Honeywell satronic DLG 974 Manual

Gas Burner Safety Control
For 1- or 2-stage forced draught and combi
oil/gas burners
Possible flame detectors:
- Ionisation probe
- Infrared flicker detector 1020.1
- UV flame sensor UVD 971
INTRODUCTION
The burner control box DLG 974/976 controls and supervises
power burner for gas and dual fuel. The control box is
approved and certified according the relevant European
standards. The use on direct air heaters according DIN 4794
is also possible.
The microprocessor- based programming sequence ensu-
res extremely stable timings independent of voltage varia-
tions, ambient temperature and/or switch-on cycles. The
built-in information system not only provides a continuous
monitoring of the actual state of the box (very helpful es-
pecially for monitoring the start-up phase) but also informs
about the cause of a possible lock out. The lock out cause
is stored in such a way that it can be retrieved even after a
power failure.
The control box is designed for maximum safety in case of
fluctuations in the voltage supply. If the mains voltage drops
below the permitted level, operation is interrupted and the
control box automatically prevents the start sequence from
being repeated. In this way, the safety of the system is not
put at risk by a drop in the mains voltage. This low-voltage
protection works not only during start-up but also perma-
nently during operation.
CONSTRUCTIONAL FEATURES
Microprocessor, electronic components, output relais and
flame amplifier are placed on two printed circuit boards.
These plus the lockout- and reset circuit are well protected
inside a flame resistant, plug-in type plastic housing.
The reset switch for reset / remote lockout with its built-in
LED for displaying the information system plus the central
fixing screw are placed on top of the housing.
The wiring base S98 is equipped with spare- and
extraterminals and allows together with a variety of cable
entry points utmost flexibility of electrical wiring.
TYPES AVAILABLE
DLG 974 Mod.01 1-stage operation
DLG 976 Mod.01 2-stage operation
DLG 976 Mod.04 2-stage operation
Table of timings (sec.)
Model max. reaction time for
air proving switch
tlw
01 60
04 60
A Honeywell Company
replacement for
Siemens
LGB21.130A27
supervised pre-ignition
pre-purge time time
tv1 tvz
24 3
5 2
DLG 974/976
TECHNICAL DATA
Operating voltage
or
Fuse rating
Power consumption
Max. load per output
- term. 3 ignition trafo
- term. 4 motor
- term. 5 + 6 solenoid valves
- term. B alarm indicator
total load
Direct lockout after a loss-of-flame during operation
Air proving switch
Sensitivity (operation)
Min. required ion. current
Sensitivity for stray light
Ionisation probe insulation
stray capacity
cable lenght
Flame detectors
IRD 1020.1
UVD 971
Weight incl. Wiring base
Mounting position
Protection class
Approved ambient parameter
for control and flame detector
- for operation
- for storage
Build-up of ice, penetration of
water and condensing water
Approvals according
to European standards
Classified acc. to EN 298
post-ignition Stray light
time monitoring
tn tf
2 5
2.5 4.5
1
220 / 240 V (-15... +10%)
50 / 60 Hz ( ±5%)
110 / 120 V (-15... +10%)
60 Hz ( ±5%)
10 A fast, 6 A slow
ca. 12 VA
1.5 A, cos ϕ 0.2
2.0 A, cos ϕ 0.4
1.0 A, cos ϕ 0.4
1.0 A, cos ϕ 0.4
5.0 A, cos ϕ 0.4
max. 20 A during 0.5 sec
1 working contact 4 A, 230V
1 µA
1.5 µA
0.4 µA
Probe - earth
greater than 50 MΩ
Probe - earth
less than 1000 pF
< 3 m
side-on or end-on viewing
end-on viewing
190 g
any
IP 40
max. 95% at 30° C
-20° C... +60° C
-20° C... +80° C
are inadmissible
EN 298 and EN 230, as
well as all other relevant
Directives and standards
FTLLXN
safety delay 2nd-stage
time DLG 976 only
ts tv2
3 12.5
3 8