Ventilation - Honeywell Home VisionPRO 8000 Manual

®
VISIONPRO 8000 WITH REDLINK™
Control Dehumidification Level
1. Touch MENU and select Dehumidification.
Fig. 223.
Dehumidification
Equipment Status
Fig. 224.
2. Select Auto.
Dehumidification
Off
Fig. 225.
 
3. Touch or to select humidity level.
4. Touch Done to save your settings. Touch Cancel to
ignore changes.
If your air conditioner is used to control humidity, the
thermostat may use the following methods to maintain
humidity:
• Cool from 1° to 5° F lower than your temperature
setting.
• Run cooling for the minimum "on" time to reduce
humidity.
• Run cooling and heating at the same time to reduce
humidity without lowering the temperature.
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
68-0312—06
MCR34100
MCR34130
Auto
MCR34131
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 dehu-
midification to operate at the same time, and there
is no deadband between humidification and dehu-
midification settings.

Ventilation

The thermostat can be set for the following ventilation
types: (ISU 1000)
• ERV/HRV
• Passive (Fan Only)
• Fresh Air Damper
Ventilation Control Methods (ISU 1005)
Ventilation can be setup to meet either ASHRAE or Percent
On Time settings. To meet these settings, the thermostat
will ventilate during calls for heat, cool, and fan. If the
required ventilation has not been achieved for ASHRAE or
Percent On Time, the thermostat will force the ventilation
equipment on.
• ASHRAE
The thermostat operates ventilation equipment to meet
the ASHRAE 62.2 ventilation standard based on CFM,
number of bedrooms, and square footage of the house.
ASHRAE 62.2 can only be met if the ventilation
equipment is running. If the ventilation equipment is off
for any reason (outdoor ventilation lockouts, set up to
turn Off during Sleep period, turned off by user, etc.),
ASHRAE 62.2 is not met during those times. See ISU
1012 to select a Ventilation Priority.
• Percent On Time
The thermostat operates ventilation equipment based
on a percentage entered in the installer setup (ISU
1012). For example if Percent On Time is set to 50%, the
ventilation equipment will run at random times during a
1 hour period until it reaches a 50% run time
(approximately 30 minutes). Default setting is 30%.
Range is 10% to 100% in 10% increments.
Ventilation Fan Control (ISU 1006)
• Tstat Controls Fan
The thermostat turns on the ventilator and the fan when
ventilation is needed.
• Equip Controls Fan
The thermostat turns on the ventilator when ventilation
is needed. The fan is controlled by the equipment.
Ventilation Priority (ISU 1012)
• Lockouts are Priority
The thermostat places a priority on lockouts versus the
ASHRAE 62.2 ventilation standard. The thermostat will
not run ventilation during the following lockout
conditions (if configured) unless you manually call for
ventilation:
— Lockout Ventilation during Outdoor Conditions (ISU
1013)
— Lockout Ventilation on Humidification or Dehumid-
ification Calls (ISU 1014)
— Lockout Ventilation during "Sleep" (Residential) or
"Unoccupied" (Commercial) program periods. Note:
This option is set by the user on the Ventilation
screen in the Menu.
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