Control Dehumidification Level; Dehumidification - Commercial - Honeywell TH8320R1003 Vision Pro 8000 Product Data

®
VISIONPRO 8000 WITH REDLINK™

Control Dehumidification Level

1. Touch MENU and select Dehumidification.
Dehumidification
Equipment Status
2. Select Auto.
Dehumidification
Off
3. Touch or to select humidity level.
 
4. Touch Done to save your settings. Touch Cancel to
ignore changes.
NOTE: If your air conditioner is used to control humidity,
the temperature may drop up to 3° F below your
temperature setting until humidity reaches the
desired level.
NOTE: If humidification and dehumidification are setup
to operate in the same system mode (Heat, Cool,
Off) and you are sensing humidity from one loca-
tion, the thermostat will automatically enforce a
15% deadband between the humidification and
dehumidification settings. The thermostat will
automatically switch between humidification and
dehumidification to maintain the desired humidity
level.
If humidification and dehumidification are setup
to operate in the same system mode (Heat, Cool,
Off) and you are sensing humidity from two differ-
ent locations using a remote wireless indoor sen-
sor (for example, main level and crawl space), the
thermostat will allow humidification and dehumid-
ification to operate at the same time, and there is
no deadband between humidification and dehu-
midification settings.
68-0312—01
MCR34100
Fig. 205.
MCR34130
Fig. 206.
Auto
MCR34131
Fig. 207.

Dehumidification - Commercial

The thermostat reads the indoor humidity level and allows the
user to set a dehumidification setting. The thermostat controls
the humidity level using the cooling system or a dehumidifier.
If humidification and dehumidification are setup to operate in
the same system mode (Heat, Cool, Off) and you are sensing
humidity from one location, the thermostat will automatically
enforce a 15% deadband between the humidification and
dehumidification settings. The thermostat will automatically
switch between humidification and dehumidification to maintain
the desired humidity level.
If humidification and dehumidification are setup to operate in
the same system mode (Heat, Cool, Off) and you are sensing
humidity from two different locations using a remote wireless
indoor sensor (for example, main level and crawl space), the
thermostat will allow humidification and dehumidification to
operate at the same time, and there is no deadband between
humidification and dehumidification settings.
Dehumidification Equipment Options: (ISU 900)
• A/C with Low Fan
• A/C with High Fan
• Hot Gas Bypass
• Dehumidifier
NOTE: Hot Gas Bypass - During a call for dehumidifica-
tion, the cooling capacity will be used to remove
more latent heat than sensible heat. The operation
of Hot Gas Bypass varies by equipment. For more
details, contact the equipment manufacturer.
Dehumidification using the Cooling System
Dehumidification using A/C with Low Speed Fan, A/C with High
Speed Fan or Hot Gas Bypass, has the following methods of
dehumidification control (ISU 908):
Basic (ISU 908): This option uses the cooling system to reach
the desired humidity level. Minimum On Time, Cooling Droop
and Reheat are not used with this method. This setting is
commonly used if your dehumidification equipment is Hot Gas
Bypass.
Minimum On Time (ISU 908 and 909): This option ensures
that the compressor runs long enough to effectively reduce
humidity when the cooling equipment is cycled on. The
compressor will run for the minimum "on time" you set until the
desired humidity level is reached.
86
Fig. 208.