After having a contractor do manual J to determine the tonnage for AC in
two bedrooms and a large family room, I would like to know the problems and
issues if the system is to be zoned with individual stats and motorized
dampers to control the bedrooms and/or the large family room, either
individually or together. The tonnage was calculated for the entire load. If
only part is being cooled, would a multi or variable fan be called for?
Would the higher or lower air flow affect the refrigerant pressures? Would
the capacity for the whole system be too much for only one zone thus
affecting the dehumidification capabilities. Hopefully someone from alt.hvac
will have some input. This will be a split system for cooling only. Heat is
oil fired hot water. Thanks for any thoughts. Mark S.