Sabiana WM-UH-ECM Instrucciones De Uso página 25

» Function of auxiliary contacts
CA
JUMPER
CLOSED BY
DEFAULT
CA contact [F1-F1]:
The AC dry contact can be connected to a
remote switch or consent to turn the control
on or off, or it can be used to remotely select
the summer/winter operating mode (see DIP
6 setting).
- with DIP no. 6 in OFF
it is configured as remote ON/OFF where:
• open contact = OFF
• closed contact = ON
- with DIP no. 6 in ON
is configured as Summer/Winter where:
• In 1 open = Winter
• In 1 closed = Summer
CF contact (F2-F2):
The CF dry contact can be used to activate the
antifreeze function or night mode (see DIP set-
ting 7).
If the contact F2-F2 is used, remove the Jumper
MC1 which closes the contact.
- with DIP no. 7 in OFF
is configured as anti-freeze mode where:
• open contact = antifreeze mode active
• closed contact = antifreeze mode not active
Antifreeze mode
Antifreeze active, if the ambient temperature
CF
is less than 5 °C the control must activate the
water valve and start the motor at minimum
speed.
The antifreeze mode ends when the ambient
temperature exceeds 8 °C.
Note: the antifreeze mode is indicated by
turning the snow symbol (winter mode) on
the T-MB control on and off.
- with DIP no. 7 in ON
Night mode Dip 7 in On
When activated, the set is changed as follows:
» Summer = Set +3 °C
» Winter = Set -3 °C
» The fan speed is set on 3 V
D0-D0 contact:
it is a normally open dry contact whose mean-
ing depends on the position of DIP 5.
- with DIP no. 5 in OFF
- with DIP no. 5 in ON
25
is configured as night mode where:
• In 1 open = night mode active
• In 1 closed = night mode not active
the contact provides the machine status:
• contact open = machine status in OFF
• contact closed = machine status in ON
the contact is used as a pump or boiler/chiller
start consent.
The contact is closed when the control
requests hot/cold.
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