Honeywell Home THX9321 Prestige 2.0 Manual page 55

ISU Installer Setup
Number Name
None
9040 What Terminals are
Wired to A/C with U1
Low Speed Fan?
U2
U3
What Terminals are
Wired to Hot Gas
Bypass?
What Terminals are
Wired to the
Dehumidifier?
What Terminals are
Wired to the Whole
House Dehumidifier?
Note: Installer Setup
Name varies
depending on the
dehumidification
equipment installed.
Normally Closed
9050 A/C with Low Speed
Normally Open
Fan Setup
Hot Gas Bypass
Setup
Note: Installer Setup
Name varies
depending on the
dehumidification
equipment installed.
0°, 1°, 2°, 3° F
9070 Dehumidification -
Overcooling Limit
THX9321 PRESTIGE
Table 4. Installer Setup (ISU) Table. (Continued)
Settings Default
Thermostat
defaults to the
next unused U
terminal (U1,
U2, U3).
Defaults to
Normally Closed
when ISU 9000
Dehumidificatio
n Equipment is
A/C with Low
Speed Fan
Defaults to
Normally Open
when ISU 9000
Dehumidificatio
n Equipment is
Hot Gas Bypass
3° F
55
®
2.0 AND THX9421 PRESTIGE
Residential,
Commercial Requires
or Both EIM
Both No Number of Outputs:
THX9321 Thermostat: U1 and U2 terminals
Equipment Interface Module (EIM): U1, U2 and
U3 terminals
U1, U2, U3 are dry contacts that require power.
See "Wiring IAQ Equipment or a Heat/Cool
Stage to the U Terminals" beginning on
page 148.
Both No Choose an option appropriate for the type of
equipment installed.
Normally Open: U1, U2 or U3 will normally be
open and will close when the thermostat calls
for dehumidification.
Normally Closed: U1, U2 or U3 will normally be
closed and will open when the thermostat calls
for dehumidification.
Number of Outputs:
THX9321 Thermostat: U1 and U2 terminals
Equipment Interface Module (EIM): U1, U2 and
U3 terminals
Residential No This ISU is only displayed when ISU 9000
Dehumidification Equipment is set to A/C with
Low Speed Fan or A/C with High Speed Fan.
The thermostat uses the cooling system to
reduce humidity by lowering the temperature
up to 3° F below the current cool setpoint until
the desired humidity level is reached.
The thermostat keeps the temperature below
the cooling setpoint until the desired humidity
level is reached.
0° F is only an option when ISU 9000
Dehumidification Equipment is set to A/C with
Low Speed Fan.
®
IAQ WITH EIM
Notes
68-0311—08