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This appliance incorporates backflow protection
complying with AS/NZS 3500.1
No further backflow protection is required for connection
to the water supply.
Sparkling, Chilled and Ambient
Water Dispenser
STM1 Installation and Operating Manual
with ST1 and ST2 Tap Options.
Please read these instructions carefully before installation.
Copyright Sodatap© 2023 Page 1 STM1 Manual V10
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Summary of Contents for Watermark STM1
- Page 1 This appliance incorporates backflow protection complying with AS/NZS 3500.1 No further backflow protection is required for connection to the water supply. Sparkling, Chilled and Ambient Water Dispenser STM1 Installation and Operating Manual with ST1 and ST2 Tap Options. Please read these instructions carefully before installation. Copyright Sodatap© 2023 Page 1 STM1 Manual V10...
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Page 2: Table Of Contents
How to use the tube connection fittings ..................27 Safety Considerations ........................28 Leakage Detection ........................30 Maintenance ..........................31 Filter replacement ........................31 Gas Replacement – As Required ....................34 Troubleshooting ..........................35 Warranty ............................36 List of Figures ..........................37 List of Tables .......................... 37 Copyright Sodatap© 2023 Page 2 STM1 Manual V10... -
Page 3: Customer Service
Customer Service © Congratulations on your purchase of the Sodatap Water Dispenser. The STM1 is a high performance unit manufactured using quality materials and components. Once installed correctly, and if it is maintained properly, it will give years of reliable and trouble-free service. More information about Sodatap, contact details and access to spare parts can be found at sodatap.com.au. -
Page 4: Product Specifications
Product Specifications Model Number STM1 Flow Capacity 20 Lph Max Power Consumption 100 W Max Water Pressure 500 Kpa Recommended Water Pressure 350 Kpa Room Temperature Operating Range 10°C to 40°C Chilled Temperature 4°C to 10°C Power Requirements 50 Hz / 220-240 V... -
Page 5: Product Dimensions
Product Dimensions Figure 1: Dimensions STM1 Unit Copyright Sodatap© 2023 Page 5 STM1 Manual V10... -
Page 6: Figure 2: Dimensions St1 Tap
* note - some models may be 20mm taller Figure 2: Dimensions ST1 Tap Figure 3: Dimensions ST2 Tap Copyright Sodatap© 2023 Page 6 STM1 Manual V10... -
Page 7: Parts Overview
Parts Overview After unpacking the equipment, ensure all parts are present and check that none have been damaged in transport. Your purchase should include the following parts: see note below ^ ^ This appliance incorporates backflow protection complying with AS/NZS 3500.1 No further backflow protection required for connection to the water supply. Figure 4: Parts Included Parts exclude a CO bottle*. Provided the supplied pressure regulator is installed, most bottles can be used, including a regular SodaStream bottle however, for better value and ease of use, we recommend using a 2.6kg bottle available from sodatap.com.au or your local brewing supply store (where they can also be refilled). The ST2 tap is an optional substitute for the ST1 tap. The tubing included can be used for both CO and water connections. It can be cut to any length and the amount supplied is ample for regular installation. *unless selected with your order ^ a 0.9kg bottle is also available if space is restricted Copyright Sodatap© 2023 Page 7 STM1 Manual V10... -
Page 8: Table 3: Parts List
3-way valve For connection to water outlet 350 Kpa pressure Reduces inlet water pressure when limiting valve required* (see note below table) STM1 unit Main chiller/filter & carbonation unit Pressure regulator To set and adjust CO output pressure valve 240 V power Connects unit to standard AU 10 A... -
Page 9: Before Installation
This will prevent damage or malfunction in case the line pressure exceeds 350 kPa, which is the recommended limit for the STM1 unit. • Caution: The STM1 system is designed for mains/town water supply only and this supply must be microbiologically safe and disinfected if appropriate. • Check the appliance rating (see specifications for power requirements), and ensure the correct power supply is available for the appliance and that the relevant circuit will not be overloaded. -
Page 10: Figure 5: Stm1 Unit At A Glance
The water and gas supply should be turned off if no one is home for an extended period of time. Figure 5: STM1 Unit at a Glance Copyright Sodatap© 2023 Page 10 STM1 Manual V10... -
Page 11: Installation Instructions
LED light (Figure 6: Touch panel buttons and colours - ST1 tap). Press the desired button once and the LED light will change from blue to green to indicate that the tap is ready. Press the button again to start dispensing water. Figure 6: Touch panel buttons and colours - ST1 tap Copyright Sodatap© 2023 Page 11 STM1 Manual V10... -
Page 12: Plumbing Installation - St1 Tap
Plumbing Installation – ST1 Tap The following instructions refer to the diagrams in Figure 7: STM1 Unit Plumbing and Figure 8: Complete STM1 Installation (ST1 tap and parts as listed). 1. A 26 mm hole is required for the ST1 tap (max. 30 mm). Select a suitable position for the tap on the counter top so that it will dispense into the sink bowl with ample clearance below the outlet. -
Page 13: Figure 7: Stm1 Unit Plumbing
0 = off 1 = on Water Inlet ¼” PE Inlet Water Pipe Tap Wire Connector 350 Kpa Pressure Water Outlet Limiting Valve Figure 7: STM1 Unit Plumbing Copyright Sodatap© 2023 Page 13 STM1 Manual V10... - Page 14 12. Attach the wiring loom from the tap to the unit, taking care not to bend or break the pins. 13. Connect the power cord at the rear of the unit to the power outlet. Note: DO NOT turn on the water or power supply, this will be done in the Cold/Ambient Water Commissioning steps. Copyright Sodatap© 2023 Page 14 STM1 Manual V10...
