Bradford White EF120T Installation & Operation Manual With Troubleshooting Manual page 16

APPROXIMATE TIME/TEMPERATURE RELATIONSHIPS IN SCALDS
Alternate Space Heating Water Connections
Toxic chemicals, such as those used for boiler treatment, must NOT be introduced into potable water used
for space heating.
This water heater must NOT be connected to an existing heating system or component(s) previously used
with a non-potable water heating appliance.
All piping components connected to this water heater for space heating applications must be suitable for use
with potable water.
This water heater has combination water/space heating connections and is NOT intended to be used in space
heating only applications.
When the system requires water for space heating at temperatures higher than required for other uses, a
means such as an ASSE approved mixing valve should be installed to temper the water for those uses in
order to reduce scald hazard potential.
Failure to properly pipe this water heater may result in improper operation and damage to the water heater or
structure.
Oxygen contamination of this water heater will cause corrosion of iron and steel components and can lead to
water heater failure.
Connect the system supply and return piping to the water heater.
Refer to Figure 9 and Figure 10 for installation
examples. Maintain a minimum 1/2 in (1.3 cm)
clearance from hot water piping to combustible
materials.
Table 2 – Approximate Time/Temperature Scald Chart
120°F (49°C)
125°F (52°C)
130°F (54°C)
135°F (57°C)
140°F (60°C)
145°F (63°C)
150°F (66°C)
155°F (68°C)
Figure 9 – Alternate
Space Heating
Connections
More than 5 minutes
1½ to 2 minutes
About 30 seconds
About 10 seconds
Less than 5 seconds
Less than 3 seconds
About 1½ seconds
About 1 second
DANGER
WARNING
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