INSTALLATION INSTRUCTIONS

Transcription

1 0 Lennox Industries Inc. Dallas, Texas, USA INSTALLATION INSTRUCTIONS MPA, MPB and MLA MULTI-ZONE OUTDOOR UNITS MULTI-ZONE MINI-SPLIT OUTDOOR UNITS (08/0V) /0 Supersedes Table of Contents General... Included Parts... Compatible s... Number Identification... Typical Multi-Zone System Components... Unit Dimensions... Unit Clearances... Torque Requirements for Caps and Fasteners... Unit Installation... Placement Considerations... Direct Sunlight, Rain, Snow and Ice Protection... Prevailing Winds... Buried Refrigerant Pipe Protection...7 Unit Condensate Piping...7 Securing the Unit...7 Refrigerant Piping Connections...8 Installation...9 Connecting Multiple s...9 Indoor / Unit Match-Ups... Leak Test and Evacuation...7 Leak Test...7 Triple Evacuation Procedure...7 Wiring Connections...7 Unit...7 s...7 Unit Start-Up... Refrigerant Charge... WARNING This product contains a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm. 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 990 bans the intentional venting of refrigerant (CFCs, HCFCs, and HFCs) as of July, 99. 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, MA, MA, MB, 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-0A refrigerant.

2 Included Parts Check the components for shipping damage. If you find any damage, immediately contact the last carrier. Package contains the following: - Assembled (The assembled indoor unit will include accessories specific to the unit, see each indoor unit s section within this manual for accessories included with that unit.) - Assembled Unit and the following items: Parts Figure Qty Parts Figure Qty Parts Figure Qty Drain connector Installation and owner s manual ea. Seal Ring Adapters MPA08SM-*P MPB08SM-*P MLA08SM-*P adapt. /8 to / MPA00SM-*P MPB00SM-*P MLA00SM-*P adapt. /8 to / MPA0SM-*P MPB0SM-*P MLA0SM-*P adapt. /8 to / adapt. / to /8 MPA08SM-*P MPB08SM-*P adapt. /8 to / adapt. / to /8 Compatible s Voltage Voltage MWMA009S-*P 08/0V MA0S-*P 08/0V MWMA0S-*P 08/0V MMDA009S-*P 08/0V MWMA08S-*P 08/0V MMDA0S-*P 08/0V MWMA0S-*P 08/0V MMDA08S-*P 08/0V MA009S-*P 08/0V MMDA0S-*P 08/0V MA0S-*P 08/0V MCFB08S-*P 08/0V MA08S-*P 08/0V MCFA0S-*P 08/0V The,000 Btu indoor unit is only allowed to be connected to MPA08SM, MPB08SM and MLA0SM multi-zone outdoor units. Only second generation (-P) indoor units will work with MLA multi-zone outdoor units. Number Identification M P A 08 S M - P Series Type M = Mini-Split Unit Type L = Low Ambient Heat Pump P = Heat Pump Major Design Sequence A = st Generation B = nd Generation Nominal Cooling 08 =. ton 00 =. tons 0 = tons 08 = tons Refrigerant Circuits M = Multiple Circuits Refrigerant Type = HFC-0A Cooling Efficiency S = Standard Efficiency Voltage P = 08/0V- phase-0hz Minor Design Sequence = st Revision

3 Typical Multi-Zone System Components IMPORTANT - 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, Condensate Line And Indoor / Cable (field-provided) Return Air Filter IMPORTANT - The refrigerant metering device for this system is located in the outdoor unit. This makes it necessary to insulate the refrigerant lines individually to prevent sweating. Supply Air UV-rated tape (field-provided) Indoor unit wiring connections (under access plate) MWMA009 Shown Up to ports depending on outdoor unit model Indoor unit type may vary Utility Bundle One per indoor unit MPA08SM Shown Unit Appearance May Vary by Access cover for power and control wiring connections See Unit wiring diagram for individual system wiring. 08/0V Unit Terminal Block L L Up to ports depending on outdoor unit model Port E Liquid line shut off valve line shut off valve Port D Liquid line shut off valve line shut off valve Port C Liquid line shut off valve line shut off valve Port B Liquid line shut off valve line shut off valve Condensate drain line (field-provided, one per indoor unit) Access cover for service valves MPA08SM shown Port A Liquid line shut off valve line shut off valve Liquid and vapor line service and shut off valves Figure. Typical System Shown

4 Unit Dimensions C D E B A TYPICAL APPEARANCE OF UNITS MPA08SM-*P MPA00SM-*P MPA0SM-*P MPA08SM-*P Unit of Measurement A B C D E inches -/ 7-/8 -/ -/8 mm inches 7-/ -/ -7/8 -/ mm inches -7/8-7/8 -/ -/8 mm MPB08SM-*P MPB00SM-*P MPB0SM-*P MPB08SM-*P MLA08SM-*P MLA00SM-*P MLA0SM-*P inches -/ 7-/8 -/ -/ mm inches 0-/ -/ -7/8 -/8-7/8 mm inches -/ -/ -/8-7/8 mm 00 0 inches 0-/8 -/ -7/8 -/8-7/8 mm inches -/8 -/ -/8-7/8 mm Figure. Unit Dimensions - Inches (mm) Unit Clearances (0) Air Inlet (0) (0) (0) 79 (007) Air Outlet Minimum rear clearance can be inches ( mm) when mounted on brackets and with no obstructions on the other three sides. Figure. Unit Clearances - Inches (mm)

