Table of Contents
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Please refer to 100042 for indoor and outdoor unit error codes and component diagnostics.
MWCB / MWHB Wall Mount Single-Zone
Table of Contents
1.
Indoor Units ............................................................. 2
1.1.
Model Number Identification ............................................. 2
1.2.
Indoor Unit Specifications ................................................. 2
1.3.
Indoor Unit Dimensions (All Models) ................................. 4
1.4.
Indoor Unit Clearances (All Models) ................................. 4
1.5.
Indoor Unit Wall Mounts (All Models) ................................ 5
2.
Indoor/Outdoor Matches ......................................... 5
3.
Connection to Centralized Controller .................... 6
3.1.
(Used with VRF Only) ....................................................... 6
3.2.
Controller ...........................................................................6
4.
Outdoor Units .......................................................... 7
4.1.
Model Number Identification ............................................. 7
4.2.
Specifications .................................................................... 7
4.3.
MCB Cooling Capacity ...................................................... 9
4.3.1.
- 009 (208/230V) ............................................... 9
4.3.2.
- 012 (115V) .................................................... 10
4.3.3.
- 012 (208/230V) ............................................. 10
4.3.4.
- 018 (208/230V) ............................................. 11
4.3.5.
- 024 (208/230V) ............................................. 11
4.4.
MHB Cooling Capacity .................................................... 12
4.4.1.
- 009 (115V) .................................................... 12
4.4.2.
- 009 (208/230V) ............................................. 12
4.4.3.
- 012 (115V) .................................................... 13
4.4.4.
- 012 (208/230V) ............................................. 13
4.4.5.
- 018 (208/230V) ............................................. 14
4.4.6.
- 024 (208/230V) ............................................. 14
4.5.
MHB Heating Capacity .................................................... 15
MINI-SPLIT SYSTEMS SERVICE MANUAL
Indoor Unit
MCB/MWCB and MHB/MWHB
Series Unit Information
MCB / MHB Single-Zone
Outdoor Units
4.5.1.
- 009 (115V) .................................................... 15
4.5.2.
- 009 (208/230V) ............................................. 15
4.5.3.
- 012 (115V) .................................................... 15
4.5.4.
- 012 (208/230V) ............................................. 15
4.5.5.
- 018 (208/230V) ............................................. 16
4.5.6.
- 024 (208/230V) ............................................. 16
4.6.
Outdoor Unit Dimensions (MCB and MHB) ..................... 17
4.7.
Outdoor Unit Clearances ................................................. 17
4.7.1.
Single Units ..................................................... 17
4.7.2.
Multiple Units .................................................. 18
5.
Refrigeration Pipe Work........................................ 19
5.1.
Single-Zone Refrigerant Cycle Diagram ......................... 19
5.2.
Single-Zone Piping Limitations ........................................ 19
5.3.
5.4.
Servicing Indoor Unit Refrigeration Circuit ...................... 20
5.4.1.
Collecting Refrigerant into Outdoor Unit ......... 20
5.4.2.
Air Purging with Vacuum Pump ...................... 20
5.5.
Refrigeration Circuit ........................................................ 21
5.5.1.
Circuit (Indoor and Outdoor Units) .................. 21
5.5.2.
Refrigerant Charging ....................................... 21
5.6.
Cooling Chart ..................................................................22
5.7.
Capacity Request Calculations ....................................... 22
1
100041 5/2022
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Table of Contents
Related Manuals for Lennox MWCB018S4
Summarization of Contents
Indoor Units
Model Number Identification
Explains the coding system for indoor unit model numbers.
Indoor Unit Specifications
Details electrical, airflow, and sound specifications for indoor units.
Indoor Unit Dimensions
Provides physical dimensions for various indoor unit sizes (9K, 12K, 18K, 24K).
Indoor Unit Clearances
Specifies required clearances around indoor units for proper installation and airflow.
Indoor Unit Wall Mounts
Details dimensions and mounting considerations for indoor unit wall plates.
Connection to Centralized Controller
Set Indoor Unit Address for Centralized Control
Guides on setting unique addresses for indoor units connected to a centralized controller.
Indoor Unit Connection Points for Centralized Controller
Identifies XYE terminals on indoor units for connecting to centralized control systems.
Outdoor Units
Model Number Identification
Explains the coding system for outdoor unit model numbers.
Specifications
Lists technical specifications for outdoor units, including electrical, refrigerant, and fan data.
MCB Cooling Capacity
Provides cooling capacity data for MCB units.
MHB Cooling Capacity
Provides cooling capacity data for MHB units.
MHB Heating Capacity
Provides heating capacity data for MHB units.
Outdoor Unit Dimensions
Provides physical dimensions for MCB and MHB outdoor units.
Outdoor Unit Clearances
Specifies clearances for outdoor unit installation.
Refrigeration Pipe Work
Single-Zone Refrigerant Cycle Diagram
Illustrates the refrigerant flow diagram for a single-zone system.
Single-Zone Piping Limitations
Outlines limitations and guidelines for refrigerant piping installation in single-zone systems.
Add Refrigerant after Long-Term System Operation
Step-by-step guide for adding refrigerant to systems after extended inactivity.
Servicing Indoor Unit Refrigeration Circuit
Covers refrigerant servicing for indoor units, including collection and purging.
Evacuation after Servicing the Outdoor Unit Refrigeration Circuit
Details evacuation of refrigeration circuits and refrigerant charging procedures.
Cooling Chart
Provides cooling capacity data in a chart format based on temperature conditions.
Capacity Request Calculations
Explains how to calculate the required cooling capacity for a system.
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