Table of Contents
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©2018 Lennox Industries Inc. Dallas, Texas, USA
THIS MANUAL MUST BE LEFT WITH THE OWNER
FOR FUTURE REFERENCE
V22B
Compact 360° Cassette
V33B
360° Cassette
Medium-Static Concealed Duct Unit
High-Static Concealed Duct Units
VRF
VMDB
VHIB
USER'S MANUAL
VRF Indoor Units
VRF SYSTEMS -- Indoor Units
507922-02
05/2019
VOWA
One-Way Cassette
VOSB
Outside Air Unit
Wall-Mounted Non-Ducted Unit
Ceiling- or Floor-Mounted
1
Air Handler
VWMB
VCFB
Non-Ducted Unit
VVCB
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Summary of Contents for Lennox VRF V22B Series
- Page 1 USER’S MANUAL VRF Indoor Units ©2018 Lennox Industries Inc. Dallas, Texas, USA VRF SYSTEMS -- Indoor Units THIS MANUAL MUST BE LEFT WITH THE OWNER 507922-02 FOR FUTURE REFERENCE 05/2019 VOWA V22B One-Way Cassette Compact 360° Cassette VVCB Air Handler...
- Page 2 Safety Requirements WARNING ELECTRICAL SHOCK, FIRE, OR EXPLOSION HAZARD. If you do not follow these instructions exactly, a fire or explosion may result causing property dam age, personal injury or death. Failure to follow safety warnings exactly could result in dangerous operation, serious injury, death or property damage.
- Page 3 Parts Arrangement - Non-Ducted Indoor Units V22B or V33B Cassette VCFB Cassette may be adjusted to provide discharge Ceiling- or Floor-Mounted Non-Ducted Unit air from one, two, three or four sides. DISCHARGE AIR LOUVER GROUNDING SCREW (In control box) RETURN AIR DIFFUSER LOUVER RETURN AIR ADJUSTMENT LEVER...
- Page 4 Parts Arrangement - Ducted Indoor Units VMDB VVCB Air Handler Medium-Static Concealed Duct RETURN AIR (Filter) CONTROL BOX AIR FLOW BLOWER COMPARTMENT DISCHARGE AIR VHIB High-Static Concealed Duct CONDENSATE COIL DRAIN COMPARTMENT VOSB Outside Air Unit LIQUID PIPE GAS PIPE FILTER ACCESS RETURN AIR DUCT...
- Page 5 Louver Adjustments CAUTION VWMB Wall-Mounted Units Use the wired controller or the remote control to set the DO NOT adjust the louvers by hand. Louvers are position of the discharge air louvers. The louvers may adjustable only by using the wired controller or be set to automatically swing between the outward and remote control.
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Page 6: Maintenance
Maintenance WARNING Return Air Filters Blocked or dirty return air filters affect system oper ation ELECTRICAL SHOCK, FIRE, OR EXPLOSION HAZARD. and efficiency. Air filters should be checked monthly in Before performing any maintenance, power to unit order to ensure proper air flow to the in door unit. It may be must be off at the unit disconnect switch. -
Page 7: Filter Cleaning
V22B Ceiling Cassettes The V22B and V33B filters are accessed through the re turn air grille as shown in these illustrations. V33B Ceiling Cassettes Simultaneously slide grille release latches toward the middle as shown Pivot hinged grille downward Lift filter up and out to remove it from the unit. -
Page 8: Troubleshooting
Troubleshooting WARNING ELECTRICAL SHOCK, FIRE, OR EXPLOSION HAZARD. ever attempt to repair the indoor or outdoor unit yourself. System repairs must be performed by a licensed professional HVAC technician (or equivalent). If any of the following conditions exist, immediately turn the system (indoor and outdoor units) off at the unit disconnect switch and call a licensed professional HVAC technician (or equivalent) for repairs: •... - Page 9 The table below lists possible causes and solutions to some of the most common problems. Please review this information before calling for service. Symptom Possible Cause Possible Solution • Power failure. • Wait for power to be restored. • Power to unit is OFF or disconnected. •...
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Page 10: Error Codes
Error Codes Indoor units are equipped with either a small panel with four LEDs that flash to indicate system errors or a digital display that provides an error code. Refer to the appropriate table below to view the error codes. If the unit has a digital display, the error code will replace the temperature setting displayed on the front cover of the indoor unit. -
Page 11: Eeprom Error
Shown on Indoor Unit Receiver (LED Display) Flashing LED Lights Description Operation LED Flashes Slowly Fan coil in standby mode Operation LED Is Non Active Fan coil is in shutdown mode Operation LED Is Active Fan coil is in running mode Timer LED Is Active Fan coil is under timer control Operation And Timer LED Flash Fast... - Page 12 Technical Support 1-844-GET-VRF1 (1-844-438-8731) vrftechsupport@lennoxind.com www.LennoxVRF.com Download the app from the Apple App Store or the Google Play store.
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