5 Torque Requirements for Caps and Fasteners When servicing or repairing HVAC components, ensure the fasteners are appropriately tightened. Table. Torque Requirements provides torque values for fasteners. IMPORTANT Only use Allen wrenches of sufficient hardness (0Rc - Rockwell scale minimum). Fully insert the wrench into the valve stem recess. Service valve stems are factory-torqued from 9 ft.-lbs. ( N*m) for small valves, to ft.-lbs. ( N*m) for large valves) to prevent refrigerant loss during shipping and handling. Using an Allen wrench rated at less than 0Rc risks rounding or breaking off the wrench, or stripping the valve stem recess. See the Lennox Service and Application Notes C-08- for further details and information. Table. Parts Torque Requirements Recommended Torque U.S. Newton-Meter- N Service valve cap 8 ft.-lb. Sheet metal screws in.-lb. Machine screws #0 7 in.-lb. Compressor bolts 7 ft.-lb. 0 Gauge port seal cap 8 ft.-lb. Unit Installation Placement Considerations CAUTION In order to avoid injury, take proper precaution when lifting heavy objects. Consider the following when positioning the unit: In coastal areas or other places with salty atmosphere of sulfate gas, corrosion may shorten the life of the unit. In coastal areas, the coil should be cleaned with potable water several times per year to avoid corrosive buildup (salt) Some localities are adopting sound ordinances based on the unit s sound level registered from the adjacent property, not from the property where the unit is installed. Install the unit as far as possible from the property line When possible, do not install the unit directly outside a window. Glass has a very high level of sound transmission Install unit level Ground Level Building Structure Figure. Install Unit Level Choose a place solid enough to bear the weight 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 installing the outdoor unit near a bedroom or other places where noise may cause a problem There must be sufficient space to carry the unit into and out of the site There must be unobstructed air flow around the air inlet and the air outlet The unit must not be installed in areas where a flammable gas leak may occur Install the outdoor unit a minimum of feet (m) away from any antenna, power cord (line), radio, telephone, security system, or intercom. Electrical interference and radio frequencies from any of these sources may affect operation Since water drains from the outdoor unit during various stages of operation, do not place anything which may be damaged by moisture under the unit Direct Sunlight, Rain, Snow and Ice Protection If the outdoor unit is subjected to prolonged exposure to direct sunlight with temperatures over 00 F (8 C) a canopy is recommended as illustrated in Figure. Unit on Pedestal (Stand) and Protective Canopy on page or Figure 0. Dog House-Style Shelter on page 7 IMPORTANT The construction of a canopy or shade is necessary because of an ambient limit control set to F (0 C) to protect the electronics. If the outdoor unit is placed in direct sunlight it is possible that the limit may activate and shut down the unit. Place unit away from overhanging roof lines which would allow water or ice to drop on, or in front of, coil or into unit. Construct a canopy as illustrated in Figure. Unit on Pedestal (Stand) and Protective Canopy on page

6 The unit base should be elevated above the depth of average snows as illustrated in Figure. Unit on Brackets above Snow Line on page In heavy snow areas, do not place the unit where drifting will occur as illustrated in Figure 7. Unit Air Flow Obstructed by Snow on page Carefully consider how to manage defrost water disposal to prevent ice from blocking walkways or creating a safety hazard near the outdoor unit as illustrated in Figure 8. Avoid Defrost Water Ice Hazard on page 79 in 007 mm Air Outlet in 0 mm Air Inlet Protective canopy Protective canopy Figure 7. Unit Air Flow Obstructed by Snow in 0 mm in 0 mm Air Inlet Air Outlet Pedestal (stand) Pedestal (stand) Side View Front View Figure. Unit on Pedestal (Stand) and Protective Canopy Figure 8. Avoid Defrost Water Ice Hazard Air Outlet Air Inlet Figure. Unit on Brackets above Snow Line Prevailing Winds Normally wind baffles are not required for a outdoor unit. However, in order to maximize reliability and performance, the following best practices should be followed. If unit coil cannot be installed away from prevailing winter winds, some method of protecting the coil is recommended. However, minimum clearances as reference in Figure. Unit Clearances - Inches (mm) on page must be observed at all times. Common application examples are: When prevailing winds are from the air inlet side, then position the wind barrier a minimum of inches (0 mm) from the unit as illustrated in Figure 9. Wind Barrier When prevailing wind is into the discharge side, then position the wind barrier a minimum 79 inches (007 mm) from the front of the unit as illustrated in Figure 9. Wind Barrier unit can be installed in a dog house style shelter as illustrated in Figure 0. Dog House-Style Shelter unit can be installed in a alcove or under a roof overhang as illustrated in Figure. Unit installed in Alcove

7 Prevailing Winter Winds from Air Inlet Side Wind Barrier Inlet Air Discharge Air Wind Barrier (0mm) Min. Distance 79 (007mm) Min. Distance Prevailing Winter Winds From Air Discharge Side Figure 9. Wind Barrier Buried Refrigerant Pipe Protection All refrigerant lines must be insulated regardless of if it is buried In addition to insulating each line of piping, buried lines must rest inside a sealed, watertight conduit The conduit must be designed so it cannot collect and retain water Unit Condensate Piping Condensate formed during the heating and defrost processes must be drained from heat pump units. Drain holes are provided in the base of the units to ensure proper drainage. Heat pumps must be raised when installed on a concrete pad or the ground to allow drainage to occur. If the heat pump unit is installed on wall mounting bracket, insert the provided drain connector into one of the inch ( mm) drain holes and attached a field-provided insulated drain hose to the connector. Use field-provided rubber plugs to cover any unused drain holes. in 0 mm in 0 mm in 0 mm in 0 mm NOTE - Minimum clearances shown. Figure 0. Dog House-Style Shelter in 0 mm in 0 mm NOTE - Minimum clearances shown. in 0 mm in 0 mm Drain Connector Chassis Figure. Condensate Drain Condensate Drain (location varies per model) Securing the Unit Slab or Roof Mounting Install the unit a minimum of inches (0 mm) above the roof or ground surface to avoid ice build-up around the unit. Place the unit above a load bearing wall or area of the roof that can adequately support the unit. Consult local codes for rooftop applications. CAUTION Roof Damage! This system contains both refrigerant and oil. Some rubber roofing material may absorb oil. This will cause the rubber to swell when it comes into contact with oil. The rubber will then bubble and could cause leaks. Protect the roof surface to avoid exposure to refrigerant and oil during service and installation. Failure to follow this notice could result in damage to roof surface. Figure. Unit installed in Alcove 7

