23.04.2014
12 / 21
Parameters of heater E and heater P
The first parameter shown is activation/deactivation of connected electric heater (below, to the left). YES will start to pulsate
after pressing OK. The setting can be changed to NO using an arrow. Press OK to approve, or ESC to cancel without saving
(the parameter returns to initial value). When no value pulsates, it is possible to move using arrows to another parameter, which
allows setting the temperature of heating with a heater while heat pump is on (below, to the right). The heater will be heating up
the tank with heat pump to that value, provided that heat pump independent operation priority is not activated. It is important to
ensure that this temperature setting is not higher than the temperature, to which heat pump keeps heating - otherwise heat
pump will never be able to work, because heater will keep the required water parameter. The heater works at constant
hysteresis of 2°C (drop of water temperature, which restarts heat pump). This solution is frequently called the PARTY mode - if
more people than usually are to use utility water, it is worth activating simultaneous operation of heater or other heating source,
so as to ensure the comfort of suitable hot water volume.
Another parameter in heater settings is the required HUW temp., while heat pump is off (below, to the left). If heat pump enters
an alarm mode (conditions, which may disturb correct operation, or there is too low min. temperature of air supplied to the heat
pump), or it is switched off manually from the controller level, then heater may keep heating up the tank to higher temperatures,
because in this case heating costs do not depend on the temperature of water being heated up. If we have a system with a
suspended or solid fuel fired boiler and we set heating priority to either of them - the heater will not switch on.
Another parameter is heater stoppage while heat pump operates. At the moment, when the value is set to YES, the heater will
not activate if heat pump operates or is waiting for restart of work (that is drop of temperature in the tank, which will restart the
heat pump).
The last parameter in heater settings is its stoppage while
boiler D operates. If we have selected a diagram, which
supports suspended (automatic) boiler, then automatic
boiler will switch on as the first unit at the moment when
heat pump cannot work (alarm states, low COP, or the
pump is switched off manually from the controller).
Circulating pump parameters
Circulating pump operation depends on two preset parameters. The first is minimum circulating pump activation temperature
depending on temperature at the tank top (temperature sensor T2). This value may be set between 20 and 60°C. Factory
setting is 35°C.
The second parameter involves setting of circulating pump operation mode. We have the choice of continuous operation mode -
circulating pump will work all the time according to time settings, or intermittent operation mode - in this case circulating pump
will be working in the regime 5 min. operation/10 min. stop, according to time settings.
