Infinity control questions

Hi I am dkirkey28 and I am new to this site.

We have purchased a Carrier Infinity system.

The furnace is a 96 model-58mvb100-120 (variable speed )

[b]ran for years with a programable batery back up thermostat

This year we had installed a infinity48,000 btu model 24anb748

With n coil-cnpu481 and a infinity-systxccuid01-v/with software131502-2c

I have some simple questions:

1-because there is no battery-- if the thermostat is programed- min (60 deg.)-On hold-

We go of on vacation for two weeks. Its winter and the outside temp.

Dropes to 5 below ( and power -ac)-is lost due to a storm for 5 days

When the power comes back on - ac to the house-what will the thermostat run the

The heat at.?

2-the air conditioner is two stage-- how many btu's is there when stage 1 is running ?

--HOW MANY BTU'S IS THERE WHEN STAGE 2 IS RUNNING