Spec Sheet

THX9321 PRESTIGE
®
2.0 AND THX9421 PRESTIGE
®
IAQ WITH EIM
59 68-0311—07
10060 Ventilation Fan
Control
Thermostat Controls Fan
Equipment Controls Fan
if “fresh air damper” or “passive”
is selected for ISU 10,000. This
setting is not shown and
thermostat controls fan by default.
Thermostat
Controls Fan
Both No Thermostat Controls Fan: The thermostat turns
on the ventilation equipment and the fan when
ventilation is needed.
Equipment Controls Fan: The thermostat turns
on the ventilation equipment when ventilation
is needed. The fan is controlled by the
equipment.
10090 Number of Bedrooms
1 to 6
2 bedrooms Residential No This ISU is only displayed when ISU10050
Ventilation Control Method is set to ASHRAE
(Residential only).
10090 Size of House
1000 to 5000 sq. ft. (in 100 sq. ft.
increments)
(90 to 460 sq. m.)
1000 sq. feet Residential No This ISU is only displayed when ISU10050
Ventilation Control Method is set to ASHRAE
(Residential only).
10100 Enter Equipment
Ventilation Rate
30 to 350 CFM (in 5 CFM
increments)
(850 - 9900 LPM)
150 Residential No This ISU is only displayed when ISU10050
Ventilation Control Method is set to ASHRAE
(Residential only).
10120 Ventilation Percent
On Time
10% to 100% (in 10%
increments)
30% Both No The thermostat operates ventilation equipment
based on a percentage entered in the installer
setup (ISU 10120). 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).
10125 Ventilation Priority
Lockouts are Priority
ASHRAE is Priority
Lockouts are
Priority
Residential No 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 10130)
• Lockout Ventilation on Humidification or
Dehumidification Calls (ISU 10140)
• Lockout Ventilation during “Sleep”
(Residential) program period. 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 10140 “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” program period is not an option
when you select “ASHRAE is Priority”.
Table 4. Installer Setup (ISU) Table. (Continued)
ISU
Number
Installer Setup
Name Settings Default
Residential,
Commercial
or Both
Requires
EIM Notes