8 Securing Unit to Slab, Frame, or Rails If the outdoor unit is installed on a field-provided slab or frame, use lag bolts or equivalent to secure the outdoor unit to the slab or frame. Four Field-provided Anchor Bolts Figure. Securing Unit to Slab Four Field-Provided Anchor Bolts Figure. Securing Unit to Rails Securing 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 be reduced to inches ( mm) when mounted on brackets and with no obstructions on the other three sides. Allow for condensate disposal when placing units above one another. Air Outlet in mm Air Inlet Figure. Securing Unit to Brackets Both lines must be individually insulated.. The seal on the unit refrigerant piping connections should remain in place until the last possible moment. This will prevent dust or water from getting into the refrigerant piping before it is connected.. CAREFULLY adjust refrigerant piping connections to suit the application.. Slowly loosen one of the flare nuts to release the factory nitrogen charge from the indoor units only.. Remove the flare nuts from the connections on the unit and discard the seal from each of the piping connections.. Slide the flare nuts onto the ends of the field-provided refrigerant piping before using a suitable flaring tool to flare the end of the copper pipe.. Apply recommended HFC-0A refrigerant lubricant to the outside of the flared refrigerant lines. IMPORTANT The compressor in this unit contains PVE oil (Polyvinylether). PVE oil is formulated for hydrofluorocarbon (HFC) refrigerants, such as HFC- 0A, which this system contains. While it may have some miscibility properties with mineral-based oil and POE oil (Polyolester), it is not recommended to mix PVE oil with any other type of refrigerant oil. 7. Align the threaded connections with the flared refrigerant lines. Tighten the flare nuts lightly at first to obtain a smooth match as illustrated in Figure. Making Connections (Male to Female Connection) on page Once snug, continue another half-turn on each nut which should create a leak-free joint. A torque wrench may be used to tighten flare nuts using Table. Flare Nut Torque Recommendations on page 7 recommendations. Do not over-tighten a flared joint. Flared connections should always be accessible and must be insulated to prevent condensation. 9. After refrigerant piping has been installed and checked for leaks, apply insulation over all flared connections. Table. Refrigerant Piping and Indoor Unit Connection Sizes Size (Btuh) Liquid Line in. Line in / /8 000 / / 8000 / / 000 /8 /8 Refrigerant Piping Connections Field piping consists of two copper lines connecting the outdoor unit to the indoor unit. Table. Refrigerant Piping and Connection Sizes lists the connection sizes. The connections are made using the provided brass flare nuts at the end of the refrigerant piping connections. 8

9 A B CANT ON THE OUTSIDE OF THE FLARE MALE FLARE CONNECTION Figure. Making Connections (Male to Female Connection) IMPORTANT Always use two wrenches when tightening flare nuts to avoid twisting refrigerant piping. DO NOT over-tighten flare nuts. outdoor wire pipe L(ft) Unit D L(ft) Unit C Unit B L(ft) Unit A L(ft) A B C D indoor Unit D Unit C Unit B Unit A Figure 8. Pipe and Wire Each Zone Separately TO INDOOR UNIT TORQUE WRENCH BACKUP WRENCH TO OUTDOOR UNIT Figure 7. Tighten Flare Nut Installation CAUTION In order to avoid injury, take proper precaution when lifting heavy objects. C(/in) C(/8in) B(/in) B(/8in) A(/in) A(/in) Figure 9. Connecting Multiple Indoor Units Please refer to the installation instruction included with the indoor unit for setup. IMPORTANT Pipe and wire to each zone separately. Test each indoor unit separately to ensure proper operation. Connecting Multiple s The largest cpacity indoor unit must be connected to the lowest refirigerant connection ports on the outdoor unit. The,000 Btu indoor unit is only allowed to be connected to MPA08SM, MPB08SM and MLA0SM outdoor units. NOTE: Each indoor unit must be piped AND wired to the correct zone piping connections and wiring terminals. Make sure that indoor unit A is wired to the zone A terminal block and connected to the appropriate refrigerant pipe connections. 9

10 INDOOR UNIT INDOOR UNIT INDOOR UNIT Maximum Elevation - Unit BELOW s 9 ft. ( m) NOTE - Minimum Length - 0 ft. ( m) per NOTE - Maximum Length Includes ALL piping in measurement NOTE - Maximum Difference in Elevation Between s - ft. (0 m). Maximum Furthest OUTDOOR UNIT INDOOR UNIT ft. (0 m) for MPA 9 ft. ( m) for MLA and MPB Maximum Elevation - Unit ABOVE INDOOR UNIT Unit No. Maximum Number of s Connections - Liquid / MPA08SM-*P MPB08SM-*P MLA08SM-*P MPA00SM-*P MPB00SM-*P MLA00SM-*P MPA0SM-*P MPB0SM-*P MLA0SM-*P MPA08SM-*P MPB08SM-*P Two Three Four Five () / / /8 () / / /8 () / / /8 ()/ / / () / / /8 () / / / Total Length of All Piping 98 ft. (0 m) 8 ft. ( m) 97 ft. (0 m) (7 m) Maximum Length - Furthest Indoor Unit ft. (0 m) 8 ft. ( m) 98 ft. (0 m) 98 ft. (0 m) Figure 0. Multi-Zone Systems with All s 0

