Natural Gas Regulator Advice Needed

[two]

New to forum. Help please.

Have wood burning fireplace converted to gas logs with regulator (Maxitrol R400S) between gas meter and fireplce gas on/orr valve. Gas input to regulator is 2psig.

R400S regulator failed and was replaced with Maxitrol 325-3L. Prior to replacement, fireplace worked fine. Now have smell of burning plastic.

Research indicates that gas log fireplaces require 3.5-7" Water Column which the R400S provided, but the new 325-3L provides 7-11"" WC which may be providing incomplete combustion.

I want to install a 3-6/7" WC regulator but am told they are not available for a 2psi input, only for 1/2psi input.

So some questions:
1. Is 7-11" WC too high for a log fireplace?
2. Is there a 2psi input regulator will provide 3-6" WC?
3. If no such regulator, what can be done to get to 3-6" WC?

Thanks in advance.

 

[John Gayewski]

Have you tried adjusting your regulator down? Most times they can be adjusted lower. Or usually you can buy a different spring for your existing regulator and it will adjust down.

 

[Sponsor]

 

[Breplum]

Our regulator suppliers usually can help us find and build the right regulator. that is the best way to go.
but:
1. Is 7-11" WC too high for a log fireplace? Yes, likely, usually mfrs include regulator that takes it down to 3-6" WC (readily available)
2. Is there a 2psi input regulator will provide 3-6" WC? See my top line comment.
3. If no such regulator, what can be done to get to 3-6" WC? We NEVER want 2" PSI in a dwelling, too dangerous if there is a fire. We (UPC etc) want 7-11" WC running inside a house, then a small regulator at the appliance (same with most cooktops).

 

[Bgard]

The 325-5 regulator is designed for 2-5 PSI inlet pressure, if you’re house is only supplied with 7 IWC /1/4PSI the 325-series of regulators will not operate properly, the R400s is designed for 1/4 1/2 PSI / 7- 14 IWC , why did you replace the R400 with the 325 series? The R 400s is designed for precise pressure control at low volumes of flow