Thermostat | Economizer | |||||||
|---|---|---|---|---|---|---|---|---|
Control Mode | Occupied | OA Good to Economize? | Y1I | Y2I | Y1O | Y2O | Damper Position | |
Conventional | Cooling | Yes | NA | Off | Off | Off | Off Y2O | FAN L ACT |
Yes | On | Off | Off | Off | FAN L ACT to 100% | |||
On | On, <15 mins | On1) | Off | FAN H ACT to 100% | ||||
On | On, >15 mins | On1) | On/Off2) | FAN H ACT to 100% | ||||
No | On | Off | On | Off | FAN L ACT | |||
On | On | On | On | FAN H ACT | ||||
Heating | Yes | NA | Off | Off | Off | Off | FAN H ACT | |
Cooling | No | NA | Off | Off | Off | Off | Closed | |
Yes | On | Off | Off | Off | Closed to 100% | |||
On | On, <15 mins | On1) | Off | Closed to 100% | ||||
On | On, >15 mins | On1) | On/Off2) | Closed to 100% | ||||
No | On | Off | On | Off | Closed | |||
On | On | On | On | Closed | ||||
Heating | No | NA | Off | Off | Off | Off | Closed | |
Heat Pump | Cooling | Yes | NA | Off | Off | Off | Off | FAN L ACT |
Yes | On | Off | Off | Off | FAN L ACT to 100% | |||
On | On, <15 mins | On1) | Off | FAN H ACT to 100% | ||||
On | On, >15 mins | On1) | On/Off2) | FAN H ACT to 100% | ||||
No | On | Off | On | Off | FAN L ACT | |||
On | On | On | On | FAN H ACT | ||||
Heating | Yes | NA | Off | Off | Off | Off | FAN L ACT | |
On | Off | On | Off | FAN H ACT | ||||
On | On | On | On | FAN H ACT | ||||
Cooling | No | NA | Off | Off | Off | Off | Closed | |
Yes | On | Off | Off | Off | Closed to 100% | |||
On | On, <15 mins | On1) | Off | Closed to 100% | ||||
On | On, >15 mins | On1) | On/Off2) | Closed to 100% | ||||
No | On | Off | On | Off | Closed | |||
On | On | On | On | Closed | ||||
Heating | No | NA | Off | Off | Off | Off | Closed | |
On | Off | On | Off | Closed | ||||
On | On | On | On | Closed | ||||
1 | If Y2-Input is called too, the controller increases fan speed to Speed High and starts fan delay (2FAN DLY) time. After the delay time runs out, the controller starts Y1-Output. |
2 | If Y1O is ON for more than a set time (15 minutes by default, changeable via Parameter '3STG3 DLY)', Y2I cooling demand remains ON, and OAT is lower than MAT setpoint (3MAT SET), then Relay 2 is OFF to disable Cooling Stage 2. If the OAT is higher than the MAT setpoint, then Relay 2 energizes to allow Y2 pass-through to enable Cooling Stage 2. |
Thermostat | Economizer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Control Mode | Occupied | OA Good to Economize? | CO2 | Y1I | Y2I | Y1O | Y2O | Damper Position | EF (1 or 2)1) | |
Conventional | Cooling | No | NA | NA | Off | Off | Off | Off | Closed | Off |
Yes | NA | >SP2) | Off | Off | Off | Off | VENT MIN L to VENT MAX L | On/Off3) | ||
≤SP | Off | Off | Off | Off | VENT MIN L | Off | ||||
No | Yes | NA | On | Off | Off | Off | Closed to Fully Open (100%) | On | ||
On | On | On4) | On/Off5) | Fully open (100%) | On | |||||
Yes | Yes | >SP | On | Off | Off | Off | VENT MIN L to 100% | On | ||
>SP | On | On | On4) | On/Off5) | VENT MIN H to 100% | On | ||||
≤SP | On | Off | Off | Off | VENT MIN L or 100% | On | ||||