11 Indoor / Unit Match-Ups Each system is formed of one outdoor unit and a selection of indoor units as referenced in the Product Specifications (EHB). Only these combinations are allowed. NOTE: Each indoor unit must be piped AND wired to the correct zone piping connections and wiring terminals. Make sure that indoor unit A is wired to the zone A terminal block and connected to the appropriate refrigerant pipe connections. Table. MPA & MPB Piping Connections and Usage - MPA08SM & MPB08SM / liq + /8 / liq + /8 (Liquid x ) 0 (A) / in. x / in. 009 (A) / in. x /8 in. / in. x /8 in. / in. x /8 in. 0 (A) / in. x / in. 0 (A) / in. x / in. 0 (B) / in. x / in. /8 x / in. gas pipe adapter is required for line set connection to outdoor unit (furnished with outdoor unit). / x /8 in. liquid pipe adapter is required for line set connection to the 08 outdoor unit (furnished with outdoor unit). / x /8 in. gas pipe adapter is required for line set connection to the 08 outdoor unit (furnished with outdoor unit). Table. MPA & MPB Piping Connections and Usage - MPA00SM & MPB00SM / liq + /8 / liq + /8 C / liq + /8 (Liquid x ) 08 (A) / in. x / in. 009 (A) / in. x /8 in. / in. x /8 in. / in. x /8 in. 0 (A) / in. x / in. / in. x /8 in. 08 (A) / in. x / in. 0 (A) / in. x / in. 0 (B) / in. x / in. 0 (B) / in. x / in. 08 (A) / in. x / in. 08 (A) / in. x / in. 08 (B) / in. x / in. 009 (A) / in. x /8 in. / in. x /8 in. 009 (C) / in. x /8 in. / in. x /8 in. 009 (C) / in. x /8 in. 0 (A) / in. x / in. 009 (C) / in. x /8 in. 0 (A) / in. x / in. 0 (B) / in. x / in. / in. x /8 in. 009 (C) / in. x /8 in. 08 (A) / in. x / in. 0 (A) / in. x / in. 0 (B) / in. x / in. 0 (C) / in. x / in. /8 x / in. gas pipe adapter is required for line set connection to outdoor unit (furnished with outdoor unit). / x /8 in. liquid pipe adapter is required for line set connection to the 08 outdoor unit (furnished with outdoor unit). / x /8 in. gas pipe adapter is required for line set connection to the 08 outdoor unit (furnished with outdoor unit).

12 Table. MPA & MPB Piping Connections and Usage - MPA0SM & MPB0SM / liq + / / liq + /8 C / liq + /8 D / liq + /8 (Liquid x ) / in. x /8 in. 08 (A) / in. x / in. 0 (A) / in. x / in. 0 (B) / in. x / in. 0 (B) / in. x / in. 08 (A) / in. x / in. 08 (A) / in. x / in. 08 (B) / in. x / in. / in. x /8 in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. / in. x /8 in. 009 (C) / in. x /8 in. 0 (A) / in. x / in. / in. x /8 in. 009 (C) / in. x /8 in. 08 (A) / in. x / in. 009 (C) / in. x /8 in. 0 (A) / in. x / in. 0 (B) / in. x / in. 009 (C) / in. x /8 in. 0 (B) / in. x / in. 08 (A) / in. x / in. 009 (C) / in. x /8 in. 08 (A) / in. x / in. 08 (B) / in. x / in. 0 (A) / in. x / in. 0 (B) / in. x / in. 0 (C) / in. x / in. 0 (A) / in. x / in. 0 (B) / in. x / in. 08 (A) / in. x / in. Table. MPA & MPB Piping Connections and Usage - MPA0SM & MPB0SM / liq + / / liq + /8 C / liq + /8 D / liq + /8 (Liquid x ) 0 (C) / in. x / in. 08 (A) / in. x / in. 08 (B) / in. x / in. / in. x /8 in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 009 (A) / in. x /8 in. / in. x /8 in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 0 (A) / in. x / in. / in. x /8 in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 08 (A) / in. x / in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 0 (A) / in. x / in. 0 (B) / in. x / in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 0 (B) / in. x / in. 08 (A) / in. x / in. 009 (D) / in. x /8 in. 0 (A) / in. x / in. 0 (B) / in. x / in. 0 (C) / in. x / in. 0 (A) / in. x / in. 0 (B) / in. x / in. 0 (C) / in. x / in. 0 (D) / in. x / in. /8 x / in. gas pipe adapter is required for line set connection to outdoor unit (furnished with outdoor unit). / x /8 in. liquid pipe adapter is required for line set connection to the 08 outdoor unit (furnished with outdoor unit). / x /8 in. gas pipe adapter is required for line set connection to the 08 outdoor unit (furnished with outdoor unit).

13 Table. MPA & MPB Piping Connections and Usage - MPA08SM & MPB08SM / liq + / / liq + / C / liq + /8 D / liq + /8 E / liq + /8 (Liquid x ) / in. x /8 in. 0 (A), /8 in. x /8 in. 0 (B) / in. x / in. 08 (A) / in. x / in. 0 (B) / in. x / in. 0 (A), /8 in. x /8 in. 08 (A) / in. x / in. 08 (B) / in. x / in. 08 (B) / in. x / in. 0 (A), /8 in. x /8 in. 0 (A), /8 in. x /8 in. 0 (B), /8 in. x /8 in. 009 (A) / in. x /8 in. / in. x /8 in. 009 (C) / in. x /8 in. / in. x /8 in. 009 (C) / in. x /8 in. 0 (A) / in. x / in. / in. x /8 in. 009 (C) / in. x /8 in. 08 (A) / in. x / in. / in. x /8 in. 009 (C) / in. x /8 in. 0 (A), /8 in. x /8 in. 009 (C) / in. x /8 in. 0 (A) / in. x / in. 0 (B) / in. x / in. 009 (C) / in. x /8 in. 0 (B) / in. x / in. 08 (A) / in. x / in. 009 (C) / in. x /8 in. 0 (B) / in. x / in. 0 (A), /8 in. x /8 in. 009 (C) / in. x /8 in. 08 (A) / in. x / in. 08 (B) / in. x / in. 009 (C) / in. x /8 in. 08 (B) / in. x / in. 0 (A), /8 in. x /8 in. 009 (C) / in. x /8 in. 0 (A), /8 in. x /8 in. 0 (B), /8 in. x /8 in. Table. MPA & MPB Piping Connections and Usage - MPA08SM & MPB08SM / liq + / / liq + / C / liq + /8 D / liq + /8 E / liq + /8 (Liquid x ) 0 (A) / in. x / in. 0 (B) / in. x / in. 0 (C) / in. x / in. 0 (B) / in. x / in. 0 (C) / in. x / in. 08 (A) / in. x / in. 0 (C) / in. x / in. 08 (A) / in. x / in. 08 (B) / in. x / in. 0 (B) / in. x / in. 0 (C) / in. x / in. 0 (A), /8 in. x /8 in. 0 (B) / in. x / in. 08 (C) / in. x / in. 0 (A), /8 in. x /8 in. 0 (C) / in. x / in. 0 (A), /8 in. x /8 in. 0 (B), /8 in. x /8 in. 08 (A) / in. x / in. 08 (B) / in. x / in. 08 (C) / in. x / in. 08 (B) / in. x / in. 08 (C) / in. x / in. 0 (A), /8 in. x /8 in. 009 (A) / in. x /8 in. / in. x /8 in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. / in. x /8 in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 0 (A) / in. x / in. / in. x /8 in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 08 (A) / in. x / in. / in. x /8 in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 0 (A), /8 in. x /8 in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 0 (A) / in. x / in. 0 (B) / in. x / in.

