Related Manuals for DEHOUST GWtec 140
Summary of Contents for DEHOUST GWtec 140
- Page 1 Installation, Operation and Inspection Manual DEHOUST GWtec 140, 240, 340, 440, 640 ® Greywater treatment plants for greywater reuse Version 1.0 (September 2024) US Version www.dehoust.com...
- Page 2 INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 Manufacturer: DEHOUST GMBH Gutenbergstr. 5 -7 69181 Leimen Germany Contact: Phone: +49 (0) 6224 9702-0 Fax: + 49 (0) 6224 9702-70 E-mail: info@dehoust.de Website: www.dehoust.com Version1.0 Last revised: September 2024 Page 2 | 90...
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Page 3: Table Of Contents
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 Contents Safety instructions ................................. 6 1.1. General safety instructions............................6 1.2. Cross-reference to other instructions ........................6 1.3. Symbols used in this manual ............................7 1.4. Safety regulations ............................... 7 1.5. Risks and hazards from non-compliance with the manual .................. - Page 4 Mains water make-up connection..........................43 6.9. Emergency overflow of service water tank......................44 6.10. Connection to the service water system ......................45 Electrical connection ..............................46 DEHOUST Connect web interface ..........................48 Control via touchscreen color display ........................49 9.1. SETTINGS ..................................52 9.1.1. Tanks ...................................52 9.1.2.
- Page 5 12.2. Pressure surges in mains water line ........................77 12.3. Presence of odors in the installation room ......................77 Inspection ...................................78 13.1. Coarse filter DEHOUST MAX ..........................78 13.2. Mains water make-up valve ..........................78 13.3. Hose and water connections ..........................78 13.4. Aeration unit ................................79 13.5.
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Page 6: Safety Instructions
For safe and smooth operation of the system, observe the additional instructions and manuals mentioned below, which are part of the delivery. These are: Compressor Operation Manual Wiring Diagram DEHOUST GWtec ® P&I Flow Chart DEHOUST GWtec ® Version1.0 Last revised: September 2024 Page 6 | 90... -
Page 7: Symbols Used In This Manual
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 1.3. Symbols used in this manual Passages marked with this symbol indicate that failure to respect the relevant precautions may cause slight personal injury or minor material damage. Passages marked with this symbol indicate that failure to respect the relevant precautions may cause death, severe personal injury or substantial material damage. -
Page 8: Risks And Hazards From Non-Compliance With The Manual
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 1.5. Risks and hazards from non-compliance with the manual Failure to observe the instructions given in this manual will void any warranty and damage claims. Non-compliance with the manual may, for example, result in the following hazards: danger to persons due to electrical, thermal, mechanical and chemical effects ... -
Page 9: Safety Instructions For Maintenance, Inspection And Installation Work
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 1.7. Safety instructions for maintenance, inspection and installation work You are not allowed to change or modify the system, unless with the prior consent of the manufacturer. Never use any parts other than original parts or spare parts authorized by the manufacturer. The use of non-compliant parts can void liability claims for defects arising therefrom. -
Page 10: Warranty And Liability
2.1. Warranty and liability The Standard Terms and Conditions of Sale and Delivery of DEHOUST GmbH apply. No warranty and liability claims can be accepted in case of personal injury or material damage attributable to any of the following causes: improper use of GWtec ... -
Page 11: Configuration
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 Thanks to the very high outflow quality – absolutely clear, odor-free and germ-free – the treated greywater (also known as service water) is suitable for hygienically safe long storage and a broad range of potential non-potable reuse applications. Should no treated greywater be available, the system will automatically change over to mains water to continue supplying water to all connected reuse points. -
Page 12: Scope Of Delivery
® delivery. Pre-assembled GWtec ® greywater treatment plant composed of: coarse filter DEHOUST MAX I/MAX II greywater collection tank(s) greywater batch pump DOC 3/7 ... -
Page 13: Improper Use
