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TH-2xxSx1 with EC motor
• 4 PIPE HEATING/COOLING mode (
M01
=8)
The mode is selected automatically in relation to the operating temperature (see
“11. Regulation sensor(s)” page 24
).
If the operating temperature is greater than
I09
+ (
I21
: 2) + I19, the icon “
COOL
“ turns on to indicate that cooling mode
is active.
If the operating temperature is lower than
I09
- (
I21
: 2) -
I18
, the icon “
HEAT
“ turns on to indicate that heating mode is
active.
ON
OFF
Temp.
HH
(
I18
)
Outputs
BS4P
(
I09
)
ECM speed 1
Temp.
Fan
ECM speed 3
HC
(
I19
)
DZ
(
I21
)
DO2
DO1
AO1
FB
(
I27
< 100%)
I27 = 100%
FB
(
I27
< 100%)
I27 = 100%
AO1
If the operating temperature drops below
I09
- (
I21
: 2) -
I18
, the heating stage starts and the fan starts at speed 1 after
startup delay
I36
. The speed increases as the operating temperature drops, reaching speed 3 when the operating tem-
perature falls below
I09
- (
I21
: 2) -
I18
- [
I27
x (FB -
I18
)].
Icon turns on. If
M02
=1, indicating the presence of the electric resistance, icon
turns on.
If the operating temperature increases to
I09
- (
I21
: 2) -
I18
the speed remains constant at speed 1 until the operating
temperature exceeds
I09
- (
I21
: 2).
Icon turns off, as does icon
(if
M02
=1).
If
I28
=0 or 2, the fan stops after delay
I35
(if
M02
=1) or the fan stops if
M02
=0.
If
I28
=1 or 3, the fan stays on at speed 1.
If
I28
=4 or 6, the fan stays on at speed selected manually.
If the operating temperature rises above
I09
+ (
I21
: 2) +
I19
, the cooling stage is activated and fan starts at speed 1,
after startup delay
I36
. The speed increases as the operating temperature increases, reaching speed 3 when the operat-
ing temperature exceeds
I09
+ (
I21
: 2) +
I19
+ [
I27
x (FB -
I19
)].
Icon turns on.
If the operating temperature falls to
I09
+ (
I21
: 2) +
I19,
the fan stays at speed 1 until the operating temperature drops
below
I09
+ (
I21
: 2).
Then icon turns off and cooling stage is deactivated.
If
I28
=0 or 3, the fan stops,
If
I28
=1 or 2, the fan stays on at speed 1.
If
I28
=4 or 5, the fan stays on at speed selected manually.
Wiring diagram
N L
DI
1
GN
D
DI
2
AI1 GN
D
AI2
DO
3
GN
D
AI3 GN
D
T1
T2
S1
S2
T3
CO
M
N
L
M1
0..
10
V
~
L
N
+
-
V1
R1
DO
1
DO
2
V2
AO1 GN
D
230V
ac
A +
B
-
MODBUS RTU
(TH-xMxxx)