Set Up Ventilation - Honeywell TH8320R1003 Installation Manual

®
VISIONPRO 8000 WITH REDLINK™
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.
2. Select the terminals wired to the Ventilator (or Fresh Air
Damper). See Fig. 227.
68-0312—03
Fig. 226.
Fig. 227.
3. Select the Ventilation Control Method. See "Ventilation
Control Methods (ISU 1005)" on page 91 for more infor-
mation. See Fig. 228.
4. Select the Ventilation Fan Control. See "Ventilation Fan
Control (ISU 1006)" on page 91 for more information.
See Fig. 229.
NOTE: ISU 1006 is only displayed if the Ventilation
Type is ERV / HRV. The thermostat controls the
fan if the Ventilation Type is Fresh Air Damper.
5. If ASHRAE was selected for ISU 1005, select the Num-
ber of Bedrooms and Size of House. See Fig. 230.
6. If ASHRAE was selected for ISU 1005, enter the Equip-
ment Ventilation Rate (CFM). Be sure this setting corre-
sponds with the actual ventilation speed. This setting
determines how often the ventilation equipment will oper-
ate to meet the ASHRAE 62.2 Standard. The thermostat
92
Fig. 228.
Fig. 229.
Fig. 230.