Safety information
7
Greentherm T9800 SEO 160/199 | SECO 199 – 6 720 817 281 (2018/12)
H WARNING:
Relief valve discharge
▶ 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.
H WARNING:
Personal Injury from toxic chemicals.
▶ Toxic chemicals, such as those used
for boiler treatment, shall not be
introduced into the potable water
used for space heating.
H WARNING:
Personal Injury from toxic chemicals.
▶ 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.
2 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.
Temperature Time to severe scalding
1)
120 °F (48 °C) longer than 5 minutes
125 °F (51 °C) 1.5 to 2 minutes
130 °F (54 °C) approx. 30 seconds
135 °F (57 °C) approx. 10 seconds
140 °F (60 °C) less than 5 seconds
145 °F (62 °C) less than 3 seconds
150 °F (65 °C) approx. 1.5 seconds
155 °F (68 °C) approx. 1 second
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