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 3.5. Improper use The GWtec greywater treatment plant is not designed for outdoor use. The effects of temperature, light and humidity ® can cause malfunctions and damage to the equipment. Do not use the GWtec greywater treatment plant outdoors. -
Page 14: Gwtec ® Technical Data
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 GWtec Technical Data ® 4.1. Dimensions & weights DEHOUST DEHOUST DEHOUST DEHOUST DEHOUST Greywater Connect Type GWtec GWtec GWtec GWtec GWtec ® ® ® ® ® Article No. 813371 813372 813373... -
Page 15: Electrical Data
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 4.3. Electrical data DEHOUST DEHOUST DEHOUST DEHOUST DEHOUST Greywater Connect Type GWtec ® GWtec ® GWtec ® GWtec ® GWtec ® Network connection Condition for network Stable connection without firewall connection... -
Page 16: Service Water Quality For Gwtec ® Model Series
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 4.5. Service water quality for GWtec model series ® Examples of guideline values for bacteriological monitoring acc. to EN 16941-2 Parameters Application by System type Application w/o spraying Test method CFU/100 ml spraying Cleaning, Jetting, garden... -
Page 17: Operations
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 4.6. Operations The controller of the DEHOUST GWtec ® greywater treatment plant controls and monitors all processes and operations in a fully automatic manner. The key processes are now explained for better understanding. -
Page 18: Explanation Of The Different Processes
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 4.6.1. Explanation of the different processes: Automatic supply of make-up mains water within the defined liquid level limits of the service Mains water make-up water tank (refer to Chapter 9.1.1). Automatic supply of make-up rainwater within the defined liquid level limits of the service Rainwater make-up water tank (refer to Chapter 9.1.1) Automatic backwash of the screen in the coarse filter according to settings (refer to Chapter... -
Page 19: Handling And Storage / Installation
Keep all pallets or components in a dry and cool place that is protected from sun and frost. Inspect every pack for damage upon delivery! Identify, record and report immediately any transport damage in detail in writing to the contract dealer or DEHOUST. 5.1. -
Page 20: Installation Of The Tanks
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 5.2. Installation of the tanks The installation of the tanks shall be in accordance with the separate installation drawing. Each individual tank is appropriately labelled and marked. 1,653lbs/m² After installation in the predefined place, the system must be connected to the power grid for an initial period of no less than 72 hours before the commissioning work can begin. -
Page 21: Installation Of Gwtec ® 140
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 5.2.1. Installation of GWtec ® A filter element / front view Installation top view You will find detailed drawings and installation drawings at https://www.dehoust.com/ProductFiles/Files/CAD/dh2d_813371_GWtec140.pdf Version1.0 Last revised: September 2024 Page 21 | 90... -
Page 22: Installation Variants For Gwtec ® 240
® Variant A Installation top view Two filter elements side by side You will find detailed drawings and installation drawings at https://www.dehoust.com/ProductFiles/Files/CAD/dh2d_813372_GWtec240A.pdf Variant B Installation top view Two filter elements in series, 31.5” less space (width) You will find detailed drawings and installation drawings at https://www.dehoust.com/ProductFiles/Files/CAD/dh2d_813372B_GWtec240B.pdf... -
Page 23: Installation Variants For Gwtec ® 340
® Variant A Installation top view Three filter elements side by side You will find detailed drawings and installation drawings at https://www.dehoust.com/ProductFiles/Files/CAD/dh2d_813373_GWtec340A.pdf Variant B Three filter elements Installation top view 31.5” less space (width) You will find detailed drawings and installation drawings at https://www.dehoust.com/ProductFiles/Files/CAD/dh2d_813373B_GWtec340B.pdf... -
Page 24: Installation Variants For Gwtec ® 440
GWtec® 140, 240, 340, 440, 640 5.2.4. Installation variants for GWtec ® Variant A Three filter elements side by side Installation top view You will find detailed drawings and installation drawings at https://www.dehoust.com/ProductFiles/Files/CAD/dh2d_813374_GWtec440A.pdf Version1.0 Last revised: September 2024 Page 24 | 90... - Page 25 GWtec® 140, 240, 340, 440, 640 Variant B Four filter elements in a group, 63” less space (width) Installation top view You will find detailed drawings and installation drawings at https://www.dehoust.com/ProductFiles/Files/CAD/dh2d_813374B_GWtec440B.pdf Version1.0 Last revised: September 2024 Page 25 | 90...
