Satronic 0620720 User manual

1
A Honeywell Company
certified Qualitysystem
ISO 9001 / EN 29001
Reg. Nr. 10529
MMI 810.1 / 811.1
Gas burner automatic
safety control
For 2-stage forced draught and combi oil/
gas burners
Possible flame detectors:
- Ionization probe
- Infrared flicker detector
INTRODUCTION
The gas burner automatic safety control MMI controls
and monitors blown gas- and combined burners of any
nominal thermal load (tested and certified according to
EN 298).
The automatic safety controls MMI 810.1 models 13, 33 and
35 can also be utilized for burners on fixed hot air heaters
(Direct air heaters according to DIN 4794).
Various types and model designations differentiate the
automatic safety controls with respect to the programme
times, as well as with regard to differing national standards.
TYPES AVAILABLE
MMI 810.1 Mod. 13 * Art. Nr. 0620720
Mod. 33 Art. Nr. 0620220
Mod. 35 Art. Nr. 0620920
Mod. 43 Art. Nr. 0622520
Mod. 55 Art. Nr. 0621320
MMI 811.1 Mod. 35 Art. Nr. 0621120
Mod. 63 Art. Nr. 0620420
* Must only be used on boilers or other applications where
the 10 second pre-purge time is sufficient to provide at
least 3 volume changes of the combustion chamber.
CONSTRUCTIONAL FEATURES
The automatic control is housed in a non-inflammable,
transparent, plug-in type plastic case and contains:
–Synchronous motor with speed reducer gears as the
drive for the switching cam
–Switching cam with informative programme display in
colour
–12 times cam drive for controlling the programme
sequence
–Plug-intypecircuitboardswiththeelectroniccomponents
The following important indicating - and operating elements
are located on the front panel of the automatic control:
– Illuminated pushbutton for indication of malfunctions
and reset
– Programme display in colour
– Screw for central mounting
For external resetting, the remote reset device FR 870
(art. No. 70700) can be utilized. (Refer to doc. 750).
TECHNICAL DATA
Operating voltage 220 / 240 V (-15... +10%)
50 Hz (50 - 60 Hz)
Differing frequency Results in a proportional
deviation of the time.
Rating fuse max. 10 A rapid, 6 A slow
Power consumption 10 VA
Max. load per output:
- term. 3 2A, cos ϕ 0.2
- term. 4, B 2A, cos ϕ 0.4
- term. 5, 6 1A, cos ϕ 0.4
total load 5A, cos ϕ 0.4
Amplifier sensitivity 1 µA
Minimum required
Ionization current 5 µA
Flame detector cable max. 20 m cable length
Air pressure monitor working contact 4 A, 230 V
Waiting time for
malfunction remedy None
Flame detector
- Ionization probe
- Infrared flicker detector IRD 1020
Weight, incl. base 350 g
Mounting position any
Insulation standard IP 44
Admissible ambient
temperature for controller
and flame detector -20°C… +60°C
Classified acc. to EN 298 BTLLXN
0708.21-01-e/04/99
program MMI 810.1 811.1
timings (sec.)
Modell 13 33 35 43 55 35 63
Waiting time
at start ca. tw 6 9 99996
Max. reaction
time for air
proving switch tlw 3.5 6 6 6 17 6 5
Pre-purge time tv1 3 24 24 40 20 24 55
Pre-ignition
time tvz 2 3 3 3 15 3 3
T. ignition time tz 5 6 8 6 20 8 5.5
Safety time ts 3 3 53553
Time delay
term.6/term.C tv2 6 10 10 10 10 10 6

