– climate system 1 to 8
The value for the change is set in menu 1.9.2, "ex-
ternal adjustment".
• activation of one of four fan speeds.
The following five options are available:
– 1-4 is normally open (NO)
– 1 normally closed (NC)
The fan speed is activated during the time the switch
is closed. Normal speed is resumed when the switch
is opened again.
• 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, which
allows your electricity supplier to affect the indoor,
hot water and/or pool temperatures (if applicable) or
simply block the additional heat and/or compressor in
F1355 at certain times of the day (can be selected in
menu 4.1.5 after the function is activated). Activate
the function by connecting potential-free switch
functions to two inputs selected in menu 5.4
(SG Ready A and SG Ready B).
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 like the day's
tariff blocking.
– 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
savings 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 set-
table in menu 4.1.5).
(A = SG Ready A and B = SG Ready B )
External blocking of functions
An external switch function can be connected to F1355
for blocking various functions. The switch must be po-
tential-free and a closed switch results in blocking.
NOTE
Blocking entails a risk of freezing.
Functions that can be blocked:
• heating (blocking of heating demand)
• compressor (blocking of EP14 and EP15 can be com-
bined. If you want to block both (EP14) and (EP15),
this will occupy two AUX inputs).
• hot water (hot water production)
• additional heat (additional heat is blocked)
• tariff blocking (additional heat, compressor, heating,
cooling and hot water are disconnected)
31Chapter 5 | Electrical connectionsNIBE F1355
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