TCS SZ2182 Advanced Air Handling Unit Controller

Description

The SZ2182 is designed to control constant volume and variable air volume air handling units that require advanced control functionality such as dehumidification, face & bypass control or humidity & carbon dioxide sensor sharing.

Features:

• Stand-alone or network operation

• 365-day time clock with two holiday schedules with automatic leap year and daylight savings correction

• Discharge air sensor input with high and low limits and reset.

• Hot deck/cold deck control with night zone option

• Outdoor air sensor input with heating & cooling lockouts

• Six stages for either heating or cooling

• Modulating output for heating and/or cooling

• Modulating economizer output with digital or analog enthalpy options

• Modulating output for fan or damper control

• Programmable minimum run times

• Adjustable delay on power-up for soft starts

• PID control options

• Smart Recovery

• Fifteen status LEDs

• Remote setpoint capability

• User setpoint adjustment limits

• Local override and remote override capability

• Carbon dioxide demand control ventilation

• Auxiliary time clock output

• Fan interlock safety option

• Equipment monitoring inputs and indication

• External time clock input

• Dehumidification sequences with integrated or external reheat

• Face & Bypass control sequence

• Outdoor air humidity sharing capability

• Carbon dioxide sensor sharing capability

• Pre-occupied purge sequence

• Heat pump control functions

Specifications:

General Accuracy: +/- 0.5%
Programming: 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: Six 1000 Ω PRTD, momentary override,  4 to 20mA analog and 5 digital (dry contact)
Range: Space and Return: 20 to 120°F
Discharge Air Temp: 20 to 220°F
Mixed Air Temp: 20 to 220°F
Outdoor Air Temp: -40 to 160°F
Outputs: Eight digital (SPST dry contact, 24 VAC @ 2A), and four 4-20 mA DC analog
Max. Load Resistance (analog output): 600 Ω
Common mode rejection: 100 db @ 60 Hz
Power Consumption: 15 VA max.
Specifications subject to change without notice.