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Enclosure
IP 22 when mounted on a vertical
surface with the protected connectors
downwards, otherwise IP 00
SYSTEM OPERATION
Automatic ignition controller for at-
mospheric burners (Suffix AS, BS, PS
and QS, see fig. 4)
When thermostat calls for heat the
waiting period(T
) starts. After(T
w
hot service igniter starts heating up
and after the glowing time (T
valve is switched on.
After the gas valves (V
+ V
1
energized for 2.5 s, the glowing stops
and the flame existance can be
detected.
A flame presence output signal after
flame detection is available.
(suffix BS, QS).
If flame is not established within the
safety time (T
), the automatic ignition
s
controller locks out.
If flame is lost during normal run, the
automatic ignition controller repeats
start sequence.
INSTALLATION AND CHECKOUT
Important
:
Installer must be a trained expe-
rienced service man.
:
Disconnect power supply to pre-
vent electrical shock and/or equip-
ment damage.
:
Before installing or replacing any
control check that type number is
correct for the application.
:
The appliance manufacturer's in-
structions should always be follo-
wed when provided.
If such instructions are not provi-
ded see fig. 4 for typical systems.
:
Ensure combustion chamber is free
of gas before start up.
:
Conduct a thorough check out
when installation is completed.
:
At the first start the ignition control-
ler can be in lock out; depress re-
set button to free control.
6
Accessories
(to be ordered separately)
Multiple connectors including 1 m
leads, order number:
2 pole (AS,BS,LS,PS,QS,TS)
Automatic ignition controller for po-
wer burners
(Suffix LS and TS see fig. 4)
When thermostat calls for heat, fan is
) the
energized if air proven switch is in the
w
"NO AIR" position.
) the gas
When sufficient air flow is proven by the
g
air proving switch, a prepurge period
) are
(T
) elapses.
2
P
At the end of the prepurge time the
glowing time (T
stays running.
The gas valve will be energized at the
end of the glowing time. After the gas
valve is energized for 2.5 s, the glowing
stops and the flame existance can be
detected.
A flame presence output signal after
flame detection is available.
(suffix LS, TS).
Mounting
The automatic ignition controller should
be mounted on a flat surface by means
of 4 mounting holes (see fig. 5).
The automatic ignition controller
functions position independently.
Hot surface igniter
Refer to the appliance manufacturer's
instructions for recommended igniter
position.
Wiring
:
Wiring must be in accordance with
local regulations
:
Use untinned receptacles for easier
connection.
:
Use leadwire which can withstand
E
105
C ambient.
:
Use leadwire which is proven against
moisture.
:
Wiring between automatic ignition
controller and hot surface igniter
probe should have good quality insu-
lation, suitable for the temperatures
encountered.
45.900.419--020
) starts, while the fan
g
3 pole (AS,PS)
45.900.419--019
4 pole (BS,QS)
45.900.419--018
6 pole (AS,BS,LS,PS,QS,TS)
45.900.419--011
7 pole (LS,TS)
45.900.419--017
If flame is not established within the
safety time (T
), the automatic ignition
s
controller locks out.
If air flow is not proven by air proving
switch, automatic ignition controller will
remain in a waiting mode with fan
energized.
If flame is lost during normal run, the
automatic ignition controller repeats
start sequence.
Flame presence output
Suitable for flame indication or high/low
applications.
Lock out reset
The auto ignition controller will be reset
by depressing the internal or the
external reset button.
If a first reset is not succesful wait at
least 15 seconds before making
another reset.
Supply voltage polarity
Warning
If automatic ignition controller seems
to operate normally but does not
detect ignition flame, check for right
polarity of power supply (line,
neutral).
Checking flame current
The minimum value should be 1 µA.
:
:
To check flame current at combined
flame sensing (see fig. 1) connect a
DC micro--Ampèremeter between pin
17 and pin 18.
:
To check flame current at separate
flame sensing (see fig. 2) connect a
DC micro--Ampèremeter in series
with the flame electrode.
:
If flame current is insufficient check
that hot surface igniter/flame elec-
trode is fully enveloped by the flame.
Checkout
After installation, set burner system in
operation and observe through a
complete cycle to ensure that burner
system components function correctly.
MU1R--9096 9212R4--NE
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