Author Topic: mercury flame sensor replacement  (Read 966 times)

Offline alfred67

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mercury flame sensor replacement
« on: December 12, 2017, 08:36:23 AM »
Hello

I own an Insta-flame natural gas fire place Model DV36RN Serial 06n1739 and the Mercury switch don't work is there a Valve and pilot assembly change-out available?

Any help will be appreciated

Alfred67

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Re: mercury flame sensor replacement
« Reply #1 on: December 12, 2017, 09:03:03 AM »
Try Target Wholesaler,

1-866-982-7438

Offline alfred67

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Re: mercury flame sensor replacement
« Reply #2 on: December 12, 2017, 11:57:15 AM »
When I call target-wholesale they said there is valve and pilot assembly change out but will not sell or give me part numbers to me because I have to be a licensed gas fitter.


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Re: mercury flame sensor replacement
« Reply #3 on: December 12, 2017, 04:57:42 PM »
A mercury switch?  Does your pilot assembly look like the one in the picture below?

Offline alfred67

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Re: mercury flame sensor replacement
« Reply #4 on: December 12, 2017, 05:16:21 PM »
Nope, I attached a pic my pilot assembly and gas valve

Thanks

Alfred67

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Re: mercury flame sensor replacement
« Reply #5 on: December 12, 2017, 05:40:52 PM »
Thermopile #26D0566
http://www.ibuyfireplaceparts.com/26d0566-thermopile-750mv.html

Electrode #50931
http://www.ibuyfireplaceparts.com/50931-electrode-igniter-rs.html

Piezo Ignitor #50932
http://www.ibuyfireplaceparts.com/50932-ignitor-piezo-w-nut-sit.html

Pilot Assembly (Natural Gas) #512826
http://www.ibuyfireplaceparts.com/51826-pilot-nat-rs.html

Gas Valve (Natural Gas) #7529109
http://www.ibuyfireplaceparts.com/7529109-nat-valve-all-pi-robertshaw.html

I think there's an option to use an SIT valve as well, but then you need a thermocouple and thermopile.


Offline alfred67

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Re: mercury flame sensor replacement
« Reply #6 on: December 12, 2017, 05:59:20 PM »
Thank you!! So does this mean I don't need a Mercury flame sensor anymore??

Aflred67

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Re: mercury flame sensor replacement
« Reply #7 on: December 13, 2017, 04:09:54 AM »
The problem is they were discontinued and hard to find.

Offline alfred67

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Re: mercury flame sensor replacement
« Reply #8 on: December 13, 2017, 07:13:46 AM »
I did manage to find a mercury switch in the USA. My intent was to switch out my gas valve and Pilot Assembly to eliminate the need for the mercury switch. So hopefully in the future parts would be easier to find.

With the above parts will this eliminate the need for a mercury switch??

Alfred67

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Re: mercury flame sensor replacement
« Reply #9 on: December 13, 2017, 07:55:31 AM »
Yes, the gas valve I listed does not use a mercury switch.  It uses a thermopile only.

Offline alfred67

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Re: mercury flame sensor replacement
« Reply #10 on: December 13, 2017, 12:40:45 PM »
Thank you for all your help

I did find some cheaper prices. Can you check the parts below to see if they can be used 

Pilot Assembly and Thermopile
https://www.fire-parts.com/collections/pilot-assemblies/products/18-thermopile-only-pilot-assembly-natural-gas

Gas Valve
https://www.fire-parts.com/collections/control-valves/products/dexen-robertshaw-millivolt-valve-no-turndown-natural-gas


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Re: mercury flame sensor replacement
« Reply #11 on: December 13, 2017, 04:19:27 PM »
I can't be 100% certain that valve will fit and line up perfectly.  The one I linked to was listed as a replacement for your model of fireplace.

BTW that gas valve is for use with propane, not natural gas.

Offline walker

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Re: mercury flame sensor replacement
« Reply #12 on: September 11, 2018, 12:55:27 PM »
what is that little thermocouple looking thing called.  I have a heatilator fireplace that needs one.  The part breakdown I have on the unit does not show the part of the one I was working on.  Not even the manufacturer could locate it for me,  they asked me to contact a dealer.

Heatilator
CGC150

Offline slo-115

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Re: mercury flame sensor replacement
« Reply #13 on: September 11, 2018, 01:05:37 PM »
Thats the sensing bulb for the mercury switch. I doubt you will be able to find one.

Offline walker

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Re: mercury flame sensor replacement
« Reply #14 on: September 11, 2018, 01:11:49 PM »
Yeah I've heard that.  Probably have to get a retrofit kit for it if there is one.

Offline slo-115

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Re: mercury flame sensor replacement
« Reply #15 on: September 11, 2018, 01:36:39 PM »
I know a guy, who wired a GM turn signal flasher in place of the mercury switch. Apparently its the same resistance as the flame up against the bulb. The odd thing is the mercury safety switch is a redundant safety. Those utilize the generator as the flame safety. For the record that gentlemans fireplace was replace with a new unit.

Offline walker

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Re: mercury flame sensor replacement
« Reply #16 on: September 11, 2018, 02:31:37 PM »
I found a retrofit kit for it, not cheap, but cheaper than a new fireplace

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Re: mercury flame sensor replacement
« Reply #17 on: September 11, 2018, 02:59:39 PM »
The SRV-MERCUPKIT?

Keating 038563 FLAME SWITCH is another cheaper alternative that may work.

Offline walker

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Re: mercury flame sensor replacement
« Reply #18 on: September 11, 2018, 03:16:48 PM »
Not sure what the part # is.  A fireplace supply house in my area said he's got one that will work.