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Safety Information - Bosch Greentherm 9800 SE 160/199 Manual

Indoor residential and comme rcial tankless water heaters
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6 | Safety information

NOTICE: Appliance malfunction!
▶ If power is lost while appliance is
operating. Turn off both water and
power for 15 seconds to reset device.
WARNING: Risk of scalding and property
▶ Precautions must be taken prior to
manually operating the relief valve to
avoid contact with hot water discharged
from the relief valve and to prevent
water damage.
NOTICE: Appliance damage!
▶ Label all wires prior to disconnection
when servicing controls. Wiring errors
can result in improper and dangerous
operation. Verify proper operation after
WARNING: System damage!
▶ If a relief valve discharges periodically,
this may be due to thermal expansion in
a closed water supply system. Contact
the water supplier or local plumbing
inspector on how to correct this
situation. Do not plug the relief valve.
WARNING: Personal Injury from toxic
▶ Toxic chemicals, such as those used for
boiler treatment, shall not be introduced
into the potable water used for space
WARNING: Personal Injury from toxic
▶ A water heater which will be used to
supply potable water shall not be
connected to any heating system or
component(s) previously used with a
nonpotable water heating appliance.
6 720 816 815 (2016/10)
Safety information
Fig. 1
The chart below shows the relationship between water
temperature and time until there is a risk of scalding. It can be
used as the basis for determining the safest water temperature
for your application.
120 °F (48 °C)
125 °F (51 °C)
130 °F (54 °C)
135 °F (57 °C)
140 °F (60 °C)
145 °F (62 °C)
150 °F (65 °C)
155 °F (68 °C)
Table 2
Approximate time-temperature relationship until
there is a risk of scalding
Greentherm 9800 SE 160/199 | SEC 199
Time to severe scalding
longer than 5 minutes
1.5 to 2 minutes
approx. 30 seconds
approx. 10 seconds
less than 5 seconds
less than 3 seconds
approx. 1.5 seconds
approx. 1 second



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