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Summary of Contents for REMKO LWM Series
- Page 1 Operating and installation instructions REMKO LWM series Smart heat pumps Air/water system for heating or cooling LWM IM 300 Instructions for Technicians 0259-2020-03 Edition 1, en_GB Read the instructions prior to performing any task!
- Page 2 Read these operating instructions carefully before commis- sioning / using this device! These instructions are an integral part of the system and must R410A always be kept near or on the device. Subject to modifications; No liability accepted for errors or mis- Refrigerant prints! Translation of the original...
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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 LWM series 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 with all applicable regional regulations. REMKO GmbH & Co. KG at the time when the Local regulations and laws such as Water units are purchased and commissioned. -
Page 6: Transport And Packaging
REMKO LWM series 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. For later complaints can not be guaranteed. -
Page 7: Technical Data
Technical data 2.1 Unit data Series LWM IM 300 Drinking water volume Heat exchanger surface Heat exchanger contents 19.4 Storage tank volume Max. operating pressure Power supply V/Ph/Hz 230/1~/50 Max. permissible operating temperature °C Max. drawing quantity when drawing continuously at 45 °C l/min kWh/d Standby energy Consumption value... - Page 8 REMKO LWM series Throughput of storage tank Throughputs Storage tank for preparation for domestic water Inlet temperature °C Hot water temperature °C Cold water temperature °C Heating cycle flow rate 1200 1800 2400 Throughput 16.8 25.3 30.1 33.2 Throughputs Storage tank for preparation for domestic water Inlet temperature °C...
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Page 9: Unit Dimensions
2.2 Unit dimensions Dimensions indoor unit 1420 Fig. 1: Indoor unit dimensions (all dimensions in mm) - Page 10 REMKO LWM series Pipe connection arrangement Fig. 2: Pipe connection arrangement (all dimensions in mm) Designations of the pipe connections Fig. 3: Designations of the pipe connections 1: Circulation 1" union nut (flat-sealing) 5: Heating inlet flow 1 " AG 2: Hot water 1"...
- Page 11 Dimensions of storage tank R1562 Fig. 4: Storage tank unit dimensions (all measurements in mm) 1: Magnesium anode A: Hot water 2: PU insulation B: Inlet 3: Adjustable feet C: Circulation 4: Probe connection 1/2” D: Return flow 5: Flange E: Cold water 6: Tilt height Dimensions without the adjustable feet supplied as standard!
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Page 12: Unit Description
WARNING! Monoenergetic operation can be realised through Only fasteners suitable for the given application the REMKO Smart-Serv. All connections are to be may be used. established on the top of the unit. The storage tank’s domestic hot-water heating... - Page 13 Assembly Minimum spacing for indoor unit Check the contents of the packaging for com- pleteness and check the unit for visible trans- port damage. Immediately notify your contract partner of any deficiencies. The storage tank may not be transported with the fine-tube heat exchanger installed.
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Page 14: Hydraulic Connection
REMKO LWM series Hydraulic connection One or, where necessary, several expansion vessels must be designed for the entire hydraulic system. The system pressure of the entire pipe network is to be matched to the hydraulic system and A separate interpretation of nominal flow rate... - Page 15 Hydraulic connection - Layout LWM outdoor unit return flow (water inlet) Cold water connection LWM outdoor unit inlet (water inlet) Bypass valve Heating circuit inlet (water inlet) Changeover valve Heating circuit return flow (water inlet) Circulation Hot water connection 10: Dirt trap...
- Page 16 There is a pressure drop present on site (see technical data). If the pressure losses on site exceed this, a separate storage tank, e.g. REMKO KPS, must be used as a hydraulic compensator. Then a REMKO heating cycle group unmixed, type HGU, and two mixed heating cycle groups, type HGM, are available.
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Page 17: Installation
Installation Domestic hot water-side connection (pressure- tight) General notes Hot water heaters are pressure-tight storage tanks with which pressure-tight connections can be established. If the line pressure is higher than the NOTICE! permissible operating pressure, a pressure reducing valve provided by the customer must be Preparation of the hot water must be in compli- installed in the cold water supply. - Page 18 REMKO LWM series S 08 Fig. 8: Tank connection according to DIN 1988 1: Shut-off valve 8: Through-flow diaphragm expansion vessel (rec- 2: Pressure reducer ommended if pressure fluctuations are antici- 3: Test device pated on the domestic connection side)
- Page 19 The return flow valve prevents the return flow of Storage tanks with registers the hot water into the cold water network during a The register (heat exchanger) built into the storage pressure drop in the line and thereby protects the tank is suitable for connecting to a water heater at storage tank heating up without water.
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Page 20: Corrosion Protection
REMKO LWM series Corrosion protection Scope of application of VDI 2035: Domestic hot-water heating systems as per Oxygen always plays a role if metal materials in a DIN 4753 (sheet 1 only) heating system corrode. The pH value and the salt Water heating systems as per DIN EN 12828 content also play a major role. - Page 21 NOTICE! Heat pump systems and components from REMKO must be filled and operated with deionised water (completely desalinated). We also recommend the use of the complete heating protection unit available from us. Full protection with glycol should be used in cooling systems. The system water should be tested each time the plant is serviced, but at least once a year.
