Bradford White TW-55X-78B-3X - Manual (Page 7)

IMD CARE AND MAINTENANCE
WARNING
SCALDING
This water heater can deliver scalding temperature water at any faucet in the system. Be
careful whenever using hot water to avoid scalding injury. By setting the thermostat on
this water heater to obtain an increased water temperature, you may create the potential
for scald injury. To protect against injury, you should install an ASSE approved
thermostatic mixing valve (a device to limit the temperature of water to protect against
scald injury via mixing hot and cold water supply) in the water system. This valve will
reduce point of discharge temperature in branch supply lines. This water heater was
shipped with an ASSE approved thermostatic mixing valve. Install this valve according to
the directions in the mixing device container. DO NOT OPERATE THIS WATER HEATER
WITHOUT AN ASSE APPROVED THERMOSTATIC MIXING DEVICE. If this water heater
was shipped without an ASSE approved thermostatic mixing valve, contact the
manufacturer.
TEMPERATURE ADJUSTMENT
Prior to adjusting the IMD, the water heater must be operational and deliver hot water within the
Water Heater Outlet Temperature Range (100°F - 180°F) (38 - 82°C). Note that the water
heater thermostat is factory set at approximately 120°F (49°C) or lower. For proper operation,
the temperature setting on the water heater may be increased. Prior to measuring the Mixed
Water Supply Temperature, allow the water heater to recover from the thermostat adjustment.
Measure the Mixed Water Supply Temperature at the nearest faucet supplied by the integrated
mixing device. A flow rate of 1 to 1.5 gpm (4 to 6 L/min) is recommended.
An accurate temperature measuring device such as a thermometer must be used to ensure that
a suitable temperature of mixed water is achieved.
Allow the water to run until a steady temperature is reached. The amount of time necessary is
dependant on the outlet's location to the water heater.
Page 7
120°F More than 5 minutes
125°F 1 ½ to 2 minutes
130°F About 30 seconds
APPROXIMATE
TIME/TEMPERATURE
RELATIONSHIP IN SCALDS
135°F About 10 seconds
140°F Less than 5 seconds
145°F Less than 3 seconds
150°F About 1 ½ seconds
155°F About 1 second
WARNING
Hotter water increases the risk of scald injury. Scalding may occur within 5 seconds at a
setting of 140°F (60°C). Water temperature over 125°F (52°C) can cause burns or death
from scalds. Children, disabled and the elderly are at highest risks of being scalded.
Please feel the water before bathing or showering.