Honeywell TH8321 Product Data page 18

VISIONPRO® 8000 SMART THERMOSTAT
ISU Installer Setup
Number Name
Off
311 Upstage Timer for
Backup Heat (30, 45, 60, 75, 90) minutes
(2, 3, 4, 5, 6, 8, 10, 12, 14, 16)
hours
Off
312 Outdoor Lockout
Heat Pump 5° F to 60° F (in 5° F increments)
(Balance Point)
Off
312 Outdoor Lockout
Backup Heat 5° F to 65° F (in 5° F increments)
1 to 12 CPH
313 Radiant Cycles Per
Hour Stage 1
Note: "Stage 1" is
not displayed if
there is only 1 stage
of Radiant Heat.
33-00096—04
Table 2. Installer Setup (ISU) Table. (Continued)
Settings Default
Off
Off
(See Notes)
Off
3
Residential,
Commercial
or Both
Both The Backup Heat Upstage Timer starts when the
highest stage of the previous heating equipment
type turns on. Backup heat will be used (if needed)
when the timer expires. See "Backup Heat Upstage
Timer" beginning on page 54.
This ISU is only displayed when Backup Heat Droop
Stage 1 is set to 2 F or higher (ISU 308, 309).
Both ISU 312 Heat Pump Outdoor Lockout requires an
outdoor sensor.
Default is 40 F if ISU 201 Heating Equipment is Air
to Air Heat Pump and ISU 218 Backup Heat Type is
Gas/Oil.
Default is Off if ISU 201 Heating Equipment is Air to
Air Heat Pump and ISU 218 Backup Heat Type is
Electric.
Default is Off if ISU 201 Heating Equipment is
Geothermal or Geothermal Radiant.
Heat Pump Outdoor Lockout 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 55.
Both ISU 312 Backup Heat Outdoor Temperature Lockout
requires an outdoor sensor.
This ISU is only displayed if ISU 201 Heating
Equipment is Air to Air Heat Pump, Geothermal or
Geothermal Radiant and ISU 219 External fossil fuel
kit is set to No.
See "Heat pump with outdoor temperature lockouts"
beginning on page 55.
Both This ISU is only displayed when ISU 201 Heating
Equipment is Geothermal Radiant.
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.
18
Notes