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Page 26: Installation Of Gwtec
GWtec® 140, 240, 340, 440, 640 5.2.5. Installation of GWtec ® Variant B Six filter elements in a group Installation top view You will find detailed drawings and installation drawings at www.dehoust.com/ProductFiles/Files/CAD/dh2d_813393_GWtec640B_2024-08-12.pdf Version1.0 Last revised: September 2024 Page 26 | 90... -
Page 27: Assembly
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 Assembly 6.1. GWtec ® Greywater Treatment Plant 6.1.1. Installation of the GWtec system, the membrane filter and the greywater filtration tank ® For ensuring safe operation, it is important to place the greywater filtration tank directly next to the greywater treatment plant and the membrane filter on the same level. -
Page 28: Piping Between Plant Components
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 6.1.2. Piping between plant components For the interconnection of plant components, we recommend the use of pipes from Viega corporation: Type Viega pipe Sanpress 2205, 35 x 1.5 mm, grade 1.4571, ... - Page 29 INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 Figure Figure Connect the lower pipe union Top front connections Figure Figure Bottom connections shut-off 2 Bottom connections Figure Top front connections Version1.0 Last revised: September 2024 Page 29 | 90...
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Page 30: Cabling Of Modules
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 6.1.4. Cabling of modules Module Plant component Greywater collection tank(s) Greywater filtration tank Rainwater filtration tank GWtec ® controller Filter (depending on variants 1 to 6) Service water storage tank The modules are equipped with junction boxes to be connected with each other and with the GWtec ®... -
Page 31: Installation Of The Suction Line To The Filtration Pump
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 6.1.5. Installation of the suction line to the filtration pump Connect the appropriately labelled tank fitting (filtrate pump) of the greywater filtration tank with the suction inlet of the filtrate pump using the transparent PVC hose included in the delivery, the pre-mounted brass pipe union and the hose clamps. -
Page 32: Backwash "In" Connection
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 6.1.6. Backwash “IN” connection Install the DN 32 (1 ¼“) backwash piping from the backwash pump at the service water tank (no drinking mains water) to the respective backwash inlet of the GWtec ®... -
Page 33: Backwash "Out" Connection
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 6.1.7. Backwash “OUT” connection Connect the appropriately labelled fitting at the GWtec station (Backwash OUT) with the tank fitting at the ® greywater collection tank (Backwash OUT) using a DN 32 (1 ¼“) backwash line. Alternatively, you can use the accordingly labelled fitting at the GWtec ®... -
Page 34: Filtrate Line Connection
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 6.1.8. Filtrate line connection Connect the appropriately labelled fitting at the GWtec station (filtrate outlet) with the tank fitting (filtrate outlet) ® at the service water tank. To do so, use the black PVC hose included in the delivery and the pre-mounted PP hose nozzles inclusive of flat gaskets. -
Page 35: Smartfloc Dosing Station
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 6.2. Smartfloc dosing station Connect the soft, transparent PVC hose to the suction lance. Do not insert the full length of the suction lance into the Smartfloc canister to have some spare length. Figure 11: Smartfloc canister with suction lance Place the Smartfloc canister into the GWtec station and connect the soft, transparent PVC hose to the inlet (left side) of... -
Page 36: Coarse Filter Connection
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 6.3. Coarse filter connection 6.3.1. Connection to water pipes The connection of the greywater downpipe to the coarse filter should be made only after the completion of all construction work inside the building. Connect the overflow of the coarse filter with sufficient slope to the drain/sewer. -
Page 37: Connection To The Backwash Line
GWtec® 140, 240, 340, 440, 640 6.3.2. Connection to the backwash line Connect the backwash fitting of the DEHOUST MAX coarse filter with the service water piping from the GWtec station ® (coarse filter backwash) in a secure, tight and stress-free manner. -
Page 38: The Storage Tanks
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 6.4. The storage tanks 6.4.1. Installation Make sure the tanks are all installed horizontally on the same level to avoid malfunctions during operation. 6.4.2. Coarse filter connection Connect the greywater from the coarse filter to the accordingly marked lip seal at the greywater collection tank (greywater inlet) in a secure, tight and stress-free manner. -
Page 39: Connection To Sewer
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 6.4.3. Connection to sewer The overflow connector of the storage tank is a smooth pipe socket. Connect it with the sewer/drain. No cross-section reduction Prevent backflow in storage tank Lay overflow pipe with gradient Install overflow pipe downwards The installation room is exposed to a risk of flooding if the overflow fitting is not connected with the sewage system. -
Page 40: Vent Connection (Optional)
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 6.4.4. Vent connection (optional) We recommend the installation of a separate vent line (not included in the delivery) for the greywater collection tank and the greywater filtration tank. Either tank features a 2” tank connector with internal thread for this purpose. Vent line connection 2”... -
Page 41: Greywater Batch Pump
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 6.6. Greywater batch pump Connect the accordingly labelled tank fittings (greywater batch pump) using the black PVC hose included in the delivery and the pre-mounted PP hose nozzles inclusive of the white flat gaskets to form a secure, tight and stress-free connection. 1”... -
