just remember that the generic owner's manual really has NOTHING to do with your actual model.
none of them state where the water filter is, nor the water heater, nor the water pump, nor the converter, nor the inverter, nor the battery disconnect switch and on and on and on.
it makes generic statements that may or may not apply to your RV.
taking it for an official statement, that the filter needs to be changed every 12 months or after de-winterizing, is really up to you.
there's virtually nothing in the FR owner's manual that my HTT came with, that i would believe or follow.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC