A.O. Smith HSE User Manual page 12

Connect one end of the discharge tube to the Multi-function Safety valve and connect the
other end to the drain.
Figure 13
Note: The Multi-function Safety valve may drip during the usage of the heater. As the water
is heated, it expands and tries to flowback through the inlet pipe but is prevented by the
presence of the non-return valve . Hence water may drip from the Multi-function Safety
valve. Therefore a Discharge tube is given from the valve tip to a nearby drain. To avoid
dripping, it is recommended to install non-return valve at a distance of atleast 40 feet away
from the inlet of the water heater.
prevent it from dripping or releasing the excess pressure inside the heater. Failure to do
so may result in damage to the water heater and injuries to the user. This will also
make the warranty null and void.
Ensure that the free end of the Discharge tube is placed over a suitable drain and away
from the users.
Multi-function Safety valve) in case excessive pressure is developed. The contents of the
discharge from the Multi-function Safety valve may be hot and may cause burns to the
users and damage nearby objects if not properly routed to a drain.
a regular basis to ensure that there are no blockages and also to remove any lime
deposits that would have been formed inside the water heater.
being operated. Ensure that the water is filled completely in the water heater before
switching it ON.
To Drain
CAUTION
9
Multi-function
Safety Valve
Discharge
tube