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4.3.11.3 - Description of the User 1 Configuration sub-menu
0 USEr MEnu - When selected this item authorises return to the previous menu.
1 [1] 0/1/2/3
0 = automatic; 1 = circuit A; 2 = circuit B; 3 = circuit C
2 0/1 -
0 = balanced loading: compressors belonging to dierent circuits are started alternatively.
1 = priority loading: all compressors in the same circuit are started, before starting those in another circuit.
3 YES/no - .
Yes = ramp enabled
No = ramp disabled
This conguration enables the ramp to be activated for heating or cooling (depending on conguration). This item refers to the
authorised low or high temperature rates, controlled by the water heat exchanger (°C/min). Ramp setting value can be congured
in the Setpoint menu.
4 1 to 15 min . This value is reinitialised after power-up or when both circuits are halted by local, remote or CCN command.
No compressor will be started up until this pause has expired. However, the evaporator pump command will be activated
immediately. The safety lockout loop will not be checked until the pause has expired.
5 0/1/2/3/4 -
0 = no pump
1 = one pump only
2 = two pumps with auto rotation
3 = pump #1 manual select
4 = pump #2 manual select
If the auto sequence is selected, the pump change-over occurs when the rotation delay is elapsed. If the manual sequence is
selected then, the selected pump is used in priority. Change-over occurs if one pump fails.
6 [1] 24 to 3000 hours . Displayed if auto pump sequence is selected. This parameter is used for pump auto-rotation: the
control tries to limit the pump run time dierence to the pump changeover delay value. Change-over between pumps occurs
when this dierence becomes greater than the congured pump changeover delay.
7 [1] «YES/no» -
Displayed if the unit controls a water pump. If this parameter is validated, the pump will be shut down when the standby mode is
active (in automatic heating/cooling changeover). It automatically restarts in heating or cooling mode.
8 [1] «YES/no» - Activation of the water ow control verication, when the pump is stopped.
Prevents the water ow alarm, when the pump has stopped and when the user/water ow rate safety loop is closed.
9 0/1/2/3/4 - .
0 = reset not selected
1 = reset based on outdoor temperature
2 = reset based on return water temperature
3 = reset based on 4-20 mA input (of the energy management option is used)
4 = reset based on room temperature (if the energy management option is used and the room temperature sensor is installed)
10 0/1/2/3 - Only displayed in heat pump mode.
0 = reset not selected
1 = reset based on outdoor temperature
2 = reset based on return water temperature
3 = reset based on 4-20 mA input (of the energy management option is used)
11 «YES/no» -
12 0/1/2 -
0 = no demand limit
1 = demand limit generated by the contact inputs
2 = demand limit generated by the 0-20 mA input
13 [1] nn mA Maximum demand limit signal. Only displayed if the energy management option is used.
14 [1] nn mA Minimum demand limit signal. Only displayed if the energy management option is used.
15 [1] nnn °C Boiler threshold. Outdoor air temperature limit; if the temperature is lower, the heat pump is stopped or only the boiler is used for
hot water production. Only for heat pumps controlling an additional boiler.
16 [1] 0 to 60 minutes Electric heating stage operation schedule. Permits conguration of a start-up delay after unit start-up during which the electric
heater stages are not allowed to start.
17 [1] «YES/no» - In this conguration the last electric heating stage is only activated in the safety mode (in case of
a unit fault that prevents unit operation in heat pump mode). The other electric heating stages operate normally.
18 [1] «YES/no» - If a circuit switches to defrost mode, the electric heater stages are allowed to start up
immediately.
19 [1] -20 to 0 °C If the outside temperature is below this value, no compressor is
allowed to start.
[1] This item shall be masked when not used.
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