AC•THOR
®
/ AC•THOR
®
9s Operating instructions, version a0020000 21
Explanation
In this operating mode, an electric heating element is supplied linearly with excess PV energy. In
addition, the AC•THOR can send out a temperature-dependent PWM signal. This can for instance
control the speed of a pump.
This function was tested by my-PV with the pump type Wilo Yonos Para PWM1 and PWM2. For
PWM2, the setting command xxx.xxx.xxx.xxx.xxx/setup.html?pwmt=2 must be entered in the URL of
the webinterface. For other pumps, the function cannot be certified.
In this operating mode, two my-PV temperature probes are required!
Optionally, the AC•THOR can also take over guaranteeing the hot water temperature. For this, a
third my-PV temperature sensor is to be used.
Note: A temperature sensor is always included with the AC•THOR, other sensors must be purchased
separately.
Data my-PV
temperature sensors
Current power output
Status PWM
Output signal
Single-Boost
Starts a once-only boost
backup mode
(button only appears if boost
backup is activated)
Specific settings for operating mode M7
Hot water 1 temperatures
Adjustable is the maximum permitted temperature to be reached at the my-PV temperature sensor
(factory setting = 60 °C). This has nothing to do with a bimetal thermostat which may be installed!
If the cut out temperature of an immersion heating element with a bimetal thermostat is set
too low, the AC•THOR may possibly be unable to reach the desired temperature!
If the optional automatic temperature boost backup is shown "On" in the window on the right
(factory setting "Off") or the relay output has been selected, a minimum temperature can then be
set (factory setting 50 °C). It cannot be set higher than the maximum temperature.
Automatic temperature boost backup "On":
The AC•THOR can ensure a minimum temperature at the my-PV temperature sensor through the
immersion heating element connected. This is supplied with maximum power.
Relay output:
Alternatively, the minimum temperature can be maintained by enabling an external heat source.
Enablement is by means of a potential-free contact. For details of wiring the potential-free contacts,
please refer to the assembly instructions in the chapter "Connections".
TIP for AC•THOR (not AC•THOR 9s):
If as an external heat source a second immersion heating element (maximum 3 kW)
is used, it can be suitably connected up for 6 kW operation. This differs from the 6
kW operating mode in that here the second immersion heating element is only used
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