Hello all, I'm in need of some help here. Last couple of years my Lennox Ebstnm-2 fireplace insert has been giving me fits with lighting it. My house is plummed for gas but the only thing connected to use gas off a propane tank is the fireplace. Last year I couldn't even light the fireplace, which since I had the tank disconnected over the summer I figured bugs moisture whatever got in the outside line and might of clogged the line. So I thought I'd blow the line out, I disconnected inside and blew from inside to the outside, got some stuff out, well it still wouldn't light very well, so I then screwed up and forgot to disconnect the lp valve at the fireplace and blew air from outside to inside. Well needless to say, I got the fireplace to lighting now but its a flametorch now. I'm trying to get this thing ready for this winter so I thought I'd give it another go. I'm a mechanic so I allready guessed I blew a diaphragm from last years stupidity. So I unscrewed the top cover which houses the inlet and outlet valving. Sure enough the inlet is a springloaded plastic disc with a rubber diaphragm, the diaphragm is ripped.
Okay then, I have looked all over the internet to replace the inlet valve, and can't find any kind of overhaul kit, probably because the sticker on the top cover says this unit is not field serviceable, yes I can read that, I'm not adjusting pilots or orfices, I just wanted to replace a 1.25 rubber piece.
I'm coming to the conclusion for liability reasons, I'm gonna be S.O.L. so my next option is to replace the gas valve itself. I am not sure what I'm suppose to replace it with.
Here is what I know.
Valve is a SIT-820 NOVA mv
model # 0820635
It's labeled For Natural gas only but it has a sticker on top saying it has been converted from NG to LPG using sit converstion kit 0.907.202
I find a lot of NG sit 820's on the internet, but with different model numbers like 0820636, 0820651, etc, etc. If I can't put a new inlet valve/diaphragm in this thing what gas valve am I suppose to replace it with. The conversion kit I looked up online looks like just a new regulator and gasket, should I just swap that over to a new NG sit 820 valve, do I have to buy a new conversion kit?
Any and all help would be great before it starts getting cold, thanks much. I appreciate it.