You don't say what model Hurricane. However, The furnace is fed from the propane tank. To turn on the furnace set the wall mounted heat/cool switch to heat. Then slide the temperature setting to any temperature higher than what it is inside say 80 or 85. If everything is working properly and you are standing in the kitchen soon you should hear a fan motor running followed shortly by a clicking and the burner cranking up. After you feel heat coming from the floor vents set the thermostat slider to whatever temp you desire. In my unit the furnace is under the storage area under the sink.
On my Hurricane there is a red plastic switch by the couch on the side of the kitchen/sink cabinet use to turn on the WH. Flip it and it should lite up momentarily and go back off. You should be able to hear the water heater from there assuming it is in the same place as mine (under the fridge). Otherwise go outside to where the wh is and you should hear it running. If the light comes back on then it did not start properly. Turn it off wait a few minutes and try again. See note below about the stove.
The PO of my 30Q installed a Hot Rodd electric kit and installed the switch in the access panel under the fridge. So mine runs on both electric and/or gas.
If your propane appliances have not been run in a while you may have trouble starting them as air may have gotten in the lines. So start by lighting the stove and make sure the propane is flowing properly.
Do you have a manual for your Hurricane? Thor has old copies available on their website in PDF format. Not for your 2000 but for later models that are still valid for most if not all onboard systems.
2016 Newmar Bay Star Sport 3004
2015 Jeep Wrangler 2DR 4WD Sahara, Automatic, Hard Top