TCS SZ2166 Chiller Controller
Chiller Controller 6 RTD inputs, 5 digital inputs, 2 analog outputs, 9 digital outputs
US$942.73
Availability:
In stock
SKU
SZ2166
Description
The SZ2166 is a microprocessor based chiller controller. It is designed for use on multi-stage chiller applications and includes boiler support and control.
Features:
• Stand-alone or network operation
• 365-day time clock with two holiday schedules, automatic leap year and daylight savings correction
• No backup battery required for control parameters, schedule or clock
• Hot water supply and return temperature inputs
• Chilled water supply and return temperature input
• Two digital outputs for boilers
• One digital output for alarm
• Mixed water temperature input
• Outdoor air temperature input
• Separate set point for thermal storage sequence
• Outdoor air reset control
• Two digital inputs for pump status
• External time clock input
• Six digital outputs for chillers, pumps and chiller stages
• Adjustable offsets and differentials on digital outputs
• Lead/Lag sequencing of up to six chillers
• Two modulating analog outputs for valves and VFDs
• Adjustable P+I+D control on modulating outputs
• LEDs for monitoring status
• Automatic rotation of pumps
• Automatic rotation of chiller and boiler stages
• Pump lube feature
• Local and remote override capability
Specifications:
General Accuracy: +/- 0.5%
Programming: EIA RS485 interface
Communications: RS485, half duplex
Memory backup: Non-volatile EEPROM, no battery required
Environmental Operating temperature: 32 to 131°F (0 to 55°C)
Operating humidity: 0 to 100% RH, noncondensing
Storage temperature: 14 to 140°F (-10 to 60°C)
Electrical Supply voltage: 24 VAC +/-20%
Inputs: Six 1000 Ω PtRTD, momentary override and five digital (dry contact)
Range: Chilled water supply and return: 0 to 100°F
Hot water supply and return: 40 to 240°F
Mixed water: 20 to 220°F
Outdoor air: -40 to 160°F
Outputs: Nine digital (SPST dry contact, 24 VAC @ 2A) and two 4 to 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.
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