Lennox MPC036S4S - User Manual

1
MINI-SPLIT SYSTEMS SERVICE MANUAL
Indoor and Outdoor Unit Information
100029
5/2022
Table of Contents
Indoor Unit Information ...................................3
1. M22A and M33C Cassette Non-Ducted Indoor Units ............... 3
1.1. ModelNumberIdentication ........................................................3
1.2. M22AIndoorUnitSpecications ..................................................3
1.3. M33CIndoorUnitSpecications .................................................4
1.4. M22AIndoorUnitDimensions .....................................................5
1.5. M33CIndoorUnitDimensions .....................................................6
1.6. M22AandM33CIndoorUnitClearances ....................................7
1.7. M22AandM33CIndoorUnitControlBoardSwitches
Location .......................................................................................8
1.8. M22AandM33CCondensateDrainTestProcedure ...................9
2. MMDB Ducted Indoor Units ......................................................10
2.1. MMDBModelNumberIdentication ..........................................10
2.2. MMDBIndoorUnitSpecications .............................................. 11
2.3. IndoorUnitBlowerData ............................................................12
2.4. MMDBIndoorUnitDimensions .................................................18
2.5. MMDBIndoorUnitClearances ..................................................19
2.6. CondensatePumpLift-MMDBandM22A/M33C .....................20
2.7. MMDBCondensateDrainTestProcedure.................................20
2.8. MMDBIndoorUnitGravityDrain ...............................................21
3. MWMC and 3WMC-036 Wall Mounted Indoor Units ............... 22
3.1. ModelNumberIdentication ......................................................22
3.2. IndoorUnitSpecications(009-012Ton)Units ......................23
3.3. IndoorUnitSpecications(018-030Ton)Units .......................23
3.4. IndoorUnitSpecications(3WMC) ...........................................23
3.5. IndoorUnitDimensions(MWMCand3WMC) ...........................24
3.6. IndoorUnitClearances(AllModelsandSizes) .........................25
3.7. MWMCand3WMC036S4UnitControlBoardSwitches
Location .....................................................................................25
3.8. DryModeOperation-MWMCand3WMC ................................26
3.9. TestRun-MWMCand3WMC ..................................................26
3.10. Double-CheckPipeConnections ...............................................26
3.11. AmbientTemperatureisBelow63°F(17°C) .............................27
4. MCFA and MCFB Ceiling / Floor Indoor Units ........................28
4.1. ModelNumberIdentication ......................................................28
4.2. IndoorUnitSpecications(018-048Ton)Units .......................28
4.3. IndoorUnitDimensions .............................................................29
4.4. IndoorUnitClearances ..............................................................30
4.5. MCFAandMCFBIndoorUnitControlBoardSwitches
Location .....................................................................................31
5. MFMA Floor Indoor Unit ...........................................................32
5.1. ModelNumberIdentication ......................................................32
5.2. IndoorUnitSpecications(012Ton)Unit ..................................32
5.3. IndoorUnitDimensions .............................................................33
5.4. IndoorUnitClearances ..............................................................33
6. Indoor and Outdoor Power and Communication
Wiring Requirements ............................................................... 34
6.1. Overview ....................................................................................34
6.2. WiringGuide ..............................................................................35
MCFA and MCFB
M22A and M33C
MMDB
MWMC and 3WMC036
MPC, 3PC, and MLB
Single Zone
MLB and MPC
Multi-Zone
MFMA
Please refer to service manual 100030 for indoor and
outdoor unit error codes and component diagnostics.

Lennox MPC036S4S Specifications

General

Cooling Capacity (BTU/h)	36, 000
SEER	16
HSPF	9.5
Sound Level (dB)	74
Refrigerant	R-410A
Stages	Single
Voltage (V)	208/230
Phase	1

Summary

M22 A and M33 C Cassette Non-Ducted Indoor Units

M22 A Indoor Unit Specifications

Lists technical specifications for the M22A model.

M33 C Indoor Unit Specifications

Details technical specifications for the M33C model.

MMDB Ducted Indoor Units

MMDB Model Number Identification

Explains the model number structure for MMDB ducted indoor units.

MMDB Indoor Unit Specifications

Lists detailed technical specifications for MMDB indoor units.

