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We reserve the right to make technical changes.
83052300eUK © ait-deutschland GmbH
2.0
2hg1 type Type of the second heat generator 1
No = no 2 hg connected, system works
monovalently
El. Rod = Heating rod connected as 2 hg, system
works mono-energetically
Boiler = Boiler connected as 2 hg, system works
bivalently The “boiler” setting only requires one
charger mixer as the boiler is switched on con-
tinuously if required and the temperature is not
controlled by the 2nd heat gen. 1 output.
Thermal = Thermal (gas boiler) connected as 2 hg, is
activated as heating rod, but can be
released during electrical supply off-time
2hg1 fct Function of the second heat generator 1
No = no 2 hg connected, system works
monovalently
Heating = 2 hg located as a heating rod in the
buffer tank
HW a SW (=Heating and domestic hot water) =
2 hg located hydraulically in the ow of
the heat pump. 2 hg is own through
if the heating or domestic hot
water circulation pump is running
ATTENTION
If integrated circulating heaters are installed in the
ow of the heat pump, Ht a. DHW must be set as a
function.
NOTICE
For each 2 hg, the type and function must be set.
2hg2 type Type of the second heat generator 2
No = no 2hg2 connected, the outlet has the function
“collective fault”
El. Rod = 2hg2 is a heating rod, the system is
powered mono-energetically
2hg2 fct. Function of the second heat generator 2
No = no 2hg2 connected, the outlet has the function
“collective fault”
Heating = 2hg2 located as a heating rod in the
buffer tank
SW (= domestic hot water) =
2hg2 located in the domestic hot water tank
ATTENTION
If the 2hg2 is at “No”, the output has the function
“collective fault”. No 2 hg may be connected to this
output.
Output cycles for self-resetting fault. “Continuous
On” at fault.
ATTENTION
Only the following 2hg1 / 2hg2 combinations are
permissible:
2hg1 fct 2hg2 fct Release
Heating Heating
Ht a. DHW Heating
Heating S W.
No S W.
No Heating
Ht a. DHW S W.
Error Error
with 2hg = in the event of a fault in the heat pump,
connected 2 hgs are energised according to require-
ments (HW + SW)
no 2hg = in the event of a fault in the heat pump,
connected 2 hgs are only energised if the return
temperature < 15 °C (antifreeze); (only heating)
Service water 1 Domestic hot water 1
Sensor = Domestic hot water preparation is initiated
or terminated via a sensor on the domestic hot
water tank
Thermal = Domestic hot water is initiated or termi-
nated via a thermostat on the domestic hot water
tank
NOTICE
Connect domestic hot water thermostat on the
same terminals as the domestic hot water sensor
(low voltage). The domestic hot water thermostat
must be suitable for low voltage (oating contact).
Thermostat closed (= signal On) = Domestic hot
water requirement.
Service water 2 Domestic hot water 2
CP = Setting CP means circulation pump.
For the corresponding settings, please refer to the
description of the circulation pump in the operat-
ing manual intended for end customers, found in
program section “Domestic hot water” under the
section entitled “Circulation”.
h.w.CP = Setting h.w.CP means that the CP output
will be active during domestic hot water prepara-
tion and switch off 30 seconds after domestic hot
water preparation is complete.
Service water 3 Domestic hot water 3
with CP = Additional circulation pump runs during
domestic hot water preparation
wo. CP = Additional circulation pump does not run
during domestic hot water preparation
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