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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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