Indoor Unit Blower Data

MWMC and 3 WMC-036 Wall Mounted Indoor Units

Indoor Unit Specifications (009 - 012 Ton) Units

Lists specifications for MWMC/3WMC units in the 009-012 ton range.

Indoor Unit Specifications (018 - 030 Ton) Units

Provides specifications for MWMC/3WMC units in the 018-030 ton range.

Indoor Unit Specifications (3 WMC)

Lists specifications specifically for 3WMC indoor units.

Dry Mode Operation - MWMC and 3 WMC

Test Run - MWMC and 3 WMC

MCFA and MCFB Ceiling; Floor Indoor Units

Indoor Unit Specifications (018 - 048 Ton) Units

Lists technical specifications for MCFA/MCFB units in the 018-048 ton range.

MFMA Floor Indoor Unit

Indoor Unit Specifications (012 Ton) Unit

Lists technical specifications for the MFMA012S4 floor indoor unit.

Indoor and Outdoor Power and Communication Wiring Requirements

Overview

Wiring Guide

Offers detailed wiring guidance for single-zone mini-split systems, including wire gauge.

Single and Multiple Zone Outdoor Units

Model Number Identification

Explains the model number structure for MPC and MLB outdoor units.

MPC Single-Zone Specifications (0.75 - 1.5 Ton)

Lists MPC single-zone specifications for 0.75 to 1.5 ton units.

MPC Single-Zone Specifications (2 - 4 Ton)

Lists MPC single-zone specifications for 2 to 4 ton units.

3 PC Single-Zone Specifications

Lists 3PC single-zone specifications for 3 ton units.

MLB Single-Zone Specifications (0.75 - 2 Ton)

Lists MLB single-zone specifications for 0.75 to 2 ton units.

MLB Single-Zone Specifications (3 - 4 Ton)

Lists MLB single-zone specifications for 3 to 4 ton units.

MPC Multi-Zone Specifications (1.5 - 2.5 Ton)

Lists MPC multi-zone specifications for 1.5 to 2.5 ton units.

MPC Multi-Zone Specifications (3 - 4 Ton)

Lists MPC multi-zone specifications for 3 to 4 ton units.

MLB Multi-Zone Specifications (1.5 - 3 Ton)

Lists MLB multi-zone specifications for 1.5 to 3 ton units.

MLB Multi-Zone Specifications (4 Ton)

Lists MLB multi-zone specifications for 4 ton units.

Indoor; Outdoor Unit Combinations

MPC Multi-Zone System Combinations

Lists valid indoor/outdoor unit combinations for MPC multi-zone systems.

MLB Multi-Zone System Combinations

Lists valid indoor/outdoor unit combinations for MLB multi-zone systems.

Refrigeration Pipe Work

MPC and 3 PC Single-Zone Refrigerant Cycle Diagram

MPC Three-Zone Refrigerant Cycle Diagram

MPC Four-Zone Refrigerant Cycle Diagram

MPC Five-Zone Refrigerant Cycle Diagram

MLB Six-Zone Refrigerant Cycle Diagram

Single-Zone Piping Limitations

Details piping length and elevation limitations for single-zone systems.

Multi-Zone Piping Limitations

Outlines piping limitations for multi-zone systems, including line set elevations.

MPC Multi-Zone Outdoor Unit Connections and Line Set Usage

Table 7. MPC018 S4 M

Lists connection sizes for MPC018S4M outdoor unit with indoor units.

Table 8. MPC024 S4 M

Table 9. MPC030 S4 M

Figure 31. MPC036 S4 M

Table 10. MPC048 S4 M

MLB Multi-Zone Outdoor Unit Connections and Line Set Usage

Table 11. MLB018 S4 M

Table 12. MLB030 S4 M

Table 13. MLB036 S4 M

Table 14. MLB048 S4 M

Power and Communication Wiring for Systems

Installation Requirements

Torque Requirements

Pipe Length and Elevation

Start-Up

Adding Refrigerant - Single-Zone Systems

Adding Refrigerant - Multi-Zone Systems

Specifications and Operations

Table 4. Main Protection

Table 6. Compressor Preheating Functions

Table 7. Compressor Crankcase Heater

Pressure on Service Port

Cooling Charts

Heating Chart

Capacity Request Calculations

Defrost Control

Defrost Theory

Defrost Termination

Outdoor Fan Control

Four-Way Valve Control

Electronic Expansion Valve (EXV) Control