Table of Contents
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2017 Lennox Industries Inc.
©
Dallas, Texas, USA
Table of Contents
General ...........................................................................1
Included Parts.................................................................2
Compatible Indoor Units .................................................2
Model Number Identification ...........................................2
Typical Multi-Zone System Components ........................3
Outdoor Unit Dimensions ...............................................4
Outdoor Unit Clearances ................................................4
Torque Requirements for Caps and Fasteners...............5
Outdoor Unit Installation .................................................5
Placement Considerations ..........................................5
Direct Sunlight, Rain, Snow and Ice Protection ..........5
Prevailing Winds .........................................................6
Buried Refrigerant Pipe Protection .............................7
Outdoor Unit Condensate Piping ................................7
Securing the Outdoor Unit ..........................................7
Refrigerant Piping Connections ......................................8
Indoor Unit Installation ....................................................9
Connecting Multiple Capacity Indoor Units .................9
Indoor / Outdoor Unit Match-Ups ..............................11
Leak Test and Evacuation ............................................16
Leak Test ..................................................................16
Triple Evacuation Procedure .....................................16
Wiring Connections ......................................................16
Outdoor Unit .............................................................17
Indoor Units...............................................................17
Unit Start-Up .................................................................24
Refrigerant Charge .......................................................24
WARNING
This product contains a chemical known to the State
of California to cause cancer, birth defects, or other
reproductive harm.
INSTALLATION
INSTRUCTIONS
MPA, MPB and MLA
MULTI-ZONE OUTDOOR
MULTI-ZONE MINI-SPLIT OUTDOOR UNITS
(208/230V) --
507549-05
3/2017
Supersedes 10/2016
THIS MANUAL MUST BE LEFT WITH THE OWNER
FOR FUTURE REFERENCE
WARNING
Improper installation, adjustment, alteration, ser vice or
maintenance can cause property damage, personal
injury or loss of life.
Installation and service must be performed by a li censed
professional HVAC installer (or equivalent) or a service
agency.
WARNING
The clean Air Act of 1990 bans the intentional venting of
refrigerant (CFCs, HCFCs, and HFCs) as of July, 1992.
Approved methods of recovery, recycling or reclaiming
must be followed. Fines and/or incarceration may be
levied for non-compliance.
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
Refer to the Product Specifications bulletin (EHB) for more
product information.
These instructions are intended as a general guide and
do not supersede local or national codes in any way.
Authorities having jurisdiction should be consulted before
installation.
The MWMA, MWMB, M22A, M33A, M33B, MMDA, MCFA
and MCFB indoor units are matched with a two to five port
multi-zone outdoor heat pump unit to create a mini-split
system that uses HFC-410A refrigerant.
UNITS
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Related Manuals for Lennox MPA018S4M-*P
Summary of Contents for Lennox MPA018S4M-*P
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Page 1: Table Of Contents
INSTALLATION INSTRUCTIONS 2017 Lennox Industries Inc. © MPA, MPB and MLA Dallas, Texas, USA MULTI-ZONE OUTDOOR UNITS MULTI-ZONE MINI-SPLIT OUTDOOR UNITS (208/230V) -- 507549-05 3/2017 Supersedes 10/2016 THIS MANUAL MUST BE LEFT WITH THE OWNER FOR FUTURE REFERENCE Table of Contents WARNING General ................1... -
Page 2: Included Parts
