Metasys UNT111-1 User Manual

UNT Controller—Unitary Controller (UNT) 5
Introduction
The Unitary Controller (UNT) 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, Ventilation, and Air Conditioning
(HVAC) equipment applications. The UNT may be used as a standalone
controller or connected to the Metasys Network through a Network
Control Module (NCM) or Companion.
When connected to the Metasys Network, the UNT provides all point
control information to the rest of the network. The devices communicate
through an N2 Bus. For a smaller facility, the UNT can function as a
standalone controller. Figure 1 illustrates the UNT.
1 2 3 4 5 6
1 2 3 4 5 6 7 8
BINARY INANALOG INPUTS BINARY OUTPUTS
DSI
1 2 3 4 5 6
ANALOG INPUTS
COMMON
ANALOG INPUTS
1 2 3 4 5 6
BI NARY INP UT
1 2 3 4
TO
ZONE
STAT
+15VDC
REF
N2-
N2+
24VAC
COM
ZBUS
Z BUS
24 VAC
+15VDC
BINARY OUTPUT
1 2 3 4 5 6
COMMON COMMON
7 8
COMMON COMMON
24VAC 24VAC
TRACS
COMMON
5
unt-110
Figure 1: Unitary Controller (UNT)
You may use the UNT 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 for Windows User’s Manual (FAN 637.5).
The Unitary Controller is available in different hardware sets to suit
different environmental and application needs. Table 1 lists the common
features of the different hardware sets. Table 2 lists the differences by
model.
Description

Metasys UNT111-1 Specifications

General

Brand	Metasys
Model	UNT111-1
Category	Controller
Language	English