2
APPLICATION TECHNOLOGY FEATURES
1. Flame Monitoring
The flame monitoring can be effected with the following
flame detectors:
- With ionization electrodes in power grids with earthed
neutralconductor,utilizablewithgasburners(interference
effectsoftheignition spark cannot influencetheformation
of the flame signal).
- With infrared flicker detector type IRD 1020 for all types
of burners.
2. Burner Control
–The burner controls features a low-voltage protection. If
the supply voltage dropps below 160 V during operation,
the burner switches-off. When the supply voltage raises
above180V, the burner performsa restart independently.
–The automatic burner controls MMI only operate, when a
load is connected to terminal 5. If the fuel valve is
interrupted by an external contact during the pre-purging
phase, a resistance of max. 22 kW, 4 Watt has to be
applied bet-ween the terminals 5 and 8.
–Functional test of the air pressure monitor before the
startup and monitoring of the air pressure during the pre-
purging time, as well as in the operating condition of the
burner. For normal applications a working contact with a
power rating of 4 A / 230 V is sufficient.
–In the case of the automatic control MMI 810.1, contacts
can be installed between the terminals 1 and 9 (e.g., valve
limit position contacts). These are checked for their
correct closing position when the unit is started up. The
connection 1 - 9 has to be closed during the starting
phase of the automatic control.
3. Safety
With respect to design and programme sequence, the gas
burner automatic safety controls of the MMI type range
comply with the currently applicable European standards
and regulations.
4. Mounting and Electrical Installation
On the base:
–3 earth conductor terminals with additional strap for the
earthing of the burner.
–3 neutral conductor terminals with an internal, fixed
connection to the neutral conductor input, terminal 8.
–2individualslide-inplatesand2 fixed knock-out apertures
with thread PG 11, as well as 2 knock-out apertures from
below, make the wiring of the base more easy.
General:
–Mounting position as required, insulation standard IP 44
(splash-proof). The automatic control and sensor should,
however, not be exposed to excessive vibration.
–During mounting and installation, the applicable regula-
tions for installation have to be observed.
COMMISSIONING AND SERVICE/MAINTENANCE
1. Important Remarks
–Before commissioning, the wiring has to be accurately
checked.Faultywiring can damage theunitand endanger
the safety of the installation.
–The mains fuse has to be selected so that the limit values
indicated under "Technical Specifications" are under no
circumstances exceeded. Non-compliance with this
regulation can have very serious consequences for the
control unit and for the installation in the case of a short-
circuit.
–For safety reasons, at least one control shut-down per 24
hours must be assured.
–The control unit must be plugged-in or -out only when the
mains supply has been disconnected.
–Automatic burner safety controls are safety devices and
must not be opened.
2. Functional Check
During commissioning and after an overhaul of the burner,
the following checks have to be carried out:
a) Starting test with closed manual valve and bridged gas
monitor contact:
–The device must go into a fault condition after the
safety period has elapsed.
b) Close the manual valve in operating position with the gas
monitor contact bridged.
–The device must go into a fault condition after a flame
failure.
c) Air pressure monitor contact interrupted:
–Device goes into a fault condition.
d) Bridge air pressure monitor contact before starting:
–Device must not start.
3. Trouble Shooting
Burner does not go into operation, programme indication
remains:
–Electrical connection defective.
–Thermostat or gas monitor "OFF".
Burner does not go into operation, programme indication
rotates continuously:
–Airpressuremonitordefective,respectively,notinstarting
position. (Working contact must be open).
– Connection term. 1 - term. 9 interrupted
– mains voltage < 180V
The automatic control switches to fault condition shortly
after the start of the pre-purge time (line within the blue
zone):
–Air pressure monitor contact does not close.
–No load on terminal 5.
–Flame signal.
Automatic control switches to fault condition during the pre-
purging (blue zone):
–No flame formation (ignition missing, valve does not
open, etc.)
–No flame signal or too weak flame signal (flame does not
adhere, poor insulation of the flame detector, burner not
properly connected to the earth conductor).
Automatic control switches to fault condition during the
operating position (red, resp. green zone):
–Flame lift-off
–Air pressure monitor contact opens
–Flame signal too weak.
MMI 810.1 / 811.1

3
IRD CONNECTION
term. 8
term. 2
term. 9
IRD 1020
MMI 810.1 / 811.1
1 2 A/3 4 5 6 B 7 8 9 C
N
IS Z M V1 V2 SA
LW
HS RT
ST
GW
max. 10 A rapid
6 A slow
Ph
tw tlw tv1 tvz tz ts tv2
1 2 A/3 4 5 6 B 7 8 9 C
max. 10 A rapid
6 A slow
Ph HS GW
ST
RT
SV
N
IS Z MV1V2
SA
LW
tw tlw tv1 tvz tz ts tv2
SCHEMATIC CONNECTION DIAGRAM AND PROCESS DIAGRAM MMI 810.1
SCHEMATIC CONNECTION DIAGRAM AND PROCESS DIAGRAM MMI 811.1
SCHEMATIC DIAGRAM MMI 810.1 SCHEMATIC DIAGRAM MMI 811.1
HS Main switch
GW Gas pressure switch
ST Limit thermostat
RT Control thermostat
IS Ionization probe
Z Ignition
M Burner motor
V1 Solenoid valve 1st stage
V2 Solenoid valve 2nd stage
LW Air pressure monitor
SA External fault indication
SV Safety valve
tw Waiting time at start-up
tlw Max. reaction time
for air proving switch
tv1 Pre-purge time
tvz Pre-ignition time
tz Total ignition time
ts Safety time
tv2 Time delay term.6 / term.C
blue
black
brown

4
A Honeywell Company
Satronic AG
Brüelstrasse 7
Postfach 324
CH-8157 Dielsdorf
MMI WITH BASE MEASUREMENT OF THE FLAME SIGNAL
IRD 1020
MMI 810.1 / 811.1
HOLDER M93
30
30 24 67
91
87
24
Reset button Slide-in plate
PG 11
61
ø 16 mm,
cable entry from below
57-60
30
3525 44
16
M4
16
Earth
5
MMI 810.1 / MMI 811.1
2
E
+
-
ORDERING INFORMATION
ITEM DESIGNATION ITEM NO.
Control unit Type MMI 810.1 mod. 33 0620220
or Type MMI 811.1 mod. 35 0621120
Base for MMI 810.1 Base 701 TTG-EN 70101
Base for MMI 811.1 Base 710 TTG-FN 70102
Slide-in plate PG-plate 70502
optionally Cable clamping plate 70501
Flame detector IRD 1020 end-on viewing 16522
Flame detector IRD 1020 side-on left 16523
Flame detector IRD 1020 side-on right 16521
IRD mounting flange IRD Holder M93 59093
Flame detector cable 3-wire, 0.6 m 7236001
The above ordering information refers to the standard version.
Special versions are also included in our product range. Specificationssubjecttochangewithout notice.
104
50 44
29
21.8
ø13.5
The signal should
be greater than 5 µA
0 - 10 µA
0 - 100 µA
The Satronic Ionimeter
is ideal for making
this measurement.
35
3
14
4.5
26
15.1
48
17
ø20.5
4