Bosch WTS Serie Notice D'installation Et D'entretien page 3

5. Do not use an extension cord set with this water heater. If no
receptacle is available adjacent to the water heater, contact a qualified
electrician to have one properly installed.
6. As with any appliance, close supervision is necessary when used by
children.
7. Do not operate this water heater if it has a damaged cord or plug, if it
is not working properly, or if it has been damaged or dropped.
8. This water heater should be serviced only by qualified service
personnel. Contact nearest authorized service facility for examination,
repair, or adjustment.
SAVE THESE INSTRUCTIONS
Read all instructions before installing. Perform steps in the order given.
Have this indirect water heater serviced/inspected by a qualified service
technician, at least annually. Failure to comply with the above could
result in severe personal injury, death or substantial property damage.
Installation and conversion
B Risk of fire through soldering and welding!
Take appropriate protective measures when soldering and welding as
the thermal insulation is flammable; for example, cover the thermal
insulation.
B Ensure that the solar storage tank is installed or converted only by an
authorized contractor.
B Use installation materials that are sufficiently heat-resistant.
Installation and commissioning
B In the Commonwealth of Massachusetts this tank must be installed by
a licensed plumber or gas fitter.
B The power supply must be connected by a licensed electrician. The
wiring diagram must be followed.
B Do not install this device in rooms with high moisture exposure (e.g.
bathrooms, saunas).
Function
B Observe these installation and maintenance instructions to ensure
trouble-free operation.
B Never close the blow-off line of the safety relief valve. During heating,
water may be ejected for safety reasons.
Danger from electric shock
B Ensure that all electrical work is carried out only by a licensed
electrician.
B Before removing the jacket, disconnect all poles from the solar
storage tank and secure against unintentional reconnection.
Risk of burns due to hot surfaces!
B Ensure that the piping of the solar thermal system is insulated
adequately.
Using the electric heating element
B Ensure that all electrical work is carried out only by a licensed
electrician.
B Before starting electrical work, disconnect all poles from the power
supply and secure against unintentional reconnection.
B Ensure the system has been disconnected from the power supply.
Risk of scalding at the hot water taps
B When the solar storage tank is in operation, temperatures in excess of
122 °F (50 °C) can occur. To limit the temperature at the tap, install a
thermal DHW tempering valve.
B Water heated to temperatures for clothes washing, dish washing, and
other sanitizing needs can scald and cause permanent injury.
B Children, elderly, and handicapped persons are more likely to be
permanently injured by hot water. Never leave them unattended in a
bathtub or shower. Never allow small children to use a hot water tap
or draw their own bath.
WST50 EL / WST80 EL / WST119 EL – 6 720 648 081 (2012/09)
All manuals and user guides at all-guides.com
Explanation of symbols and safety information
B If anyone using hot water in the building fits the above description, or
if state laws or local codes require certain water temperatures at hot
water taps, you must take special precautions:
– Use lowest possible temperature setting.
– To prevent scalding, install a tempering device, such as an
automatic mixing valve, at the hot water tap or the water heater.
Automatic mixing valves must be selected and installed according
to valve manufacturers recommendations and instructions.
B Water exiting from drain valves may be extremely hot. To avoid injury:
– Make sure all connections are tight.
– Direct water flow away from any person.
B Measures must be taken to protect against excessive temperature and
pressure! Installation of a temperature and pressure relief valve (TPR)
is required.
The following chart details the relationship between water temperature
and time for a scalding injury to occur. It can be used to determine the
safest water temperature for your application.
Temperature Time to produce serious burn
120 °F (48 °C) More than 5 minutes
125 °F (51 °C) 1.5 to 2 minutes
130 °F (54 °C) About 30 seconds
135 °F (57 °C) About 10 seconds
140 °F (60 °C) Less than 5 seconds
145 °F (62 °C) Less than 3 seconds
150 °F (65 °C) About 1.5 seconds
155 °F (68 °C) About 1 second
Table 2 Approximate time / temperature relationship for scalding to
occur
For operation with the electric heating element observe the following
points in order to maintain the corrosion protection and to adhere to the
guidelines for electrical safety:
B Do not operate electrically heated solar storage tanks with an inert
anode.
B Use metal connection fittings in potable water heating systems with
plastic lines.
B Use only the original electric heating element.
B When installation of the tank is complete, inspect the ground
conductor (including metal connection fittings).
Maintenance
Customers are advised to:
B Sign a maintenance and inspection contract with an authorized
contractor. Have the solar storage tank inspected and, if required,
serviced annually.
B Only use genuine spare parts.
Overheating
Should overheating occur or the solar supply fail to shut off,
B Do not turn off or disconnect electrical supply to circulator.
B Do not operate the appliance if any part has been under water.
The possible damage to a flooded appliance can be extensive and
present numerous safety hazards.
B Any appliance that has been under water must be replaced.
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