VisionPRO 8000 Spec Sheet 2017

VISIONPRO
®
8000 WITH REDLINK™
93 68-0312—05
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.
• ASHRAE is Priority
ASHRAE requires additional ventilation following a long
off cycle. The thermostat meets the ASHRAE 62.2
ventilation standard by running additional ventilation
when outdoor conditions are favorable. If ASHRAE
cannot be met when outdoor conditions are favorable,
the thermostat will override the outdoor lockouts and
run ventilation. When using this option, it is
recommended to increase the rate (CFM) of the
ventilation equipment to meet the ASHRAE 62.2
ventilation standard in a shorter run time.
NOTES: ISU 1014 Lockout Ventilation on Humidification
or Dehumidification Calls is not an option when
you select ASHRAE is Priority.
The ability to lockout ventilation during the “Sleep”
or “Unoccupied” program periods is not an option
when you select ASHRAE is Priority.
Ventilation — Outdoor Condition Lockouts
(ISU 1013)
Ventilation will not operate when outdoor conditions
exceed the lockout settings unless you manually call for
ventilation or Ventilation Priority (ISU 1012) is set to
ASHRAE is Priority and ventilation is needed to meet
ASHRAE. Lockouts can prevent ventilation during extreme
weather conditions to keep humid, hot, and cold air out of
the home.
NOTE: This feature requires an outdoor sensor.
If the outdoor sensor also measures humidity, ventilation
will not be allowed when the outdoor dewpoint is above the
level you set. Options are:
• Ventilation Low Temperature Lockout Setpoint
(Off, -20° to 40° F)
• Ventilation High Temperature Lockout Setpoint
(Off, 80° to 110° F)
• Ventilation High Dewpoint Lockout Setpoint
(Off, 65° to 85° F)
Refer to the information below if you need assistance
setting the High Dewpoint Lockout.
• Higher than 80: Extremely uncomfortable
• 75 to 80: Very uncomfortable
• 70 to 74: Quite uncomfortable
• 65 to 69: Somewhat uncomfortable
Ventilate on High Indoor Humidity (ISU
1016)
If set to ventilate on high indoor humidity, the ventilator
turns on to remove excess humidity if the indoor humidity
is 10% above the Humidification setting. The thermostat
must be in the heat mode to ventilate on high indoor
humidity.
Set up Ventilation
Some screens shown in this section may not appear on the
thermostat, depending on how you set up ventilation.
1. Select the Ventilation Type in ISU 1000. See Fig. 226.
Fig. 226.