Controller Functions - Trane Picco R3206A Manual

• b05 = compressor regulation delta cut-off = 0,2°C (default)
• b25 = compressor regulation delta cut-on = 2°C
RPM
HzMaxReg
HzMin
OFF
• The compressor shutdown is regulated by parameter b05: the compressor shutdown when is regulated by parameter b05 Tw,out >
Tw,out,set + b05
• The compressor restart when: Tw,out < (Tw,out,set - ∆Tset – b25)
EXCEPTION: if ∆T,set > 8°C, the compressors restart when the discarge probe temperatureis lower than the setpoint 10°C: Tw,out < (Tw,out,set
- 10°C)
9. DISSIPATION FAN CONTROL
The dissipation control depends on the condensing pressure in chiller mode, while it depends on the evaporation pressure in heat pump mode.
Ventilation control depends on operation of the compressor.
A pre-ventilation occurs every time the compressor switches on and off.
10.

CONTROLLER FUNCTIONS

The following is a list of the functions which can be activated in the machine controller; not all of them can be selected simultaneously.
Values other than the default values can jeopardise proper operation of the unit. If in doubt on which value to set, contact our headquarters.
10.1 ANTIFREEZE PROTECTION HEATERS (IF KA ACCESSORY IS AVAILABLE)
If the optional KA kit is present, the function is active by default.
The water antifreeze heaters on the faces of the evaporator plates even activate with the machine off (but powered) when the delivery water
temperature drops below r02 °C (default 4°C) in "heating" mode or below r03 °C (default 4°C) in "cooling" mode or when switched "OFF". The
heaters are switched off when the temperature measured by the outlet water probe exceeds r02+r06 in "heating" or r03+r06 in "cooling" or
when "OFF" (default value r06=2.0 °C).
The heating cable at the base of the machine activates when the outdoor air temperature drops below 3°C. It deactivates when the outdoor
temperature rises above 5°C.
10.2 ENABLING DOMESTIC HOT WATER PRODUCTION
To activate the domestic hot water functions, connect a probe to be placed inside the tank to terminals X17.1-X17.2 (enabled as analogue input).
The sanitary function must be enabled after positioning and connecting the temperature probe.
I/O resource - Parameter
H10
ST6 can be activated via H17
DO6 can be activated via H84
If the domestic hot water temperature is lower than its setting (set by default at 48°C, edited by accessing the menu PRG->Set->SAN) the ma-
chine activates the DHW valve and the compressor is set at maximum frequency, starting modulation one degree before the setting and switch-
ing off one degree after. When the set point is reached, the valve goes back to the rest condition and the compressor starts to regulate normally.
Tw,out,set
∆T,set + 2°C
VALUE
0 (default)
1
The remote on-off function does not disable DHW production.
2
3
The remote on-off function does not disable DHW production.
4
5
The remote on-off function does not disable DHW production.
6
6
6
Picco R32
Heat pumps inverter air/water with axial fans
Tw,out (outlet water temp.)
b05
Function
Function disabled
Function active in heating and cooling mode.
Function active in heating and cooling mode.
The remote on-off function disables DHW production.
Function active in heating mode.
Function active in heating mode.
The remote on-off function disables DHW production.
Function active in cooling mode.
Function active in cooling mode.
The remote on-off function disables DHW production.
DHW temperature probe enabling
DHW valve control
17