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DUROZONE ZONING GUIDE
2 TO 3 ZONES, ELECTRIC, GAS OR OIL
FURNACE, BASIC AUTO CHANGEOVER

Panel Selection 2 - 3 Zones - SMZ-AC Item #35229
 
2 Zones 3 Zones
SMZ-AC Complete System Example SMZ-AC Complete System Example
1ea  SMZ-AC Panel #35229
2ea  DT-AC Auto Changeover Thermostats #35192
1ea  Pressure Relief Damper
2ea  Zoning Dampers
1ea  PT-40 Transformer #35054
1ea  SMZ-AC Panel #35229
3ea  DT-AC Auto Changeover Thermostats #35192
1ea  Pressure Relief Damper
3ea  Zoning Dampers
1ea  PT-40 Transformer #35054
Note: for heat pump applications, do not use this panel, we recommend our ED-3 or ED-4 zone control panel.

SMZ-AC Thermostat compatibility when the equipment being controlled
is a furnace and a standard A/C

To answer questions regarding thermostat compatibility refer to the following guidelines.

  1. Use "hardwired type" 24 volts AC thermostats, Manual/Auto changeover selectable.

  2. The zone 1 thermostat must have the following terminals: C, R, G, Y, W (and W2 if a two stage heating system and Y2 if a two stage cooling system).

  3. The zone 2 and 3 thermostats require the same terminals, except for the G terminal.
    (Only the zone 1 thermostat controls the "Fan On/Auto" function).

  4. Battery operated thermostats, (not just as a back up), are also compatible with this panel.

  5. Power stealing thermostats are not compatible with this panel.

PLEASE NOTE: When using a set back thermostat in Zone1, it only programs the settings for that zone. You require a programmable thermostat on each zone where that function is desired. The same principle applies for the Auto Changeover function.

ZONE DAMPERS The DuroZone RD, MS and MB series are recommended.
TRANSFORMER Model PT-40, Item #35054, can supply a maximum of 4 DuroZone zone dampers.

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