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UNT111-1
Metasys UNT111-1 User Manual
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52
UNT Controller—Unitary Control
ler (UNT)
R1
Lighting
Re
l
a
y
120 V
AC
24 VAC
fcwi
re
VA1
BINAR
Y IN
ANAL
OG IN
PUTS
BINARY OUTPUTS
Triac to
Com
m
on
Jum
p
er
AN
ALO
G
Fan
Relay
Power
Transformer
120/
24
VAC
TE1
RM-T
RM-SP
ON
COM
OFF
AC
COM
IN+
1
2
3
IN
24 V
AC
Figure 27: Fan Coil Wiring Example
Table 19: Fan Coil Bill of Materials
Component
Part Number
C1
Digital Controller
AS-UNT111-1
TE1
Zone Temperature Sensor
TE-6400 Metastat
VA1
Valve Actuator
VA-8052 Valve Actuator Assembly
R1
Lighting Relay
GE-RR7
Bill of Mate
rials
51
53
Table of Contents
Introduction
5
Description
5
Standards Compliance
6
Configuring the Controller
7
Using HVAC€PRO for Windows( Configuration Tool
7
Defining a UNT Control Device Object
7
Defining a UNT Control Device in Companion Software
9
Installation Procedures
11
Design Considerations
11
Tools Needed
11
Environmental Information
12
Mounting the Controller
12
Power Line Wiring Transient Noise Precautions
16
I/O and Communications Wiring Transient Noise Precautions
18
Wiring Details
19
Power Source and Loads
19
Wiring Precautions
21
Grounding and Isolation UNT110/111, 120/121, 140/141
22
Grounding and Isolation UNT110/111, UNT120/121, and UNT140/141 with Separate Load Transformer
23
Terminal Designations
25
Analog Inputs
30
Binary Inputs
31
Binary Outputs (Triac Jumper Information)
31
Analog Outputs
32
Zone Bus
32
Wiring to Unit Mounted Controls--UNT110/111 and UNT120/121
33
Wiring to RLY050/002 Relays
35
Wiring Sensors and Actuators
37
Networking the Controller
45
N2 Bus Overview
45
Installing the N2€Bus
46
Zone Bus Communications
48
Application Examples
51
Fan Coil Applications
51
Unit Vent Applications
53
Packaged Rooftop Applications
55
Heat Pump Applications
57
Downloading/Commissioning
59
Commissioning Procedures
59
Via Zone Bus
59
Via N2 Bus
59
Troubleshooting
61
Hardware Installation Inspection
61
Tools Needed for Troubleshooting
61
Installation Checkout
61
Troubleshooting the UNT Controller with HVAC PRO for Windows
67
Troubleshooting the N2 Bus
69
Ordering Information
71
Specifications
77
Appendix A: Precautions for Rooftop Installations
79
Appendix B: UNT100/101
91
4
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Metasys UNT111-1 Specifications
General
Brand
Metasys
Model
UNT111-1
Category
Controller
Language
English
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