Page 42: Backwash Pump
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 6.7. Backwash pump Connect the backwash pump in the service water tank using the PVC plug-in connector and the black HDPE pipe to form a secure, tight and stress-free connection. Pass the cable of the backwash pump from the inside through the screwed cable gland at the top of the tank (shown in red in the drawing) and tighten the cable gland to fix the cable. -
Page 43: Mains Water Make-Up Connection
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 6.8. Mains water make-up connection Connect the appropriately labelled fitting at the service water tank (mains water make-up) in a secure, tight and stress- free manner to the mains water system. For this purpose, do not use any materials other than those certified for drinking water installations. -
Page 44: Emergency Overflow Of Service Water Tank
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 6.9. Emergency overflow of service water tank In case of backflow into the service water tank, e.g. from clogged sewers, malfunction of a sewage lifting station, or the like, the backflow water will be discharged into the installation room through the lateral emergency overflow slots in the tank. In Europe, this unrestricted overflow under the EN 1717 standard is mandatory for the protection of the mains water line. -
Page 45: Connection To The Service Water System
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 6.10. Connection to the service water system Connect the appropriately identified suction line fitting on the service water tank (see picture below) with the building's pressure booster system in a secure, tight and stress-free manner. The building owner is recommended to install a shut-off valve and a releasable threaded ... -
Page 46: Electrical Connection
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 Electrical connection The master switch is located on the right-hand side of the control cabinet of the GWtec ® station. Please observe the wiring diagram of the GWtec greywater treatment plant. ®... - Page 47 INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 Check the phase sequence of the mains power for clockwise rotation. Always connect external electrical loads (for example, a pressure booster system) to a separate power source. Electrical work shall be performed by qualified electricians only. Specific national standards and laws have priority.
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Page 48: Dehoust Connect Web Interface
® standard LAN cable to the operator’s network/router. The web interface establishes an outbound VPN connection to the DEHOUST Connect portal through one of the three TCP ports (80, 443, or 1194). By default, the VPN connection is made through TCP port 1194. This port must be enabled for an outbound TCP connection in the operator’s firewall. -
Page 49: Control Via Touchscreen Color Display
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 Control via touchscreen color display A TFT touchscreen color display is provided to allow control of the GWtec greywater treatment plant. The main switch of ® the controller is located on the side of the control cabinet. Touchscreen color display Master switch of GWtec station... - Page 50 Different variants of the above components can be used according to the configuration of your specific DEHOUST GWtec system. ® Please check the packing slip of the DEHOUST GWtec system and the project drawing of the ® total system. Plant variants (The system drawing can vary by the number of filters).
- Page 51 INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 Touch the “Settings” gear icon to access the controller layout (refer to Chapter 9.1 SETTINGS and 9.2 CONTROLLER) Touch the “Messages and alarms” bell icon to access the overview of system messages (refer to Chapter 9.3 MESSAGES).
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Page 52: Settings
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 9.1. SETTINGS 9.1.1. Tanks Version1.0 Last revised: September 2024 Page 52 | 90... - Page 53 INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 To change the parameters, for example, to reduce mains water make-up from a value below 30% to a value below 25%, touch the number pad on the display. An input field opens in the form of a number pad where you can change the value by “typing”.
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Page 54: Recycling
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 9.1.2. Recycling To change the parameters, touch the number pad on the display. An input field opens in the form of a number block where you can change the value by “typing”. The new value is immediately accepted in the recycling settings. Do not forget to [Save] to maintain the values. -
Page 55: Network
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 9.1.3. Network Version1.0 Last revised: September 2024 Page 55 | 90... -
Page 56: Language Settings
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 9.1.4. Language settings Version1.0 Last revised: September 2024 Page 56 | 90... -
Page 57: System
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 9.1.5. System Enter the password on the keyboard Version1.0 Last revised: September 2024 Page 57 | 90... - Page 58 INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 9.1.5.1. Settings (system) Click on [Settings] to open the following display: Version1.0 Last revised: September 2024 Page 58 | 90...
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Page 59: Controller
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 9.2. CONTROLLER 9.2.1. Modes Version1.0 Last revised: September 2024 Page 59 | 90... - Page 60 INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 Modes Function A defined amount of Smartfloc flocculant is metered into the greywater filtration tank using the dosing pump in order to improve sedimentation. During aeration in recycling, the flocculant is thoroughly mixed with the greywater to Primary treatment ensure a quicker reaction.
