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TH-2xxSx1 with EC motor
• 4 PIPE HEATING/COOLING mode + ELECTRIC RESISTANCE (
M01
=9)
In this configuration, you can use standard EC motors, without supplementary relays (
M14
=1).
When 4 pipe heating/c electric resistance is chosen, parameter
M02
is automatically checked (this parameter
determines the stage with which the electric resistance is combined).
If
M02
=0 (electric resistance disabled), it is automatically forced to 2 (electric resistance assigned to second stage). This
value can be edited.
-
M01
=1 assigns the electric resistance to stage 1.
-
M01
=2 assigns the electric resistance to stage 2.
-
M01
=3 assigns the electric resistance to stages 1 and 2 both.
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
)
DO3
DO1
HH
(
I18
)
DIFF
(
I20
)
DO2
AO1
AO1
FB
(
I27
< 100%)
I27 = 100%
FB
(
I27
< 100%)
I27 = 100%
If the operating temperature drops below
I09
- (
I21
: 2) -
I18
, relay
DO1
is activated.
Icon turns on if
M02
=2 and icons and
both turn on if
M02
=1 or 3.
The fan (output
AO1
) starts at speed 1, after the startup delay
I36
, if
M02
=2.
The fan (output
AO1
) starts immediately at speed 1, regardless of the startup delay, if
M02
=1 or 3.
The speed then increases as the operating temperature drops, and arrives at speed 3 when the operating temperature
drops below
I09
- (
I21
: 2) -
I18
- [
I27
x (FB -
I18
)].
If the temperature drops below
I09
- (
I21
: 2) -
I20
-
I18
, stage 2 (output
DO2
) is activated
If the temperature rises above
I09
- (
I21
: 2) -
I20
, stage 2 is deactivated. If
M02
=2, icon
turns off.
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 , or icons and
(if
M02
=1 or 3) turn off and, depending on the value of
I28,
the fan turns off after delay
I35
or
stays on for air recirculation:
if
I28
=0 or 2, the fan stops after delay
I35
.
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.
N.B.: if the minimum thermostat function is active, the thermostat itself must be closed when the heating valve is in regu-