I mounted a Xintex S2A dual sensor unit and placed one sensor under the stove where the gas would settle if a leak at the stove and another sensor back in the lasorette at the bottom where the line comes in through a grommet. My thinking was place the sensors where there could be leakage from abrasion to the hose or fitting fatigue. Also the only point of open flame for iginition would be the stove, second reason for a sensor there. No smoking on my boat, not even the deisel is allowed to smoke....
The mounting instructions were clear on not modifying the cable length for the sensors, they are calibrated at the length as manufactured.
I installed a small 3" bilge fan with flex hose that ran down next to the diesel engine to get the hot air and diesel fumes out of the engine compartment. The 2GM20 had a small leak at the fuel filter bleed screw that needed a new compression washer. The smell is long gone, the fan just helps ventilate the engine compartment.
You may need to add a ventilation fan to the bilge and run it all the time. Small muffin fans commonly used to cool computer cases are low power consumers and can be adapted.
Check the sensors by raising them out of the bilge into the salon and see if they also alarm, if they do try placing the sensors in a plastic bag filled with outside air, no possibility of fumes....
There is the possibility that the sensors were modified in cable length, are bad, or the controller is bad.
Attachment is of my electrical panel, the stove breaker goes to the Xintex controler only.
Cal 9.2 #19 SilverSwan
Last edited by roline; 09-13-2009 at 10:31 AM.