HTP Everlast EV-12, Установка Запуск Техническое обслуживание Запасные части, Страница: 8 / 18

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LP-04 REV. 4.15.14
C. FILLING THE HEATER
When filling the water heater, open a hot water tap to release air in the tank and piping. Failure to do so could lead to improper water
heater operation.
Make certain that the field installed drain valve is completely closed. Open the shut-
off valve in the cold water supply line. Open the hot water faucets to allow air to vent
from the heater and piping. Allow sufficient time for the heater to completely fill with
water.
D. SCALDING
This heater can deliver scalding water. 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
heater to obtain the increased water temperature required by these appliances, you
may create the potential for scald injury.
To protect against injury, you should install a mixing 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 your local plumbing supplier.
Table 2 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.
A temperature limiting or mixing valve is not entirely necessary, but recommended in installations servicing disabled or elderly persons,
or children. Take extreme caution to avoid scalding when temperature limiting or mixing valves are not used.
E. POTABLE EXPANSION TANK
A potable hot water expansion tank is required to offset heated water expansion. If there is a back flow preventer or any other type of
no return or check valve on the system, a thermal expansion tank is mandatory. The expansion tank must be sized for the entire water
volume of the hot water system. A weeping relief valve indicates the need for an expansion tank.
Table 2
APPROXIMATE TIME / TEMPERATURE RELATIONSHIPS IN SCALDS
120
o
F More than 5 minutes
125
o
F 1 ½ to 2 minutes
130
o
F About 30 seconds
135
o
F About 10 seconds
140
o
F Less than 5 seconds
145
o
F Less than 3 seconds
150
o
F About 1 ½ seconds
155
o
F About 1 second