Home > Products >

TMG740-3 MOD 43-35 HONEYWELL Burner Control Box Forced Draught Dual Fuel Gas Oil for Boiler Project

Name: TMG740-3 MOD 43-35 HONEYWELL Burner Control Box Forced Draught Dual Fuel Gas Oil for Boiler Project
Brand: MOORE AUTOMATION LIMITED
SKU: TMG740-3 MOD 43-35
Price: Negotiable USD
Availability: InStock

Product Details:

Place of Origin:	USA
Brand Name:	Honeywell
Certification:	EN 298 classification BTLLXN
Model Number:	TMG740-3 MOD 43-35

Detail Information

Place of Origin:

USA

Brand Name:

Honeywell

Certification:

EN 298 classification BTLLXN

Model Number:

TMG740-3 MOD 43-35

Product Description:

Combined Burner Control Unit For High-performance Forced-draught And Dual-fuel Burners

Official SKU / Lifecycle:

08218U · Discontinued (Resideo Official Page)

Supply Voltage:

220 / 240 V AC (-15...+10%), 50 Hz (40-60 Hz)

Application:

Intermittent Single/two-stage; Multi-stage Or Modulating Operation

Flame Detection:

Ionisation Probe; UVZ 780 UV Sensor; IRD 820 / 1020 Infra-red Detector

Protection / Ambient:

IP44 · -20 °C To +60 °C

Highlight:

High Light

Highlight:

Honeywell burner control box

forced draught dual fuel

boiler project gas oil

Trading Information

Minimum Order Quantity:

Price:

inquires

Packaging Details:

new and original with factory sealed

Delivery Time:

2-3 work days

Payment Terms:

T/T

Supply Ability:

requires

Product Description

TMG740-3 MOD 43-35 HONEYWELL Burner Control Box Forced Draught Dual Fuel Gas Oil for Boiler Project

Engineered specifically for complex, multi-stage boiler automation, the Honeywell Satronic TMG 740-3 Mod 43-35 features a fully integrated dual-fuel logic sequencer with flexible flame supervision (UV/Ionization). Unlike basic controllers, this series guarantees seamless fuel switching (gas/oil) and exact air-damper synchronization, completely eliminating combustion instability during fuel transitions. This makes it the ideal safety and control solution for high-capacity industrial steam boilers, district heating plants, and heavy-duty thermal processing facilities.

Technical Specification

Specification Item	Technical Data	Practical Value for Buyers
Product Model	TMG 740-3 Mod 43-35	Standardized sequence control box for medium-to-high capacity burners.
Manufacturer	Honeywell / Satronic	Tier-1 global brand ensuring reliable safety compliance and high resale value.
Applicable Fuels	Dual-fuel (Gas / Oil)	[Core Value] Single unit handles both gas and oil. Enables flexible fuel switching during energy price spikes or supply shortages without buying a second control panel.
Operation Mode	Multi-stage or modulating	Supports smooth firing adjustments, improving boiler fuel efficiency and reducing thermal stress.
Operating Voltage	220 / 240 V (-15% to +10%), 50 Hz	Fully compatible with standard industrial power grids; handles grid voltage fluctuations safely.
Internal Fuse	4 A fast-acting or 2 A slow-blowing	Built-in circuit protection prevents catastrophic damage to the controller from external wiring faults.
Flame Detectors	Ionization, UV, or Infrared	[Core Value] Triple-sensor compatibility. Buyers don't need to change the controller when upgrading flame sensors, vastly simplifying inventory management.
Protection Class	IP44	Splash-proof enclosure, preventing dust and moisture damage common in harsh boiler room environments.
Ambient Temp.	-20°C to +60°C	Robust hardware design that operates reliably near hot boiler surfaces or in freezing unheated facilities.
Interchangeability	Backwards compatible	Fits perfectly into existing TMG 740-1/2 footprints, eliminating rewiring costs and minimizing downtime during maintenance.

