Table of Contents
Advertisement
Technical documentation
Modulation coil
(MOD)
Ignition electrode
(E1)
Programmer clock
(OP)
PUMP RELAY
REQUEST RELAY
V/G RELAY
FAN RELAY
Heating potentiometer
(RISC)
Hot water potenziom.
(SANIT)
Gas switch (JP1)
Gas switch G110
(M14)
Anti-leak hot water post-
circulation switch
(JP2)
Heating timer (JP3)
Max heating power
trimmer
(POT. MAX RISC.)
Min heating power
trimmer
(POT. MIN RISC.)
STES ed 07/01
OUTPUTS
This is a positive square-wave signal with variable ON-OFF ratio (duty-cycle) that controls
the modulation coil of the gas valve and makes it possible to alter gas pressure to the
burner.
This is a high voltage signal (about 16 kV) for energising the ignition electrode on the
boiler.
Permits energising the programmer clock at 230 V AC (optional). This can be fitted on the
boiler dashboard after removing the closing plate.
The signal is operative with master switch in 0 position. SUMMER and WINTER.
This is a single-pole relay for controlling the pump (MP). It is excited when operation is
required.
This is a single-pole relay which is excited when the burner has to be ignited.
By means of its contact, the adjustment board ignition circuit is controlled.
This is a single-pole relay that is excited by the ignition circuit to energise the main gas
valve coils (VG).
This is a single-pole relay for controlling the fan (MV) which is excited when operation is
required.
ADJUSTMENTS
For setting the temperature of the water for heating 35 ºC to 80 ºC.
For setting the temperature of the hot water 35 ºC to 55 ºC.
Depending on its position (MET/LPG), it adapts the modulation parameters for the gas for
which the boiler is set (natural gas / LPG).
For adapting the modulation parameters of the board to gas G110
(town gas).
Engaged using the jumper on gas switch JP1 (natural gas/LPG)
which must be shifted onto switch M14
For engaging or disengaging hot water post-circulation and hot-water
anti-leak (see safety devices and modulation board).
The boiler is supplied with these functions engaged as standard.
Every time the unit switches off after achieving set temperaturie
during heating phase, a delay of 180 s / 30 s is engaged until the
subsequent ignition for the same request.
For setting max power during heating phase and adapting this to system requirements (from
minimum to maximum regulated on gas valve).
This adjustment should be made about 2 minutes after ignition in heating phase.
For setting min modulated power during heating phase (from minimum to 2/3 maximum).
This adjustment should be made during first 20 s after ignition in heating phase.
22
Technical documentation
off = natural gas or
LPG
on = G110
(with JP1 off)
off = functions not
engaged
on = functions
engaged
off = 30 s
on (standard)=
180 s
EOLO STAR
Advertisement
Table of Contents
