Dual-temperature thermostats allow users to determine two separate temperature setpoints for different times of the day, week, or year. They save energy costs for schools or commercial buildings that are occasionally unoccupied. When the supply pressure to the unit changes, the thermostat automatically switches between the setpoint temperatures.
Dual-temperature thermostats allow users to determine two separate temperature setpoints for different times of the day, week, or year. They save energy costs for schools or commercial buildings that are occasionally unoccupied. When the supply pressure to the unit changes, the thermostat automatically switches between the setpoint temperatures.
The 2216 Series Pneumatic Room Thermostats are designed for applications requiring separate control points due to varying occupancy or seasonal loads. They are particularly well-suited for day and night control in buildings such as schools, hospitals, and shopping malls.
These thermostats have a serrated thumb wheel for setpoint adjustment. They are direct acting and utilize dual bimetals for day and night control. One temperature (day) is controlled when the main pressure is below 17 psig (16 psig normal operating pressure), and the other temperature (night) is controlled when the main pressure is above 21 psig (25 psig normal operating pressure). A switching lever on the thermostat allows manual indexing to the day control point when the main air pressure is in the night mode.
Both control points are adjustable and either may be set to control higher or lower than the other. These thermostats use a ball feedback system and a 2:1 relay for accuracy and stability. For unit ventilator applications, these thermostats may be reconfigured as three-pipe thermostats, in which case the pressure at the "R" port is 0 psig during daytime operation and equals the main air pressure (typically 25 psig) during nighttime operation. Thermostat covers are available in various styles to meet particular requirements.
Features
| Action | Proportional |
| Setpoint Range | Day: 55 to 85°F (13 to 29°C) Night: 50 to 80°F (10 to 27°C) |
| Throttling Range | Day: 2 to 12°F (1.1 to 6.7°C), adjustable Night: 3 to 5°F (1.7 to 2.8°C), adjustable |
| Supply Air Pressure | Below 17 PSIG (117 kPa): Operates at day setpoint Above 21 PSIG (144.5 kPa): Operates at night setpoint |
| Maximum Air Pressure | 30 PSIG (207 kPa) |
| Main Air Consumption | 30 SCIM (8.2 mL/s) at 16 PSIG (110 kPa) 43 SCIM (11.7 mL/s) at 25 PSIG (172 kPa) |
| Calibration Point | 9 PSIG branch line pressure when ambient equals setpoint (factory-set) |
| Day and Night Indexing | Remote, by change in main air pressure, or local, with switching lever |
| Setpoint Adjustment | Serrated thumbwheel |
| Construction | Mechanical Components: Die cast aluminum, stainless steel, and glass-filled nylon Diaphragm: Fabric-reinforced Neoprene Air Lines: Connect to thermostat nipples with spring-reinforced plastic tubes Branch Connections: Equipped with internal filters |
Click on a category to view a selection of compatible accessories with the Schneider Electric 2216-126 Barber Colman Pneumatic Direct Acting Thermostat, horizontal and vertical, day and night, 2 pipe.
| Action | Proportional |
| Setpoint Range | Day: 55 to 85°F (13 to 29°C) Night: 50 to 80°F (10 to 27°C) |
| Throttling Range | Day: 2 to 12°F (1.1 to 6.7°C), adjustable Night: 3 to 5°F (1.7 to 2.8°C), adjustable |
| Supply Air Pressure | Below 17 PSIG (117 kPa): Operates at day setpoint Above 21 PSIG (144.5 kPa): Operates at night setpoint |
| Maximum Air Pressure | 30 PSIG (207 kPa) |
| Main Air Consumption | 30 SCIM (8.2 mL/s) at 16 PSIG (110 kPa) 43 SCIM (11.7 mL/s) at 25 PSIG (172 kPa) |
| Calibration Point | 9 PSIG branch line pressure when ambient equals setpoint (factory-set) |
| Day and Night Indexing | Remote, by change in main air pressure, or local, with switching lever |
| Setpoint Adjustment | Serrated thumbwheel |
| Construction | Mechanical Components: Die cast aluminum, stainless steel, and glass-filled nylon Diaphragm: Fabric-reinforced Neoprene Air Lines: Connect to thermostat nipples with spring-reinforced plastic tubes Branch Connections: Equipped with internal filters |
Click on a category to view a selection of compatible accessories with the Schneider Electric 2216-126 Barber Colman Pneumatic Direct Acting Thermostat, horizontal and vertical, day and night, 2 pipe.
