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Speed 1 is activated and deactivated together with the heating output.
The hysteresis of speeds 2 and 3 is calculated automatically at 20% of the FB band (see
“3 speed on-off motor speed
control logic with on/off outputs” page 29
).
Example: if
I18
=0.5°C, FB=2°C, the hysteresis of speeds 2 and 3 is 0.4°C.
N.B.: if the minimum thermostat function is active, the thermostat itself must be closed when the valve is in regulation,
otherwise the fan will not start. If the electric resistance is on, the fan starts immediately regardless of the position of the
minimum thermostat,
- parameter
I25
is not used.
Wiring diagram
V1
R1
N L
DI
1
GN
D
DI
2
AI1 GN
D
AI2
DO
1
DO
3
DO
4
GN
D
AI3 GN
D
T1
T2
S1
S2
T3
M1
I
II
III
DO
5
CO
M
MODBUS RTU
(TH-xMxxx)
N
L
230V
ac
A +
B
-
