My Regency is a "92" and as with many older things (including me) things wear out. Last summer the solenoid that opens and closes the propane feed to the coach began to periodically close with out being turned off. I decided to replace the entire unit (alarm and solenoid).

The company that originally made the old unit is now out of business. Fortunately, another company came to the market and now produces an alarm to replace it. MTI Industries, Inc. out of Volo IL.

www.safe-t-alert.com

The unit listed for $285.00, but my RV Supply dealer gave it to me for $250.00. The alarm is both a propane monitor as well as a carbon monoxide monitor with a solenoid. The install was fairly straight forward. The original flex cable that was connected to the tank shut off was frozen and also needed replacement. SS White manufactured that part. I am in discussion with them now to replace that as well.

www.sswt.com/index.htm

Barth must have bought a bunch of these cables to use when needed. The one in my coach was 60" long and should have been only about 36" long. It had a big loop which restricted its operation. It never turned from the time in bought the coach in 2003. I turned off the propane by turning off the alarm. The new alarm cannot be turned off unless you shut down the 12 volt power to the coach, so I will need a new cable.. When I have received the new cable and have it installed, I'll update this post.

Once the cable was removed from the shut off, I could turn the post on the valve and shut off the gas. Coming out of the shut off valve is a manifold with a universal quick connect (LH thread) which feeds the propane regulator then flows into the solenoid, the a flex hose connects to the solenoid to feed the system.

I removed the flex hose and then broke loose the quick connect. Once this manifold was off the tank, I took it into the shop and used my machinist vise and large adjustable wrench to spin off the old solenoid and other connections I would be replacing. I also removed the short nipple that came out of the regulator between the regulator and solenoid. I wire brushed off all the old paste and goop from the nipple and careful cleaned the end of the regulator. Do not use teflon tape to seal the threads, rather use a pipe thread paste designed for sealing gas.

I carefully pasted up all the parts and assembled the solenoid on to the regulator. The new alarm kit contained 3/8" pipe to 1/2" pipe adaptors. this was necessary to use in my system. Returning to the coach, I threaded the manifold back on to the shut off. I then attached the flex hose.

The new alarm is slightly taller than the old one and required re-cutting the old opening in the cabinet. My alarm is located just inside the door at the base of a cabinet near the floor (recommended location as propane is heavier than air and will settle low in the coach. My wiring diagram was simple and easy to read. I'll not discuss that here as yours may be different. Once the alarm was re-wired and connected to the solenoid, I turned on the gas and checked for gas leaks with soapy water.

All went well and the new alarm and solenoid are working well. I did need to tighten the quick-connect a little more as I did have a slight leak.

Excellent detail, Bill. Will be a big help to somebody else (if they bother to SEARCH) when they have the same problem.

Do you use a battery disconnect or are the detectors and alarms disabled somehow when the coach is not in use? I have found the co and propane detector in my camper (hard wired) will discharge my batteries within a couple of weeks unless I use a disconnect.