Honeywell Home VisionPRO 8000 Manual page 25

ISU Installer Setup
Number Name
No
215 Run Backup Heat
Yes
with Primary
Equip Controls Fan
216 Backup Heat Fan
Tstat Controls Fan
None
217 Backup Heat Stage
2 U1
Electric
218 Backup Heat Type
Gas/Oil
No
219 External Fossil Fuel
Yes
Kit
No
222 Economizer fault
Yes
"FDD"
Thermostat terminal U1
222 Economizer Wiring
Table 3. Installer Setup (ISU) Table. (Continued)
Settings Default
No
Tstat Controls
Fan
Default varies
based on
previous
selections
Electric
No
No
Thermostat
terminal U1
25
VISIONPRO
Residential,
Commercial Requires
or Both EIM
Both No This ISU is only displayed when ISU 201 Heating
Equipment is Other.
When ISU 201 Heating Equipment is Other, you
can select how the Backup Heat operates. The
thermostat can be setup to keep the primary heat
source on when it calls for Backup Heat or the
thermostat can be setup to turn off the primary
heat source when it calls for Backup Heat.
When ISU 201 Heating Equipment is Radiant
Heat, the thermostat keeps the Radiant Heat on
when it calls for Backup Heat.
Both No This ISU is only displayed for conventional systems
when ISU 212 Backup Heat Type is Electric.
Backup Heat Fan Operation automatically defaults
to Equip Controls Fan when ISU 212 Backup Heat
Type is Gas/Oil.
Both No TH8321 Thermostat Only:
This ISU is only displayed on the TH8321
thermostat when it is wired directly to the
equipment (Equipment Interface Module is NOT
used).
The thermostat can support up to 2 backup heat
stages for heat pump applications. When there are
2 backup heat stages, backup heat stage 2 must
be wired to U1.
U1 is a normally open dry contact when
configured for a stage of Heat. U1 requires power
from a system transformer or a separate
transformer.
Both No This ISU is only displayed when ISU 201 Heating
Equipment is Air to Air Heat Pump, Geothermal or
Geothermal Radiant and there is at least one stage
of backup heat.
See "Heat Pump and Backup Heat Operation"
beginning on page 78.
Both No This ISU is only displayed when ISU 201 Heating
Equipment is Air to Air Heat Pump, Geothermal or
Geothermal Radiant and ISU 218 Backup Heat
Type is Gas/Oil.
Commercial TH8321R If using a TH8321R without EIM and your code
with no requires that the thermostat display an alert when
EIM only the economizer is sending a fault code, select
"Yes". When this is done, the economizer will need
to be wired as shown in Fig. 339 on page 133. If
EIM used, and economizer fault required, this
option is not available. See Fig. 340 on page 133
Commercial TH8321R Only shown if "economizer fault FDD" is set to yes.
with no This setting is to inform installer only. It is not
EIM only adjustable. See Fig. 339 on page 133.
®
8000 WITH REDLINK™
Notes
68-0312—06