Lennox VRF VWMB Series

1
VWMB
Wall-Mounted Non-Ducted Unit
V22B
Compact 360° Cassette
V33B
360° Cassette
VMDB
Medium-Static Concealed Duct Unit
VHIB
High-Static Concealed Duct Units
VCFB
Ceiling- or Floor-Mounted
Non-Ducted Unit
VVCB
Air Handler
USER’S MANUAL
VRF SYSTEMS -- Indoor Units
507922-02
05/2019
VRF Indoor Units
THIS MANUAL MUST BE LEFT WITH THE OWNER
FOR FUTURE REFERENCE
VRF
©2018 Lennox Industries Inc. Dallas, Texas, USA
VOWA
One-Way Cassette
VOSB
Outside Air Unit

Lennox VRF VWMB Series Specifications

General

Brand	Lennox
Model	VRF VWMB Series
Category	Air Conditioner
Language	English

Summary

VRF Indoor Units Overview

Safety Requirements and Warnings

Important Operating Instructions

Parts Arrangement: Non-Ducted Indoor Units

V22 B or V33 B Cassette Unit Parts

Diagrams and parts identification for V22B/V33B cassette type indoor units.

VCFB Ceiling or Floor-Mounted Unit Parts

Diagrams and parts identification for VCFB ceiling/floor-mounted indoor units.

VWMB Wall-Mounted Unit Parts

Diagrams and parts identification for VWMB wall-mounted indoor units.

VOWA One-Way Cassette Unit Parts

Diagrams and parts identification for VOWA one-way cassette indoor units.

Parts Arrangement: Ducted Indoor Units

VMDB Medium-Static Duct Unit Parts

Diagrams and parts identification for VMDB medium-static ducted units.

VHIB High-Static Duct and VOSB Unit Parts

Diagrams and parts identification for VHIB ducted and VOSB outdoor units.

VVCB Air Handler Unit Parts

Diagrams and parts identification for VVCB air handler units.

Louver Adjustments

V22 BV33 B Cassette Louver Adjustments

Instructions for adjusting louvers on V22B/V33B cassette units.

VWMB Wall-Mounted Louver Adjustments

Instructions for adjusting louvers on VWMB wall-mounted units.

VCFB CeilingFloor-Mounted Louver Adjustments

Instructions for adjusting louvers on VCFB ceiling/floor-mounted units.

Maintenance Procedures

Unit Preparation for Idle Periods

Steps to prepare units for extended periods of inactivity.

Resuming Operation After Idle Periods

Steps to resume unit operation after prolonged inactivity.

Return Air Filter Maintenance

Guidance on checking, cleaning, and replacing air filters.

Filter Cleaning Instructions

Troubleshooting Common Issues

Troubleshooting Symptom Table

Error Codes and Indicators

LED Indicator and Fault Code Reference

Technical Support and App Download