Winterizing a park model

[giannit]

Hi all,

I am planning to winterize my park model Mallard trailer by blowing out the plumbing with a compressor. I have found some good info on the subject already but I am hoping someone can clarify the issue of bypassing my water heater (WH).

I am pretty sure my unit does not have valves to bypass the WH. Also I am not going to use antifreeze in the process. I will just add it to p-traps and toilet.

So hear is my question:

Since I don't have a by pass, should I just put the plug back in place and blow out my lines from the city water inlet?

Logic tells me yes but I need to be sure that I am not missing anything.

Thanks

JT