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Page 61: Water Balance
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 9.2.2. Water balance Version1.0 Last revised: September 2024 Page 61 | 90... -
Page 62: Messages
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 9.3. MESSAGES Touch the “Messages and alarms” bell icon to open the overview display. Older messages are shown slightly greyed out. Click on [confirm] to acknowledge the alarm, and the system will attempt to continue operation in the previous mode. Figure One example with two active alarms and a historic malfunction Version1.0... -
Page 63: Important Tests Prior To Commissioning
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 Important tests prior to commissioning Before starting the pressure and leakage testing and commissioning, the following work on the GWtec greywater ® treatment plant must have been completed: The GWtec ®... -
Page 64: Testing Of Single Components
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 10.1. Testing of single components For testing individual components of the system, select the MODES function in the control settings. The MODES function is used to run pressure and leakage tests on all individual sections of the GWtec station and ®... - Page 65 INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 Commissioning the GWtec ® greywater treatment plant in three steps: Step 1 Step 2 Step 3 See Chapter 11.1 for details See Chapter 11.2 for details See Chapter 11.3 for details Commissioning in Drinking Water Changeover to Auto/Standby (control Do not activate the Automatic mode...
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Page 66: Drinking Water Mode - Greywater Bypass
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 11.1. Drinking Water mode – without greywater inflow Maintain the GWtec ® greywater treatment plant in this operating condition until completion of all construction works. Do not connect the greywater inlet of the treatment system as long as construction is still in progress in the building. Instead, lay a greywater bypass directly to the sewer during this period. - Page 67 INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 Please perform the following steps: Disconnect the greywater line from the DEHOUST MAX coarse filter to ensure no greywater can enter the greywater tank. Drain and clean the greywater collection tank(s) and greywater filtration tank completely. Pump out standing water, if ...
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Page 68: Drinking Water Mode - With Greywater Inflow
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 11.2. Drinking Water mode – with greywater inflow After completion of all construction work, the GWtec ® greywater treatment plant should be operated in the Drinking Water mode until the number of persons in the building reaches at least 25% of the building’s capacity. An efficient greywater bacteria culture in the GWtec greywater treatment plant will develop only if a sufficient amount of new greywater enters ®... - Page 69 Modifications in the firmware can result in considerable changes in plant processes. Therefore, do not make any changes unless in close coordination with your contract dealer or DEHOUST. A slight smell of greywater cannot always be fully avoided in the installation room or in the treated water.
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Page 70: Step 3: Automatic With Greywater Treatment
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 11.3. Step 3: Automatic with greywater treatment Once the typical powerful greywater microbiology is established, the control can be switched over to [Automatic]. Version1.0 Last revised: September 2024 Page 70 | 90... -
Page 71: Extended Rest Periods
The necessary individual components for the various tank sizes as well as a dosing schedule for your plant will be obtained from DEHOUST. It is important to observe the correct dosage, mixture and temperature and to give the microorganisms enough time for development. At the same time, special care is required when handling living organisms. -
Page 72: 11.5.2. Preparing The Bacteria Culture
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 11.5.2. Preparing the bacteria culture To activate the contaminant-adapted microorganisms, proceed as follows: Observe the dosing schedule closely. Place ready the required amount of microorganisms / the mixing ratio with water is 1 : 10. ... -
Page 73: Troubleshooting / Alarms
Troubleshooting / alarms 12.1. Controller alarms All fault/alarm messages are visually shown on the touchscreen display of the DEHOUST GWtec ® station. Touch the “Messages and alarms” bell icon to open the overview display. Older messages are shown slightly greyed out. - Page 74 INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 Error Error message Possible causes Remedy code Problem: Alarm triggered by the motor circuit-breaker of Check the backwash pump Backwash pump. backwash pump P6.1. P6.1. Check. The floating alarm contact opens the output. The alarm will be reset automatically after elimination of the problem.
- Page 75 INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 Error Error message Possible causes Remedy code Alarm: The liquid level measured at S6.1 in the service Check service water tank and SWT empty. Dry-run water tank is < 5% for more than 5 seconds. piping for leakage.
- Page 76 Check the membrane filter for Insufficient filtration to Chapter 9.3.3). clogging. If necessary, contact DEHOUST or the contract The floating alarm contact opens the output. dealer for inspection. The alarm will be reset automatically as soon as the problem is eliminated, or the actual flow rate exceeds the minimum target flow rate.