Figure Parts Figure Installation and Drain connector 1 ea. Seal Ring owner’s manual Line Set Adapters MPA036S4M-*P MPA048S4M-*P MPA018S4M-*P MPA030S4M-*P MPB036S4M-*P MPB048S4M-*P MPB018S4M-*P MPB030S4M-*P MLA036S4M-*P MLA018S4M-*P MLA030S4M-*P 3 adapt. – 3/8” to 1/2” 3 adapt. – 3/8” to 1/2” 2 adapt. – 3/8” to 1/2”... -
Page 3: Typical Multi-Zone System Components
Typical Multi-Zone System Components MPORTANT - Condensate drain line must always be located at the bottom of the bundle.) Line set (wrapped in foam insulation) Wiring TAPE Condensate drain line (wrapped in foam insulation) Refrigerant Line Set, Condensate Line And Indoor / Outdoor Cable (field-provided) IMPORTANT - The refrigerant metering device for this system is... -
Page 4: Outdoor Unit Dimensions
Outdoor Unit Dimensions TYPICAL APPEARANCE OF UNITS Unit of Model Measurement inches 35-3/4 27-3/8 12-3/4 13-1/8 MPA018S4M-*P inches 37-1/4 25-1/4 31-7/8 15-1/2 MPA030S4M-*P MPA036S4M-*P inches 36-7/8 32-7/8 54-1/2 15-3/8 MPA048S4M-*P 1385 inches 21-1/4 27-5/8 13-1/4 13-3/4 MPB018S4M-*P inches 40-3/4 26-1/2... -
Page 5: Torque Requirements For Caps And Fasteners
• Choose a location where the hot air discharged from See the Lennox Service and Application Notes C-08-1 the unit or the operation noise will not be a nuisance for further details and information. to neighbors •... -
Page 6: Prevailing Winds
• The unit base should be elevated above the depth of average snows as illustrated in “Figure 6. Outdoor Unit on Brackets above Snow Line” on page 6 • In heavy snow areas, do not place the unit where drift- ing will occur as illustrated in “Figure 7. -
Page 7: Buried Refrigerant Pipe Protection
Buried Refrigerant Pipe Protection Prevailing Winter Winds from Air Inlet Side • All refrigerant lines must be insulated regardless of if it is buried Wind Barrier • In addition to insulating each line of piping, buried lines Inlet Air must rest inside a sealed, watertight conduit 12”... -
Page 8: Refrigerant Piping Connections
Securing Outdoor Unit to Slab, Frame, or Rails Both lines must be individually insulated. 1. The seal on the unit refrigerant piping connections If the outdoor unit is installed on a field-provided slab or should remain in place until the last possible moment. frame, use lag bolts or equivalent to secure the outdoor This will prevent dust or water from getting into the unit to the slab or frame. -
Page 9: Indoor Unit Installation
• The largest cpacity indoor unit must be connected to the lowest refirigerant connection ports on the outdoor unit. CANT ON THE OUTSIDE OF THE FLARE • The 24,000 Btu indoor unit is only allowed to be connected MPA048S4M, MPB048S4M MALE FLARE MLA036S4M outdoor units. - Page 10 OUTDOOR UNIT 33 ft. (10 m) for MPA 49 ft. (15 m) for MLA and MPB INDOOR UNIT Maximum Elevation - Outdoor Unit ABOVE Indoor Unit INDOOR UNIT MPA018S4M-*P MPA030S4M-*P MPA036S4M-*P MPA048S4M-*P Outdoor Unit Model No. MPB018S4M-*P MPB030S4M-*P MPB036S4M-*P MPB048S4M-*P...
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Page 11: Indoor / Outdoor Unit Match-Ups
Indoor / Outdoor Unit Match-Ups Table 4. Match-Ups Each system is formed of one outdoor unit and a selection Indoor Unit Line Set Outdoor No. of of indoor units as referenced in the Product Specifications Capacity Required Model Zones (EHB). Only these combinations are allowed. (Unit No.) (Liquid x Gas) NOTE: Each indoor unit must be piped AND wired to... - Page 12 Table 4. Match-Ups Table 4. Match-Ups Indoor Unit Line Set Indoor Unit Line Set Outdoor No. of Outdoor No. of Capacity Required Capacity Required Model Zones Model Zones (Unit No.) (Liquid x Gas) (Unit No.) (Liquid x Gas) 009 (C) 1/4 in.
- Page 13 Table 4. Match-Ups Table 4. Match-Ups Indoor Unit Line Set Indoor Unit Line Set Outdoor No. of Outdoor No. of Capacity Required Capacity Required Model Zones Model Zones (Unit No.) (Liquid x Gas) (Unit No.) (Liquid x Gas) 009 (C) 1/4 in.
- Page 14 Table 4. Match-Ups Table 4. Match-Ups Indoor Unit Line Set Indoor Unit Line Set Outdoor No. of Outdoor No. of Capacity Required Capacity Required Model Zones Model Zones (Unit No.) (Liquid x Gas) (Unit No.) (Liquid x Gas) 009 (D) 1/4 in.