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Page 15: Figure 8: Complete Stm1 Installation (St1 Tap And Parts As Listed)
The following diagram illustrates the complete installation of the STM1 unit, showing the ST1 tap and other parts as in Table 3: Parts List Are you a Plumber? Contact us to find out how we can help grow your business! info@sodatap.com.au (see note below^) -
Page 16: St2 Tap Introduction
The ST2 is an optional substitute for the ST1 tap. The ST2 tap replaces an existing tap and provides functionality for dispensing regular hot and cold tap water (right-hand lever), and filtered chilled, filtered ambient and filtered chilled sparkling water (left-hand controller). Note ‐ If no coloured stripes are present, they are inter‐ changeable. Figure 9: ST2 Tap Parts Overview Copyright Sodatap© 2023 Page 16 STM1 Manual V10... -
Page 17: Figure 10: St2 Right-Hand Tap Instructions
ST2 Tap Operation – Right-hand side Figure 10: ST2 Right-hand Tap Instructions Copyright Sodatap© 2023 Page 17 STM1 Manual V10... -
Page 18: Figure 11: St2 Left-Hand Tap - Stop Dispensing Positions
ST2 Tap Operation – Left-hand side Figure 11: ST2 Left-hand Tap – Stop Dispensing Positions Copyright Sodatap© 2023 Page 18 STM1 Manual V10... -
Page 19: Figure 12: St2 Left-Hand Tap Dispensing Modes
The controller has 5 positions (refer Figure 11: ST2 Left-hand Tap – Stop Dispensing Positions. The next two diagrams illustrate controller positions for the Chilled and Sparkling Water dispensing modes. Figure 12: ST2 Left-hand Tap Dispensing Modes Copyright Sodatap© 2023 Page 19 STM1 Manual V10... -
Page 20: Plumbing Installation - St2 Tap
2. Referring to the diagram below, insert hot and ambient inlet water pipes into the corresponding holes, then twist the pipes to fix them into the tap body. Figure 13: ST2 Tap Plumbing (view 1) Copyright Sodatap© 2023 Page 20 STM1 Manual V10... -
Page 21: Figure 14: St2 Tap Plumbing (View 2)
4. Follow the sequence as marked in Figure 14: ST2 Tap Plumbing (view 2). Install silicone shim, metal shim and C-type nut. Tighten the screws. Figure 14: ST2 Tap Plumbing (view 2) Copyright Sodatap© 2023 Page 21 STM1 Manual V10... -
Page 22: Figure 15: Complete Stm1 Installation (St2 Tap And Parts As Listed)
6. Connect hot and ambient inlet water pipes with existing hot water and ambient water sources respectively. 7. Connect drinking water inlet pipe and 3-way valve to STM1 unit as illustrated in Figure 15: Complete STM1 Installation (ST2 tap and parts as listed). - Page 23 The following diagram illustrates the complete installation of the STM1 unit, showing the ST2 tap and other parts as in Table 3: Parts List. (see note below^) Figure 15: Complete STM1 Installation (ST2 tap and parts as listed) ^ This appliance incorporates backflow protection complying with AS/NZS 3500.1 No further backflow protection required for connection to the water supply Copyright Sodatap© 2023 Page 23 STM1 Manual V10...
