What I've done for 20+ summers installing sod late summer:
2x per day watering. First run time start around 4:00 AM. Second run time start around 4 PM.
*The key to watering new sod is keeping it from drying out. Watering it too much does no good... just wastes water. The sod has no roots at this point.
I'm not sure what type of heads you have, so my general advice is to water it long enough to soak through the sod & get the ground underneath wet. Typical run times would be around 12-15 min. in the morning & afternoon for sprays, and 20-30 min. per run time with rotors. This will vary on sun exposure, slope & soil type. There is no "one size fits all". If you sod is really struggling with the above schedule, add a 3rd run time late morning & reduce the run times a bit.
I'd keep the above schedule for 10 days.
After that, increase the run times & dial back to one start time per day, every other day for another 10.
2-3 times per week should be sufficient after 20 days.
Your general goal is to increase the duration & decrease the frequency of watering as root growth progresses. Deep, infrequent waterings are best to encourage good root growth.
Don't fertilize in this heat either! Never fertilize new sod in general for at least 60 days after installation. They are fertilizing heavily at the sod farms, so you don't want to run the risk of burning it with nitrogen.
Good luck!