Roof mount
HEX080QA series
Dimension drawing
Features Unit
◆ IP55 waterproof at external side
◆ "One touch" dry run test and dust cleaning
◆ Standalone temperature control W/K (W/
◆ Clear LED status indicator
◆ Dry contact alarm output
Design VDC
◆ Air to air heat exchange
◆ Rated voltage at 48V
◆ Reduntant fan quantity design
◆ High efficiency and reliable fan
◆ Easy installation and maintenance
Operating temperature range -10 ~ +65
* Note : The cooling capacity (W/K , W/°C or W/℉) is defined as Q/ (TI-TA)
Q : Heat dissipation (W) from inside of cabinet
TI : Return temperature of internal air circuit (K , °C or
TA : Ambient temperature of external air circuit (K , °C or ℉)
* Specifications are subject to change without notice.
Main feature Specification
Dimension (W x D x H)
Cooling capacity
Rated voltage 48
Operating current 1.5
Opearting power 72
Operating voltage range 40 ~ 60
Noise (1.5 meter) 64.0
Weight
*Note
mm
(inch)
VDC
A
W
°C
dB-A
Kg (Lb)
℉
555 x 500 x 265
(22 x 20 x 11)
)
80 (44)
22 (49)
℉
)
HEX080QA Heat Exchanger
Instruction Manual
Table of contents
1. Version ......................................................................................................... 1
2. Description ................................................................................................... 1
2-1 . General ............................................................................................... 1
2-2 . Specification ...................................................................................... 1
2-3. Environmental condition ................................................................... 2
3. Installation ................................................................................................... 2
3-1 . Outline drawing ................................................................................. 2
3-2 . Mounting panel cutout and waterproof foam sticking ................... 3
4. Electrical specification ................................................................................ 3
4-1. Connection and LED indicator (on HEX panel) ................................. 3
4-2. Standalone control mode.................................................................... 5
5. Mechanical feature ...................................................................................... 6
5-1. Thermal path and Airflow baffle ....................................................... 6
5-2. Configuration ..................................................................................... 6
6. Maintenance and Replacement .................................................................. 7
6-1. Maintenance ....................................................................................... 7
6-2. Replacement ...................................................................................... 8
7. MTBF and Reliability ................................................................................... 8
7-1. MTBF................................................................................................... 8
7-2. Relibability ......................................................................................... 8
8. Safety ............................................................................................................ 9
9. Accessory .................................................................................................... 9
9-1. Power cable ........................................................................................ 9
9-2. Function cable ................................................................................... 9
10. General Safety and Warnings .................................................................. 9
HEX080QA Heat Exchanger Instruction Manual
1. Version
Rev. Description Drawn Approved Issue date
00 Issue spec. Nick Wang Adam Chen 2016/1/25
01 Add section 10 Nick Wang Adam Chen 2016/6/10
2. Description
2-1 . General
Delta Heat Exchanger (HEX) is designed for direct air to air heat
exchange to remove heat from the cabinet.
The internal and the external air circulation loops of the HEX are
separated to prevent the introduction of dust, humidity and dirt. The fan on
the external air loop conforms to IP55 protection rating.
2-2 . Specification
Outline Dimension (W x D x H)
Cooling Capacity (*Note 1)
Rated Voltage VDC 48
Rated Current (*Note 2) A 2.0
Operating Voltage Range VDC 40 - 60
Operating Current A 1.5
Operating Power Consumption W 72
Acoustic Noise at 1.5M (SPL) dB-A 64.0 dB-A
Weight Kg (Lb) 15 (33)
Main feature Unit
mm
(in)
W/K (W/℉)
Model Number
HEX080QA
555 x 500 x 265
(22 x 20 x 11)
80 (44)
* Note1 : The cooling capacity (W/K , W/°C or W/℉) is defined as Q/ (TI-TA)
Q : Heat dissipation (W) from inside of cabinet
TI : Return temperature of internal air circuit (K , °C or ℉)
TA : Ambient temperature of external air circuit (K , °C or ℉)
*Note 2 : Rated current is announcement of safety
Page 1
2-3 . Environmental condition
Description Specification
HEX080QA Heat Exchanger Instruction Manual
Operating
Storage
Humidity
Ingress protection
(on external side)l
3. Installation
3-1 . Outline drawing
-10°C ~ +65°C (-14°F ~ 149°F)
-40°C ~ +70°C (-40°F ~ 158°F)
External air circuit: 0 ~ 100% RH
IEC60529 IP55 (NEMA 3)
GR-487 720hrs salt spray
(1) Material : SGCC sheet t=1.0mm
(2) Finish : Power paint , Color RAL7035
(3) Dimensional tolerance : ± 1mm [0.04”]
Page 2
HEX080QA Heat Exchanger Instruction Manual
3-2 . Mounting panel cutout and waterproof foam sticking
：
4. Electrical specification
4-1. Connection and LED indicator (on HEX panel)
Power Connection
on panel plate : CVILUX 3W3CS0000100000
mate with : CVILUX 3W3CP0000100000
COMM connection
on panel plate : CVILUX CD5115PA100
mate with : CVILUX CD5115SA100
Page 3
HEX080QA Heat Exchanger Instruction Manual
User can follow dry contact definition that is Normal Close (N.C.) to
detect abnormal status from pin 10 & pin 11
Definition N. C
Connection Pin 10 & Pin 11
Control board, NTC and fan are in
normal status
NTC resistance is over range such as
“open circuit” or “short circuit”
Fan speed is lower than 50% of
definition or fan is locked
Dry contact max. rating : 75VDC/50mA
LED indicator
INNER FAN / OUTER FAN / STATUS LEDs indicate fan and NTC
CLOSE
OPEN
OPEN
sensor status .
