Honeywell PRESTIGE THX9321 - Manual (Page 35)

THX9321 PRESTIGE ® 2.0 AND THX9421 PRESTIGE ® IAQ WITH EIM
35 68-0311—02
3120 Outdoor
Temperature
Lockouts:
Compressor
Lockout / Balance
Point
Off
5° F to 60° F (in 5° F increments) Off
(See Notes)
Both No ISU 3120 Compressor Lockout / Balance
Point requires an outdoor sensor.
Default is 40 F if ISU 2010 Heating
Equipment Type is Air to Air Heat Pump
and ISU 2180 Backup Type is gas or oil
forced air.
Default is Off if ISU 2010 Heating
Equipment Type is Air to Air Heat Pump
and ISU 2180 Backup Type is electric
forced air.
Default is Off if ISU 2010 Heating
Equipment Type is Geothermal Heat Pump
or Geothermal Radiant Heat.
Compressor Lockout / Balance Point is
optional for any type of heat pump (Air to
Air Heat Pump, Geothermal Heat Pump or
Geothermal Radiant Heat).
See “Heat pump with outdoor temperature
lockouts” beginning on page 100.
3120 Outdoor
Temperature
Lockouts:
Backup Heat
Lockout
Off
5° F to 65° F (in 5° F increments) Off Both No ISU 3120 Backup Heat Outdoor
Temperature Lockout requires an outdoor
sensor.
This ISU is only displayed if ISU 2010
Heating Equipment Type is Air to Air Heat
Pump, Geothermal Heat Pump or
Geothermal Radiant Heat and ISU 2190
External fossil fuel kit is set to Thermostat
Controls Backup Heat.
See “Heat pump with outdoor temperature
lockouts” beginning on page 100.
3130 Radiant Heat
Cycles Per Hour -
Stage 1
Note: “Stage 1" is
not displayed if
there is only 1
stage of Radiant
Heat.
1 to 12 CPH 3 Both No ISU 3010 Temperature Control Options
must be set to Advanced to view or adjust
cycle rate.
This ISU is only displayed when ISU 2010
Heating Equipment Type is Geothermal
Radiant Heat.
The thermostat automatically defaults to
the recommended setting for Geothermal
Radiant Heat (3 CPH).
Cycle rate limits the maximum number of
times the system can cycle in a 1 hour
period measured at a 50% load. For
example, when set to 3 CPH, at a 50% load,
the most the system will cycle is 3 times
per hour (10 minutes on, 10 minutes off).
The system cycles less often when load
conditions are less than or greater than a
50% load.
Table 4. Installer Setup (ISU) Table. (Continued)
ISU
Number
Installer Setup
Name Settings Default
Residential,
Commercial
or Both
Requires
EIM Notes