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      TMG740-3-MOD-43-35

      Burner Control Box
      In Stock
      Ships by Sunday, October 18
      Fast Shipping Available

      Product Describe：

      Honeywell TMG740-3-MOD-43-35 is a burner control box for forced-draught and dual-fuel burners. It supervises purge, ignition, flame establishment and staged fuel-valve operation with ionisation, UV or infrared flame detection.

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      Technical specifications Information Alternative names Technical notes FAQ

      Technical specifications for TMG740-3-MOD-43-35

      Technical specifications for TMG740-3-MOD-43-35

      • Manufacturer:
        Honeywell
      • Product Category:
        General Automation
      • Spare Part Number:
        TMG740-3-MOD-43-35
      • Estimated shipping dimensions:
        10.2x10x10.2cm
      • Weight:
        0.85 kg
      • Tariff Code:
        8537101190
      • Counliy of origin:
        USA
      • Supply voltage:
        220 / 240 V AC (-15% to +10%)
      • Supply frequency:
        50 Hz; permissible 40 to 60 Hz
      • Power consumption:
        Approximately 15 VA
      • Output current:
        4 A maximum per output terminal; 6 A total
      • Protection:
        IP44
      • Ambient temperature:
        -20 to +60 degrees C
      • Supervised pre-purge:
        32 s for Mod. 43-35
      • Post-purge:
        10 s for Mod. 43-35
      View as PDF Ask for Quote

      Information

      Information

      Overview Manuals Common Applications Product Precautions
      Honeywell TMG740-3-MOD-43-35 combines a cam-programmed burner sequence with continuous flame-strength indication. The 43-35 timing set coordinates air proving, purge, ignition and staged fuel admission for intermittent firing duty.
      • 43-35 burner programme timing
      • Ionisation, UV or IR flame detection
      • Air-pressure and damper-position supervision
      • Single-stage, two-stage or modulating burner control

      Confirm detector selection, air-switch transfer, damper confirmations and valve timing as separate commissioning checkpoints before enabling continuous burner duty.

      Important Notice: Match the complete MOD 43-35 identity, supply rating, selector position, base wiring and burner sequence before energization.

      Honeywell TMG740-3-MOD-43-35 Manuals & Downloads
      Honeywell TMG740-3-MOD-43-35 Technical Reference (PDF)Honeywell TMG740-3-MOD-43-35 Installation & Commissioning Guide (PDF)

      The Technical Reference consolidates the 43-35 timing programme, electrical ratings, detector choices and burner interfaces. The Installation & Commissioning Guide organizes isolation, wiring checks, staged start-up and lockout testing.

      Forced-draught burners
      Controls the specified start and running sequence for medium- to high-performance burners.
      Dual-fuel burners
      Coordinates supervised oil/gas burner sequences within the approved wiring arrangement.
      Two-stage firing
      Stages start, pilot and main fuel valves using the 43-35 timing programme.
      Direct air heaters
      Supports intermittent burner operation where the installed system follows the applicable burner standard.
      Apply these controls specifically to Honeywell TMG740-3-MOD-43-35 before isolation, replacement or servicing, reconnection and final release.
      1
      Verify the complete TMG740-3-MOD-43-35 label and 220/240 V supply before installation.
      2
      Disconnect power before plugging in or unplugging the burner control box.
      3
      Do not exceed the specified 10 A rapid or 6 A slow fuse rating.
      4
      Match the flame-detector selector to the installed ionisation, UV or infrared detector.
      5
      Keep flame-detector cables within the specified length and separate from mains wiring.
      6
      Prove the air switch and MIN/MAX damper confirmations before permitting fuel release.
      7
      Do not open the burner control box; treat it as a safety device.
      8
      Commission with closed-hand-valve and flame-loss tests, then record lockout performance.

      Alternative Names

      Alternative Names

      TMG 740-3 MOD 43-35, TMG7403 MOD 43-35

      Technical notes

      Technical notes

      Set the flame-detector selector for the installed sensing method before start-up. Verify the air-proving contact returns to rest before demand and transfers throughout purge and firing; record flame-signal LED stability during the run test.

      FAQS

      • What burner duty is Honeywell TMG740-3-MOD-43-35 designed to control?
        It controls intermittent forced-draught and dual-fuel oil/gas burners in single-stage, two-stage or modulating arrangements.
      • What supply does Honeywell TMG740-3-MOD-43-35 require?
        The control box is rated for 220/240 V AC with a -15% to +10% tolerance and 50 Hz operation within a 40 to 60 Hz permissible range.
      • Which flame detectors can Honeywell TMG740-3-MOD-43-35 use?
        The supported choices are an ionisation probe, UVZ 780 ultraviolet sensor, or IRD 820/1020 infrared flicker detector.
      • What pre-purge timing applies to Honeywell TMG740-3-MOD-43-35?
        The 43-35 programme uses 32 seconds of supervised pre-purge and 40 seconds with the air damper open.
      • What are the fuel-valve safety intervals for Honeywell TMG740-3-MOD-43-35?
        The 43-35 timing set uses 3 seconds for the start valve, 3 seconds for the pilot valve and 5 seconds for main valve 1.
      • How should the air circuit be checked for Honeywell TMG740-3-MOD-43-35?
        Confirm the air proving switch returns to rest before start, transfers during purge and remains proven throughout operation; also prove the MIN and MAX damper confirmations.
      • What output-current limits apply to Honeywell TMG740-3-MOD-43-35?
        Each output terminal is limited to 4 A and the combined output current is limited to 6 A.
      • Which acceptance tests are required after installing Honeywell TMG740-3-MOD-43-35?
        Verify wiring, purge and damper timing, attempt start with the hand valve closed, interrupt the flame signal during operation and confirm the specified lockout response.
      Trusted by 5,000+ plants worldwide | Backed by our vast inventory of top-tier control parts, modules and cards, fast shipments are dispatched to cover your urgent needs. ABOUT US >>
      Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

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