Not familar with the system, but googled and took a look. Where do you think the noises are coming from? Do you have the fan coils? Is it motor noise? Or do you have gurgling noises? Gurguling usually is an indicator there is air in the system (As you already knew). If you have the installer come out, have him show you where the air removal components are? They are usually located where the makeup water enters the system?

Need a little more info,

Dan Martyn

chefnewbie, it is just about impossible to diagnose a noise issue in a forum. A detailed description might help but even then you can't expect much. Like Dan attempted to explain, the source of the noise could be from any of a number of things.

Thanks both of you.
Sorry if you thought I was asking for a diagnosis of the noise issue. I really just need a little feedback from those who have this type of system as to whether they hear noise (bumps, bangs or pops) when the heat comes up.
It really sounds like a hot water system, rather than an air system.
Thanks again

Sounds like a hot water boiler using cased coils for warm air heat.

Besides air, look for tightly strapped hot water pipes and fittings that have no room to grow when they expand. Many times this can be drilled holes through joists, pipes that are strapped to surfaces versus suspended and so on.