Owner`s manual

ENGLISH
Conergy AS
Owners Manual
6
1 Owners Information
Detecting availability of useful solar energy in the solar collectors. When the temperature of the
solar collector is 6°C higher than the storage tank temperature, the circulation pump is initiated.
If the difference in temperature falls to less than 4°C the circulation pump is stopped.
Controlling maximum storage tank temperature. If the storage tank temperature reaches 70°C,
the circulation pump is stopped to prevent excessive temperatures in the storage tank.
Collector maximum temperature limiting. If for any reason the collector temperature reaches
200°C, circulation is stopped to prevent potential damage to the system components.
Collector Temperature control. During periods when the circulation pump is idle, and if the
water temperature falls below 60°C and will only consume electricity until the water temperature
is increased to 60°C then turns off again.
For gas AES systems a continuous flow gas water heater is fitted adjacent the storage tank in
series with the hot water supply from the storage tank and the household hot water pipe work
system. As the hot water from the solar storage tank passes through the gas heater its temperature
is automatically monitored by the gas heater. If the temperature is below 60°C the gas heater
will add the energy required to deliver hot water of at least 60°C. When the water storage tank
temperature is above 60°C the gas heater will not ignite.
Circulation pump
The circulation pump is a simple device used to circulate the water in the collector circuit. This, in
turn, enables solar energy from the collectors to be transferred to the storage tank location. The
pump consumes only a very small amount of electrical energy (less than 28 watts) to perform this
task. The circulation pump has an integral ‘non-return valve’ to prevent solar energy from reverse
cycling back through the storage tank to the collectors at night.
The electronic control device used to control the circulation pump has a complex set of activities.
It is the brain of the system and ensures optimum system efficiency and safety. The basic functions
are:
1.4.3
1.
2.
3.
4.
Gas AES System