Johnson Controls UNT110-1 User Manual

6
UNT Controller—Unitary (UNT) Controller
1 2 3 4 5 6
1 2 3 4 5 6 7 8
BINA RY I NANALOG INPUTS BINARY OUTPUTS
DSI
1 2 3 4 5 6
ANALOG INPUTS
COMMON
ANALOG INPUTS
1 2 3 4 5 6
BI NARY I NPUT
1 2 3 4
TO
ZONE
STAT
+15 VDC
REF
N2-
N2+
24VAC
COM
ZBUS
Z BUS
24 VAC
+15 VDC
BI NARY OUT PUT
1 2 3 4 5 6
COMMON COMMON
7 8
COMMON COMMON
24VAC 24VAC
TRACS
COMMON
R
unt-110
Figure 1: Unitary (UNT) Controller
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 or 1637.5).
The UNT is available in different hardware sets to suit different
environmental and application needs. Table 2 lists the common features of
the different hardware sets. Table 3 lists the differences by model.
Table 2: Unitary Controller Hardware Characteristics--
Similarities
Characteristic Description
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
4 Binary Inputs
(4) 24 VAC input only (24 VAC provided)
(1) Momentary pushbutton from Zone Sensor for temporary occupancy mode (BI 5)
BI 4 may be used as an accumulator input for frequencies less than 2 Hz.
N2 Bus
Isolated
Zone Bus
(see Table 3)
Removable screw terminal block, Light-Emitting Diode (LED) Indication, 8-pin phone jack
on controller
24 VAC Power in
Termination
Removable screw terminal block
N2 Terminations
Removable screw terminal block

Johnson Controls UNT110-1 Specifications

General

Brand	Johnson Controls
Model	UNT110-1
Category	Controller
Language	English