Convection Fan Snap Disc Switch

StockHR

New Member
Jul 12, 2019
4
Vermont
My Quadrafire has a convection fan snap disc set at 120-20. It works fine but I'm wondering about replacing it with the type you can dial in a the temp. The reason being that when the stove turns off the blower continues to blow to a point where it is blowing cool air before it shuts off. I would like to get one where the blower comes on at 100 degrees and off when it falls below 100 degrees. Ant thoughts?
 

begreen

Mooderator
Staff member
Nov 18, 2005
78,568
South Puget Sound, WA
Snap disks come in many temp ranges. 100 degrees is a bit cool for turning on. It risks the blower short cycling on and off on warm up. Maybe get a 120-10 switch or a 130-20?
 

begreen

Mooderator
Staff member
Nov 18, 2005
78,568
South Puget Sound, WA
The first number is the switch on temp, the second is the differential for switching off. So a 120-10 would make contact when the switch is at 120º and shut off at 110º. With the current 120-20 switch the blower should be blowing out 100º before shutting off. If so, it may feel cool blowing over the skin, but it should still be well above room temp (I hope!). Note that these are not precision switches so the actual temp can be plus or minus 5º.

I just looked up some 15 amp switches and it looks one that closes at 125º and opens at 105º would work.
 
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begreen

Mooderator
Staff member
Nov 18, 2005
78,568
South Puget Sound, WA
Here is an example of a 120-10 snap disc thermostat. I am not sure if it is the same form as the one you want to replace or the same amperage rating. It's just an example.
 

Overfireinthehole

Feeling the Heat
May 5, 2017
467
Miller MO
We used to have complaints on the quad 1200i room blower taking too long to kick on, so we moved the switch. Some people still complained so we put a lower temp switch on them. Now they complain that it runs too long...
 

kappel15

Minister of Fire
Sep 14, 2014
2,233
Iowa
We used to have complaints on the quad 1200i room blower taking too long to kick on, so we moved the switch. Some people still complained so we put a lower temp switch on them. Now they complain that it runs too long...
Ain't it always the way. When they came out with the AE, it was the quietest stove on the market. But people complained they had to turn their tv's up ???? So Quad changed things(for the worse) so you have a quiet and normal fan mode, which means to hit high fan, you have to really be cooking. kap
 

Overfireinthehole

Feeling the Heat
May 5, 2017
467
Miller MO
By the way kap, have you ever found a good source for the E2 & Trekker Hall effect sensors? Hht won’t sell them to us unless you buy the blower.