Honeywell TH8320R1003 Installation Manual page 139

Zoning FAQs
Q: How does the RedLINK VisionPRO thermostat control a humidifier in zoned systems?
A: If ISU 807 Humidifier Control is set to Tstat Controls Fan, then the zone panel will close the dampers for the other zones with a
call for humidification.
If ISU 807 Humidifier Control is set to Hum Controls Fan, then all dampers will be open with a call for humidification (unless
another zone is calling for heat, cool or fan at that time).
See Fig. 348.
Q: How does the RedLINK VisionPRO thermostat control a ventilator in zoned systems?
A: If ISU 1006 Vent Fan Control is set to Tstat Controls Fan, then the zone panel will close the dampers for the other zones with a
call for ventilation.
If ISU 1006 Vent Fan Control is set to Equip Controls Fan, then all dampers will be open with a call for ventilation (unless
another zone is calling for heat, cool or fan at that time).
See Fig. 349.
Q: How does the RedLINK VisionPRO thermostat control a dehumidifier in zoned systems?
A: If ISU 913 Dehum Fan Control is set to Tstat Controls Fan, then the zone panel will close the dampers for the other zones with
a call for dehumidification.
If ISU 913 Dehum Fan Control is set to Equip Controls Fan, then all dampers will be open with a call for dehumidification
(unless another zone is calling for heat, cool or fan at that time).
See Fig. 350.
Q: Will the RedLINK VisionPRO thermostat work with a zone panel?
A: It depends on the zone panel:
• HZ322 or HZ432 (without an add-a-zone): If you have an HZ322 or HZ432 on a 2-4 zone system and you are not going to
control a humidifier, dehumidifier, or ventilator with the thermostat, you can use a THM4000R1000 wireless adapter with the
zone panel and connect the RedLINK VisionPRO thermostat as one of the zones. A single THM4000R1000 wireless
adapter allows you to connect up to three RedLINK VisionPRO thermostats with an HZ322 or up to four RedLINK
VisionPRO thermostats with an HZ432.
• HZ432 (with a TAZ-4 add-a-zone): You cannot use a wireless adapter when a TAZ-4 is used. Each RedLINK VisionPRO
thermostat used would need a separate THM5421R Equipment Interface Module or you can wire the RedLINK VisionPRO
directly to the zone panel. The Equipment Interface Module would wire to the zone it is controlling on the HZ432 or TAZ-4.
• Zone panel with no master or slave: As long as all zones on the zone panel are wired the same and they use typical
terminals with an R and C plus Y, G, etc, the RedLINK VisionPRO thermostat should work. Each RedLINK VisionPRO
thermostat used would need a separate THM5421R Equipment Interface Module or you can wire the RedLINK VisionPRO
directly to the zone panel. The Equipment Interface Module would wire to the zone it is controlling on the zone panel.
• Master zone: A master uses separate O and B wires. The RedLINK VisionPRO thermostat cannot be used as a master
thermostat.
Q: Can I use the remote indoor sensors with the RedLINK VisionPRO thermostats if I have zoning?
A: It depends. The RedLINK VisionPRO thermostats can only control 1 zone, even if it is used with multiple sensors. The
RedLINK VisionPRO thermostat cannot be used with a remote sensor if it is used with a THM4000R adapter. The RedLINK
VisionPRO thermostat can be used with a remote sensor if it is used with a THM5421R Equipment Interface Module or if the
thermostat is wired directly to the panel.
Q: Can I use a telephone access module with the RedLINK VisionPRO thermostat?
A: No. The telephone access module only works with the TH9421C or TH5320C communicating thermostats and the EIM or
zone panel used with those controls. See the Gateway section for information on using RedLINK VisionPRO thermostats with
a THM6000R Gateway for Internet access.
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VISIONPRO 8000 WITH REDLINK™
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