Program Sequence Timings

Symbol	Sequence Phase	Nominal Time	Practical Value for Buyers
t1	Pre-purge time	32 s	Thoroughly clears unburned gases before spark ignition to prevent dangerous boiler backfires.
t1_max	Max. air damper open time	40 s	Synchronizes perfectly with slow-moving heavy industrial dampers, preventing startup timeout errors.
ts	Safety interval	3 s	[Core Value] Ultra-fast 3-second gas shutoff. Instantly cuts fuel if no flame is detected at startup, strictly adhering to global safety codes to prevent catastrophic explosions.
tv1 / tv2	Delay Main Valve 1 & 2	10 s / 10 s	Staggers the firing stages to prevent pressure shocks in the gas line and ensure a stable, gradual flame build-up.
tn	Post-purge time	10 s	Safely cools down the combustion chamber and exhausts residual gases after the burner stops.

Engineer's Note (Expert Insight)

"Our lead combustion engineer suggests selecting the TMG 740-3 Mod 43-35 specifically if your boiler features a slow-acting motorized air damper (over 30 seconds to open). The 40-second maximum opening tolerance (t1_max) on this model prevents the burner from throwing false 'damper timeout' lockouts during the startup phase. Furthermore, always verify whether your field sensor is Ionization or UV; forgetting to toggle the small hardware selector switch on the bottom plate is the #1 cause of unneeded commission troubleshooting we see in the field."

Custom Product FAQ

Q: Can I use the TMG 740-3 Mod 43-35 to directly replace an old Satronic TMG 740-2 box?

A: Yes. The TMG 740-3 series is completely backwards compatible in terms of terminal dimensions and pin layouts. It plugs directly into your existing legacy baseplate without requiring expensive panel rewiring or structural modifications.

Q: What should I do if the control box immediately goes into lockout (red light) right at the ignition trial?

A: First, check the flame signal selector switch on the underside of the housing. If you are using a UV sensor (like the UVD 970) but the switch is toggled to Ionization (or vice versa), the box will fail to register the flame and trigger a safety lockout within 3 seconds.

Q: Does this model support fully modulating burner systems, or only multi-stage (high/low) firing?

A: It fully supports both. Thanks to its versatile timing relays (tv1 and tv2 delays) and dedicated air damper control logic, the Mod 43-35 seamlessly handles multi-stage high/low setups as well as continuous modulation via external 3-point step controllers.

Company Profile

MOORE service offerings are more comprehensive
At every stage of our operations, we ensure that exceptional service is at the heart of what we do. We also invest significantly in attracting top global talent and securing exclusive technologies, enabling us to provide even higher quality service to our customers.
MOORE parts selection is more diverse
We are committed to continuous innovation and to raising the global standard for automation parts supply. Regardless of a customer's location or the difficulty in sourcing parts, our goal is to connect clients worldwide through our extensive inventory. Our broad range of offerings ensures that we can deliver a wide variety of parts to customers across the globe.

Ready to elevate your automation system? Contact us today for more information or to make a purchase:

What's app: 86-18020776792

Miya Zheng

Scan the QR code above to contact us

miya@mvme.cn || 86-18020776792

Tags:

TMG740-3 MOD 43-35 HONEYWELL Burner Control Box Forced Draught Dual Fuel Gas Oil for Boiler Project

High Light

Highlight:

Honeywell burner control box

forced draught dual fuel

boiler project gas oil

honeywell module,

honeywell power supply,

honeywell replacement parts

CC-TPIX11 51306544-175 HONEYWELL Redundant Pulse Input Module For Experion DCS System

CC-PSP401 51454122-175 HONEYWELL Speed Protection IO Module For Rotating Machinery

10014/I/F HONEYWELL Digital Input/output Module With 16 Channels, 8 Inputs And 8 Outputs For Industrial Control Systems

TK-PRS022 HONEYWELL C200E Control Processor Module for the Experion PKS DCS platform

FC-SCNTO2 HONEYWELL Input/Output Module

TMG 740-3 MOD 43-35 HONEYWELL SATRONIC CONTROL BOX

FC-IOTA-NR24 51306507-175 HONEYWELL Redundant I/O Terminal Component