I have some questions--What is the top water hook up for? I know the bottom line is for the Black tank flush and the second from the bottom is for city water hook up (with valve option to fill water tank). What is the top (3rd from bottom)water hook up for?. I hooked it up and it filled the water tank, and I cannot understand why when the city water hook up has the water tank fill option.
Also, has anyone with the fireplace had a proplem with fan noise? Is there an air intake and is strong winds causing the noise? Just every once in awhile the fan on the fireplace will be very loud for maybe 10 to 15 seconds. Any ideas?