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SPECTRACOOL N280446G050
nvent SPECTRACOOL N280446G050 User Manual
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© 2022 nVent
89215756
Rev
. A
P/N 89215756
SPEC
TRACOOL
Air Condi
tioner
n28 Model
INSTRUC
TION MANU
AL
2
Table of Contents
Table of Contents
2
Warranty and Return Policy
3
Receiving the Air Conditioner
3
Handling and Testing the Air Conditioner
3
How to Read Model Numbers
3
For Cooling (75-100 F Range)
4
For Heating (55-65 F Range)
4
Technical Information
4
Sequence of Operation
4
Heating
4
Cooling
4
Standard and Optional Component Operation
4
Thermostat
4
Remote Access Control (Optional)
4
Head Pressure Control (Optional)
4
Schematics and Wiring Diagrams for Thermostat Control
5
Generic 115V 1-Phase Schematic (Actual Unit Options May Vary)
5
Generic 230V 1-Phase Schematic (Actual Unit Options May Vary)
5
Generic 460V 1-Phase Schematic (Actual Unit Options May Vary)
6
Generic 115V 1-Phase Wire Diagram (Actual Unit Options May Vary)
7
Generic 230V 1-Phase Wire Diagram (Actual Unit Options May Vary)
8
Generic 460V 1-Phase Wire Diagram (Actual Unit Options May Vary)
9
Dimensional Drawing
10
With Thermostats
10
Installation Instructions
11
Digital Thermostat Controller (Optional)
12
Overview
12
Energizing the Controller
12
Control Status Indication
12
DISPLAYING and CHANGING PROGRAM Settings
15
To View or Access the Settings
15
Heat/Cool Operating Parameters
15
Alarm Parameters
15
Displaying Temperature Data on Screen
17
Compressor Restart Time Delay
17
Alarm Output Contact
17
Alarm Input Connection
17
Primary-Secondary (Ps) Mode
18
Connecting Units Together in Primary/Secondary Mode
18
Connecting Units Together in Lead/Lag Mode
19
Air Conditioner Unit Remote Communication Features
20
Usb Communication
20
Ethernet Communication
20
Using Hoffman Pc Interface Tool
21
Usb Communication Mode
21
Usb Communication Mode
22
Ethernet Communication Mode
23
Remote Access Control Pin-Out
24
Schematics and Wiring Diagrams for Remote Access Control
25
Generic 115V 1-Phase Schematic (Actual Unit Options May Vary)
25
Generic 230V 1-Phase Schematic (Actual Unit Options May Vary)
25
Generic 460V 1-Phase Schematic (Actual Unit Options May Vary)
26
Generic 115V 1-Phase Wire Diagram for Remote Access Control (Actual Unit Options May Vary)
27
Generic 230V 1-Phase Wire Diagram for Remote Access Control (Actual Unit Options May Vary)
28
Generic 460V 1-Phase Wire Diagram for Remote Access Control (Actual Unit Options May Vary)
29
Dimensional Drawing
30
With Remote Access Control
30
Installation Instructions with Remote Access Control
31
Maintenance
32
Compressor
32
Inlet Air Filter
32
How to Remove, Clean or Install a New Inlet Air Filter
32
Condenser and Evaporator Air Movers
33
Refrigerant Loss
33
Refrigerant Properties Chart (R134A)
33
Unit Characteristics
34
Functional Data
34
Service Data
35
Components List
35
N280416GXXX Pressure Tables
36
N280426GXXX Pressure Tables
37
N280446GXXX Pressure Tables
38
F-Gas Information
38
Trouble Shooting
40
Basic Air Conditioning Trouble Shooting Check List - Thermostat Version
40
Symptoms and Possible Causes - Thermostat Version
41
Basic Air Conditioning Trouble Shooting Check List - Remote Access Control Version
42
Symptoms and Possible Causes - Remote Access Control Version
43
4
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nvent SPECTRACOOL N280446G050 Specifications
General
Cooling Capacity
2000 BTU/hr
Voltage
115 VAC
Power Supply
1-phase, 60Hz
Enclosure Type
NEMA 12
Operating Temperature
68 to 131 °F (20 to 55 °C)
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