Johnson Controls AS-UNT1126-0   (Need More Information? Click Here to visit the Johnson Controls website.)

The Johnson Controls AS-UNT1126-0 is an electronic device for digital control of packaged air handling units, unit ventilators, fan coils, heat pumps, and other terminal units serving a single zone or room. It also can be configured as a generic Input/Output (I/O) device for basic point monitoring applications when used within a Metasys Network.

You can easily configure point inputs and outputs, and software features to control a wide variety of Heating, Ventilating, and Air Conditioning (HVAC) equipment applications. The AS-UNT1126-0 may be used as a standalone controller or connected to the Metasys Network through a Network Control Module (NCM), N30, N31, or Companion supervisory controller. When connected to the Metasys Network, the controller provides all point control information to the rest of the network. The devices communicate through an N2 Bus. For a smaller facility, the AS-UNT1126-0 can function as a standalone controller.

You can use the AS-UNT1126-0 for unit ventilator, rooftop, heat pump, or fan coil applications, or as a generic I/O multiplexer and I/O sideloop control. Each has a different sequence of operation, all of which are covered in the HVAC PRO User’s Manual (FAN 637.5).

Product Specifications

6 Analog Inputs	RTD temperature elements (1000 ohm nickel, platinum, or silicon) Adjustable 0 to 2k ohm setpoint potentiometers 0 to 10 VDC or 0 to 2 VDC transmitters
Analog Outputs:	(2) 0 to 10 VDC @ 10 mA
6 Binary Inputs	(6) 24 VAC input Momentary pushbutton from Zone Sensor for temporary occupancy mode (BI5) BI 4 may be used as an accumulator input for frequencies less than 2 Hz.
Binary Outputs	(6) 2A 24 VAC Pilot Relays SPDT (Single-Pole, Double-Throw)
N2 Bus	Isolated
Zone Bus	Light-Emitting Diode (LED) Indication 8-pin phone jack on controller Removable screw terminal block
Operating Temperature Rating	-40 to 60°C (-40 to 140°F)
I/O Terminations	Quick Connects (Spade Lugs)
24 VAC Power in Termination	Quick Connects (Spade Lugs)
Standards Compliance	FCC Part 15, Subpart B, Class A, IEEE 472, IEEE 587 Category A, UL 916, UL 864 (Listed), CSA C22.2 No.205, EN50081-1 (EN55011 Class B), EN50082-2 (1995), (EN61000-4-2, EN50140 [1993], EN50204, EN50141 [1993]), EN61000-4-4, EN50141, UL873 (Recognized), UL94-5VA (Enclosure)