5
ATI SP 80, 120, 220, 300, 400 – INSTALLATION INSTRUCTIONS
Sept - 01
ELECTRONIC CONTROL BOX
This controls the opening and closing of the gas valve
and the ignition of the burner.
If the pressure switch is in the “no air” position when
the control thermostat calls for heat, the fan is
switched on. When sufficient air flow is proven by the
pressure switch, a pre-purge period elapses before the
built-in ignite and gas valve are energised. The ignition
spark ignites the gas and the resulting flame is
detected by the flame detection electrode. Ignition
sparking is switched off immediately after a flame is
established. If the flame is not established within the
safety time, the control box locks out. In this case, wait
a few seconds and reset the control box, by
depressing the reset push-button on the instrument
panel. A new ignition cycle will start.
The flame sensing is based on the rectification
principle (an AC signal is sent from the control box to
the detection electrode, where it is converted to a DC
signal and returned to the control box).The control box
is approved by Gastec, Holland and VDE and DIN-
DVGW, Germany.
GAS VALVE
For ATI SP 80-120:
This is a compact multi-functional
and multi-gas control, with 2 direct-acting solenoid
valves (class B, group 2) with high sealing force. It has
an integral electronic packages for quiet operation with
cushioned solenoid stops, and it incorporates an
adjustable direct acting pressure regulator, and
approved by DIN-DVGW Germany.
The aluminium body has 3/8” x 3/8” (BSP P.I.) inlet
and outlet and inlet screen (protected from potential
pipe damage). Commissioning and any adjustments
should be carried out by a qualified combustion
engineer. Care should be takes to prevent foreign
matter from entering valve during valve replacement.
MAINTENANCE: the only maintenance operation
allowed is the solenoid replacement, which has to be
carried by qualified personnel only.
For ATI 220 – 300 – 400
This is a multi-functional and
multi-gas gas control, with double silent
directly operated solenoid valve in class 2, adjustable
pressure regulator and low rate ignition with ignition
rate adjuster (factory set). Tis is approved by BRITISH
GAS (UK) and GASTEC (Holland).
The aluminium body has 1/2” x 1/2” RP UNI-ISO 7 gas
inlet and outlet, inlet and outlet pressure test points
and inlet filter. The solenoids are connected in series,
with a single electrical connector for both.
Commissioning and any adjustments should be carried
out by a qualified combustion engineer. Care should
be takes to prevent foreign matter from entering valve
and ensure that gas flow follows arrow on valve body
during valve replacement.
MAINTENANCE:
the only maintenance operation
allowed is the solenoid replacing, which has to be
carried out by qualified personnel only.
supply voltage
220/240 V
50/60 Hz
ambient temperature
0 - 60 °C
pre-purge time
30 sec
safety time
10 sec
minimum flame current
0,7 uA
response time off
< 1 sec.
CONTROL BOX - TECHNICAL DATA
Picture 3
Gas Valve for ATI SP 80 & 120
GAS VALVE FOR ATI SP 80 – 120
Maximum pressure inlet
50 mbar
Voltage rating
220/240 V 50/60 Hz
Ambient temperature range 0 - 60 °C
Opening time
< 0.25 seconds
Closing time
< 0.25 seconds
Picture 4
Gas Valve for ATI SP 220, 300 & 400