14 Table. MPA & MPB Piping Connections and Usage - MPA08SM & MPB08SM / liq + / / liq + / C / liq + /8 D / liq + /8 E / liq + /8 (Liquid x ) 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 0 (B) / in. x / in. 08 (A) / in. x / in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 08 (A) / in. x / in. 08 (B) / in. x / in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 08 (B) / in. x / in. 0 (A), /8 in. x /8 in. 009 (D) / in. x /8 in. 0 (A) / in. x / in. 0 (B) / in. x / in. 0 (C) / in. x / in. 009 (D) / in. x /8 in. 0 (B) / in. x / in. 0 (C) / in. x / in. 08 (A) / in. x / in. 009 (D) / in. x /8 in. 0 (C) / in. x / in. 08 (A) / in. x / in. 08 (B) / in. x / in. 0 (A) / in. x / in. 0 (B) / in. x / in. 0 (C) / in. x / in. 0 (D) / in. x / in. 0 (B) / in. x / in. 0 (C) / in. x / in. 0 (D) / in. x / in. 08 (A) / in. x / in. 009 (A) / in. x /8 in. / in. x /8 in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 009 (E) / in. x /8 in. / in. x /8 in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 009 (E) / in. x /8 in. 0 (A) / in. x / in. / in. x /8 in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 009 (E) / in. x /8 in. 08 (A) / in. x / in. Table. MPA & MPB Piping Connections and Usage - MPA08SM & MPB08SM / liq + / / liq + / C / liq + /8 D / liq + /8 E / liq + /8 (Liquid x ) / in. x /8 in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 009 (E) / in. x /8 in. 0 (A), /8 in. x /8 in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 009 (E) / in. x /8 in. 0 (A) / in. x / in. 0 (B) / in. x / in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 009 (E) / in. x /8 in. 0 (B) / in. x / in. 08 (A) / in. x / in. 009 (D) / in. x /8 in. 009 (E) / in. x /8 in. 0 (A) / in. x / in. 0 (B) / in. x / in. 0 (C) / in. x / in. 009 (D) / in. x /8 in. 009 (E) / in. x /8 in. 0 (B) / in. x / in. 0 (C) / in. x / in. 08 (A) / in. x / in. 009 (E) / in. x /8 in. 0 (A) / in. x / in. 0 (B) / in. x / in. 0 (C) / in. x / in. 0 (D) / in. x / in. 0 (A) / in. x / in. 0 (B) / in. x / in. 0 (C) / in. x / in. 0 (D) / in. x / in. 0 (E) / in. x / in. /8 x / in. gas pipe adapter is required for line set connection to outdoor unit (furnished with outdoor unit). / x /8 in. liquid pipe adapter is required for line set connection to the 08 outdoor unit (furnished with outdoor unit). / x /8 in. gas pipe adapter is required for line set connection to the 08 outdoor unit (furnished with outdoor unit).

15 Table 7. / liq + /8 / liq + /8 MLA Piping Connections and Line Set Usage - MLA08SM (Liquid x ) 009 (A) / in. x /8 in. / in. x /8 in. 0 (A) / in. x / in. / in. x /8 in. / in. x /8 in. 08 (A) / in. x / in. 0 (A) / in. x / in. 0 (B) / in. x / in. /8 x / in. gas pipe adapter is required for line set connection to outdoor unit (furnished with outdoor unit). / x /8 in. liquid pipe adapter is required for line set connection to the 08 outdoor unit (furnished with outdoor unit). / x /8 in. gas pipe adapter is required for line set connection to the 08 outdoor unit (furnished with outdoor unit). Table 8. MLA Piping Connections and Line Set Usage - MLA00SM / liq + / / liq + /8 C / liq + /8 (Liquid x ) 009 (A) / in. x /8 in. / in. x /8 in. 0 (A) / in. x / in. / in. x /8 in. / in. x /8 in. 08 (A) / in. x / in. / in. x /8 in. 0 (A), /8 in. x /8 in. 0 (A) / in. x / in. 0 (B) / in. x / in. 0 (B) / in. x / in. 08 (A) / in. x / in. 0 (A), /8 in. x /8 in. 0 (B) / in. x / in. 08 (A) / in. x / in. 08 (B) / in. x / in. 009 (A) / in. x /8 in. / in. x /8 in. 009 (C) / in. x /8 in. / in. x /8 in. 009 (C) / in. x /8 in. 0 (A) / in. x / in. 009 (C) / in. x /8 in. 0 (A) / in. x / in. 0 (B) / in. x / in. Table 8. MLA Piping Connections and Line Set Usage - MLA00SM / liq + / / liq + /8 C / liq + /8 (Liquid x ) / in. x /8 in. 009 (C) / in. x /8 in. 08 (A) / in. x / in. 08 (A) / in. x / in. 0 (B) / in. x / in. 009 (C) / in. x /8 in. 0 (A) / in. x / in. 0 (B) / in. x / in. 0 (C) / in. x / in. /8 x / in. gas pipe adapter is required for line set connection to outdoor unit (furnished with outdoor unit). / x /8 in. liquid pipe adapter is required for line set connection to the 08 outdoor unit (furnished with outdoor unit). / x /8 in. gas pipe adapter is required for line set connection to the 08 outdoor unit (furnished with outdoor unit).

