User manual BOSCH GWS 10-125

[. . . ] In the Commonwealth of Massachusetts this product must be installed by a licensed plumber or gas fitter. Upon completion of the installation, these instructions should be handed to the user of the appliance for future reference. · Do not touch any electrical switch; do not use any phone in your building. · Immediately call your gas supplier from a neighbor's phone. [. . . ] Warning: This heater must be electrically grounded in accordance with the most recent edition of the National Electrical Code. In Canada, all electrical wiring to the heater should be in accordance with local codes and the Canadian Electrical Code, CSA C22. 1 Part 1. Do not rely on the gas or water piping to ground the metal parts of the heater. 4. 2 Position of the fuses in control unit To check fuses, proceed as follows: B Remove the front cover, see Fig. 35 B Pull control unit free to access and remove the six screws from the back cover of the control unit, see Fig. 3. The GWS 10-125 requires an electrical power supply from a 120VAC / 60Hz circuit (with a dedicated outlet) and must be properly grounded. 36 Location of fuses B After verifying the fuses mount all parts in reverse order. 6 720 608 158 25 Operation instructions 5 Operation instructions Fig. 37 1 2 3 4 5 6 7 On/Off button Reset button Program Key LCD display Up button Down button LED - Power On indicator or Stand-by 5. 1 Description LCD display Warning: Do not use any cleaning or corrosive agent to clean the window. 40 Error indicator 26 6 720 608 158 Operation instructions 5. 2 For your safety read before operating your water heater Warning: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. 5. 4 Temperature selection or in order to reach desired To select output water temperature: B Press buttons temperature. A. This appliance is equipped with electronic ignition for lighting the main burner. B Do not touch any electric switch; do not use any phone in your building. If control switch is jammed, close the gas supply and call a qualified service technician. Caution: B Check and clean the complete water heating system once a year. Pressure relief valve · Manually open the pressure relief valve to ensure proper operation. Inlet water filter · Verify the inlet filter screen is clean and undamaged. The inlet water filter is located above the ¾" cold water inlet on the right side of the appliance (See Fig. Close installer supplied cold water shutoff and supplied water shutoffs, carefully remove inlet and outlet clips on watervalve. Inspect venting system Inspect heat exchanger Inspect burner Inspect condensate trap Inspect water filter X X X X X · In areas where the water supply has a high mineral content (see Table 2, page 12), the heat exchanger should be periodically flushed with a descaling solution. Scale build up will shorten the life of the water heater and damage resulting from is not covered under warranty. Refer to section 6. 3 for detailed instructions on descaling the heat exchanger. Fin coils · Inspect heat exchanger fincoil for soot build-up or blockage. To access fincoil, venting must be removed from flue gas exhaust accessory. If there is evidence of soot build-up or blockage, the heat exchanger should be removed by a professsional and cleaned thoroughly. [. . . ] Contact your city authorities for information about the disposal of recyclable products. Saving water resources: B Make sure you close all the taps after any use. B Define the temperature you want, in the appliance or with the remote control. This way you have the precise water flow needed (mixing cold water to regulate temperature will increase the water flow with consequent waste of water). 54 6 720 608 158 Limited Warranty 14 Limited Warranty costs associated with service, removal or re-installation of the original water heater or a replaced water heater. General BOSCH PRO tankless water heaters are warranted by the Manufacturer (BOSCH) through BBT North America. [. . . ]