EAS ELECTRIC E301WHF Manual De Instrucciones página 25

C. Installation instruction
Integrated unit connection (solar connection only available in the E301WHF model)
1. For waterway connection of this integrated unit, please refer to the following (Fig.5) "Waterway
installation diagram". On the system unit, there should be installed Three-port valve, Safety valve,
Filter, Main unit and solar collectors. Connect them to the water inlet and outlet of the unit.
2. Nearby the system unit, there should be reserved a water supply pipe and hot water pipe interface
equipped with valves, the water inlet pipe should be with filter (for cleaning).
3. The "circulation water inlet" can be connected with the water outlet of the solar collectors. The
"Circulation water outlet" can be connected with the water inlet of the solar collectors. After connections,
it can circulate heating the water in tank.
4. The working pressure of this water heater tank must ≤0.7MPa. Water inlet must connect the safety
valve, and its operation pressure is 0.7MPa, Connect another end of the safety valve to water supply
pipe. The safety valve should be connected by a small rubber pipe interlinked with atmosphere; this
pipe must not be blocked, in order to drain the water when the tank's pressure exceeds 0.7MPa.
5. Water inlet pressure should >0. 1MPa, if the pressure is lower, can connect the pressure pump on inlet
pipe to get the high water flow.
6. Ensure the water tank is full fill with water before turn on the system: First, open the valve on the water
supply inlet, then switch on either valve of the water outlet, and then you can affuse water to the tank
until the water overflow the water outlet valve. After which you can turn off the water outlet valve and
check for leakage. Make sure there is no water leaking.
NOTE: For the first time use, ensure the water tank and solar collector water pipes have been
filled with water before turn on the system.
7. For the second circulation system, it can be filled with anti-freezing liquid or other exchange media.
(In order to ensure the water tank filled with water, require a certain section of hot water outlet side
should be about 10cm higher than the water heater tank section.)
8. The water heater temperature thermal sensor was put and sealed well in a tank by the factory before
launch to market. No need to install it when installation. Besides, another thermal sensor has to be
fixed steadily in the water outlet of the solar collector. Please pay attention to keep warm and avoid
water leakage.
9. An exhaust valve (valve bonnet opened) has to be installed in the highest position of the solar collector
water outlet. When there is air mixed in the pipe or the water pressure exceed preset figure, it performs
a protective effect.
10. When water connection finished, all the connected pipes should be checked to make sure that
one-way valve filter, circulation pump and safety valve etc. are correctly connected, pipes and
connecting pieces are stable and steady.
11. In the winter cold regions, the water heater unit can not turn off the power, if the system stops running
for a long period in winter, should be drain the tank water to avoid water pipe or tank frost crack.
Meanwhile, we should strengthen or check the external pipe to prevent the pipe frozen.
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