THX9321 PRESTIGE
®
2.0 AND THX9421 PRESTIGE
®
IAQ WITH EIM
68-0311—02
24
2010
Heating Equipment
Type
Conventional Forced Air Heat:
Standard Efficiency Gas Forced Air
High Efficiency Gas Forced Air
Oil Forced Air
Electric Forced Air
Hot Water Fan Coil
Other
Heat Pump:
Air to Air Heat Pump
Geothermal Heat Pump
Geothermal Radiant Heat
Radiant Heat:
Hot Water Radiant Heat
Geothermal Radiant Heat
Steam
Other
Other:
Gravity
Other
Default varies
based on
previous
selections
Both
No
Cycle Rate and Fan Operation automatically
default to the correct settings based on the
equipment type selected.
This ISU is not displayed when ISU 2000
Heating System Type is set to
None (Cool
Only)
.
See “Geothermal Radiant Heat” beginning
2030
What Terminals are
Wired to Radiant
Heat?
None
U1
U2
U3
Default varies
based on
previous
selections
Both
No
This ISU is only displayed when ISU 2010
Heating Equipment Type is
Geothermal
Radiant Heat
.
Geothermal Radiant Heat must be wired to
a universal terminal (U1, U2, or U3).
U1, U2 and U3 are normally open dry
contacts when configured for a stage of
Heat. U1, U2 and U3 require power from
the system transformer or a separate
transformer.
U3 is only available on the Equipment
Interface Module (EIM).
2040
What Terminals are
Wired to Radiant
Heat - Stage 2?
None
U1
U2
U3
Default varies
based on
previous
selections
Both
No
This ISU is only displayed when ISU 2010
Heating Equipment Type is
Geothermal
Radiant Heat
.
Geothermal Radiant Heat must be wired to
a universal terminal (U1, U2, or U3).
U1, U2 and U3 are normally open dry
contacts when configured for a stage of
Heat. U1, U2 and U3 require power from
the system transformer or a separate
transformer.
U3 is only available on the Equipment
Interface Module (EIM).
Table 4. Installer Setup (ISU) Table. (Continued)
ISU
Number
Installer Setup
Name
Settings
Default
Residential,
Commercial
or Both
Requires
EIM
Notes