13
WSHP-PRC004-EN
Features and
Benefits
Hot Gas Reheat (option)
For true atmospheric conditioning and
climate control, Trane provides accurate,
cost effective dehumidification control
through a hot gas reheat option. This
option is designed to accommodate the
size 009 console configuration.
With this reheat option, the return air
from the space is cooled by the air-to-
refrigerant coil, then reheated by the
reheat coil to control not only space
temperature, but to also reduce the
relative humidity of the space. The
amount of moisture removal of a specific
heat pump is determined by the unit’s
latent capacity rating.
When operating in the reheat mode, the
humidistat signals the reheat relay coil to
energize, allowing the high pressure
refrigerant gas to flow from the
compressor, through the reversing valve,
into the reheat valve, for passage
through the reheat coil.
See Figure FB-24
for the reheat conditioning schematic.
Figures FB-25 and FB-26 show the basic
heating and cooling cycle of the console
piped with the reheat option.
Common reheat applications include:
•
Conditioned-air delivered directly to
the space
•
Auditoriums, theaters, classrooms or
where a large latent load exist
•
Computer room space conditioning
•
Anywhere humidity control is a
problem
Figure FB-25 – Cooling Mode for Console Unit Piped With Hot Gas Reheat Option
Figure FB-26 – Heating Mode for Console Unit Piped With Hot Gas Reheat Option
Figure FB-24 – Reheat Conditioning Schematic
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