Bradford White TGHE-199E-N - Manual (Page 43)

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SCALDING
Figure 17. Scalding Warning.
This water heater can deliver scalding temperature water at any faucet in the system. Be careful
whenever using hot water to avoid scalding injury. Certain appliances, such as dishwashers and
automatic clothes washers may require increased water temperature. By setting the thermostat on this
water heater to obtain the increased temperature water required by these appliances, you may create the
potential for scald injury. To protect against injury, you should install a tempering valve in the water
system. This valve will reduce point of discharge temperature by mixing cold and hot water in branch
supply lines. Such valves are available from the local plumbing supplier.
CAUTION
Test the temperature of the water with your elbow before placing a child in the bath or shower. Do not
leave a child or an infirm person in the bath unsupervised.
The following chart details the relationship of water temperature and time with regard to scald injury and
may be used as a guide in determining the safest water temperature for your applications.
Table 22. Relationship Between Exposure to Hot Water and When a Scald Results.
APPROXIMATE TIME/TEMPERATURE
RELATIONSHIPS IN SCALDS
120°F (49 C) More than 5 minutes
125°F (52 C) 1½ 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 (63 C) Less than 3 seconds
150°F (66 C) About 1½ seconds
155°F (68 C) About 1 second
FIRST AID FOR SCALDS
1. Apply cold water to burned area for 30 minutes to reduce the heat in the skin and prevent deeper
burning. Never use butter, oils, or ointment to cover the burn. They may retain the heat.
2. Use a blanket to keep the scalded person warm.
3. Seek medical advice.