Honeywell TMG740-3 MOD 43-35 Burner Control Box

TMG740-3 MOD 43-35 is a Honeywell Satronic TMG 740-3 burner control box for forced-draught and dual-fuel oil/gas burners in intermittent single- or two-stage operation. The complete Mod. 43-35 label, supply voltage, detector and burner wiring must match before use.

TMG740-3 MOD 43-35 Mod. 43-35 uses 32 s supervised pre-purge, 40 s pre-purge with the air damper open, 4 s pre-ignition, 3 s start- and pilot-valve safety intervals, 14 s pilot-valve switch-on, 5 s main-valve safety interval, 10 s valve delays and 10 s post-purge. Confirm the correct timing column on the exact label.

TMG740-3 MOD 43-35 is documented for 220/240 V AC (-15...+10%) at 50 Hz (40–60 Hz). It supports ionisation, UV and infra-red flicker detection; set the detector selector to the installed probe and verify the burner safety circuit.

TMG740-3 MOD 43-35 requires the air-proving switch, ignition, pilot/main valves, motor, gas proving and safety thermostats to match the documented terminal wiring. Isolate power before plugging or unplugging the box and verify the complete safety sequence during commissioning.

TMG740-3 MOD 43-35 is not a verified direct substitute for another timing or voltage version. The manual states interchangeability with earlier TMG 740-3 versions only when the complete supply, socket, detector, timing programme and burner safety configuration are confirmed.

TMG740-3 MOD 43-35 is specified for -20 °C to +60 °C ambient, IP 44 insulation and EN 298 BTLLXN classification, with a 10 A rapid or 6 A slow fuse limit and approximately 15 VA consumption. Confirm mounting, grounding and the required normal shutdown cycle before operation.

For TMG740-3 MOD 43-35, provide the complete printed model including MOD 43-35, supply voltage, socket/base, flame-detector type, burner application, terminal and wiring photographs, revision, quantity and replacement objective.