Alarko SERADENS SRD 20, Installation, Operating And Maintenance Instructions

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Ta
B
LN
Ta
Se
Se
1
M1 2
A
CHRONOSTAT
Outside
temperature sensor
Fig. 1
Connecting the outside temperature sensor (Option)
Connect the wires to the terminal board inside the instrument panel as follows:
a. switch off the power supply at the main switch.
b. remove the front case panel of the boiler.
c. slacken the screws and remove plate A (see fi g.36).
d. connect the outside temperature sensor on contacts marked as SE-SE on the terminal board B ;
When the wires have been connected, place plate “A” back to position and then the front case panel.
36
Connecting the room thermostat (Option)
 Connect the wires to the terminal board inside the instrument panel as follows:
(Example with WEEK digital weekly chronostat):
a. switch off the power supply at the main switch.
b. remove the front case panel of the boiler.
c. slacken the screws and remove plate A (see fi g. 36).
d. remove jumper TA -TA from the terminal board B;
e. connect the room thermostat/chronostat wires;
When the wires have been connected, place plate “A” back to position and then the front case panel.