Page 66 - 2020 SDCA Project

The VRF system should work very well for all of the

smaller classrooms, labs, offices and production

spaces. These systems will require separate outside air

systems to introduce conditioned fresh air to the rooms.
These will be centralized and fresh air ducted to the

spaces through the ceiling plenums. We recommend

that these be tied into an energy recovery system from

the bathroom exhausts.

It has been noted that the existing steel bar joist roof

members may not be large enough to support roof

mounted HVAC equipment. There are many rooftop

units existing, but the new equipment may be

concentrated and thus larger than the existing. If this is

the case, then the equipment can be mounted on the
ground near the building, taking into account that

screening and sound baffling may be needed as well.

Some structural supports might also be added to

accommodate roof mounted equipment.

Dedicated Outdoor Air System with Energy Recovery

SDCA 66