Sit 810 ELETTROSIT User manual

810 ELETTROSIT
MULTIFUNCTIONAL GAS CONTROL
SIT Group
PIN 63AN7060/3
PUSH-BUTTON CONTROL
ALL ADJUSTMENTS ACCESSIBLE FROM ABOVE
THERMOELECTRIC SAFETY DEVICE
ON-OFF SOLENOID VALVE

Ignition button (pilot position) .
Main burner ignition enabling button (manual or automatic version).
Shutdown button .
Thermoelectric flame failure device with reset interlock.
Near-silent automatic on-off solenoid valve.
Pressure regulator.
Adjuster for gas flow to the pilot burner.
Step ignition device (optional).
Inlet and pilot filters.
Inlet and outlet pressure test points.
Threaded gas inlet and outlet ready for flanged connection.
MAIN FEATURES
High-flow multifunctional
control complete with: push-
button control (off, pilot, on),
thermoelectric safety device
for protection against improper
operation, main burner ignition
enabling button, pressure
regulator, on-off solenoid valve
with gas flow on-off control.
On request, a step ignition
device can be fitted.
ELECTRICAL MULTIFUNCTIONAL
CONTROL
810 ELETTROSIT is suitable for use
with gas heating appliances
(boilers, hot air generators, etc.).

TECHNICAL DATA
DESCRIPTION
7Pressure regulator override device
8 Inlet pressure test point
9 Outlet pressure test point
10 On-off solenoid valve
11 Thermocouple connections
12 Pilot outlets
13 Main gas inlet
14 Main gas outlet
15 Holes (M5) for fixing flanges
8
9
10
11
13
15
• Gas connections: Rp 1/2 ISO 7 (Rp 3/4 on request)
• Installation position: any position
• Gas families: I, II and III
• Maximum gas inlet
pressure: 50 mbar
• Outlet pressure setting
range: 3...18 mbar (on request 15...30)
• Working temperature
range: 0...60 °C
• Pressure regulator: Class C
• Automatic solenoid valve: Class D
Data refer to EN 126
1 Ignition button (pilot position)
2 Main burner ignition enabling
button
3 Shutdown button
4 Pressure regulator setting device
5 Pilot gas flow adjusting screw
6 Step ignition device adjustment
screw
12
POWER SUPPLY
Voltage (AC) Consumption (mA)
230 V 50 Hz 75
24 V 50 Hz 650
7
6
2
1
3
45
14

DIMENSIONS
FLOW RATE AS A FUNCTION OF PRESSURE DROP
82
2,5
18,5
12
126
28,5
102
NO PR
REG. ADJ
ADJI¡STEP
PILOT ADJ.
,
,
,
,
,
,,
,,
,,
,,
,,
123
84 Rp 3/4
Rp 3/4
87
134
47
30
Pilot Ø 6
11/32"
G
G
05
Q [m3/h d=0.6]
4
2
6
8
10
Dp [mbar]
1234
Rp 1/2 Rp 3/4
I Family (d = 0.45) Q = 11.2 m3/h Q = 12.9 m3/h Æp = 5 mbar
II Family (d = 0.6) Q = 9.8 m3/h Q = 11.2 m3/h Æp = 5 mbar
III Family (d = 1.7) Q = 6.0 kg/h Q = 6.9 m3/h Æp = 5 mbar
Q [m3/h, d=0.6]
Dp [mbar]
Rp 3/4
Rp 1/2

Pilot flame ignition
Depress the button and ignite the pilot flame,
keeping the button fully depressed for a few seconds
(fig.1). In controls with enabling for electrical
ignition, the pilot can be ignited automatically by
depressing the button . Release the knob and
check that the pilot flame stays lit. If it goes out,
repeat the ignition operation.
Main burner ignition
Depress the transverse button (fig.2) (manual
versions).
The gas passage to the main burner is opened by
powering the automatic solenoid valve.
The valve with step ignition device reaches the
maximum flow after about 10 seconds.
Pilot flame ignition
Fully depress the knob (fig.1) to keep the main
burner closed and the pilot flame lit.
Shutdown
Fully depress the knob (fig.3).
CAUTION: the restart interlock device prevents igni-
tion of the appliance until the flame failure device has
stopped gas flow. At the end of this period (after clo-
sing the magnet unit) it is possible to carry out the
re-ignition operation.
OPERATION
fig. 1
fig. 2
fig. 3

INSTALLATION
Main gas connection
The connection is made using gas pipes with Rp 1/2 ISO 7 (or Rp 3/4) threading. Torque:
25 Nm. If, alternatively, flanges (available on request) are used, first screw the pipes onto
the flanges and then the flanges to the control. Recommended torque for the flange
fixing screws: 3 Nm.
Connection to the pilot burner
Pipes with a 4 mm, 6 mm or 1/4 diameter can be used. Use a nut and olive of appropriate
dimensions. Tighten to 7 Nm torque.
Electrical connections
All the electrical connections should be made in compliance with the provisions of the electrical
standards in force. Check that the voltage and frequency of the coils, indicated on the control,
are correct. Check that all the connections, in particular the earth, are carried out to industry
standards.
The 24Vac versions must be powered by an isolating transformer (with very low safety voltage).
Carry out the connections in accordance with the rules for the appliance.
To access the supply and earth terminals, unscrew the screw and remove the cover. To
access the electric ignition enabling terminals “W” (where applicable), unscrew the screw “M”
and remove the enabling device. The limit thermostat “LS” should be inserted into the ther-
moelectric circuit.
CAUTION: after making the connections, check gas tightness and electrical insulation.
WIRING PLANS w = Pilot burner electric ignition enabling
K = Internal enabling for main burner ignition
TA = Ambient thermostat
LS = Limit thermostat
KTA ~
123
ON-OFF
LS
W

SETTINGS AND ADJUSTMENTS
Measurement of the inlet and outlet
pressure
The inlet and outlet pressures of the gas can
be measured by unscrewing the provided test
point sealing screws.
Replace screws with 2.5 Nm torque.
Gas flow-rate adjustment to the pilot
Adjustment screw (PILOT ADJ.).
Screw in the screw to reduce the flow, or
unscrew it to increase flow.
Outlet pressure adjustment
Adjustment screw (REG. ADJ.).
Remove the protective cap, screw in the
adjustment screw (REG. ADJ.) to increase the
outlet pressure, or unscrew it to decrease flow.
Adjustment of the step ignition minimum
flow with natural gas
Adjustment screw (1st STEP ADJ.)
With the screw (1st STEP ADJ.) in combination
with the screw (REG ADJ.), or with the buttons
and , it is possible to adjust the step ignition
device so that the burner goes on gradually and
silently.
Adjustment of the step ignition minimum
flow with third family gases
By completely unscrewing the screw (NO P.R.)
and adjusting the screws (REG ADJ.) and (PILOT
ADJ.), it is possible to obtain gradual and silent
ignition with third family (LPG) gases too.
CAUTION:
See the use and installation manual for a
detailed description of the adjustment systems
described above (footnote).
Check tightness and efficiency and seal the
adjustment devices.
Implement the provisions in the Use and Maintenance manual - code
9.956.810 - for installation, adjustment and use.
IST STEP ADJ.
PILOT ADJ.
REG. ADJ.
NO P.R.

810 ELETTROSIT
High flow multifunctional
control for gas appliances
with electrical power
supply.
9 955 721 R00 GRAPHIC DESIGN BY START - PD - ITALY
SIT La Precisa
Viale dell'Industria 31/33 35129 PADOVA - ITALY
Tel. [phone] - Fax [phone] - Telex 430130 SITEC I