923.55 EURexcl. VAT · import VAT and duties on delivery
Key specifications
| Safety time | 10 s |
|---|---|
| Flame detector type | ionisation probe; infra-red flicker detector |
| Flame detection methods supported | ionisation, infra-red |
| Cycle type | 2-stage atmospheric gas burners |
| Safety feature | manual reset lockout |
| Fuel | Gas |
| Firing stages | 2-stage |
| Interchangeability | not interchangeable across series |
| Pre-ignition time | 10 s |
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Description
The Honeywell Control box 02602 (type designation TFI812.2) is a gas burner control box for 2-stage atmospheric gas burners. It has a safety time of 10 seconds and a pre-ignition time of 10 seconds. Flame detection can be performed by an ionisation probe or an infra-red flicker detector. The control box features manual reset lockout. It is not interchangeable across series.
Further details
| Driven Components | ignition transformer, fuel valve(s), fan motor |
|---|---|
| Monitored Inputs | air pressure switch and flame detector |
| Operating sequence | pre-purge, ignition trial, fuel admission, flame proving |
Choosing and fitting
Replacement control boxes of this type are selected by exact series and type designation, supply voltage, pre-purge and safety times, flame detection method (ionisation, UV or IR), and the physical base or plug pattern. These parameters are not interchangeable across series, even within the same brand. Always verify that the wiring diagram of the new control matches the existing burner circuit and that the flame detector type is compatible. Some controls require a specific flame sensor or a separate amplifier.
Signs of failure
During startup, the control box performs pre-purge, ignition trial, fuel admission and flame proving. If no flame is detected within the safety time, it locks out and must be reset manually.
All specifications
| Safety time | 10 s |
|---|---|
| Flame detector type | ionisation probe; infra-red flicker detector |
| Flame detection methods supported | ionisation, infra-red |
| Cycle type | 2-stage atmospheric gas burners |
| Safety feature | manual reset lockout |
| Fuel | Gas |
| Firing stages | 2-stage |
| Interchangeability | not interchangeable across series |
| Pre-ignition time | 10 s |
Part numbers
| SKU | 02602 |
|---|---|
| Additional article | 852.124.120 |
| Type designation | TFI812.2 |
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