16 Table 9. / liq + / / liq + / C / liq + /8 D / liq + /8 MLA Piping Connections and Line Set Usage - MLA0SM (Liquid x ) / in. x /8 in. 08 (A) / in. x / in. / in. x /8 in. 0 (A), /8 in. x /8 in. 0 (A) / in. x / in. 0 (B) / in. x / in. 0 (B) / in. x / in. 08 (A) / in. x / in. 0 (B) / in. x / in. 0 (A), /8 in. x /8 in. 08 (B) / in. x / in. 08 (A) / in. x / in. 08 (B) / in. x / in. 0 (A), /8 in. x /8 in. 0 (B), /8 in. x /8 in. 0 (A), /8 in. x /8 in. 009 (A) / in. x /8 in. / in. x /8 in. 009 (C) / in. x /8 in. / in. x /8 in. 009 (C) / in. x /8 in. 0 (A) / in. x / in. / in. x /8 in. 009 (C) / in. x /8 in. 08 (A) / in. x / in. 009 (C) / in. x /8 in. / in. x / in. 0 (A), /8 in. x /8 in. 009 (C) / in. x /8 in. 0 (A) / in. x / in. 0 (B) / in. x / in. 009 (C) / in. x /8 in. 0 (B) / in. x / in. 08 (A) / in. x / in. 009 (C) / in. x /8 in. 0 (A), /8 in. x /8 in. 0 (B) / in. x / in. 009 (C) / in. x /8 in. 08 (A) / in. x / in. 08 (B) / in. x / in. 0 (A) / in. x / in. 0 (B) / in. x / in. 0 (C) / in. x / in. Table 9. / liq + / / liq + / C / liq + /8 D / liq + /8 MLA Piping Connections and Line Set Usage - MLA0SM (Liquid x ) 0 (B) / in. x / in. 0 (C) / in. x / in. 08 (A) / in. x / in. 0 (B) / in. x / in. 0 (C) / in. x / in. 0 (A), /8 in. x /8 in. 0 (C) / in. x / in. 08 (A) / in. x / in. 08 (B) / in. x / in. / in. x /8 in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 009 (A) / in. x /8 in. / in. x /8 in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 0 (A) / in. x / in. / in. x /8 in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 08 (A) / in. x / in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 0 (A) / in. x / in. 0 (B) / in. x / in. 009 (C) / in. x /8 in. 009 (D) / in. x /8 in. 0 (B) / in. x / in. 08 (A) / in. x / in. 009 (D) / in. x /8 in. 0 (A) / in. x / in. 0 (B) / in. x / in. 0 (C) / in. x / in. 0 (A) / in. x / in. 0 (B) / in. x / in. 0 (C) / in. x / in. 0 (D) / in. x / in. /8 x / in. gas pipe adapter is required for line set connection to outdoor unit (furnished with outdoor unit). / x /8 in. liquid pipe adapter is required for line set connection to the 08 outdoor unit (furnished with outdoor unit). / x /8 in. gas pipe adapter is required for line set connection to the 08 outdoor unit (furnished with outdoor unit).

17 Leak Test and Evacuation Air and moisture remaining in the refrigerant system will have undesirable effects as indicated below: Pressure in the system rises Operating current rises Cooling or heating efficiency drops Moisture in the refrigerant circuit may freeze Water may lead to corrosion of parts in the refrigeration system The line set between the indoor and outdoor units must be leak tested and evacuated to remove any noncondensables and moisture from the system. Leak Test Use the following procedure to test for system leaks:. Connect the manifold gauge set and dry nitrogen gas cylinder to the liquid and gas service ports.. Open valve on nitrogen cylinder.. Pressurize the system per the pressure test specifications in Table 0. Pressure Test Specifications.. Check that the system pressure remains stable. If there is any movement check system for leaks.. After the system is found to be free of leaks: Close valve on nitrogen cylinder. Relieve the nitrogen pressure by: loosening the charge hose connector at the nitrogen cylinder. When the system pressure is reduced to normal, disconnect the hose from the cylinder. IMPORTANT Use only oxygen-free nitrogen (OFN). Triple Evacuation Procedure A Micron or Torr gauge must be used for this procedure.. Discharge the oxygen-free nitrogen and evacuate the system to a reading of 8000 Microns (8 Torr) using all service valves.. Break the vacuum by allowing nitrogen into the port connections (liquid and gas line pipes) until a positive pressure is achieved.. Evacuate the system to a reading of 000 Microns ( Torr).. Break the vacuum by allowing nitrogen into the port connections (liquid and gas line pipes) until a positive pressure is achieved. Evacuate the system to a minimum reading of 00 Microns (0. Torr).. For a moisture-free system, ensure the vacuum is held without movement for a minimum of hours. 7. If vacuum fails to hold, carry out steps through until vacuum holds. Table 0. Pressure Test Specifications bar psig Minimum of 0 minutes bar 0 psig Minimum of 0 minutes bar 70 psig Minimum of 0 minutes bar 0 psig hour. Stress test to prove the integrity of the complete installation. bar 70 psig hours. Lower system pressure test, after confirmation No. was successfully completed. 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. Wiring must be installed so that all cover plates can be securely closed. WARNING Electric Shock Hazard. Can cause injury or death. Unit must be rounded in accordance with national and local codes. Line voltage is present at all components when unit is not in operation. Disconnect all remote electric power supplies before opening access panel. Unit may have multiple power sources. CAUTION All terminal connections must be made as illustrated in the following diagrams. Improperly connected wiring could damage unit or cause communication errors between indoor and outdoor units. In the U.S.A., wiring must conform with current local codes and the current National Electric Code (NEC). In Canada, wiring must conform with current local codes and the current Canadian Electrical Code (CEC). Unit Refer to unit nameplate for minimum circuit ampacity and maximum over-current protection size Make all electrical power wiring connections at the outdoor unit Be sure to reattach all electrical box covers after connections are complete s Refer to the installation instruction included with the indoor unit for further details. 7

