REMKO EFS Series Operating And Installation Instructions
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- Operating and installation instructions (64 pages) ,
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- Operating and installation instructions (32 pages)
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Summary of Contents for REMKO EFS Series
- Page 1 Operating and installation instructions REMKO EFS series Fresh water station Instructions for users and specialists EFS 21 0321-2022-11 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 always be kept near or on the device. Subject to modifications; No liability accepted for errors or mis- 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 instructions for the operator....................5 1.7 Safety notes for installation and inspection tasks................ -
Page 4: Safety And Usage Instructions
REMKO EFS 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 Instructions For The Operator
1.6 Safety instructions 1.7 Safety notes for installation and for the operator inspection tasks The operational safety of the units and compo- The operator must ensure that all inspection nents is only assured providing they are used as and installation work is carried out by author- intended and in a fully assembled state. -
Page 6: Intended Use
"certificate of warranty" to REMKO GmbH & Co. KG at the time when the units are purchased and commissioned. The warranty conditions are detailed in the "Gen- eral business and delivery conditions". -
Page 7: Technical Data
Technical data 2.1 Unit data Series EFS 21 Nominal power at 10-45/65°C (KW-WW/HVL) Tap capacity at nominal power l/min Min. switch-on flow rate for primary pump l/min at nominal power NL count Power at 10-60/75°C (KW-WW/HVL) 104/194/291/388 Tap capacity at 10-60/75°C (incl. cascades) l/min 30/56/84/112 Capacity at 10-60/75°C, mixed to 45°C DHW... -
Page 8: Unit Dimensions And Space Requirements
REMKO EFS series 2.2 Unit dimensions and space requirements Fig. 1: Unit dimensions 2.3 Pump data Pressure loss characteristic curve Fig. 2: Pressure loss characteristic curve A: Wilo PARA 15/7 B: EFS 21 Specified pressure loss valid for heating (primary) and drinking water side (secondary). - Page 9 PWM logic (PWM 2) Fig. 3: PWM logic < 7 % Pump off 15-95 % Proportional performance range 7-12 % Min. performance (operation) > 95 % Max. power 12-15 % Min. performance (start-up) We reserve the right to make technical changes for the purpose of technical advancement.
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Page 10: Design And Planning
Subject to technical changes! Fig. 4: Fresh water station with optional circulation set and optional return distribution A: Fresh water station 3: Unmixed heating cycle B: REMKO MPS storage tank 4: Mixed heating cycle 1 1: Cold water 5: Mixed heating cycle 2... -
Page 11: Design Of The Storage Tank
3.2 Design of the storage tank You can use the following table to calculate the approximate required volume of the buffer tank. Temperature in buffer tank [°C] HW temperature [°C] set on Reqd. Storage tank volume per controller litre of HW [Litre] Sample calculation for the design of the buffer tank: Temperature of buffer tank: 60 °C, required dispensing medium flow rate at water valve: 20 l/min DHW temperature set on the controller: 45 °C... -
Page 12: Setting The Temperature
REMKO EFS series 3.3 Setting the Temperature Set the required (maximum) domestic hot water temperature on the controller under "Main menu / hot water / target temperature". To ensure that scalding cannot occur at the water valve, the maximum hot water temperature must not exceed 60 °C. -
Page 13: Corrosion Protection
3.4 Corrosion protection To prevent corrosion damage to the plate heat exchanger, the following drinking water values must be observed: Copper soldered < 250 mg/l at 50°C < 100 mg/l at 75°C Chloride (CL-) < 10 mg/l at 90°C Sulphate <... -
Page 14: Calcification Protection
REMKO EFS series 3.5 Calcification protection The precipitation of chalk from the water increases massively at hot water temperatures above 55°C and a water hardness above 8.5°dH. For this reason, the hot water target temperature should be set as low as pos- sible while observing drinking water hygiene and, if necessary, the calcification should be reduced by using a softening or other suitable limescale treatment system. -
Page 15: Assembly
Assembly Storage tank mounting The fresh water station can be installed directly General notes with a REMKO storage tank charging unit or return stratification kit on a REMKO storage tank. The kit includes a mounting template to assist with NOTICE! mounting the fresh water station directly on the storage tank. -
Page 16: Hydraulic Connection
REMKO EFS series Hydraulic connection The illustration below is an example representation with optional accessories (circulation unit). Other avail- able accessories: Cold water connection kit and piping kit. This illustration makes no claim to being complete and is no substitute for professional planning. -
Page 17: Electrical Wiring
Electrical wiring General notes Work on the electrical system and the opening of electrical enclosures may only be carried out in a de-energised state and only by authorised spe- cialist personnel. Ensure correct terminal assign- ment and polarity for the connections. Protect the controller and the electrical components from over- voltage. -
Page 18: Commissioning (Specialist)
REMKO EFS series Commissioning (specialist) 7.1 Leak test and filling of the Fill the drinking water side only with clean drinking water in accordance with DIN 1988 and press the system air out of the pipes with a slight increase in pres- A prerequisite for commissioning is the complete sure. -
Page 19: Maximum Dispensing Medium Flow Rate
7.4 Maximum dispensing medium flow rate The following diagram shows the maximum dispensing medium flow rate depending on the storage tank temperature; this assumes a pre-set hot water temperature of 45 °C at the dispensing connection. The integrated regulation prevents the temperature from decreasing as long as the maximum medium flow rate is not exceeded. - Page 20 REMKO EFS series The following diagram shows the maximum dispensing medium flow rate if the hot water temperature is 45°C at the dispensing connection, after being mixed with cold water with a temperature of 10°C. The hot water temperature set on the controller is 60°C.
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Page 21: Circulation Operation
In this operating mode, cir- vated (see the operating instructions of the con- culation begins at the start of the period that is troller). If the REMKO circulation pump is set. Circulation is deactivated after the set installed, the operating mode must be activated period expires. -
Page 22: Commissioning Report
REMKO EFS series 7.6 Commissioning report System operator System location Serial numbers REMKO EFS 21 - Medium flow rate probes - Controller - Software version Ø = Primary piping Ø = Secondary piping Other installations Circulation set Return distribution set... -
Page 23: Troubleshooting And Customer Service
Troubleshooting and customer service 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. Please inform your dealer if the unit is still not working correctly after all of the functional checks have been performed. -
Page 24: Care And Maintenance
REMKO EFS series Care and maintenance Care and maintenance The manufacturer recommends that annual main- tenance be carried out by authorised specialists. Cleaning the heat exchanger: If the water quality (e.g. high degree of hardness or heavy soiling) is likely to cause a build-up of deposits, cleaning must be carried out at regular intervals. -
Page 25: View Of The Unit And Spare Parts
View of the unit and spare parts Fig. 12: Spare parts Designation EFS 21 Wilo PARA 15/7 iPWM2 1125560 Heating return with integrated gravity brake 1125561 Plate heat exchanger copper-soldered 1125562 Regulation 1125563 Pt 1000 Buffer supply inlet 1125564 Base plate 1125565 Manual bleed valve 1125566... -
Page 26: Index
REMKO EFS series Index Assembly ......15 Packaging, disposal ..... . 6 On the storage tank . - Page 28 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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