Bradford White UCG100H199 Installation & Operation Manual page 22

Alternate Space Heating Water Connections
DANGER
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.
WARNING
When the system requires water for space heating at temperatures higher than required for other means, an
ASSE approved mixing valve must be installed to temper the water for those uses in order to reduce the 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 13 and Figure 14 for installation examples. Maintain a minimum 1/2" clearance from hot water
piping to combustible materials
.
Figure 13 – Alternate Space Heating Connections
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