23
STNM ed 07/07
NIKE Mini Export
Technical Documentation
Technical Documentation
The possible functioning selections are:
= Circuit powered, the antifreeze and antiblock functions
are still active, the post-circulation function is completed.
( ) = Boiler operation in SUMMER.
( ) = Boiler operation in WINTER.
Functioning button
(S2)
Push Button
The burner switches off when the safety temperature (105°C) is
exceeded.
It is positioned at the main exchanger outlet.
Overheating safety ther-
mostat
(E4)
Clicson thermo-
stat with normally
closed contact
It lets the integrated board measure the temperature of the primary
circuit delivery water.
If it breaks the burner stops working both in the central heating
or d.h.w. mode.
It is located at the main exchanger outlet.
Delivery probe
(B1)
NTC probe
10 kohm 25°C
It is powered by the integrated board with a variable continuous current.
It permits varying of the gas pressure to the burner.
Gas valve modulator
(Y2)
Loads.
It enables operation in the central heating mode when room tem-
perature is below that required.
If this room thermostat is installed the X40 jumper must be re-
moved.
Room thermostat (S20)
(optional)
Interrupted
contact
If stack draught is poor it acts on the integrated board stopping
the boiler for 30 minutes.
It is positioned on the right of the draught diverter.
Flue safety thermostat
(E6)
Clicson thermo-
stat with normally
closed contact
