Security Characteristics
Instructions for use
7
8
SECURITY VALVE
This electric water heater has a Single-directional safety valve. It must be installed
at the water inlet. When the tank's pressure is over 0.75 MPa, this valve will
automatically release the pressure to protect the Water Heater against high inlet
pressure. It may cause water drops to fall at the pressure relieving vent. Under any
conditions, this pressure relieving vent should not be blocked or obstructed
(Diagram 1).
NOTE
It is possible that the inner pressure relieving Safety Valve’s exit vent is not allowing
water to exit, or else, during heating, the inlet pipe's cover area under the Safety
Valve is becoming hot. This indicates that it is internally-draining the pressure. To
empty the tank, first close the inlet valve and open the outlet valve. Then open the
fixed screw nail on the Security Valve with tools. Lift up the water drainage spanner
to horizontal position and let the water in the tank to naturally flow out (Diagram 2).
Diagram 1
0.75MPa
Pressure-leakage
Mouth
Fixed Screw Nail
Diagram 2
Water- drainage Spanner
Water-drainage Position
0.75MPa
A. Using the heater for the first time:
1. Do not switch “ON” the power supply before filling the heater with water.
2. Leave the hot water tap open. Now fill the heater by opening the control valve
at the inlet.
3. When the heater is full, water will start flowing through the hot water tap. Close
the hot water tap.
4. Now the heater will always have water inside. Water drawn will be replaced by
water from the over head tank.
5. Always keep the inlet control valve open.
6. Now switch “ON” the power supply to the heater.
B. Using the heater regularly:
1. Always keep the inlet valve open so that water drawn from the hot water tap is
automatically replaced from the mains.
2. When the water reaches the required temperature the thermostat will cut-off the
power supply automatically.
3. The thermostat setting can be changed by the user to suit outlet water tempera
-
ture (DO NOT TAMPER THE SETTING FREQUENTLY)
4. Lowering the setting of the thermostat will give a lower hot water temperature;
increasing the setting will give a higher hot water temperature.
5. Initially it may take a long time for the water to get hot, it is recommended to
switch “ON” the water heater at least an hour before you want to use it.
6. If you require hot water early in the morning, switch “ON” previous night itself,
thermostat would cut-off the power automatically, when the water reaches the
set temperature.
7. The heater can also be kept “ON” always, if required since the heater is
completely insulated, the water will remain hot. The thermostat will cut-in and
cut-off automatically to keep the water at constant temperature. In this way you
can always get hot water.