coolant question from CO

[guysmalley]

Hi
we are in Breckenridge CO loving it. Tiger Run RV resort which is great.
The BB is running good after settling in I notice the secondary coolant hoses
that go to the
heating system was leaking, the main hoses are fine it is har to see which hose
is leaking.
my question the engine is running cool so if i close the values (4) to the
heating system am I
ok to run the coach? as I mentiom the main hoses to and from the engine &
radiator are fine.
I would prefer to work on her at home. I have a silver 92 v8 tubo
any thoughts?

guy smalley
86 pt 40