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Summary of Contents for REMKO EFS 50
- Page 1 Assembly and operating instructions REMKO fresh water station EFS 35/EFS 50 Instructions for users and specialists Read the instructions prior to performing any task! 0062-2017-09 Edition 2, en_GB...
- 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! Installation and operating instructions (translation of the orig- inal)
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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 fresh water station 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 for the oper- 1.7 Safety notes for installation and ator 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 35 EFS 50 Operating data Maximum permitted pressure, primary Maximum permitted pressure, secon- dary Operating temperature °C 2-95 Pipe connections Primary circuit (tank circuit) Inches 1 1/2" OT 2" OT Secondary circuit (domestic water cir- Inches 1"... - Page 8 REMKO fresh water station Flow meter technical data Series FlowSonic Dimensions Height Top connection Inches 1" IT (DN20) Bottom connection Inches 1" IT (DN20) Hydraulics Measuring range l/min 1-100 Maximum permissible temperature °C 100 (medium) Maximum permissible pressure 16 (max. pressure surges 25 bar)
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Page 9: Pressure Loss Characteristic Curves
Fig. 1: Pressure loss characteristic curve EFS 35 A: Pressure [mWS] B: Medium flow rate [m C: Pressure [kPa] 1: Secondary/2: Primary EFS 50 Fig. 2: Pressure loss characteristic curve EFS 50 A: Pressure [mWS] C: Pressure [kPa] B: Medium flow rate [m 1: Secondary 2: Primary... -
Page 10: Unit Description
NOTICE! A check for pressure and leak tightness after successful installation must always be per- formed before commissioning REMKO GmbH & Co. KG herewith confirms that the supplied product corresponds to the UBA (German Environment Agency) positive list. Fig. 3: Product description... -
Page 11: Design And Planning
Design and planning 4.1 General notes CAUTION! The fresh water station is a fresh water module that heats domestic water according to the contin- Danger of scalding due to hot water! uous flow heater principle. In order to ensure fault- Due to external circulation in the primary circuit, free operation of the fresh water station, the water with a temperature of up to 90 °C can... -
Page 12: Design Of The Storage Tank
REMKO fresh water station 4.2 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... -
Page 13: Influence Of Water Quality On Corrosion Resistance
4.3 Influence of water quality on corrosion resistance This chapter is intended to provide an overview of the corrosion resistance of stainless steels and soldering materials in tap water at room temperature. The table lists several important chemical components, but the actual corrosion is a very complex process that is influenced by many different components in combination with each other. - Page 14 REMKO fresh water station Plate material Soldering mate- rial Concentra- Stai Time limits tion (mg/l or AISI AISI Nick nles Water content ppm) for analysis Hydrogen sulphide (H < 0.05 No limit > 0.05 Free (aggressive) < 5 No limit...
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Page 15: Circulation Operation
In the delivered state, circulation is not acti- vated (see the operating instructions of the con- Turn the screws into the wall plugs until troller). If the REMKO circulation pump is around 40 mm is sticking out of the wall. installed, the operating mode must be activated Remove the station from the packaging. - Page 16 Connect the pipes of the fresh water module EFS 35 to the system in accordance with Fig. 6, or the fresh water module EFS 50 in accordance with Fig. 7. Piping of the fresh water station EFS 35 Fig.
- Page 17 2. Secondary side: Integration in a domestic connection group (safety assembly) Hot water circulation, return flow, 1” connection, OT, flat-sealing 3. Secondary side: Please note! Cold water inlet, A domestic connection group (safety assembly) is required despite an integrated safety valve 1 1/4”...
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Page 18: Commissioning (Specialist)
REMKO fresh water station Commissioning (specialist) 7.1 General Information 7.2 Filling the primary circuit If the storage tank is (partially) filled NOTE: Open the valves in the pipes and the fresh water CAUTION! station slowly, in order to prevent pressure shocks. -
Page 19: Commissioning The Controller
7.3 Commissioning the controller DANGER! Danger due to electric shock! Check whether the probes and pumps to the controller are connected and whether the con- troller housing is closed. Only then should you insert the power plug into the socket. Remove the controller's front panel (see the controller instructions). -
Page 20: Maximum Dispensing Medium Flow Rate
REMKO fresh water station 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 inte- grated controller prevents the temperature from decreasing as long as the maximum medium flow rate is not exceeded. - Page 21 60 °C. 90 °C 80 °C 70 °C 65 °C Friwa EFS 50 Friwa EFS 35 Fig. 14: Maximum dispensing medium flow rate A: Dispensing medium flow rate [l/min] B: Power [kW] 1: Hot water temperature: 45°C after heating to 60°C and mixing in cold...
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Page 22: Setting The Temperature
REMKO fresh water station 7.5 Setting the Temperature Set the required (maximum) domestic hot water temperature on the controller under "Para". To ensure that scalding cannot occur at the water valve, the maximum hot water temperature must not exceed 60 °C. - Page 23 *) maximum medium flow rate of the EFS 50 is 88 l/min (EFS 35 = 65 l/min). The pressure loss of the fresh water station is 1000 mbar in this case (higher values are possible in a limited way hydraulically. Measure-...
- Page 24 *) maximum medium flow rate of the EFS 50 is 88 l/min (EFS 35 = 65 l/min). The pressure loss of the fresh water station is 1000 mbar in this case (higher values are possible in a limited way hydraulically. Measure-...
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Page 25: Commissioning Report
7.6 Commissioning report System operator System location Serial numbers REMKO EFS25 - Medium flow rate probes - Controller - Software version Ø = Primary piping Ø = Secondary piping Other installations Circulation set Return distribution set Miscellaneous: Are both circuits cleaned and bled properly? (no air noises in the pump) -
Page 26: Depiction Of Spare Parts (Specialist)
REMKO fresh water station Depiction of spare parts (specialist) Depiction of spare parts EFS 35/50 Fig. 15: Spare parts EFS 35/50 We reserve the right to modify the dimensions and design as part of the ongoing technical development process... - Page 27 Spare parts list EFS 35/50 Designation EFS 35 EFS 50 Controller 260156-9 260156-9 Grundfoss circulation pump UPM 2-25/75 260156-2 Screw-in probe 15 mm G 1/4 260156-3 Piston valve DN 20, red 260156-6 Piston valve DN 20, blue 260156-6 Safety valve (1/2" x 3/4") 10 bar...
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Page 28: Index
EFS 35 ......9 EFS 50 ......9 Design of the storage tank . - Page 30 REMKO fresh water station...
- Page 32 SFlb Customer Service Our equipment operates precisely and reliably. However, in the event of a fault, REMKO customer service is quickly at the scene. Our comprehensive network of experienced dealers always guarantees quick and REMKO GmbH & Co. KG reliable service.
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