33 33-00462—05
2000 System Type System Type Conventional Forced Air
Heat,
Heat Pump,
Radiant Heat,
Other,
None (cool only)
No Both
2010 Equipment
type
Equipment type Standard Efficiency Gas
forced Air,
High efficiency Gas Forced
Air,
Oil Forced Air,
Electric Forced Air,
Hot Water Fan Coil,
2000 =
Conventional
Forced air heat
No Both
Equipment type Air to Air Heat Pump,
Geothermal Heat Pump
2000 set to
Heat Pump
No Both
Equipment type Gravity or Other 2000 = other No Both
Equipment type Hot water radiant heat, hot
water radiant floor heat, and
steam
2000 set to
Radiant Heat
No Both* *Hot water radiant
floor heat for T10+
only
2060 Reversing
Valve
Reversing Valve O (O/B on Cool) or
B (O/B on Heat)
2000 set to
heat pump
No Both
2070 Equipment
stages
Cool stages 0-2 cool stages. 2000 set to
other than heat
pump
No Both
Heat stages 1-2 (1 if 2010 = gravity) No Both
Radiant Heat Stages 1 if 1055 = yes. 1 or 2 if
1055 = no & 2000 =
Radiant.
1055 set to
"wired" or 2000
= radiant heat
No Both
Compressor Stages 1 or 2 2000 set to
heat pump
No Both
Fan Coil Heat Stages 1 , 2 or 3 2010 = Hot
Water Fan Coil
See notes Both EIM needed for 3
stages
Electric Forced air Heat
Stages
1 , 2 or 3 2010 = Electric
Forced air
See notes Both EIM needed for 3
stages.
Backup Heat Stages 0, 1, or 2 2000 set to
heat pump
See notes Both EIM needed for 2
backup stages.
2110 Fan Control Fan Operation in Heat Equipment Controls fan,
Thermostat controls fan
2010 = other,
electric forced
air, or Hot
Water Fan Coil
No Both
2120 Backup heat
type
Backup heat type None, Standard Efficiency
Gas Forced Air, High-
Efficiency Gas Forced Air,
Oil forced air, Electric forced
air, Hot water fan coil, Hot
water Radiant heat, other
1055 = wired
floor sensor, or
2000 = radiant
heat
No Both
2130 Backup heat
stages
Backup heat stages 1 or 2 (only 1 if 2070 = 2
radiant heat stages)
ISU 1055 =
wired or 2000
= radiant &
2120 = other
than "none"
No Both EIM needed for 2
backup stages.
2160 Fan Control Backup Heat Fan Control Equipment Controls fan,
Thermostat controls fan
2120 = electric
or other
No Both
2175 Backup Heat Aux/E Terminal Control Drive aux and E together or
Aux and E independent
2070 backup
heat stages = 1*
No* Both *Not an option when
EIM is used.
2180 Backup Heat Backup Heat Type Electric Forced Air,
Standard Efficiency Gas
Forced Air, High Efficiency
Gas Forced Air, Oil Forced
Air, Hot Water Fan Coil, Hot
Water Radiant Heat, Other
2070 backup
heat stages = 1
or 2
No Both
Table 9. Installer Setup (ISU). (Continued)
Firmware is occasionally updated at the factory or over the air. Some ISU settings may not be shown on models that lack the latest firmware.
ISU # Heading Question Options
Contingent
previous
setting?
EIM
needed?
T10, T10+
or both Notes
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