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Page 22: Emergency-Heat Operation
If the outdoor unit fails, you can start emer- media: gency-heat operation as follows: Pure, low viscosity, non-aggressive and non- Pressing the REMKO logo in the top right explosive media without solid or long-fibre corner of the display takes you to the components "Expert”... -
Page 23: Electrical Wiring
Electrical wiring 9.1 Electrical connection - indoor unit NOTICE! The following instructions describe the electrical It is necessary to provide a separate RCD 100 connection of the inner module. mA, type B (universal current-sensitive) with a contact load of 40 A for the heat pump. Remove the cover from the indoor unit by pressing it upwards and pulling it forwards out of the rear groove. -
Page 24: Overview Of Electrical Connecting Lines
REMKO LWM series 9.2 Overview of electrical connecting lines Fig. 12: Overview of electrical connecting lines A: Heat pump LWM 5: Modbus communication B: Heat pump LWM IM 300 e.g. 3 x 1.0 mm sheathed C: Sub-distribution (provided by the customer) -
Page 25: Electrical Configuration - I/O Module
9.3 Electrical configuration - I/O module Use wire gauge corresponding with the connection cable supplied! Lay load lines separately to measuring lines! NOTE: without blocking contactor, jumper must be inserted, closed = enabled 2nd mixed heating cycle Potential-free Power utility contact Mixer 230 V A34 General alarm signal... -
Page 26: Terminal Assignment / Legend
REMKO LWM series 9.4 Terminal assignment / legend Terminal assignment Designat. Input Output Signal Description Power supply I/O 230V Power supply primary pump, indoor unit Solar probe collector PT 1000 Solar probe storage tank bottom PT 1000 Solar probe inlet heat meter Solar PT 1000 Solar probe return flow heat meter Solar PT 1000 Circ. - Page 27 Designat. Input Output Signal Description Changeover valve 2nd heat generator Not connected 2nd mixed heating cycle pump (230 V) switched Changeover valve / pump cooling (230 V) switched 1st mixed heating cycle 'Open’ 1st mixed heating cycle 'Closed' Bypass mixer 'Open' Bypass mixer 'Closed' 2nd mixed heating cycle 'Open' 2nd mixed heating cycle 'Closed’...
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Page 28: Before Commissioning
The Smart Control is used to operate and control accordance with VDI 2035. We recommend the the entire heating system. The Smart Control is addition of REMKO full heating protection (see operated via the touch display. Ä Chapter 7 ‘Corrosion protection’... - Page 29 Function display Check all connections, even those which were sealed at the factory (flange, anode The REMKO Smart Control Touch regulation is an sleeve), for leak-tightness. operating module with touch display. Unit operation is intuitive and self-explanatory via the plain text Then check all pipes for any leaks and, if display on the user interface of the controller.
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Page 30: Care And Maintenance
REMKO LWM series Care and maintenance In hard water areas, the limescale which forms inside the storage tank must be removed by a spe- Only clean the units with a damp cloth. (by cialist after one to two years of operation. Cleaning adding, for instance, a liquid household is performed through the flange opening. -
Page 31: 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 32: Troubleshooting And Customer Service
REMKO LWM series Troubleshooting and customer service 14.1 General troubleshooting The unit has been manufactured using state-of-the-art production methods and has been tested several times to ensure that it works properly. However, in the event that malfunctions should occur, the unit should be checked against the following list. -
Page 33: General View Of Unit And Spare Parts
General view of unit and spare parts 15.1 General view of unit and indoor unit spare parts Fig. 14: Exploded view of indoor unit We reserve the right to modify the dimensions and design as part of the ongoing technical development process. - Page 34 REMKO LWM series Spare parts for indoor unit No. Designation LWM IM 300 EDP no. Cover Upon request Dirt trap 1" 1120013 Drinking water storage tank 300 l 270650 Bypass valve, complete 1120913-2 Smart Control Touch, installed 1121457 Changeover valve...
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Page 35: Storage Tank Spare Parts
15.2 Storage tank spare parts Fig. 15: Storage tank spare parts We reserve the right to modify the dimensions and design as part of the ongoing technical development process Storage tank spare parts list Designation Storage tank EDP no. Fine-tube heat exchanger 260200 Flange heating cartridge 260160... -
Page 36: General Terms
REMKO LWM series General terms Energy supply company switching Certain energy supply companies offer special tar- All-in-one unit iffs for the operation of heat pumps. Design in which all refrigeration components are installed in one housing. No refrigeration work has to be carried out. - Page 37 Limit temperature / bivalence point Seasonal performance factor Outdoor temperature where the secondary heating The seasonal performance factor relates to the appliance cuts in under bivalent operation. ratio of heat content delivered by the heat pump system to the supplied electrical energy in one year.
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Page 38: Index
REMKO LWM series Index Assembly ......12 Pipe connections on indoor unit, arrangement . 10 Pipe outlets on indoor unit, spacing . - 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...
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