LENNOX 21U35 Bipolar Ionizer Kit Instruction Manual

©2021

IAQ – AIR FILTRATION

508101-02
8/2021
Supersedes 508101-01

BIPOLAR

IONIZER KIT

INSTALLATION INSTRUCTIONS FOR BIPOLAR IONIZER KIT
USED WITH LG/LC/KG/KC/KH 024-300 UNITS

WARNING

Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Installation and service must be performed by a licensed professional installer (or equivalent), service agency or the gas supplier.

Shipping & Packing List

Package 1 of 1 contains the following:

1 – Bipolar ionizer assembly
1 – Bag assembly containing:

1- Wiring diagram
2- #10-16 x 5/8” sheet metal screws (3 on 092-210)
2- Screw-in wire ties (156-300 only)
1- Wire tie (156-300 only)
3- Edge protectors (156-300 only)
1- Power harness (LGH/LCH/KG/KC/KH 024-300 only)
1- Warning label

NOTE – Not all components provided in kit are used in each application.

Check packaging for shipping damage. Contact the last carrier immediately if any shipping damage is found.

CAUTION

As with any mechanical equipment, contact with sharp sheet metal edges can result in personal injury. Take care while handling this equipment and wear gloves and protective clothing.

General

The Bipolar Ionizer integrates with system controls for effective air cleaning. The brush-type ionizer produces both positive and negative ions. Ionization has been shown to effectively reduce harmful pathogens, pollutants and odors by the introduction of these positive and negative ions into the airstream. These Ions are dispersed into the occupied space through the duct system proactively reducing airborne contaminants.

Application

The Needlepoint Bipolar Ionizer (NBPI) kit is specifically designed for LG/LC/KG/KC/KH 024-300 units. The ionizer is equipped with dry contacts which allow a Building Automation System (BAS) to interface and indicate ionizer functionality.

Note – The BAS will be able to monitor units equipped with M4 Unit Controllers only. Units with an M3 Unit Controller or no controller need to be connected to a separate monitoring system.

The Ionizers are also equipped with a green LED which indicates power is on. When the blower is in operation, power is delivered to the Ionizers and ions are generated.

See table 1 for unit application.

TABLE 1

Unit

|

Part No.

---|---
LGM/LCM036-074|

21U35

|

622688-01

LGM/LCM092-150|

21U36

|

622688-02

LG/LC/KG/KC/KH 156, 180, 210| 21U37| 622688-03
LG/LC/KG/KC/KH 240|

21U38

|

622688-04

LG/LC/KG/KC/KH 300|

21U39

|

622688-05

LGH/LCH/KG/KC/KH 024-074|

22U14

|

622688-06

LGH/LCH/KG/KC/KH 092-150|

22U15

|

622688-07

Specifications

Ionizer dimension| 3.875″ L x 1.500″ W x 1.500″ H (98mm x 38mm x 38mm)
Lamp assembly dimension| 40.75” L x 2” W x 2.75” H (1035mm x 51mm x 60mm)
Triangular sheet metal panel dimension| 024-074 – 40.620″ L x 1.688″ W x 2.688″ H (1032mm x 43mm x 68mm)
LGM/LCM092-150 – 24.000″ L x 0.591″ W x 3.717″ H (610mm x 15mm x 94mm)
LGH/LCH/KG/KC/KH092-150 – 36.375″ L x 0.591″ W x 3.717″ H (924mm x 15mm x 94mm)
156-300 – 68.812″ L x 2.438″ W x 0.750″ H (1748mm x 62mm x 19mm)
Electrical power supply| 24V
Power consumption| <1 Watt
Temperature (outside of duct):
Relative humidity| 5°F to 158°F (-15°C to 70°C)
<95%.
Listings: Conforms to ANSI/UL Std. 867. Certified to CSA 22.2 #187
Specifications subject to change without notice.

Before Installation

• Turn off power to the rooftop unit.
• Open access to the control box, blower compartment and the filter section.

WARNING

| Electric shock hazard.
Can cause injury or death.
Disconnect all remote power supplies before opening any unit access panels.
Unit may have multiple power supplies.
Do not operate without access panels in place.

Install Ionizer

Affix warning label, provided in kit, in location shown in figure 2 for 024-150 units and figure 11 for 156-300 units.

