TIP
Some of the following functions can also be
activated and scheduled via menu settings.
Selectable inputs
Selectable inputs on the input board (AA3) for these
functions are:
AA3-X6:9-10AUX1
AA3-X6:11-12AUX2
AA3-X6:13-14AUX3
AA3-X6:15-16AUX4
AA3-X6:17-18AUX5
SMO Externt
9
10
11
12
13
14
15
16
B
A
The example above uses the inputs AUX1 (X6:9-10) and AUX2 (X6:11-
12) on the input board (AA3).
Selectable output
A selectable output is AA3-X7.
The output is a potential-free switching relay.
The picture shows the relay in the alarm position.
When switch (SF1) is in the " " or " " position the relay
is in the alarm position.
Caution
The relay outputs may be subjected to a max
load of 2 A at resistive load (230V AC).
TIP
The AXC accessory is required if more than
one function is to be connected to the AUX
output.
Possible selection for AUX inputs
Temperature sensor
Temperature sensor can be connected to VVM 500.
Available options are:
• cooling/heating/hot water, determines when it is time
to switch between cooling, heating and hot water
mode (selectable when the air/water heat pump is
permitted to produce cooling).
• supply temperature sensor for cooling (BT64) (used
when “active cooling in 4-pipe system” has been ac-
tivated in the output AA3-X7)
Monitor
Available options are:
• alarm from external units. The alarm is connected to
the control, which means that the malfunction is
presented as an information message in the display.
Potential-free signal of type NO or NC.
• stove monitor. (A thermostat that is connected to the
chimney. When the negative pressure is too low and
the thermostat is connected, the fans in ERS (NC) are
switched off.
• pressure switch for climate system (NC).
External activation of functions
An external switch function can be connected to
VVM 500 to activate various functions. The function is
activated during the time the switch is closed.
Possible functions that can be activated:
• hot water comfort mode “temporary lux”
• hot water comfort mode “economy”
• “external adjustment”
When the switch is closed, the temperature changes
in °C (if the room sensor is connected and activated).
If a room sensor is not connected or not activated,
the desired change of “temperature” (heating curve
offset) is set with the number of steps selected. The
value is adjustable between -10 and +10. External
adjustment of climate systems 2 to 8 requires ac-
cessories.
– climate system 1 to 8
The value for the change is set in menu 1.9.2, "ex-
ternal adjustment".
• SG ready
Caution
This function can only be used in mains net-
works that support the "SG Ready" standard.
"SG Ready" requires two AUX inputs.
"SG Ready" is a smart form of tariff control, through
which your electricity supplier can affect the indoor,
hot water and/or pool temperatures (if applicable) or
simply block the additional heat and/or compressor in
the heat pump at certain times of the day (can be se-
29Chapter 5 | Electrical connectionsNIBE VVM 500
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