Depress "TEST" button to start auto-test of outer and inner fans
running from low to high speed. Turn off by depressing the “TEST” button
again .
INNER FAN
Normal GREEN
Failed* RED
Normal
Blinking
OUTER FAN STATUS
GREEN
RED
GREEN
RED
Blinking
N/A
(touch TEST / CLEAN)
Failed*
GREEN
Blinking
GREEN
Blanking
N/A
(touch TEST / CLEAN)
RED
RED
* FAN failed : Fan speed is lower than 50% of definition or fan is locked
* STATUS Failed : NTC resistance is over range such as “open circuit” or
“short circuit”
Page 4
NTC temperature sensor
User can switch inner sensor (on control panel) or
external sensor (COMM port Pin7 & Pin8 ) via J8 connector on
controller as shown below to change sensor location .
4-2. Standalone control mode
HEX can detect ambient temperature to control cooling capacity .
Internal fan and external fan speed default settings are shown below
HEX080QA Heat Exchanger Instruction Manual
Cooling capacity (W/K) vs. Temperature
Inner fan speed vs. Temperature Outer fan speed vs. Temperature
Page 5
5. Mechanical feature
5-1 . Thermal path and Airflow baffle
With forced convection using the
axial fan , warm air generated by the
equipment will be blown into the
internal return opening and pass
though the HEX, then flow out from
internal supply opening. The air
supply of the cold air will be used to
cool down the system .
On the opposite side, cooler air
from the surrounding environment will
be drawn in from the external air inlet
side , and push the heat of the HEX
HEX080QA Heat Exchanger Instruction Manual
out from the external air exhaust side.
The thermal exchange path is
shown in right .
5-2 . Configuration
Item Q'ty
Description
1 1 Chassis assy
2 1 Internal fan tray
3 1 External fan tray
4 1 Heat exchange CORE
Page 6
6. Maintenance and Replacement
Be sure to SHUT DOWN the power before proceeding with any
maintenance or component replacement .
6-1. Maintenance
Monthly
Use brush and low pressure air to remove dust or any debris on both
internal/external air inlet and air outlet opening .
Quarterly
Follow below maintenance sequence
Internal loop maintenance :
* The maintenance is from internal side
HEX080QA Heat Exchanger Instruction Manual
* Use screw driver to remove the secured screw of internal fan
tray (Item 2)
* Disassemble the internal fan tray (Item 2) and disconnect fan
from controller . Note the connection location
* Use brush and low pressure air to remove the dust on
internal fan tray (Item 2) & heat exchange core opening
* Hold internal fan tray (Item 2) and connect fan to controller
* Re-attach internal fan tray (Item 2) and use screw driver to
secure screw with chassis assy (Item 1) .
External loop maintenance :
* The maintenance is from external side
* Use screw driver to remove the secured screw of external fan
tray (Item 3)
* Disassemble and hold external fan tray (Item 3)
* Use brush and low pressure air to remove the dust on external
fan tray (Item 3) & heat exchange core opening .
* Re-attach external fan tray (Item 3) and use screw driver to
secure screw with chassis assy (Item 1) .
Page 7
HEX080QA Heat Exchanger Instruction Manual
Test
Power on and depress “TEST” button on panel to proceed with
auto test . Follow LED status to check that HEX has resumed to normal
function after maintenance .
6-2. Replacement
Delta HEX is designed with dry contact alarm output and LED
indicator on panel shown below to describe abnormal situation .
Refer to Section 4-1 for checking abnormal part is internal fan ,
external fan or controller for abnormalities .
In cases of parts abnormality , Delta will follow the reading and submit
spare part(s) below for replacement .
Internal fan P/N : AFB1548EH-BJ51
External fan P/N : AFB1548VH-CE1L
Controller P/N : HEX080QA-000C
User can then refer to maintaince sequence on previous page , or
request Delta authorized support for assistance .
7. MTBF and Reliability
7-1. MTBF
L10 Fan life is expected to be a minimum 80,000 hours continuous
operation at 40°C with 15 ~ 65%RH .@ label rated voltage
7-2. Relibability
Test item Condition
High temperature IEC 60068-2-2
Low temperature IEC 60068-2-1
High temp. / High humidity IEC 60068-2-14 TEST Nb
Temperature cycle IEC 60068-2-3
Vibration ETSI 300 019-1-4 CLASS 4.1
Ingress protection
(External side)
IEC 60529 IP55 (NEMA 3)
GR-487 720hrs salt spray
Package bump IEC 60068-2-29
Page 8
8. Safety
9. Accessory
9-1. Power cable
HEX080QA Heat Exchanger Instruction Manual
9-2. Function cable
10. General safety and Warnings
* Some electronic parts have a high operating temperature .
Use caution at all times.
* Incorrect installation may cause damage and/or injury.
* Installation and maintenance should be performed only by qualified
personnel . Use caution at all times.
* Ensure the grounding wire is connected before powering on the system.
* Ensure the cover and the mounting hardware are secure upon installation.
* All the cables connected to the unit must confirm to UL standards.
Page 9
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