IMPORTANT – Make sure unit is powered-off during ionizer installation, repair, and/or filter replacement.

024-074 Units

1- On the back side of the unit, remove one screw securing the horizontal supply air duct cover in place. See figure 1. Retain the screw to secure the back side of the ionizer bracket.
2- Install ionizer assembly on the blower deck to the left of the blower housing; secure with two provided screws. See figure 2.
3- On the back side of the unit, reinstall the retained screw engaging the back side of the ionizer bracket. See figure 2.

092-150 Units

1- Install Ionizer assembly on the blower deck to the left of the blower using 3 provided screws. See figure 3.

BACK SIDE OF UNIT – 024-074 UNITS

RETAIN THE SCREW TO SECURE THE BACK SIDE OF THE IONIZER BRACKET

FIGURE 1

1. REMOVE THE TOP RIGHT SCREW SECURING THE HORIZONTAL SUPPLY AIR COVER TO THE UNIT

INSTALL IONIZER – 024-074 (LGM SHOWN)

FIGURE 2

1. ON THE BACK SIDE OF THE UNIT, REINSTALL THE RETAINED SCREW IN THE SAME LOCATION ON THE DUCT COVER; BE SURE TO ENGAGE THE BACK SIDE OF THE IONIZER BRACKET
2. AFFIX WARNING LABEL (PROVIDED) ON 024-150 UNITS
3. SECURE FRONT OF BRACKET WITH TWO SCREWS

INSTALL IONIZER – 092-150

FIGURE 3

1. IONIZER ASSEMBLY
2. INSTALL IONIZER ASSEMBLY TO THE LEFT OF THE BLOWER; SECURE WITH THREE SCREWS

156-300 Units

1- Open the filter access door and remove the filters and filter puller.
2- Remove the screw securing the bottom of the upper filter bracket. See detail in figure 4.
3- Orient the ionizers toward the indoor coil and slide the ionizer assembly bracket between the upper and lower filter U-channels.
4- Using the provided screw, secure a screw-in wire tie where the bottom filter rack screw was removed. See figure 5.
5- Install provided edge protectors. See figure 4 for location.
6- Remove the screw securing the top of the upper filter bracket. See detail in figure 4.
7- Using the provided screw, secure a screw-in wire tie where the top filter rack screw was removed. See figure 5.
8- Unbundle ionizer wires and route through wire ties.

INSTALL IONIZER – 156-300

FIGURE 4

1. 20 TON SHOWN (5 IONIZERS)
2. REMOVE THE SCREW SECURING THE TOP OF THE UPPER FILTER RACK BRACKET
3. ONE EDGE PROTECTOR ON IONIZER BRACKET
4. REMOVE THE SCREW SECURING THE BOTTOM OF THE UPPER FILTER RACK BRACKET
5. LOWER FILTER BRACKET U-CHANNEL
6. SLIDE IONIZER BRACKET BETWEEN UPPER AND LOWER FILTER BRACKET U-CHANNELS
7. UPPER FILTER BRACKET U-CHANNEL
8. IONIZER BRACKET
9. TWO EDGE PROTECTORS ON FILTER RACK
10. EVAPORATOR COIL

SECURE IONIZER ASSEMBLY

FIGURE 5

1. SCREW-IN WIRE TIE
2. SECURE WIRE TIE AND IONIZER

Wiring Units With M4 Unit Controller

1- Make wiring connections as shown in:

Figure 6 – LGM/LCM036-074 Units
Figure 7 – LGM/LCM092-150
Figure 8 – LGM/LCM156-300

NOTE – The power harness provided in the kit is not used in LGM/LCM applications. LGM/LCM unit power wiring is factory-installed.

WIRING – 036-074

FIGURE 6

1. UNIT HARNESS
2. CONNECT WHITE WIRES
3. CONNECT RED WIRES
4. IONIZER HARNESS
5. CONNECT YELLOW WIRES
6. CONNECT ORANGE WIRES

WIRING – 092-150

FIGURE 7

1. UNIT HARNESSES
2. IONIZER HARNESSES
3. CONNECT RED WIRES
4. CONNECT WHITE WIRES
5. CONNECT YELLOW WIRES
6. CONNECT ORANGE WIRES

Configure M4 For Ionizer

1- Use the following mobile service app menu to configure the Unit Controller.

