Changes

The coach is equipped with a permanently mounted 43.5 gallon (148 pounds of fuel-net) LP gas tank which is the energy source for the range, three gas furnaces and alternate source for the refrigerator. A piping diagram of the LPG system is shown in Section X.  

The coach is equipped with a permanently mounted 43.5 gallon (148 pounds of fuel-net) LP gas tank which is the energy source for the range, three gas furnaces and alternate source for the refrigerator. A piping diagram of the LPG system is shown in Section X.  

=== LPG Tank and Controls ===

===LPG Tank and Controls===

The LPG supply tank is located in a curbside compartment as shown in figure 6-1 . LPG system controls include a main gas service valve, two stage pressure regulator , filler connection with Auto Stop {80%) fill valve, 20% vapor (stop filling when liquid appears) valve, and the pressure relief valve. Down stream of the pressure regulator is a solenoid operated shut off valve.  

The LPG supply tank is located in a curbside compartment as shown in figure 6-1 . LPG system controls include a main gas service valve, two stage pressure regulator , filler connection with Auto Stop {80%) fill valve, 20% vapor (stop filling when liquid appears) valve, and the pressure relief valve. Down stream of the pressure regulator is a solenoid operated shut off valve.  

A flexible hose from the two stage pressure regulator connects to tubing which carries the LP gas to the electrical solenoid shutoff valve, and manifold to individual appliances. The solenoid valve is actuated by either a high pressure condition (caused by a defective regulator), or by the remote LP leak detector , located below the refrigerator door. Tank level can be monitored at the Systems Monitor panel. To read the digital display , press the Propane Tank button .  

A flexible hose from the two stage pressure regulator connects to tubing which carries the LP gas to the electrical solenoid shutoff valve, and manifold to individual appliances. The solenoid valve is actuated by either a high pressure condition (caused by a defective regulator), or by the remote LP leak detector , located below the refrigerator door. Tank level can be monitored at the Systems Monitor panel. To read the digital display , press the Propane Tank button .  

=== Regulator Replacement - (USER UPDATE: ''not from original manual'') ===

===Regulator Replacement - (USER UPDATE: ''not from original manual'')===

In 2019, we noticed a strong gas smell outside our 1989 WB 40 near the LP bay. Luckily, I was able to quickly locate the leak with some soapy water in a spray bottle. The leak was coming from a rubber gasket between first and second stage of the regulator ''(See Picture A)''.  The regulators that Blue Bird originally installed are obsolete, so I replaced mine with a '''FISHER''' '''R232A-BBFXA 1/4 INLET 1/2 OUTLET''' ''(see picture B)'' '''t'''hat I found on eBay. Keep in mind that the life span of the diaphram in these regulators is around 20 years on the high pressure side, so if your coach is getting up there in age, you'll want to have a spare regulator onboard.

In 2019, we noticed a strong gas smell outside our 1989 WB 40 near the LP bay. Luckily, I was able to quickly locate the leak with some soapy water in a spray bottle. The leak was coming from a rubber gasket between first and second stage of the regulator ''(See Picture A)''.  The regulators that Blue Bird originally installed are obsolete, so I replaced mine with a '''FISHER''' '''R232A-BBFXA 1/4 INLET 1/2 OUTLET''' ''(see picture B)'' '''t'''hat I found on eBay. Keep in mind that the life span of the diaphram in these regulators is around 20 years on the high pressure side, so if your coach is getting up there in age, you'll want to have a spare regulator onboard.

Make sure your replacement regulator is a (2) TWO Stage that is able to handle tank pressure, since it can be as high as 235 PSI on a hot day traveling down the road.

Make sure your replacement regulator is a TWO Stage that is able to handle tank pressure, since it can be as high as 235 PSI on a hot day traveling down the road.

The second stage regulator is made to have a high pressure regulator installed before it and the correct output of the second stage is 11-14 inch water column (~0.4 PSI).  Initially I was confused, since all the regulators look very similar to each other. Always check the tag on the regulator that you are going to install for proper information.  In my case, the trailing letters '''FXA'''  were important because they indicated the direction of the vent.  By code, vents are supposed to be pointing down when the regulator is installed.

The second stage regulator is made to have a high pressure regulator installed before it and the correct output of the second stage is 11-14 inch water column (~0.4 PSI).  Initially I was confused, since all the regulators look very similar to each other. Always check the tag on the regulator that you are going to install for proper information.  In my case, the trailing letters '''FXA'''  were important because they indicated the direction of the vent.  By code, vents are supposed to be pointing down when the regulator is installed.