
VISIONPRO
®
8000 WITH REDLINK™
68-0312—03
30
308,
309
Backup Heat
Droop Stage 2
Comfort
2.0° F to 15.5° F from setpoint (in
0.5° F increments)
Comfort
Both
No
ISU 301 Control Options must be set to
Advanced
to view or adjust
Backup Heat
Droop Stage 2.
This ISU is only displayed if there are 2
backup heat stages.
The indoor temperature must drop to the
selected droop setting before the thermostat
will turn on backup heat stage 2. For example,
if backup heat stage 2 is set to 2° F (1.0° C),
the indoor temperature must be 2° F (1.0° C)
away from the setpoint before backup heat
stage 2 turns on. When set to Comfort, the
thermostat will use backup heat stage 2 as
needed to keep the indoor temperature within
1° F (0.5° C) degree of the setpoint.
311
Upstage Timer for
Backup Heat
Off
(30, 45, 60, 75, 90) minutes
(2, 3, 4, 5, 6, 8, 10, 12, 14, 16)
hours
Off
Both
No
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
This ISU is only displayed when Backup Heat
Droop Stage 1 is set to 2 F or higher (ISU 308,
309).
312
Outdoor Lockout
Heat Pump
Off
5° F to 60° F (in 5° F increments)
Off
(See Notes)
Both
No
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 78.
312
Outdoor Lockout
Backup Heat
Off
5° F to 65° F (in 5° F increments)
Off
Both
No
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 78.
Table 2. Installer Setup (ISU) Table. (Continued)
ISU
Number
Installer Setup
Name
Settings
Default
Residential,
Commercial
or Both
Requires
EIM
Notes