≤SP | On | On | On4) | On/Off5) | VENT MIN H or 100% | On | ||||
No | No | NA | On | Off | On | Off | Closed | Off | ||
On | On | On | On | |||||||
Yes | No | >SP | On | Off | On | Off | VENT MIN L to VENT MAX L | On/Off3) | ||
>SP | On | On | On | On | VENT MIN H to VENT MAX H | On/Off3) | ||||
≤SP | On | Off | On | Off | VENT MIN L | Off | ||||
≤SP | On | On | On | On | VENT MIN H | Off | ||||
Heating | No | NA | NA | Off | Off | Off | Off | Closed | Off | |
Yes | NA | ≤SP | Off | Off | Off | Off | VENT MIN H | Off | ||
>SP | Off | Off | Off | Off | VENT MIN H to VENT MAX H | On/Off3) | ||||
Heat Pump | Cooling | Yes | NA | >SP | Off | Off | Off | Off | VENT MIN L to VENT MAX L | On/Off3) |
≤SP | Off | Off | Off | Off | VENT MIN L | Off | ||||
Yes | Yes | >SP | On | Off | Off | Off | VENT MIN L to 100% | On | ||
>SP | On | On | On4) | On/Off5) | Fully open (100%) | On | ||||
≤SP | On | Off | Off | Off | VENT MIN L to 100% | On | ||||
≤SP | On | On | On4) | On/Off5) | Fully open (100%) | On | ||||
Yes | No | >SP | On | Off | On | Off | VENT MIN L to VENT MAX L | On/Off3) | ||
>SP | On | On | On | On | VENT MIN H to VENT MAX H | On/Off3) | ||||
≤SP | On | Off | On | Off | VENT MIN L | Off | ||||
≤SP | On | On | On | On | VENT MIN H | Off | ||||
Heating | Yes | NA | >SP | Off | Off | Off | Off | VENT MIN L to VENT MAX L | On/Off3) | |
>SP | On | Off | On | Off | VENT MIN H to VENT MAX H | On/Off3) | ||||
>SP | On | On | On | On | VENT MIN H to VENT MAX H | On/Off3) | ||||
≤SP | Off | Off | Off | Off | VENT MIN L | Off | ||||
≤SP | On | Off | On | Off | VENT MIN H | Off | ||||
≤SP | On | On | On | On | VENT MIN H | Off | ||||
Cooling | No | NA | NA | Off | Off | Off | Off | Closed | Off | |
No | Yes | NA | On | Off | Off | Off | Closed to 100% | On | ||
On | On | On4) | On/Off5) | 100% | On | |||||
No | No | NA | On | Off | On | Off | Closed | Off | ||
On | On | On | On | Closed | Off | |||||
Heating | No | NA | NA
| Off | Off | Off | Off | Closed | Off | |
On | Off | On | Off | Closed | Off | |||||
On | On | On | On | Closed | Off | |||||
1 | Exhaust Fan. One or two exhaust fans can be connected to the Economizer Controller. |
2 | Setpoint. Demand control ventilation setpoint. |
3 | The controller energizes Exhaust Fan Relay 1 and Exhaust Fan Relay 2 if the damper position reaches Exhaust Fan 1 parameter setting and Exhaust Fan Relay 2 parameter setting respectively. |
4 | If Y2-Input is called too, the controller increases fan speed to Speed High and starts fan delay (2FAN DLY) time. After the delay time runs out, the controller starts Y1-Output. |
5 | If Y1O is ON for less than a set time (15 minutes by default, changeable via Parameter '3STG3 DLY)', Relay 2 is OFF. If Y1O is ON for more than a set time, Y2I cooling demand remains ON, and OAT is lower than MAT setpoint (3MAT SET), then Relay 2 is OFF to disable Cooling Stage 2. If the OAT is higher than the MAT setpoint, then Relay 2 energizes to allow Y2 pass-through to enable Cooling Stage 2. |