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Table of Contents
Related Manuals for Bosch DHW Tank QWST120 O
Summary of Contents for Bosch DHW Tank QWST120 O
- Page 1 Installation and Maintenance Instructions DHW Tank QWST120 O...
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Page 2: Table Of Contents
Table of Contents Table of Contents Key to symbols and safety instructions ..3 Explanation of symbols ....3 Safety instructions ....3 General points . -
Page 3: Key To Symbols And Safety Instructions
Key to symbols and safety instructions Key to symbols and safety instructions Explanation of symbols Safety instructions Warnings Safety instructions Failure to observe the safety instructions can result in Warnings are indicated in the text by a serious injury and a risk of fatal injury as well as damage warning triangle and a gray background. - Page 4 Key to symbols and safety instructions Installation and operation Instructing the owner/operator B Have the appliance installed only by a qualified B Instruct the owner/operator in the functionality and contractor. operation of the appliance. B Ensure that the hot water tank is completely full prior B Inform the owner/operator that they must never carry to start up.
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Page 5: General Points
General points General points Delivered condition The DHW tank QWST120 O Is delivered as a fully assembled unit. Additional components supplied with the tank: 125 psi P and T valve 3/4" brass couplings 3/4" brass tee Honeywell L4006 adjustable differential tank... -
Page 6: Moving The Tank
Moving the tank Moving the tank B Lay the polystyrene cover [1] on the ground and NOTICE: Take care not to damage the tank carefully lay the DHW tank [2] on its side. when moving it. B Remove bottom polystyrene pad and pallet. Install the B Observe the handling instructions on the adjustable feet M10 x 30 [3]. -
Page 7: Dimensions And Connections
Dimensions and connections Dimensions and connections 20" 20" (508 mm) 6 720 648 100-13.1ITL Fig. 4 Dimensions and connections Magnesium anode Hot water outlet Cold water inlet Tank coil supply Tank coil return Hot water temperature sensor or Aquastat Drain Type EK/AB Sacrificial... -
Page 8: Installation
Installation Installation Connections and fittings B Level the DHW tank by adjusting the feet ( Fig. 5). It is the installer's responsibility to follow national and local code when installing this tank ( Fig. 6). B Connect all piping to the DHW tank by means of threaded fittings. -
Page 9: Temperature Monitoring Control Options
Installation Temperature monitoring control WARNING: Precautions must be taken prior options to manually operating the relief valve to Install a temperature sensor or an Aquastat on the DHW avoid contact with hot water being released tank to measure and monitor the hot water temperature. and to prevent water damage. -
Page 10: Installing The Aquastat
Installation 5.3.2 Installing the Aquastat B Feed the temperature probe [4] with the spring [5] into the sensor well [3]. Ensure that the probe makes DANGER: Risk of fatal injury from electric contact with the well wall over its entire length. shock. -
Page 11: Commissioning
Commissioning Commissioning NOTICE: Risk of property damage in the event of improper operation! Commissioning with a partially filled tank can destroy the appliance. B Check that the DHW tank is completely filled and that fresh water can enter the tank. Prior to commissioning, check for the following and ensure that systems are connected and operating properly:... -
Page 12: Maintenance And Cleaning
Maintenance and cleaning Maintenance and cleaning Checking the magnesium anode DANGER: Risk of fatal injury from electric shock. The anode rod must be inspected annually B Only trained and certified electricians are and replaced if compromised. Failure to permitted to carry out electrical work. operate the tank without a properly maintained anode rod may void the B Isolate the DHW tank electrically by using... -
Page 13: Cleaning
Maintenance and cleaning Cleaning Recommissioning after cleaning B Unscrew the plug [1] from the inspection port. B Seal the magnesium anode [2] back into place. B Seal the plug [3] back into the inspection port. 6 720 648 100-11.1ITL 6 720 648 100-10.1ITL Fig. -
Page 14: Spare Parts For Qwst120 O
7 747 022 050 Immersion pipe, 1-1/4" (31 mm) long 7 747 020 191 Immersion pipe, 32" (813 mm) long 7 747 020 190 Table 4 Spare parts available for the QWST120 O from Bosch 6 720 648 071 (2012/03) - Page 15 Notes 6 720 648 071 (2012/03)
- Page 16 United States and Canada Bosch Thermotechnology Corp. 50 Wentworth Avenue Londonderry, NH 03053 U.S.A. Tel. 03-552-1100 Fax 603-584-1681 www.bosch-climate.us Bosch Thermotechnology Corp. reserves the right to make changes without notice due to continuing engineering and technological advances.