Just one night around 30, with warming up during the day, you should be fine, even with no heat. Disconnect the outside fresh water hose so it does not freeze overnight and maybe break. Open the inside taps to relieve the pressure in the water system in case you get some ice developing in the lines somewhere(probably won't). Just my 2 cents...
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Chris
2014 Keystone Outback 210TRS
2020 F150, 3.5l, 4x4, 3.55:1, Supercrew
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