I've noticed that my Intelliflow pump works nearly twice as hard when the heater is in circuit. I already have a manual bypass valve in place and an spare actuator. I'd like to program the panel to bypass the heater when it's not in use. I can see a couple of "straight forward" ways of doing it, but the sticking point seems to be the need to let the heater cool down after it shuts off. There is already a pre-programmed mechanism to keep the pump running for a few minutes after the call for heat has ended. Is there a way to get similar behavior from a valve?