Heating Logic - TESY MultiThermica User's And Installer's Manual

Contact logic:
• Closed contact: the unit is switched on for heating or cooling the plant water.
• Open contact: the unit is switched off for heating or cooling the plant water
If the domestic hot water function is active, this function has priority.

TA from Modbus Supervisor
Function Logic:
The room thermostat is enabled by Modbus Supervisor and controlled by the Modbus register with address 117.
Logic of the register:
The call is managed by the Modbus Supervisor.
• Value 1: the unit is switched on for heating or cooling the plant water.
• Value 0: the unit is switched off for heating or cooling the plant water.
If the domestic hot water function is active, this function has priority.

Enabling:
Use must be enabled by parameter "ATM"
4�2�5 Heating logic
A
Frequency
B
Plant water temperature
A
max
min
Min and max depend on the logic corresponding to the active mode (heating) and the configuration of the unit.

PT1, 5, 6: Plant temperature probe. This depends on the setting of "SRI"
p. 18
"ISP" : Setpoint WINTER (Heating)
If the external climate control is active, the reference setpoint is not "ISP"

View chapter "Dynamic set adjustment"
IHY: WINTER hysteresis (2.5 °C)
The function is inhibited by the simultaneous request for domestic hot water (which higher priority) but the priority can be

reversed for 60 minutes ("FH"
The temperature in the separator may not exceed 60 °C.

During the start-up phase, the compressor reaches the maximum frequency in 3 minutes.

p. 22
.
C
ISP - IHY
p. 33
.
p. 21
) by pressing the Fast Heating button
FUnCTIon SETTInG InDooR UnIT WITHoUT InTEGRA TED WA TER T AnK
INDOOR UNIT WITHOUT INTEGRATED WATER TANK
C
Additive control logic
ISP PT1 o PT5 o PT6
p. 21
p. 18
, but the dynamically calculated setpoint.
B
27