Carrier 30RQ Operation And Maintenance Instructions page 22

4.3.11.3 - Description of the User 1 Configuration sub-menu
User 1 Configuration sub-menu
Item Format Units
0 USEr MEnu -
1 [1] 0/1/2/3
2 0/1 -
3 YES/no -
4 1 to 15 min
5 0/1/2/3/4 -
6 [1] 24 to 3000 hours
7 [1] «YES/no» -
8 [1] «YES/no» -
9 0/1/2/3/4 -
10 0/1/2/3 -
11 «YES/no» -
12 0/1/2 -
13 [1] nn mA
14 [1] nn mA
15 [1] nnn °C
16 [1] 0 to 60 minutes
17 [1] «YES/no» -
18 [1] «YES/no» -
19 [1] -20 to 0 °C
[1] This item shall be masked when not used.
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Comments
When selected this item authorises return to the previous menu.
Selection of lead circuit.
0 = automatic; 1 = circuit A; 2 = circuit B; 3 = circuit C
Load sequence selection.
0 = balanced loading: compressors belonging to different circuits are started alternatively.
1 = priority loading: all compressors in the same circuit are started, before starting those in another circuit.
Ramp loading select.
Yes = ramp enabled
No = ramp disabled
This configuration enables the ramp to be activated for heating or cooling (depending on configuration). This item refers to the
authorised low or high temperature rates, controlled by the water heat exchanger (°C/min). Ramp setting value can be configured
in the Setpoint menu.
Delay at start-up. 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.
Pump sequence select
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.
Pump changeover delay. Displayed if auto pump sequence is selected. This parameter is used for pump auto-rotation: the
control tries to limit the pump run time difference to the pump changeover delay value. Change-over between pumps occurs
when this difference becomes greater than the configured pump changeover delay.
Pump shutdown in standby mode
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.
Activation of the water flow control verification, when the pump is stopped.
Prevents the water flow alarm, when the pump has stopped and when the user/water flow rate safety loop is closed.
Cooling setpoint reset select.
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)
Heating setpoint reset select. 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)
Automatic cooling/heating changeover select.
Demand limit
0 = no demand limit
1 = demand limit generated by the contact inputs
2 = demand limit generated by the 0-20 mA input
Maximum demand limit signal. Only displayed if the energy management option is used.
Minimum demand limit signal. Only displayed if the energy management option is used.
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.
Electric heating stage operation schedule. Permits configuration of a start-up delay after unit start-up during which the electric
heater stages are not allowed to start.
Electric heating safety stage. In this configuration 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.
Electric heater stages in defrost mode. If a circuit switches to defrost mode, the electric heater stages are allowed to start up
immediately.
Minimum outside temperature threshold in heating mode. If the outside temperature is below this value, no compressor is
allowed to start.