Closed or open switch means one of the following:
–
Blocking (A: Closed, B: Open)
“SG Ready” is active. The compressor in the heat pump
and additional heat is blocked.
–
Normal mode (A: Open, B: Open)
"SG Ready" is not active. No effect on the system.
–
Low price mode (A: Open, B: Closed)
"SG Ready" is active. The system focuses on costs sav-
ings and can for example exploit a low tariff from the
electricity supplier or over-capacity from any own power
source (effect on the system can be adjusted in the
menu 4.1.5).
–
Overcapacity mode (A: Closed, B: Closed)
"SG Ready" is active. The system is permitted to run at
full capacity at over capacity (very low price) with the
electricity supplier (effect on the system is settable in
menu 4.1.5).
(A = SG Ready A and B = SG Ready B )
•
+Adjust
Using +Adjust, the installation communicates with the
underfloor heating’s control centre* and adjusts the
heating curve and calculated supply temperature accord-
ing to the underfloor heating system’s reconnection.
Activate the climate system you want +Adjust to affect
by highlighting the function and pressing the OK button.
*Support for +Adjust required
Caution
This accessory may require a software update
in your VVM 310. The version can be checked in
the “Service info” menu 3.1. Visit
and click on the “Software” tab to download the
latest software to your installation.
Caution
In systems with both underfloor heating and ra-
diators, NIBE ECS 40/41 should be used for op-
timum operation.
External blocking of functions
An external switch function can be connected to VVM 310
for blocking various functions. The switch must be potential-
free and a closed switch results in blocking.
NOTE
Blocking entails a risk of freezing.
Functions that can be blocked:
•
hot water (hot water production). Any hot water circulation
(HWC) remains in operation.
•
heating (blocking of heating demand)
•
cooling (blocking cooling requirement)
•
internally controlled additional heat
•
compressor in heat pump EB101
•
tariff blocking (additional heat, compressor, heating,
cooling and hot water are disconnected)
Possible selections for AUX output
Caution
The relay output 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.
Indications
•
alarm
•
common alarm
•
cooling mode indication (only applies if there are cooling
accessories)
•
holiday
•
away mode for "smart home" (complement to the func-
tions in menu 4.1.7)
Control
•
circulation pump for hot water circulation
•
active cooling in a 4-pipe system
•
external heating medium pump
•
additional heat in charge circuit
NOTE
The relevant distribution box must be marked with
a warning about external voltage.
NIBE VVM 310
Chapter 5 | Electrical connections
26
