It probably will not do damage (depending on what temperatures are actually reached, and for how long), but I would remove all of the water I could (shop vac is great for this, if you have one), and undo the lower unions on the pumps.
Even if damage is unlikely, it could cost a few dollars, not to mention headaches.
If you're not up to the D-I-Y, you should be able to hire a tech for this service, for (hopefully) a reasonable price.
