| Mounting | U |
| Application | Universal Pilot Burner for Intermittent Pilot Applications |
| Used With | S8600F, S8600H, S8600M, S8610F, S8610H, S8610M, S8610U, S8660D, S8660E, S8670D, S8670E |
| Includes | BCR-20, BCR-18, BBR-12, BBR-11, BCR-10 orifices, Adjustable tip style, 1/4 in. and 1/8 in. compression fittings, 36 in. and 55 in. igniter lead lengths |
| UL | UL Listed: MCUR2.MH63583 |
| Temperature Ratings (F) | Lead wire -- 482 F |
| Type of Gas | Natural; LP |
| Aeration | Non-primary |
| Compression Fitting Size | 1/4 in. and 1/8 in. |
| Orifice | BCR-20 (0.020"); BCR-18 (0.018"); BBR-12 (0.012"); BBR-11 (0.010"), BCR-10 (0.010") |
| Tip Style | Single |
| Direction of Front Tip | Adjustable Left, Right, and Center |
| Dual Rod or Single Rod | Single Rod |
| Pilot Btuh | 1000 Btuh |
| Length (in.) | 36 in. and 55 in. |
Description
Pilot burner from Resideo (Honeywell Home), part number Q3451U1000/U.
The pilot burner holds the small standing flame that lights the main burner and keeps the thermocouple hot. It is a part that does not fail so much as it clogs — lint, rust scale and spider webs in the pilot tube are the classic cause of a furnace that will not stay lit.
This is a universal pilot burner: it ships with the hardware and orifices to cover a range of appliances, which is what makes it the one worth carrying on the truck rather than ordering per job.
Pilot assemblies are sized and aimed for the appliance they were built for, and the catalogue is full of parts that look alike across the bench. Bracket geometry, tube length, tip direction and orifice all have to line up, which is why the part number on the old assembly is worth more than a visual match.
When a pilot problem turns out not to be the burner, it is nearly always upstream of it: a blocked or kinked pilot tube, a thermocouple that no longer makes millivolts, or a draft condition pulling the flame off the thermocouple tip. Replace the assembly, but check the tube and the draft while it is apart.
- Brand: Resideo (Honeywell Home)
- Manufacturer Part #: Q3451U1000/U
- Type: Pilot burner
- Universal: Yes
- UPC: 085267279154
- Category: Pilot Burners

