furnace sensors and switches

[duongz]

wondering what these sensors/switches are

left most burner sensor has one 90 degree prong
right most burner sensor has two 90 degree prongs
and the top two with buttons/what do the buttons do

and is it ok to have tables/boxes/cabinets around like this?

 

[duongz]

model is model is rheem rgps-10eamer

 

[argile_tile]

ok unlike hvac, messing with a gas furnace can cause a fire/explosion (if you mistakenly remove safety mechanicals) so "don't

ok no, not ok to have boxes around it. the dangerous thing is having any wires or gas lines ABOVE the furnace (between ceiling and furnace top).

the red wire photo 2 is probably an ignitor sensor which senses if the flame is burning or not

the organge photo 3 appears to be the ignitor. it uses 12-24V (model?) to ignite the gas. it shouldn't be touching metal or the flame (the part that glows). they get so hot their radiation ignites the flame from up to 6" away - but they break if they touch metal or the flame directly.

 

[argile_tile]

i don't see the "prongs" or buttons, but don't fool with them.