BJ, I think you should keep watering those beans. Try giving them water during the afternoons. Overhead water will help keep them cool. Maybe an oscillating lawn sprinkler will be easiest. Just set it at a good place and turn it on daily for as long as checking on it shows you need to have it on.
Trying to remember which kind you have. Were you the one with the Black Coco?
One year way back I fertilized my Beans a bit too much with Osmocote. I don't use it anymore. But the beans grew ok after all. Their leaves were many, sort of small and rounded, and too deep a green color. They also kind of rolled back making them look even more rounded. They turned out ok though. The first flowers did not take, then they made a huge flush of flowers.
But old manure should not be too bad for them. Just, Beans don't seem to need much in the line of fertilizer, oh, I guess for most soils. Some soil can be deficient in some nutrients, but usually working in a little bone meal fixes that. In fact, I think that I'll work in my bone meal after the garden is done, not right before seeding. Just enough and early enough to let it mostly feed the soil more than the actual plants.
I find that some varieties tolerate the hot heat better than other varieties.
Oh. I was picking dry pods this morning and saw that Ora's Speckled, a variety I got from Journey, has made a good number of really delicious looking Cutshort pods. They were hiding in the vines.

Yes, Ora's Speckled's pods look different than Greasy Grit. They just look better. About the same size, much less marking on the pods, and they fill out better. Ora's Speckled are getting a nice soft buttery yellow just at what should be picking stage for beans n bacon. Resisting temptation to pick any for eating though. I want their seeds!
White Seeded Kentucky Wonder will have dry pods probably in a week or so. Experience tells me those huge foot plus long pods take awhile to dry. One has yellowed so far. Mccaslan is a bit behind them.