Read manual in house 1992.
http://i1138.photobucket.com/albums/n540/MP96100/Hike%2026-30%20October%202011/26-30October2011106.jpg?t=1320673485
http://i1138.photobucket.com/albums/n540/MP96100/Hike%2026-30%20October%202011/26-30October2011107.jpg?t=1320673958
http://i1138.photobucket.com/albums/n540/MP96100/Hike%2026-30%20October%202011/26-30October2011108.jpg?t=1320674408
Hot furnace in house.