I have a Maple Chase Thermostat 9600 & a furnace which is adequate. There is a long delay between the time the furnace shuts off & when it turns back on. Is there a hidden setting in the TS which will allow a shorter time between heating cycles?

I am familiar with that series of tstat and it does not have cycle rate capablity. It does have a temp differential setting though. Make certain that is set to 1 degree. The manual is easy to find on the internet if you don't have it.