- Page 15 Table 4. Match-Ups Table 4. Match-Ups Indoor Unit Line Set Indoor Unit Line Set Outdoor No. of Outdoor No. of Capacity Required Capacity Required Model Zones Model Zones (Unit No.) (Liquid x Gas) (Unit No.) (Liquid x Gas) 009 (B) 1/4 in.
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Page 16: Leak Test And Evacuation
there is any movement check system for leaks. Table 4. Match-Ups 5. After the system is found to be free of leaks: Indoor Unit Line Set Outdoor No. of • Close valve on nitrogen cylinder. Capacity Required Model Zones (Unit No.) (Liquid x Gas) •... -
Page 17: Wiring Connections
Wiring Connections IMPORTANT Install unit so that unit disconnect is accessible. Use specified wiring and cable to make electrical connections. Clamp cables securely and make sure that connections are tight to avoid strain on wiring. Insecure wiring connections may result in equipment failure and risk of fire. - Page 18 IMPORTANT All diagrams (Figure 23 through Figure 33) are typical wiring diagrams. Refer to the wiring diagram on the unit for actual wiring. 208/230V Indoor Unit B 208/230V Indoor Unit A 208/230V Outdoor Unit Terminal Block Terminal Block Terminal Block 1(A) 2(A) 3(A)
- Page 19 1(A) 2(A) 3(A) 1(B) 2(B) 3(B) 4 WAY CRANKCASE VALVE HEATER HEATER Figure 23. MPA018S4M-*P Outdoor Unit Wiring Diagram L-PRO H-PRO LOW PRESSURE SWITCH HIGH PRESSURE SWITCH INDOOR COIL OUTLET TEMP.SENSOR OUTDOOR TEMP. SENSOR T3 OUTDOOR COIL TEMP. SENSOR T5 COMPRESSOR DISCHARGE TEMP.
- Page 20 BLACK COMP BLUE CN12 CN11 CN20 4-WAY1 BLACK BLUE BLUE CN21 ORANGE DRIVER BOARD CN33 BLUE CN17 HEAT_Y CN10 CN54 CN22 BLUE ORANGE CN51 CN40 CN18 ORANGE CN44 HEAT_D ORANGE BLACK CN53 BLUE CN52 H-PRO indoor coil outlet temp. BLACK sensor L-PRO YELLOW...
- Page 21 BR OW N INDO OR COI L O UTL ET TEM P. SEN SOR BL UE OUTDOOR TEMPERATURE SE NSOR OUTDOOR COIL TEMPERATURE SEN COMPRE SSOR DI SCHARG E TEMPER ATURE SENSOR BL UE BL UE HE AT1 HE AT2 RE AC TO R 1(B) 2(B) 3(B) 1(A)
- Page 22 FM 1 BLACK CO MP BLUE CN20 4-WAY VALVE BLACK BLUE BLUE BLUE BLUE CN21 DRIVER BOARD CN33 BLUE CN17 HEAT_1 CN10 CN54 CN22 BLUE CN51 CN40 CN18 BLACK CN44 HEAT_2 BLACK CN53 BLUE CN52 H-P R O BLACK L-P R O YELLOW YELLOW C ODE...
- Page 23 INDOOR COIL OUTLET TEMP SENSOR OUTDOOR TEMP SENSOR OUTDOOR TEMP SENSOR COMPRESSOR DISCHARGE TEMP SENSOR D R IV E R B O A R D E X V E X V GN D INDUCTOR 1R25027 HE AT _1 HE AT _2 4 WAY CR AN KC AS E VALVE...
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Page 24: Unit Start-Up
AC CURRENT DETECTOR HE AT _1 HE AT _2 PAN HEATER COMPRESSOR DISCHARGE TEMP. SENSOR OUTDOOR COIL TEMP. SENSOR HE AT _2 OUTDOOR TEMP. SENSOR HE AT _1 INDOOR COIL OUTLET TEMP. SENSOR IND OO R C OIL OU TL ET TE MP .