10 PB
INTRODUCTION
FreshAire™ Conditioned Fresh Air
FreshAire, is a dedicated fresh air system that brings in up t o 35 CFM of outdoor air int o the VRP® unit. The FreshAire system
uses one fan to bring in fresh outside air into the the unit. The outdoor air passes through dedicated 6”x 6”x1” MERV 8 filter
that are easily replaceable from the front of the unit.
This outdoor air is mixed with the return air inside the unit prior to the main evaporator coils, reheat coil and heater. Because
of the variable speed of both the c ompressor and evaporator fan, the VRP can increase or decrease the unit’s capacity to cool,
heat or dehumidify the total supply air. The system uses a proprietary algorithm to measure the dew point of the leaving air.
As the system nears the room set point, the system will throttle back both the compressor and the supply air volume in order
to maximize the dwell time on the indoor coil to maximize dehumidification.
(Single speed systems cycle on and off, providing less dehumidification capacity and run time as well as encounter condensate
re‑evaporation when cycled off.)
Return Air
up to
35 CFM
Return Air
Filter
MERV 8 Outside
Air Filter
Supply Air
Outdoor Wall
Outdoor Air
Condenser
Exhaust Air
Figure 104
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