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Page 24: Procedure For Co 2 Cylinder Installation
Apply some soapy water on the connection between the bottle and pressure regulator to test for leaks. Note: When the valve in the bottle is depressed during connection, some CO may escape. (sodastream type bottle only) Please wear protective gloves and screw the bottle on as fast as possible. Figure 16: CO Cylinder Installation Copyright Sodatap© 2023 Page 24 STM1 Manual V10... -
Page 25: Commissioning Of Cold/Ambient Water
Note: The temperature to be maintained in the tank is preset to 4-10 degrees. It takes approximately 20-30 minutes to complete the chilling cycle, depending on incoming water temperature and ambient surroundings of the unit. Copyright Sodatap© 2023 Page 25 STM1 Manual V10... -
Page 26: Commissioning Of Soda/Sparkling Water
10. Allow 1-2 hours for the water to chill and to reach full carbonation. Note: A small amount of water will be dispensed after using the sparkling feature for 1-2 seconds. This is normal as the CO is purged from the line. Please conduct a soapy water leakage test as detailed on page 34, item 7. Copyright Sodatap© 2023 Page 26 STM1 Manual V10... -
Page 27: How To Use The Tube Connection Fittings
How to use the tube connection fittings Figure 17: Using Tube Connection Fittings Copyright Sodatap© 2023 Page 27 STM1 Manual V10... -
Page 28: Safety Considerations
(lever in perpendicular position). For safety, the maximum time for a single dispensing is 75 seconds. Press the button (ST1 tap) or turn the lever (ST2 tap) once again to dispense more water. Please contact your distributor or a qualified technician for repairs if the water dispenser is damaged or if it operates incorrectly. Copyright Sodatap© 2023 Page 28 STM1 Manual V10... -
Page 29: Figure 18: Safety Considerations
Figure 18: Safety Considerations Copyright Sodatap© 2023 Page 29 STM1 Manual V10... -
Page 30: Leakage Detection
3. Remove the side panel of the unit, wipe off any excess water from the probe of the leak detector and the base panel. 4. Replace the side panel. 5. If leaking continues, please contact the distributor or a qualified technician. Figure 19: Leak Detection Copyright Sodatap© 2023 Page 30 STM1 Manual V10... -
Page 31: Maintenance
Maintenance Filter replacement Filter replacement is advised every 6 months, when taste diminishes or when water flow is reduced. Replacement filters are available from sodatap.com.au The use of improper filters may void your warranty. Turn off the water supply at the inlet. The 3‐way valve is shut when the lever is perpendicular. Depressurise the water lines by dispensing ambient water until flow stops. Remove the filter cover by pushing in the clip-on top of the unit. Figure 20: Filter Cover Removal Copyright Sodatap© 2023 Page 31 STM1 Manual V10... -
Page 32: Figure 21: Filter Unit Removal
Push in the release button on the filter manifold and lift it out of the unit. Figure 21: Filter Unit Removal Unscrew old filters from the manifold in a counter-clockwise direction. Block Nano Block Nano Carbon Silver Carbon Silver Carbon Carbon Figure 22: Unscrew and Insert Filters Copyright Sodatap© 2023 Page 32 STM1 Manual V10... - Page 33 10. Flush the filters for 5-10 minutes by dispensing chilled water firstly for a few minutes, followed by ambient water for a further few minutes or until black carbon particles have cleared. It is normal for particles, cloudiness or micro-bubbles to appear during the filter flush process. Copyright Sodatap© 2023 Page 33 STM1 Manual V10...
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Page 34: Gas Replacement - As Required
(a visual gauge of when the bottle is nearing empty and requires replacement). When decreasing pressure, the pressure release valve can be pulled momentarily to assist with setting a lower pressure if required. This valve can be pulled upwards and is identified by a keyring. Slowly open the red regulator valve and dispense sparkling water from the tap for several seconds by selecting the sparkling water position. Next, turn the tap selector to 'off' (by lining the selector up with any of the blue lines) and allow the machine to refill for approximately 1 minute, repeating this process until water carbonation is evident in the dispensed water. Note: The pressure on the pressure gauge should fluctuate between 3‐4 Bar during this process and during normal operation. 6. Allow 1-2 hours for the water to both chill and reach full carbonation. : A small amount of water may be dispensed after using the sparkling Note is purged from the line. water feature. This is normal as the CO Using a spray bottle and soap solution, lightly spray all CO connections to check for leaks. These will be evident if the solution is 'foaming' from the connection points. In this case disassemble the leaking joint and inspect it for any burs or foreign material. Clean the fitting, re‐assemble and test again. Copyright Sodatap© 2023 Page 34 STM1 Manual V10... -
Page 35: Troubleshooting
2. CO level is low 2. Check and replace CO cylinder 3. CO outlet pressure is 3. Adjust pressure regulator to too low increase pressure (do not exceed 4 Bar) Table 4: Troubleshooting Note:It is normal for the unit to produce some heat evident in the cupboard space, particularly during cooling. This can be exacerbated by hot water dishwashing in the sink. This is normal as the unit dissapates heat to cool the water but should the cupboard space exceed 35 degrees celcius, leave the cupboard door open for a while and consider additional ventilation. If the temperature continues to rise, switch off the unit and call professional assistance. Copyright Sodatap© 2023 Page 35 STM1 Manual V10... -
Page 36: Warranty
You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure. Copyright Sodatap© 2023 Page 36 STM1 Manual V10... -
Page 37: List Of Figures
Figure 6: Touch panel buttons and colours - ST1 tap ..............11 Figure 7: STM1 Unit Plumbing ...................... 13 Figure 8: Complete STM1 Installation (ST1 tap and parts as listed) ..........15 Figure 9: ST2 Tap Parts Overview ....................16 Figure 10: ST2 Right-hand Tap Instructions ..................