Airphx IDU 250K User manual

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AIRPHX
IDU 250K Quick Reference Guide
Rev 1.0 ● Nov, 2022

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Contents
1Important Safety Instructions ......................................................................................................3
2Overview........................................................................................................................................4
Specifications.................................................................................................................................4
3Unit Overview................................................................................................................................5
4Modes of Operation......................................................................................................................6
Active Mode...................................................................................................................................6
Standby Mode ...............................................................................................................................6
Conditions that can cause the IDU 250K to go into standby mode: .........................................6
Fault................................................................................................................................................6
Conditions that can cause the IDU 250K to go into fault:..........................................................6
5Operations & Controls..................................................................................................................7
On/Off Switch ................................................................................................................................7
6Indicators.......................................................................................................................................7
Power Indicator.............................................................................................................................7
Active Indicator .............................................................................................................................7
Fault Indicator ...............................................................................................................................7
7Indicator Panel...............................................................................................................................8

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1Important Safety Instructions
1. CAUTION: The IDU 250K contains a plasma core with a glass element. Please handle it
with care.
2. WARNING: Do NOT install the IDU 250K if the unit has signs of damage. Doing so may put
you at RISK OF ELECTRICAL SHOCK.
3. WARNING: Do NOT defeat the front cover interlock (safety switch). Doing so may put you
at RISK OF ELECTRICAL SHOCK.
4. The IDU 250k is suitable for dry locations ONLY. Do NOT use outdoors, and do not expose
to liquids. High moisture levels may damage the unit's plasma core.
5. WARNING: Do NOT modify the unit in any way. Doing so may put you at RISK OF
ELECTRICAL SHOCK.
6. Modifying the unit will void the warranty.
7. WARNING. Do not remove the inner electronics cover. Doing so may put you at RISK OF
ELECTRICAL SHOCK.
8. Use the provided mounting hardware or equivalent.
9. WARNING: Do not operate the unit if it has a damaged power cord. Doing so may put you
at RISK OF ELECTRICAL SHOCK.
10. Do not stretch the power cord or place it under strain.
11. The use of an electrical extension cord is not permitted.
12. WARNING: Do not try to repair a damaged unit. Doing so may put you at RISK OF
ELECTRICAL SHOCK.
13. WARNING: This equipment has a grounding-type plug with a third (grounding) pin to
reduce electrical shock. This plug will only fit into grounding-type power outlets. If the
plug does not fit into the outlet, contact a qualified person to install the proper outlet. Do
not alter the plug in any way.
Note:
This product complies with the maximum allowable concentration of ozone of
0.050 parts per million by volume (ppmv) in a 24-h period.
The 8-hr TWA Ozone for this product is 0.000 ppmv when tested in a 30 m3 chamber
If further assistance is required, please contact your AIRPHX representative at 855- 424-7749 or
visit our website https://www.airphx.com/FAQs, where additional information can be found,
including user guides as well as helpful videos.

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2Overview
This quick reference guide briefly overviews the IDU 250K operation and the unit's status
indicators. For more detailed information about the operation of the IDU 250K, please
download the user guide at www.airphx.com/products.
Specifications
* The IDU 250K requires a minimum of 300 LFM to operate.
Note: Coverage capacity can vary by location based on several factors, including duct layout, air
circulation, damper controls, fresh air exchange rate, airflow, and bioburden. Contact an AIRPHX
representative to discuss capacity at your particular location.
Mounting Details
Induct
Duct cutout size 6 inches round hole
Mounting depth (into duct) 7.5 Inches
CFM 400 – 2,000
Minimum airflow (Linear feet per minute) 300 LMF*
Tonnage 2.0 – 10-ton unit
Power (VAC) 80 - 260
Frequency 50/60 Hz
Watts 120
AMPs 1.0 at 120VAC
Weight 5 lbs.
Height (enclosure) 9.5 inches
Width (enclosure) 9.5 inches
Depth (enclosure) 4 inches

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3 Unit Overview
Enclosure
Plasma Core
Airflow Sensor

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4 Modes of Operation
The IDU 250K has two modes of operation.
Active Mode
In this mode of operation, the IDU 250K will work in conjunction with the fan in your HVAC
system. The unit will run continuously, producing oxidizing molecules, as long as sufficient
airflow is present. The unit will switch from run to standby mode once the airflow stops.
Standby Mode
In standby mode, the IDU 250K is on, but it is not producing oxidizing molecules.
Conditions that can cause the IDU 250K to go into standby mode:
Lack of airflow.
Detection of a fault.
The HVAC fan is off.
Fault
If a fault is detected, the IDU 250K will go into standby mode.
Conditions that can cause the IDU 250K to go into fault:
Main circuit board failure.
Removal of the front cover.
Note: Solving the fault issue will automatically clear the fault condition allowing the unit to
resume operation.
Fault example:
Powering on the IDU 250K with its cover removed results in a fault. Replacing the cover will
automatically clear the fault. The unit will resume operations once airflow is detected. No further
actions are required.
Note: The IDU 250K runs automatically based on the airflow within the duct
system. i.e., if your HVAC system is running, the IDU 250K will be running and
producing oxidizing molecules.

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5 Operations & Controls
On/Off Switch
The On/Off switch switches the power of the IDU 250K on and off. The power switch is located
on the left side of the unit.
Markings on the switch represent the operation of the switch.
I – Indicates ON
O – Indicates Off
6 Indicators
The IDU 250K has three indicators on the unit's front cover. Each indicator represents a
condition/function and operates independently of the others.
Power Indicator
The green power indicator will illuminate, indicating the unit has power.
Active Indicator
The yellow active indicator will illuminate once the unit detects the minimal required airflow and
is in active mode.
Fault Indicator
The red fault indicator will illuminate if a fault is detected.

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7Indicator Panel
If further assistance is required, please contact your AIRPHX
representative at 855- 424-7749 or visit our website
https://www.airphx.com/FAQs, where additional information can
be found, including user guides as well as helpful videos.
This is an indication that there is power and that the IDU 250K is switched
on. There is no airflow and no fault is detected.
This is an indication that there is power, the IDU 250K is switched on,
airflow is detected, and no fault is detected.
Note: The yellow active indicator will illuminate for one minute during the
startup cycle. It will turn off and re-illuminate once airflow is detected.
This is an indication that there is power, the IDU 250K is switched on,
there is airflow, and a fault was detected.
Please refer to the IDU 250K User & Installation Guide for further details.
Standby Mode
Active Mode
Fault Detected
Power
Active
Fault
Power
Active
Fault
Power
Active
Fault