[A/S] Re: Intermittent furnace fault

[William Jacobs <bjacobs1@xxxxxxxxxxx>]

Nick,
I would think that since the water heater went out when the furnace
failed you ran out of gas.
If it was real cold, and your propane tank is about empty, there will
not be enough heat outside to vaporize the liquid into a gas.  I found
this chart one time

          30 LB. Cylinder - BTU AVAILABLE AT                        
% FULL                 60%       50%        40%        30%      
20%       10%
"Temperature"                              
20                    50400     45360     40320     35280     30240    
22680
0                     25200     22680     20160     17640     15120    
11340
-5                    17850     17010     15960     14630     11340     
8505
-10                   11900     11340     10640     10220      7560     
5670
-15                    5950      5670      5320      4410      3780     
2835
As you can see, if it is 20 degrees and your tank is near empty, a
30,000 btu furnace will run out of gas.
However in the morning when the temperature was about 45 degrees you
would have enough gas to run everything.

bill
25 ft Trade Wind in WV