Bradford-White Corp TG-237E-N(X)A Manual De Usuario

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44 
SCALDING 
 
 
Figure 18.
 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 23.
 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.