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Page 77: Pressure Surges In Mains Water Line
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 12.2. Pressure surges in mains water line The solenoid valve of the mains water make-up opens gently through a servo-controlled membrane, which normally prevents pressure surges in the mains water line. Pressure surges (water hammer) occur when the difference between resting pressure and flow pressure is higher than 2 bar. -
Page 78: Inspection
Inspections should be carried out by the operator of the plant. ► Servicing and repairs shall be performed by qualified personnel only. If faults/defects are found during an inspection of the DEHOUST GWtec ® plant, please contact your contract dealer or DEHOUST. -
Page 79: Aeration Unit
12,000 operating hours (approx. 20 months of operation) the controller display will show an Inspection message. Please contact a contract dealer or DEHOUST for the inspection. The filtration output of the membrane filter depends on the composition of the greywater, the timing settings for aeration, sedimentation and filtration, the daily amount of greywater, and the consumption of service water. -
Page 80: Optional Accessories
0.6 and connect it to the controller of the GWtec ® station. The electrical connection shall be in accordance with the circuit diagram DEHOUST GWtec AutoDrain ® Failure to connect the AutoDrain to the sewer results in a risk of flooding for the installation room. -
Page 81: 14.1.2. Technical Data
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 14.1.2. Technical data Open-close motorized ball valve – Inlet: 1" OT Open-close motorized ball valve – Outlet: 1" IT Control: ModBus Motor torque: 5 Nm Motor runtime: 90 sec ... -
Page 82: Mains Water Flow Sensor (Article 815070)
Make sure the flow sensor is installed and sealed in between the mains water make-up valve at the tank and the water mains entry point of the building. The electrical connection shall be in accordance with the circuit diagram Mains water flow sensor DEHOUST GWtec ® 14.2.2. Technical data Inlet: 1 1/2"... -
Page 83: Service Water Flow Sensor (Article 815075)
Sensor with a flow rate of up to 52,83 g.p.m. 14.3.1. Installation Connect and seal the flow sensor in the service water line. The electrical connection shall be in accordance with the circuit diagram DEHOUST GWtec ® Service water flow sensor 14.3.2. -
Page 84: Gwtec® Rainwater Feeder Package (Article 813457) With Rft Rainwater Filtration Tank (Article 962046)
RFT rainwater filtration tank (Article 962046) GWtec rainwater feeder package for automatic ® rainwater make-up through the RFT rainwater filtration tank in a Dehoust GWtec ® -type greywater treatment and reuse system. The rainwater feeder pump and tank level monitoring... - Page 85 INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 14.4.1.2. Electrical connection Lay the power supply cable of the rainwater feeder pump up to the GWtec , extend the cable, if necessary. ® Connect it to the GWtec ® (refer to Chapter 6.1.4 "Cabling of modules"). Never allow the feeder pump to hang from the feeder cable by its dead weight.
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Page 86: 14.4.2. Technical Data
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 14.4.2. Technical data Delivery rate, Qmax: 72,65 g.p.m. Delivery head: max. 44.3 ft Immersion depth: max. 32.8 ft Supply voltage: 230 V / 50 Hz Nominal power: 1,100 W ... -
Page 87: Customer Services
® controller. Please scan this code. You will then have direct access to our DEHOUST Cloud, and all our technical documents stored there for your specific equipment. 15.2. Notice for the residents of a building with a greywater reuse system (fill-in form) Version1.0... -
Page 88: Declaration Of Conformity
INSTALLATION, OPERATION, INSPECTION GWtec® 140, 240, 340, 440, 640 Declaration of Conformity Version1.0 Last revised: September 2024 Page 88 | 90... -
Page 89: Disposal Considerations
The operator of the system must recycle the packaging material in accordance with the local waste management regulations. At the end-of-life cycle, the equipment shall be shipped, free of freight charge for the manufacturer, to DEHOUST GmbH for disposal. All further dismantling/recycling action will be taken by the manufacturer. Version1.0... - Page 90 ENERGY. HEAT. WATER. DEHOUST GmbH 69181 Leimen Gutenbergstrasse 5-7 Phone +49 62 24 / 97 02-0 Fax +49 62 24 / 97 02-70 info@dehoust.de 31582 Nienburg Forstweg 12 Phone +49 50 21 / 97 03-0 Fax +49 50 21 / 97 03-70 01809 Heidenau Dürerstrasse 1...
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