Heat N Glo flame height

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bashr52

New Member
Nov 19, 2019
4
VA
Good Morning All.

We just bought and installed a Heat N Glo Slimline 5x we got as a great deal as a floor model from a company who was going out of business. We've had some issues to deal with (like being told it was all ready for LP when really it was NG), but overall it is installed and working. I replaced the valve body with one for an LP stove, and that has solved most of the issues, but we still have an issue with the flame height. The fireplace seems to be either on or off, with no regulation to the flame size at all. Using the remote I can dial it between high and low, the stepper motor turns the regulator, but the flame height does not change. Running it at the lowest setting last night for about 20-30 minutes caused the glass, brick, and logs to all turn black. The flame height is enough to touch the top of the stove enclosure. I have the dip switch set to LP, and the flame height switch set to low.

I'm thinking this may be an issue with to high of an incoming pressure setting? As a trial I partially turned the shutoff to restrict the flow to the valve body, and managed to get what I consider a more manageable flame height, but even then the setting between high/low does nothing on the remote.

The incoming gas is run from the main line after the regulator coming into the house from an underground 250lb tank.

Ideas?
 

DAKSY

Full Time RVer
Staff member
Dec 2, 2008
9,631
Wherever we're parked
Doesn't sound like you used a HHT APPROVED LP conversion kit.
There IS one designated SPECIFICALLY for this model.
That kit contains the LP regulator head, new screws & O-ring.
Did you change the burner & pilot orifices?
They should have been in the package with the owner's & installation manual.
You also need to pull the burner & open the air shutter to the dimension in the
install manual.
 

bashr52

New Member
Nov 19, 2019
4
VA
I used part number 2166-303. It is an official HHT part. I opened the air shutter as far as possible. There are two studs at the bottom of the shutter, one has a wing nut that can be loosened and the shutter slid open from below. It hits the rear stud at the back of the slot so I'm assuming it's fully open. Is there a burner orfice that needs to be changed to? Since this was a floor model and the place is out of business I didn't get anything with the unit, just the way it was installed in the showroom.
 

jsiets

New Member
Aug 16, 2018
42
Willmar MN
What is your gas pressure some of the Propane systems in my area are starting to run 2 pound systems like natural gas, due to the demand of the gas system in the house. I would start with that and verifying that you have the correct parts kit.

I would convert the original valve body with the proper part for it not one for a LP stove like your first post states sometimes things fit the way they should but do not have the same turndown ratio.

Does the venting follow the guide lines layed out in the Manual as well? improper venting can be another source of sooting issues?

Pictures are worth a thousand words also
 

bashr52

New Member
Nov 19, 2019
4
VA
I Just found a copy of the manual online and ordered the only 2 parts for an LP stove I have not replaced yet, the pilot and burner orifices. Once I get them installed I will report back if there is still an issue.

I did talk to the gas company and they already have the pressure to the house regulated to 1/2 psi.
 

bashr52

New Member
Nov 19, 2019
4
VA
Added the LP main burner and pilot. Flame height is now controlled, but now I think it may be on the low side. On high, the flame height is 1/2-3/4 the height of the logs.
 
Nov 14, 2018
3
Minnesota
Glad to hear that you got the correct LP parts installed and you are up and running now.

One thing you can try to increase the flame height is to close the air shutter for the burner slightly