Question about Dyna-Glo D-E37 Wall Mounted Panel Heater

1 Answer

Thermocouple how many millivolts should a thermocouple in a pilot flame be?

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 304 Answers

I am assuming you are talking about a type K ( Chromel, Alumel ) type Thermocouple. A junction of these two alloys ( welded together by capacitance discharge) produces 41 micro volts per degree Celsius. As the flame from a perfect air/gas mix produces a flame around 1900 C (propane), and 2000 C (natural gas) . You can simply multiply.

41uV X 1900 = 779mV For propane
41uV X 2000 = 822mV For natural gas

This should give you a pretty good Idea of what you should be looking for. If you are using a standard volt meter to obtain a reading. Touching the leads of the probe to the leads of the meter in affect creates two more thermocouples unintentionally. This will alter your reading only slightly due to the fact that the temperature will be at relatively negligible at the contact points.
Allowing for this distortion you should expect a reading +/- 50mV either way. I hope you find this information helpful. Please take the time to rate this fixya for me. To compensate me for the 4 years of my life I spent cramming weird stuff like this in my head in college and the 5 minutes I spent typing this out for you for free. LOL If you ever need my help select me as one of your experts and I will help you for free.
George

Posted on Jul 28, 2008

  • George Kohler
    George Kohler Jul 28, 2008

    If you give me the exact type thermocouple you are working with and what gas the heater uses, I will calculate the exact reading you should be reading. I think the above estimates should be accurate enough for your purpose though.
    Thanks Again,
    George


×

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My pilot light will not stay lit what could be wrong


A gas valve, whether it uses a powerpile, or thermocouple has a pic & hold feature that works when the heat from the pilot flame generates a millivolt current. So either the flame is not hitting the sensor, the sensor (powerpile or thermocouple) is bad, or the gas valve no longer will pick & hold in which case the valve is bad.

Dec 28, 2014 | Heaters

1 Answer

Change thermocouple burners goes off


Thermocoupling is not set properly. approximately 1/3 to 1/2 of the thermocoupling should be engulfed in the pilot flame. Best to use a meter and set the thermocoupling at approximately 30 millivolts. The pilot assembly and pilot oriface needs to be clean.

Feb 04, 2014 | Goodman GMS90703BXA Heater

1 Answer

I have a Dayton 3E290 wall heater that was installed new 30 years ago. The pilot light started to extinguish a few years ago. Gradually this began to occur more frequently. I've changed the...


The pilot assembly may need cleaned out and the orifice cleaned, also the gas valve may need to be replaced, to check for proper voltage from the thermocouple you need a flame source and it takes a meter that can register DC milliamps, and should be 350 to 750 millivolts. Heat the thermocouple with the pilot or other flame source and check, if OK, gas valve is weak.

Nov 02, 2011 | Dayton Gas Furnace Heater

1 Answer

Will lite but goes out within a min


Make sure the thermocouples not fully engulfed in flame, it needs to be on;y at the tip end as they operate via temperature differential acrosss the thermocouples surface, if the whole thinfs one temp it drops out electrically(makes 30 millivolts) and the electromagnetically operated pilot safety valve closes, thus stopping the main burners operatin as its sensing no pilot exists. try a new thermocouple, about 15 bucks, and set it as described in pilot flame, if that wont do it, the gas valves bad.

Nov 01, 2010 | Blue Rhino ES200209 Open Flame Gas Patio...

1 Answer

I go thru the process of lighting the pilot light following the directions exactly, but as soon as I let the pilot light switch pop out so that I can turn it to the left to light the heater the flame goes...


The system works off of a thermocouple that is heated by the pilot. The thermocouple creates millivolts that magnetize a head behind the control knob. When you push in the knob the magnetized head behind the knob holds the gas valve open. So obviously the head is not being magnetized. First make sure that the pilot is not plugged and the flame is large enough to heat the thermocouple. Also sometimes you may need to hold the knob for several minutes before the pilot will stay on. Also patio heaters have a safety feature that will cut the millivolt circuit if the heater falls over. It is possible that this safety device is tripped or defective causing the pilot to not stay lit. Also check for any loose wires on the millivolt system.

Dec 21, 2009 | Endless Summer UniFlame (GWU501E) Open...

1 Answer

Desa unvented propane log heater pilot will not stay lit


check to make sure that the end of the thermocouple is in the flame. This is the hot junction of the thermocouple and it the difference in temp that create the millivolts to operate the gas valve. If it is in the flame, replace it and if a new thermocouple doesnt fix it, you need a new gas valve

Dec 09, 2009 | Desa International Heaters

1 Answer

Pilot light won't stay lit when you try to turn control knob to thermastat. Is it the thermocoupler, the control valve or the pilot assembly?


Once your pilot is lit the thermocouple sends millivolts to the gas valve to tell it that the pilot is lit and to allow the gas valve to open. Check to see if your thermocouple is in the pilot flame. I f it is then you will need to replace the thermocouple.

John

Oct 03, 2009 | Heaters

1 Answer

Pilot light won't stay lit.


most common cause of the described symptom overheating the thermocouple! a thermocouple produces millivolts of electricity based upon a differential of temperature between the tip and the base. If it gets too hot it will not work correctly. If the pilot flame is too large or the main burner flame is contacting the thermocouple or the thermocouple is too cheap or old all can cause this issue.

Dec 18, 2008 | Heaters

2 Answers

Comfort Glow Vent-free Gas Heater CGN18B


the pilot light is operated off a millivolt generator. that is the small tube directly in the pilot flame. its purpose is to generate a small dc current which is connected to the pilot valve inside the main valve. setting the control to pilot opens just the pilot gas supply. when operating normally the millivolt generator keeps a small electromagnet pulled in that keeps the pilot gas supply open. if it don't work the pilot gas supply valve closes. replace the thermocouple.

Dec 04, 2007 | Heaters

Not finding what you are looking for?
Dyna-Glo D-E37 Wall Mounted Panel Heater Logo

Related Topics:

311 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dyna-Glo Heaters Experts

paulcarew

Level 3 Expert

1904 Answers

Dan Webster
Dan Webster

Level 3 Expert

8147 Answers

drifterray

Level 1 Expert

10 Answers

Are you a Dyna-Glo Heater Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...