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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 non­compliance.

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.

IMPORTANT

All illustrations in this instruction are typical and do 

not always represent the exact appearance of the 

equipment. 

IMPORTANT

The  compressor  in  this  unit  contains  PVE 

oil  (Polyvinylether).  PVE  oil  is  formulated  for 

 

hydrofluorocarbon  (HFC)  refrigerants,  such  as  HFC-

410A, which this system contains. While it may have 

some miscibility properties with mineral­based oil and 

POE oil (Polyolester), it is not recommended to mix PVE 

oil with any other type of refrigerant oil.

Model Number Identification

M  WH  A  009  S  4 ­ 1  P

Unit Type 

WH = Wall­Mounted Non­Ducted Unit

Series Type 

M = Mini­Split

Voltage 

L = 115V­1 phase­60Hz 

P = 208/230V­1 phase­60Hz

WALL-MOUNTED INDOOR UNITS

Cooling Efficiency

 

S = Standard Efficiency

Major Design Sequence 

A = First Generation

Nominal Cooling Capacity 

009 = 0.75  ton 

012 = 1 ton 

018  = 1.5 tons 

024 = 2 tons

Refrigerant Type 

4 = HFC­410A

Minor Design Sequence 

1 = 1st Revision

M  H  A  009  S  4  S ­ 1  P

Series Type 

M = Mini­Split

OUTDOOR SINGLE ZONE HEAT PUMP UNITS

Cooling Efficiency

 

S = Standard Efficiency

Major Design Sequence 

A = First Generation

Nominal Cooling Capacity 

009 = 0.75  ton 

012 = 1 ton 

018  = 1.5 tons 

024 = 2 tons

Refrigerant Type 

4 = HFC­410A

Refrigerant Circuits 

S = Single Circuit

Minor Design Sequence 

1 = 1st Revision

Voltage 

L = 115V­1 phase­60Hz 

P = 208/230V­1 phase­60Hz

Unit Type 

H = Heat Pump

Summary of Contents for MWHA009S4-1L

Page 1: ...unit assembly must be thoroughly cleaned following final construction clean up All mini split operating conditions must be verified ac cording to these installation instructions MHA Series Units SING...

Page 2: ...umbers Table 2 Component Catalog Number Cross Reference Product Capacity Voltage Lennox Model Number Catalog Numbers Wall Mounted Indoor Unit 9K 115V MWHA009S4 1L 17K07 Wall Mounted Indoor Unit 12K 11...

Page 3: ...bility properties with mineral based oil and POE oil Polyolester it is not recommended to mix PVE oil with any other type of refrigerant oil Model Number Identification M WH A 009 S 4 1 P Unit Type WH...

Page 4: ...1 2 13 1 2 13 MHA009S4S BOTTOM VIEW FRONT VIEW SIDE VIEW SIDE VIEW 12 5 8 322 11 1 4 286 2 3 8 60 3 5 8 92 DRAIN HOLE bottom of unit 11 3 4 298 Figure 2 9K Outdoor Unit Dimensions Inches mm BOTTOM VIE...

Page 5: ...425 9 1 8 232 5 127 31 5 8 803 7 1 2 191 11 3 4 298 1 3 4 44 Figure 7 12K Indoor Unit Wall Plate Dimensions Inches mm MHWA018S4 Left Rear Hole 2 1 2 in 64 mm diameter Right Rear Hole 2 1 2 in 64 mm d...

Page 6: ...m 10 254 Minimum 10 254 Minimum AIR FLO W AIR FLO W CLEARANCE NOTES FOR MULTIPLE UNITS If the height of the wall C is less than or equal to the height of the smallest unit A the distance from the unit...

Page 7: ...cient space around unit for proper operation and maintenance Install unit a minimum of 3 feet 1m away from any antenna power cord line radio telephone security system or intercom Electrical interferen...

Page 8: ...ded refrigerant piping connections and field provided flexible condensate piping are long enough to enable final field connections after unit is installed on wall mounting plate use field provided tap...

Page 9: ...and vibration of the unit where the operation noise will not be amplified Choose a location where the hot air discharged from the unit or the operation noise will not be a nuisance to neighbors Avoid...

Page 10: ...the outdoor unit as illustrated in Figure 24 Avoid Defrost Water Ice Hazard Air Inlet Air Outlet Figure 22 Outdoor Unit on Brackets above Snow Line Air Outlet Air Inlet 12 in 305 mm 79 in 2007 mm Fig...

Page 11: ...oor Unit to Hanging Brackets If the outdoor unit is installed on field provided wall mounting brackets use lag bolts or equivalent to secure the outdoor unit to the bracket Minimum rear clearance can...

Page 12: ...ections Male to Female Connection Table 5 Refrigerant Piping and Indoor Unit Connection Sizes Size Btuh Liquid Line in Suction Line in 9K 1 4 3 8 12K 1 4 1 2 18K 1 4 1 2 24K 3 8 5 8 A B CANT ON THE OU...

Page 13: ...s Cooling or heating efficiency drops Moisture in the refrigerant circuit may freeze Water may lead to corrosion of parts in the refrigera tion system The line set between the indoor and outdoor units...

Page 14: ...tween indoor and outdoor units Outdoor Unit Refer to unit nameplate for minimum circuit ampacity and maximum over current protection size Make all electrical power wiring connections at the outdoor un...

Page 15: ...AC 4 16AWG 16A 20A Outdoor to Main Power L N and GND 09K 115VAC 3 16AWG 16A Indoor to Outdoor Wiring Communication Power 1 2 3 and GND 12K 115VAC 4 Stranded and unshielded 16AWG 15A 20A Outdoor to Mai...

Page 16: ...4 Note Th e progra mmable wired controlle r and L VM use the sam e port CN4 03 CN 2 C N201 NOTE COMPONENT IN DASH LINE IS OPTIONAL OR FIELD WIRING CN402 S5 FOR REMOTE ON OF FACTORY SETTING MODE REMOTE...

Page 17: ...CN 1 CN 2 CN 16 CN 50 CN 30 CN 29 CN 28 OUTDOOR CONTROL TP T5 T3 T4 Figure 37 12K 115VAC Outdoor Unit Wiring Diagram 4 WAY VALVE OU TDOOR FAN CN 7 3 6 CN 31 PAN HEATER CN 15 CN 60 CRANKCASE HEATER CN...

Page 18: ...nameplate If not do not start the equipment until you have consulted with the power company and the voltage condition has been corrected 7 Refer to the included user guide to operate the system using...

Page 19: ...ireless remote Double Check Line Set Connections During operation the pressure of the refrigerant circuit will increase This may reveal leaks that were not present during your initial leak check Take...

Page 20: ...20...

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