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Technical Documentation
Electrical circuit.
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Legend:
B1
- Delivery probe
CRD - Remote digital control (optional)
DS1 - Display
E1
- Ignition electrode
E2
- Detection electrode
E4
- Overheating safety thermostat
E6
- Flue safety thermostat
The electrical circuit of the NIKE Mini 24-28-24 S boiler is
controlled 100% by a p.c.b. which controls boiler functions.
Some of the control and safety devices work at mains voltage
(230 Vac) while others at low voltage.
230 V AC circuit.
Detection electrode
(E2)
Line fuse (F1)
Neutral fuse (F2)
STNM ed 07/07
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Control and safety devices.
It detects burner ignition, being hit by its flame.
It is connected to the integrated board.
They interrupt power to the circuit when power input is over
3.15 A.
They are mounted on the integrated board.
21
Technical Documentation
F1
F2
JP1 - Boiler type selector
M1 - Circulator
M30 - 3-way valve (motorised)
S2
S3
S4
S20 - Room thermostat (optional)
S21 - D.h.w. temperature increase push
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S22 - D.h.w. temperature reduction push
S23 - Central heating temperature
S24 - Central heating temperature
T1
T2
U1
X40 - Room thermostat jumper
Y1
Y2
Nota: The NIKE Mini 24 S is a wall-hung boiler for central
heating only which, using an optional kit comprising a 3-way
electric valve and a domestic hot water probe together with
the necessary wiring (that can be connected directly to the inte-
grated board), can be combined with a separate storage tank
to produce domestic hot water.
- Line fuse
- Neutral fuse
- Functioning push button
- Block reset push button
- D.h.w. flow switch
button (if enabled to work)
button (if enabled to work)
increase push button
reduction push button
- Ignition transformer
- Boiler board transformer
- Rectifier located inside the con-
nector of the gas valve (Honeywell
gas valve only)
- Gas valve
- Gas valve modulator
3.15 AF 250 V
fuse
NIKE Mini Export
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