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The RED-4 panel can control a standard A/C or a heat pump; but if there is a heat pump, a heat pump thermostat must be installed on zone 1.  When a system includes a heat pump, the ED-4 panel can control up to 3 stages of heating and 2 stages of cooling. 
With a 2 to 4 zone system not including a heat pump: 1 or 2 stage heating, 1 or 2 stage of cooling.

Auto change-over panel
(Auto change-over thermostats are required for an automatic change-over system).

 

2 to 4 Zones
RED-4 Complete System Example
Quantity Description
1 RED-4 Panel #35234
1 / Zone Thermostat, (see chart below)
1 Pressure relief damper
1 / Zone Zone damper
1 PT-40 Transformer # 35054, (4 DuroZone zone dampers maximum)

* Compatible with most 24VAC powered or battery powered thermostats.

RED-4 DuroZone Thermostats (non auto change-over)

Zones System NOT including a heat pump System INCLUDING a heat pump
Zone - 1 DT-4 #35190
digital, non programmable thermostat
DT-705 #35198
digital set back thermostat
DT-5 #35162
digital, non programmable thermostat
DT-7 #35161
digital, programmable thermostat

Zones 2, 3 and 4:
One Thermostat
Per Zone

DT-4 #35190
digital, non programmable thermostat
DT-705 #35198
digital set back thermostat
DT-4 #35190
digital, non programmable thermostat
DT-705 #35198
digital set back thermostat

DUROZONE ZONE DAMPERS A maximum of 2 dampers per zone can be connected directly to any zone.
TRANSFORMER Model PT-40, Item #35054, can supply a maximum of 4 DuroZone zone dampers.
Instructions and Typical Wiring Diagrams for DuroZone RED-4

User Manual for RED-4

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