I have the '12 JayFlight 26 BH and what KRV shared is correct for mine too.
I am sure you are aware, but just in case, when you santize don't have the City Water connected, or rather turned on. You need the pump to pressurize the FW tank to circulate the bleech solution throught the entire plumbing system. Same thing for when you flush the solution out.
Not sure how large your FW tank is, but ours with water heater is ~90gals...its takes more time than you may think to santize. My first time I let the solution sit over night, then about an hour before we where going to leave on trip I thought I could flush the solution and go---WRONG It took several fills and dumps to get all the bleach out of the system. It takes a long time to dump ~90gals of water from the low point drains. :-) Needless to say we left several hours later than planned.
If possible it may help to santize while on a sewer hookup. Much faster to drain the FW tank by opening the faucets and let it drain through the grey tank.