18 IMPORTANT All diagrams (Figure through Figure ) are typical wiring diagrams. Refer to the wiring diagram on the unit for actual wiring. 08/0V Unit Terminal Block 08/0V Terminal Block 08/0V Terminal Block L (A) (A) (A) (B) (B) (B) From Power Supply Unit Figure. Connection Diagram - Systems 0k and Below 08/0V Unit Terminal Block L (A) (A) (A) (B) (B) (B) (C) (C) (C) (D) (D) (D) (E) (E) (E) 08/0V Terminal Block 08/0V Terminal Block From Power Supply To E To Unit To C D Figure. Connection Diagram - Systems k and Above 8

19 INDOOR COIL OUTLET TEMP.SENSOR L-OUT T T T OUTDOOR TEMP. SENSOR OUTDOOR COIL TEMP. SENSOR COMPRESSOR DISCHARGE TEMP. CN CN8 CN CN CN9 B A ELECTRONIC EXPANSION VALVE L L (A) (A) (A) (B) (B) (B) WAY VALVE PAN CRANKCASE HEATER HEATER Figure. MPA08SM-*P Unit Wiring Diagram L-PRO LOW PRESSURE SWITCH H-PRO HIGH PRESSURE SWITCH INDOOR COIL OUTLET TEMP.SENSOR YELLOW CN8 T T T OUTDOOR TEMP. SENSOR OUTDOOR COIL TEMP. SENSOR COMPRESSOR DISCHARGE TEMP. CN CN C B A ELECTRONIC EXPANSION VALVE L (A) (A) (A) (B) (B) (B) (C) (C) (C) WAY VALVE PAN CRANKCASE HEATER HEATER Figure. MPA00SM-*P Unit Wiring Diagram 9

20 CN0 P OWER SUPPL Y COMP W V U TP FM DRIVER BOARD CN CN7 W V U CN CN CN 7 SV -WAY HEAT_Y HEAT_D ORANGE ORANGE CN CN CN0 ORANGE ORANGE CN CN0 CN CN MAIN BOARD CN CN A CN0 B CN C CN7 D CN8 M M M M EEV YELLOW L YELLOW CN T T H-PRO L-PRO 7 CN8 CN9 CN7 P- CN CN CN CN CN0 CN9 CN8 CN7 indoor coil outlet temp. sensor CODE COMP PART NAME COMPRESSOR CODE L PART NAME PFC INDUCTOR H-PRO L-PRO LOW PRESSURE SWITCH HIGH PRESSURE SWITCH EEV ELECTRIC EXPANSIVE VALVE T COMPRESSOR DISCHARGE TEMP. FM OUTDOOR DC FAN SV -WAY VALVE HEAT_Y HEAT_D CRANKCASE HEATER PAN HEATER T T CONDENSER TEMPERATURE SENSOR OUTDOOR AMBIENT TEMPERATURE SENSOR Figure. MPA0SM-*P Unit Wiring Diagram YELLOW W V U U V W COMP IPM & PFC BOARD CN Ferrite bead CH CN CN CN9 CN CN9 DCFAN CN8 CN CH 7 Ferrite bead CN7 CN DCFAN SV - W AY D Ferrite bead CH YELLOW CN P- CT CN CN9 CN CN C N 7 C N 8 L MAIN BOARD CN CN P- P- E CN D CN C CN B CN9 A CN7 WHITE L L XT XT (A) (A) (A) (B) (B) (B) (C) (C) (C) (D) (D) (D) (E) (E) (E) XT TO A TO B TO C TO D TO E CODE COMP CT PART NAME COMPRESSOR AC CURRENT DETECTOR D DIODE MODULE DCFAN,DCFAN OUTDOOR DC FAN HEAT_Y CRANKCASE HEATER HEAT_D PAN HEATER H-PRO HIGH PRESSURE SWITCH L PFC INDUCTOR L-PRO LOW PRESSURE SWITCH SV -WAY VALVE DISCHARGE TEMP. SENSOR OUTDOOR COIL TEMP. SENSOR T T T OUTDOOR TEMP. SENSOR HEA T_Y HEA T_D C N C N 0 C N C N 9 CN9 T T YELLOW H-PRO E D C CN CN0 CN B CN A CN TB-A B C D E CN CN8 L-PRO ELECTRONIC ELECTRONIC ELECTRONIC ELECTRONIC ELECTRONIC EXPANSION EXPANSION EXPANSION EXPANSION EXPANSION VALVE E VALVE D VALVE C VALVE B VALVE A E D C B A INDOOR COIL OUTLET TEMP. SENSOR T Figure. MPA08SM-*P Unit Wiring Diagram 0

21 BR OW N BL UE INDO OR COI L OUTL ET TEM P. SEN SOR OUTDOOR TEMPERATURE SE NSOR OUTDOOR COIL TEMPERATURE SEN SOR COMPRE SSOR DI SCHARG E TEMPER ATURE SENSOR BL UE BL UE WHIT E WHIT E HE AT HE AT RE AC TO R L L (A) (A) (A) (B) (B) (B) REACT0R R009A Figure 7. MPB08SM-*P Unit Wiring Diagram WHITE WHITE SV HEAT HEAT L (A) (A) (A) (B) (B) (B) (C) (C) (C) CRANKCASE HEATER PAN HEATER Figure 8. MPB00SM-*P Unit Wiring Diagram

