In the mode Set point program, the room controller has no influence.
Smart grid 1/ PV contact
A sensor input can be set here, which can be used as Smart grid terminal 1 for interference by the energy supplier or as a PV contact
for a photovoltaic system. This sensor is observed to "short circuit" (PV-Contact closed). If the PV-Contact is closed, the mode of this
function is changed to "comfort" and operated at the comfort temperature set for the comfort function. This also applies in the case that
the mode "comfort" of the function currently has no time release.
Information about the operation and the connection of PV-contact, refer to the technical description of your PV system.
Smart grid 2
Smart Grid Terminal 2 for influence by the energy supplier. The inputs are checked for open and short-circuit. The combination of
inputs 1 and 2 determines how the heating circuit is influenced: 1= short-circuit, 0 = open Terminal 1: Terminal 2
0:0 = Set heating circuit modes to "Off".
1:0 = Set heating circuit modes to" Eco
0:1 = Set heating circuit mode according to time and room controller settings
1:1= Set heating circuit mode to "Comfort" mode
Settings Domestic Hot Water (DHW)
By no means does the controller replace the safety appliances on site!
Operating mode
The DHW heating can be set here. “Auto” activates the DHW heating according to the time program, with “off” the DHW heating is
turned off.
Hot water minimum
Minimum DHW temperature. If the set temperature at the DHW sensor is undeshot outside of the set times, the DHW charge and heat
request will be turned on.
DHW reference
Minimum DHW temperature time program. If the set temperature at the DHW sensor is undershot and the DHW charge is approved for
the time, the DHW charge and the heat request will be turned on.
The request only works if an energy source (burner, compressor, solid chamber) is activated as an additional function and
if this source is set for the DHW request.
DHW comfort
DHW temperature for comfort time. The set temperature considered as minimum temperature during the set comfort time. If the tem-
perature on DHW-sensor is below the value set here is during the DHW comfort periods, the DHW heating is started, until DHW com-
fort + hysteresis is achieved.
DHW hysteresis
DHW hysteresis. The DHW charge and heat request are shut down if the temperature at the DHW sensor reaches the value set under
“See " Hot water minimum " on page 37“ / “See " DHW reference " on page 37“ plus the heating set here.
Buffer DHW load
DHW load from the buffer. The DHW load from the buffer storage is turned on if the temperature on the buffer sensor is at least 8 °C
warmer than at the DHW sensor. The DHW load from the buffer storage is shut down if the temperautre at the buffer sensor is only 4
°C warmer than at the DHW sensor or if the temperature at the DHW sensor has reached the value set under See " Hot water min-
imum " on page 37 or See " DHW reference " on page 37.
DHW priority
Preferred DHW charge. If this function is activated, the reference flow temperature during a DHW heating will be set to the minimum
flow temperature See " Min. Flow " on page 34 so that the mixer moves to the “closed” position.
DHW sensor
The sensor used as a domestic hot water sensor.
37
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