Name: Johnson Controls AS-UNT121-701 Low Temp Controller, 2 AO [New]
Brand: Johnson Controls
SKU: B2E-LFX-163449
Price: 1255.5 USD
Availability: InStock

Description

. . . . . The Johnson Controls AS-UNT121-701 is a Metasys Unitary Controller (UNT) in the low-ambient UNT121 configuration, an Application Specific Controller for single-zone and room-level HVAC equipment. The UNT121 configuration provides two analog outputs and is rated for ambient temperatures from -40°F to 140°F, allowing installation on rooftop and outdoor equipment.

The UNT is a stand-alone digital controller that also communicates on the Metasys N2 Bus, so a Network Control Unit or operator workstation can share sensor data and schedules across the facility. Two banks of DIP switches configure the analog input points and set the N2 address. The analog outputs drive modulating valve and damper actuators, while binary outputs are triacs that switch 24 VAC to relays and solenoids; on the UNT120/121 series the terminal labelled TRIACS is the internal shared node of the triac outputs, allowing high-side or low-side switching. A two-wire Zone Bus lets a laptop or a Zone Terminal communicate with the controller, download its database and reach M100 Series motor actuators. Application configuration is built, downloaded and commissioned with HVAC PRO for Windows. Johnson Controls requires the UNT120 and UNT121 to be installed in a BZ-1000-7 or equivalent enclosure.

* Brand / Manufacturer: Johnson Controls
* Model / Part Number: AS-UNT121-701
* Series: Metasys UNT Series Application Specific Controller
* Product Type: Low-ambient unitary controller with analog outputs
* Analog Outputs: 2
* Binary Outputs: 24 VAC triacs
* Supply Power: 24 VAC, 50/60 Hz
* Communication: Metasys N2 Bus; 2-wire Zone Bus for room sensor and service tool
* Ambient Operating: -40°F to 140°F (-40°C to 60°C)
* Required Enclosure: BZ-1000-7 or equivalent
* Configuration Software: HVAC PRO for Windows
* Agency Listings: UL Listed and CSA Certified as part of the Metasys Network

Typical applications include rooftop units, outdoor air handlers, make-up air units and heat pumps in exposed locations that require modulating valve or damper control in addition to staged on/off outputs.. Johnson Controls. Johnson Controls. AS-UNT121-701.

Warranty Information

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