-mounted or installed in the unit, as required. Follow the separate installation instructions. Switch relay for 4 units If several units are to be controlled together in a group, a switch relay is necessary if room temperature regulation is used.

  • Page 25: Condensate Drainage Connection

    6.2 Condensate drainage connection If the temperature falls below the dew point, con- densate will form on the cooling fins during cooling mode. Below the heat exchanger is a collection tray which must be connected to a drain. The condensate drainage line should have an incline of min.

  • Page 26: Electrical Wiring

    REMKO KWK series (DM) Electrical wiring General connection and safety instructions DANGER! All electrical installation work is to be performed by specialist companies. Disconnect the power supply when connecting the electrical terminals. We recommend installing a main / repair switch on the building close to the indoor unit.

  • Page 27: Before Commissioning

    Before commissioning Commissioning Anti-freeze protection for the medium NOTICE! If a water-glycol mixture is used, it is to be pre- mixed before being put in the system. The desired Commissioning should only be performed by concentration is then to be checked. specially trained personnel and documented after the certificate has been issued.

  • Page 28: Shutdown

    Ensure that units and components are disposed of in accordance with local regulations, e.g. through authorised disposal and recycling specialists or at collection points. REMKO GmbH & Co. KG or your contractual partner will be pleased to provide a list of certified firms in your area.

  • Page 29: Troubleshooting And Customer Service

    Troubleshooting and customer service The unit and components are manufactured using state-of-the-art production methods and tested several times to verify that they function correctly. However, if malfunctions should occur, please check the functions as detailed in the list below. For systems with an indoor unit and outdoor unit, refer to the chapter "Trouble- shooting and customer service"...
  • Page 30 REMKO KWK series (DM) Operational malfunctions (continued) Malfunction Possible causes Checks Remedial measures Drainage pipe on collection Can the condensate drain Clean the drainage pipe container clogged/damaged off without any obstruction? and collection container Insulation missing from Do all the medium-carrying...

  • Page 31: Care And Maintenance

    Care and maintenance Maintenance It is recommended that you take out a mainte- Regular care and observation of some basic points nance contract with an annual service from an will ensure trouble-free operation and a long appropriate specialist firm. service life. DANGER! This enables you to ensure the operational reli- Prior to performing any work, ensure the equip-...
  • Page 32 REMKO KWK series (DM) Air filter for indoor unit Clean the air filter at intervals of no more than 2 weeks. Reduce this interval if the air is especially dirty. Fig. 19: Cleaning with a vacuum cleaner Fig. 18: Filter removal Cleaning the filter Disconnect the power supply to the unit.
  • Page 33 Removing the unit cover on the KWK (DM) The cover can be removed to clean the fan. Pro- ceed as follows: Disconnect the power supply to the unit. Loosen the screws on the cover [1]. Remove the cover from the unit. Clean the filter / fan as described above and re-assemble the unit in reverse order.

  • Page 34: General View Of Unit And Spare Parts

    REMKO KWK series (DM) General view of unit and spare parts 13.1 Exploded view of the unit KWK 135 EC - KWK 875 EC Fig. 22: Exploded view of the unit We reserve the right to modify the dimensions and design as part of the ongoing technical development...

  • Page 35: Spare Parts List Kwk 135 Ec - Kwk 875 Ec

    13.2 Spare parts list KWK 135 EC - KWK 875 EC IMPORTANT! To ensure the correct delivery of spare parts, please always the device type with the corresponding serial number (see type plate) No. Designation Air filter Valve unit incl. control board Heat exchanger Transformer Condensate connection...

  • Page 36: Exploded View Of The Unit Kwk 135 Ec - Kwk 875 Ec Dm

    REMKO KWK series (DM) 13.3 Exploded view of the unit KWK 135 EC - KWK 875 EC DM Fig. 23: Exploded view of the unit We reserve the right to modify the dimensions and design as part of the ongoing technical development...

  • Page 37: Spare Parts List Kwk 135 Ec - Kwk 875 Ec Dm

    13.4 Spare parts list KWK 135 EC - KWK 875 EC DM IMPORTANT! To ensure the correct delivery of spare parts, please always the device type with the corresponding serial number (see type plate) No. Designation Air filter Valve unit incl. control board Heat exchanger Transformer Condensate tray...

  • Page 38: Index

    REMKO KWK series (DM) Index Care and maintenance ....31 Ordering spare parts ....35, 37 Cleaning Air-side components .
  • Page 40 REMKO QUALITY WITH SYSTEMS Air-Conditioning | Heating | New Energies Telephone +49 (0) 5232 606-0 REMKO GmbH & Co. KG Hotline within Germany +49 (0) 5232 606-0 Klima- und Wärmetechnik Telefax +49 (0) 5232 606-260 Im Seelenkamp 12 E-mail info@remko.de...

This manual is also suitable for:

Kwk dm seriesKwk 175 ec dmKwk 225 ecKwk 225 ec dmKwk 135 ec dmKwk 135 ec ... Show all

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