SETUP > INSTALL > RTU INFORMATION > CONFIGURATION ID2

2- Set position 6 to to the appropriate setting to enable the ionizer:

2=Bipolar Ionizer Installed
3=Both UV Lamp and Ionizer Installed

WIRING – 156-300

FIGURE 8

1. CONNECT P422 IONIZER PLUG TO P422 PLUG PROVIDED IN UNIT
2. SCREW-IN WIRE TIES (PROVIDED)
3. CONNECT P424 IONIZER PLUG TO P424 PLUG PROVIDED IN UNIT

Wiring Units With M3 Unit Controller – LGH/LCH036-300S

1- Locate the kit harness and cut the wires near the 3-pin plug. Discard plug.
2- Route the cut wire ends to the control area and the 2-pin plug to the filter or blower section. See figure 9, 10, or 11. Secure with provided wire ties.
3- Strip and connect the cut wires to P298 terminals D01 and C on the M3 Unit Controller. See figure 12.
4- Connect the 2-pin P422 plug (routed to the filter or blower section) to the ionizer P422. See figure 13.
5- Apply power to unit. Use the M3 to navigate through the following menu which enables the ionizer.

DATA > RTU OPTION > EDIT PARAMETER > ENTER DATA ID 186 > OPTION 3

6- To monitor ionizer operation, connect orange and yellow BAS ionizer wires to field-provided monitoring system if available. If the BAS signal is not used, bundle wires and secure together.

Wiring Units Without Unit Controller

1- Locate the kit harness and cut the wires near the 3-pin plug. Discard plug.
2- Route the cut wire ends to the control area and the 2-pin plug to the filter or blower section. See figure 9, 10, or 11. Secure with provided wire ties.
3- Strip and connect the cut wires to TB1 terminals G and C. See figure 14.
4- Connect the 2-pin P422 plug (routed to the filter or blower section) to the ionizer P422 plug. See figure 13. On 024-150 units, bundle excess wiring in blower section.
5- To monitor ionizer operation, connect orange and yellow BAS ionizer wires to field-provided monitoring system if available. If the BAS signal is not used, bundle wires and secure together.

ROUTE KIT HARNESS – KG/KC/KH 024-090

FIGURE 9

1. TB1
2. WHITE AND RED HARNESS WIRES
3. 2-PIN P422
4. BLOWER

ROUTE KIT HARNESS – KG/KC/KH 092-150

FIGURE 10

1. 2-PIN P422
2. WHITE AND RED HARNESS WIRES
3. TB1
4. BLOWER

ROUTE KIT HARNESS – LGH/LCH/KG/KC/KH 156-300S

FIGURE 11

1. AFFIX WARNING LABEL (PROVIDED) ON 156-300 UNITS
2. 2-PIN P422
3. M3 UNIT CONTROLLER
4. WHITE AND RED HARNESS WIRES

HARNESS WIRES TO M3 CONTROLLER – LGH/LCH

FIGURE 12

1. P298
2. WHITE
3. RED
4. TO P422 IN FILTER AREA

CONNECT PLUGS – LGH/LCH/KG/KC/KH 024-300 (156-300 SHOWN)

FIGURE 13

1. CONNECT 2-PIN P422 IONIZER PLUG TO P422 PROVIDED IN KIT
2. P298- DO1 & C

WIRE KIT HARNESS – KG/KC/KH (156-300S SHOWN)

FIGURE 14

1. TO P422 IN FILTER OR BLOWER SECTION
2. TB1 OR TB2
3. WHITE AND RED WIRES TO TB1 OR TB2-G AND -C

Maintenance

WARNING

Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Installation and service must be performed by a licensed professional installer (or equivalent), service agency or the gas supplier.

The ionizer was designed for low maintenance. The device should be checked semi-annually to confirm the brushes are clean for maximum output. If the carbon fiber brushes are dirty, to clean the device as follows:

1- Disconnect power.
2- Remove any accumulated dust on bristles of the brushes with either compressed air or a toothbrush.
3- Reconnect power.

Troubleshooting

If the unit is not working, check the following:

1- The supply fan is running and that the green LED light illuminates.
2- Check the power input connections to the ionization unit. Verify all connections are correct and tightened. Reconnect any loose wires as necessary.
3- Test dry contact wiring with multimeter set to continuity mode.

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