Modulating Thermostat w/Economizer: 365-Day
SZ1051Description
The SZ1051 is used to control air handling units with modulating economizers. It has a 365-day clock.
Specs & Docs
Specifications:
General
Accuracy: +/- 1ºF at 75ºF
Display resolution:+/-1°F (0.6°C)
Display: 32-character LCD
Programming: Front panel keypad or EIA RS485 interface
Communications: RS485, half duplex
Memory backup: Non-volatile EEPROM, no battery required
Program Setting: 2 events per day with 7 days per week and 2 holiday schedules (12 periods of up to 99 days each)
Override: Programmable from 0 to 255 minutes
Environmental
Operating temperature: 32 to 131°F (0 to 55°C)
Operating humidity: 0 to 100% RH, non-condensing
Storage temperature: 14 to 140°F (-10 to 60°C)
Electrical
Supply voltage: 24 VAC +/- 20%
Inputs: Built-in and remote platinum RTDs, momentary override and three digital (dry contact)
Range: Room Temp: 40 to 90°F (built-in or remote)
Outdoor Air Temp: -40 to 160°F (remote)
Discharge Air Temp: 0 to 150°F (remote)
Outputs: Four digital (SPST dry contact, 24 VAC @ 2 A), two 4-20 mA DC analog
Max. Load Resistance (analog output): 600 Ω
Common mode rejection: 100 db @ 60 Hz
Power Consumption: 8 VA max.
Specifications subject to change without notice.