nVent Hoffman SPECTRACOOL NHZ43 User manual
NHZ43 Instruction Manual
SPECTRACOOL
Air Conditioner, HAzArdous LoCAtions
nHz43 ModeL
INSTRUCTION MANUAL
TABLE OF CONTENTS
WARRANTY AND RETURN POLICY
GENERAL SAFETY INFORMATION
DANGER
RECEIVING THE AIR CONDITIONER
CAUTION
MISE EN GARDE
HANDLING AND TESTING THE AIR CONDITIONER
HOW TO READ MODEL NUMBERS
TECHNICAL INFORMATION
GENERAL
SEQUENCE OF OPERATION
COOLING
STANDARD AND OPTIONAL COMPONENT OPERATION
SMART CONTROLLER
FOR COOLING (75-100 F RANGE)
REMOTE ACCESS CONTROL (OPTIONAL)
HEAD PRESSURE CONTROL (OPTIONAL)
115V/230V TO 10V TRANSFORMER (OPTIONAL)
DOOR SWITCH
ACTIVE CONDENSATE MANAGEMENT
WHEN USED WITH PURGE AND PRESSURIZED ENCLOSURES
SCHEMATICS AND WIRING DIAGRAMS
GENERIC 115V SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY)
GENERIC 230V SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY)
GENERIC 460V SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY)
GENERIC 115V WIRE DIAGRAM (ACTUAL UNIT OPTIONS MAY VARY)
GENERIC 230V WIRE DIAGRAM (ACTUAL UNIT OPTIONS MAY VARY)
GENERIC 460V WIRE DIAGRAM (ACTUAL UNIT OPTIONS MAY VARY)
DIMENSIONAL DRAWING
WARM
AIR OUT
AMBIENT
AIR IN
CLEANABLE, REUSABLE
ALUMINUM INLET AIR FILTER
PULLS OUT FRONT
29.31
744.5
43.00
1092.1
COOL
AIR OUT
ENCLOSURE
AIR IN
REMOVABLE
HANGING TABS
DOOR SWITCH/
MALFUNCTION ALARM
MATING CONNECTOR
(SHIPPED LOOSE)
ACCESS HOLE TO
.375 [9.5] O.D. DRAIN STUB
11.50
292.1
9.37
238.1
.77
19.6
14.00
355.7
1.25
31.8
2X
9.00
228.6
7.88
200
5.00
127
10.01
254.3
.50
12.7
7.88
200
2X
7.88
200
2X
8.88
225.4
2X
7.88
200
8.00
203.2
35.80
909.3
POWER
INPUT
DOOR SWITCH/
MALFUNCTION ALARM
CONNECTOR
REMOTE ACCESS
CONTROLLER
(OPTIONAL)
SMART
CONTROLLER
GENERAL SAFETY INFORMATION
DANGER
INSTALLATION INSTRUCTIONS
CAUTION
MISE EN GARDE
SMART CONTROLLER
INTRODUCTION
ENERGIZING THE CONTROLLER
CONTROL STATUS INDICATION
SYMBOL COLOR ICON ON ICON FLASHING
DISPLAYING AND CHANGING PROGRAM VARIABLES
Access:
Navigation:
Adjust:
NOTE: The display will revert to normal temperature display mode if no buttons are pressed
for 60 seconds.
OPERATING PARAMETERS
Parameter Default Value Range Description
ALARM PARAMETERS
Parameter Default Value Description
DISPLAYING TEMPERATURE SENSOR #2
COMPRESSOR RESTART TIME DELAY
ALARM OUTPUT CONTACT
ALARM INPUT CONNECTION
ALARM CONDITION DISPLAY
Alarm Mnemonic Description Cause Result Alarm Relay
REMOTE ACCESS CONTROL
AIR CONDITIONER UNIT COMMUNICATION FEATURES
USB COMMUNICATION
ETHERNET COMMUNICATION
Note: ACU has a default IP Address of 192.168.1.2
SOFTWARE AND CONFIGURATION FILE DOWNLOADS
USING THE PC INTERFACE TOOL
USB COMMUNICATION MODE
NOTE: Before connecting unit to the PC, make note of the comm ports present. After the unit
is connected to the PC, a new comm port will be added to the list. Use this new comm port.
ToolsUse Ethernet
Use EthernetComm Port Device IPCommunity
Comm PortTools
VIEWING AIR CONDITIONER UNIT VALUES
ACU Values
Enable Comm
Disable Comm
CHANGING AIR CONDITIONER UNIT VALUES
ACU Values
Settings
Change Setting
ACU Values
VIEWING AND CHANGING ETHERNET INFORMATION
Ethernet Info
Read Ethernet Info
Use DHCP Server
Load Ethernet Info
Use DHCP Server
Load Ethernet Info
ETHERNET COMMUNICATION MODE
ToolsUse Ethernet
Use EthernetComm PortDevice IPCommunity
Device IPCommunity
Each unit has two community strings. One is a Read/Write community string (defaulted to
‘private’) that can be changed by the customer (must be 4 to 8 characters long). The other is a
Read-Only community string (‘public’) and cannot be changed.
VIEWING AIR CONDITIONER UNIT VALUES
ACU Values
Enable Comm
Disable Comm
CHANGING AIR CONDITIONER UNIT VALUES
ACU Values
Settings
Change Setting
ACU Values
VIEWING AND CHANGING ETHERNET INFORMATION
Ethernet Info
Read Ethernet Info
Use DHCP Server
Load Ethernet Info
Use DHCP Server
Load Ethernet Info
ALARM LOG ACCESSIBLE WITH SNMP
Table of contents
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