22 ~ ~ ~ P OWE R S UP P LY CO MP W V U FM TP DRIVER BOARD CN C N9 W V U CN CN CN 7 SV -WAY VALVE HEAT_ HEAT_ CN CN CN0 RDE RDE CN CN0 CN CN MAIN B OA RD A CN0 B CN C CN7 D CN8 M M M M EXV EXV EXV EXV YELLOW L YELLOW CN T T H-PRO L-PRO 7 CN8 C N9 C N 7 P- CN CN C N C N CN0 CN9 C N 8 C N 7 CODE COMP PART NAME COMP RESSOR CODE L PART NAME PFC INDUCTOR SV EXV FM HEAT _ HEAT _ -WAY VALVE ELECTRIC EXPANSIO N VALVE OUTDOOR DC FAN CRANKCAS E HEAT ER PAN HEAT ER L-PRO TP TB T T LOW PRESSURE SWIT CH COMPRESSOR D ISCHARGE TEMPERAT URE SENSOR INDOOR COIL OUTLET TEMPERAT URE SENSOR OUTDOOR COIL TEMPERATU RE SENSOR OUTDOOR TEMPERAT URE SENSOR B LACK H-PRO HIGH PRESSURE SWIT CH Figure 9. MPB0SM-*P Unit Wiring Diagram YELLOW L YELLOW CH D CN CN CH CN CT CN P P CN CN P9 CN CN XT L L XT CODE COMP CT D EXV FM, FM HEAT _ PART NAME COMP RESSOR AC CURRENT DETECTOR DIODE MODULE ELECTRIC EXPANSIO N VALVE OUTDOOR DC FAN CRANKCAS E HEAT ER CH CN CN U V W MAIN BOARD CN CN9 HEAT_ H-PRO L L-PRO SV PAN HEATER HIGH PRESSURE SWIT CH PFC INDUCTOR LOW PRE SSURE SWIT CH -WAY VALVE V U W CO MP DR IVER B OARD FAN CH CN9 0 CN CN7 CN0 CN9 CN CN CN8 CN7 ORA NGE ORAN GE XT -WAY VALVE HEAT_ HEAT_ SV TP T T TB XT COMP RESS OR DISCHA RGE TEMP ERA TURE SENS OR OUTDOOR COIL TEMPERATU RE SENSOR OUTDOOR TEMPERAT URE SENSOR INDOOR COIL TEMPER ATUR E SEN SOR TERMINAL STRIP CN CON DC MOT OR DR IVER B OARD FM FM FAN FAN Figure 0. MPB08SM-*P Unit Wiring Diagram

23 INDOOR COIL OUTLET TEMP SENSOR OUTDOOR TEMP SENSOR OUTDOOR TEMP SENSOR D R IV E R B O A R D COMPRESSOR DISCHARGE TEMP SENSOR E X V E X V GN D P- INDUCTOR R07 SV WAY VALVE HE AT _ CR AN KC AS E HE AT ER HE AT _ PAN HE AT ER INDUCTOR R009A Figure. MLA08SM-*P Unit Wiring Diagram HE AT _ HE AT _ IN D O O R C O IL O U TL ET T E M P. S E N S O R GN D P- HEAT_ HEAT_ CRANKCASE HEATER COMPRESSOR DISCHARGE TEMP. SENSOR OUTDOOR COIL TEMP. SENSOR OUTDOOR TEMP. SENSOR INDOOR COIL OUTLET TEMP. SENSOR Figure. MLA00SM-*P Unit Wiring Diagram

24 AC CURRENT DETECTOR HE AT _ HE AT _ PAN HEATER COMPRESSOR DISCHARGE TEMP. SENSOR HE AT _ HE AT _ OUTDOOR COIL TEMP. SENSOR OUTDOOR TEMP. SENSOR INDOOR COIL OUTLET TEMP. SENSOR IND OO R C OIL OU TL ET TE MP. S EN SO R Figure. MLA0SM-*P Unit Wiring Diagram Unit Start-Up IMPORTANT Units should be energized hours before unit start-up to prevent compressor damage as a result of slugging.. Inspect all factory-installed and field-installed wiring for loose connections.. Verify that the manifold gauge set is connected.. Add additional refrigerant charge if required before opening valves and while system is still under a vacuum.. Open the liquid and gas line master valves and each individual port s service valve to release the refrigerant charge contained in outdoor unit into the system.. Replace the stem caps and tighten to the value listed in Table. Torque Requirements on page.. Check voltage supply at the outdoor unit terminal strip. The voltage must be within the range listed on the unit s 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 the provided remote control. 8. Visually check for binding of both indoor and outdoor fans. Refrigerant Charge The outdoor unit is factory-charged with refrigerant. Calculate the additional refrigerant required according to the length of the liquid pipe (one way) between the outdoor unit and indoor unit connections. Be sure to add the proper amount of additional refrigerant. Failure to do so may result in reduced performance. Table. Refrigerant Charge System Pre-charge Pipe Length Amount of Refrigerant to add Two-port 0 ft. ( m) 0. oz ((L ft + L ft) - 0 ft) 0.00 kg ((L m + L m) - m) Threeport 7 ft. ( m) Four-port 00 ft. (0 m) Five-port ft. (8 m) 0. oz ((L ft + L ft + L ft) - 7 ft) 0.00 kg ((L m + L m + L m) - m) 0. oz ((L ft + L ft + L ft + L ft) - 00 ft) 0.00 kg ((L m + L m + L m + L m) - 0 m) 0. oz ((L ft + L ft + L ft + L ft + L ft) - ft) 0.00 kg ((L m + L m + L m + L m + L m) - 8 m)