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507861-01

Issue 2120

These instructions are intended as a general guide only, 

for use by qualified personnel and do not supersede any 

national or local codes in any way. Compliance with all local, 

state, provincial, or national codes pertaining to this type of 

equipment should be determined prior to installation.

Units that comply with the maximum cabinet leakage 2% of 

rated airflow requirements of ANSI/ASHRAE 193 (complies 

with IECC 2015) are identified on the rating plate.

Installation and servicing of air conditioning equipment 

can be hazardous due to internal refrigerant pressure 

and live electrical components. Only trained and 

qualified  service  personnel  should  install  or  service 

this equipment. Installation and service performed by 

unqualified  persons  can  result  in  property  damage, 

personal injury, or death.

 WARNING

For your safety, do not store or use gasoline or other 

flammable vapors and liquids in the vicinity of this or any 

other appliance. Such actions could result in property 

damage, personal injury, or death.

 WARNING

The unit must be installed with approved wall sleeve 

and grille accessories for safe operation. Improper 

installations could result in property damage, personal 

injury, or death.

 WARNING

Inspection

Upon receipt of equipment, carefully inspect it for possible 

shipping damage. If damage is found, it should be noted 

on the carrier’s freight bill. Take special care to examine 

the unit inside the carton if the carton is damaged. File a 

claim with the transportation company. 

If any damages 

are discovered and reported to the carrier do not 

install the unit, as claim may be denied.

Check the unit rating plate to confirm specifications 

are as ordered.

Limitations

The unit should be installed in accordance with all national 

and local safety codes.

Limitations of the unit and appropriate accessories must 

also be observed.

The outdoor fan is designed to operate against no more 

than .10” w.c. static pressure.

Minimum and maximum operation conditions must be 

observed to assure maximum system performance 

with minimum service required. Refer to Table 1 for the 

application limitations of the unit.

Table 1. Application Limitations

Outdoor Ambient Air Temperature °F

Minimum DB

Maximum DB

Cool 

Cool 

Heat

65

115

75

Indoor Ambient Air Temperature °F

Minimum 

Maximum

DB/WB

DB

DB/WB

DB

Cool

Heat 

Cool

Heat

62/57

50

90/72

80

DB = Dry Bulb
WB = Wet Bulb

Location

The unit must be installed with approved wall sleeve 

and grille accessories for safe operation. Improper 

installations could result in property damage, personal 

injury, or death.

 WARNING

For information on wall sleeves and grille accessories, see 

the 

Accessories

 section. 

The  design  is  certified  for  thru-the-wall  or  up-to-the  wall 

(inside wall) installation only. The interior portions of 

the unit may be surrounded by a closet with clearances 

to combustible material held to 0” at the sides, top, and 

front of the plenum. All servicing and cleaning of the unit 

can be performed from the front. If installed in a closet 

or utility room, provide 25” clearance in front for service 

if the door to the room is not in line with the front of the 

unit (see Figure 1). 

Accessibility clearances must take 

precedence over fire protection clearances.

Summary of Contents for All-In-One MHP4 Series

Page 1: ...e consulted before installation is made Such applicable regulations or requirements take precedence over the general instructions in this manual CAUTION P 507861 01 P507861 01 Installation These units are not approved for mobile home applications Such use could result in property damage personal injury or death WARNING General These instructions explain the recommended method of installation of th...

Page 2: ...n company If any damages are discovered and reported to the carrier do not install the unit as claim may be denied Check the unit rating plate to confirm specifications are as ordered Limitations The unit should be installed in accordance with all national and local safety codes Limitations of the unit and appropriate accessories must also be observed The outdoor fan is designed to operate against...

Page 3: ...f unit is required for service If the unit is enclosed a door or access panel aligned with the front of the unit is the preferred method of providing access The door or access panel opening must be a minimum of 30 wide centered on the unit and be as tall as the unit If a return duct is not installed in order to provide adequate return air the minimum clearance required between the front of the uni...

Page 4: ...rille Installation Refer to installation instructions included with the wall sleeve kit and the louver grille kit along with Figure 2 for guidance in assembling and installing the wall sleeve and louver grille The sleeve is not intended as the sole support for the unit An additional support must be provided for adequate support see Figure 2 CAUTION Installing and Securing Unit to Wall Sleeve 1 Mak...

Page 5: ...ion to top and bottom corners of unit to sleeve seal Caulk if needed Ductwork Ductwork should be designed and sized according to the methods in Manual Q of the Air Conditioning Contractors of America ACCA Check unit air supply outlet for debris before making ductwork connections It is recommended that supply and return duct connections at the unit be made with flexible joints If flexible ducts are...

Page 6: ...kW TAP 4 AUX HEAT 615 93 590 97 555 101 N A N A N A N A TAP 5 AUX HEAT 715 127 685 134 655 140 630 146 600 151 5 kW TAP 4 AUX HEAT 665 110 635 114 605 118 N A N A N A N A TAP 5 AUX HEAT 750 148 725 154 700 160 675 166 650 171 7 kW TAP 4 AUX HEAT 725 137 705 144 675 150 N A N A N A N A TAP 5 AUX HEAT 825 194 800 200 780 205 755 209 725 213 10 kW TAP 4 AUX HEAT 750 148 725 154 700 161 N A N A N A N ...

Page 7: ...peed for Cooling operation Blower speed must be field adjusted to Speed Tap 3 for higher duct static applications As shipped speed for Heating operation Blower speed must be field adjusted to Speed Tap 5 for higher duct static applications Table 3 Blower Performance 208V or 230V Air Filter All indoor return air must be filtered A washable filter is furnishedwiththeunit locatedinthereturnaircompart...

Page 8: ...e wall sleeve and louver assembly to the outside of the building Use thread sealant on the threaded fittings Install threaded fittings by hand only Do not over torque the fittings Do not thread metal condensate fittings to unit drain pans CAUTION Outdoor Ventilation Air Units are fitted with a panel that seals the return air compartment at the outdoor air duct If introduction of outdoor air is des...

Page 9: ...r inlets to flue gas terminals Improper installation could result in personal injury or death WARNING Figure 7 Auxiliary and Factory Panel for Outdoor Air Duct Factory panel Outdoor Air Duct Auxillary panel with knockouts 1 2 3 4 5 6 7 8 9 Thermostat The room thermostat should be located on an inside wall where it will not be subject to drafts sun exposure or heat from electrical fixtures or appli...

Page 10: ...fort during defrost The unit will remain in defrost until the defrost sensor has determined that the frost has been removed from the coil or a 14 minute time period has elapsed The defrost control is also equipped with a set of pins to aid in the troubleshooting of the defrost system see Figure 9 The following is a brief outline of the testing of the defrost system 1 Defrost sensor must be closed ...

Page 11: ...m cleaner Wash filter in soap or detergent water and replace after filter is dry It is not necessary to oil the filter after washing Motors The indoor and outdoor fan motors are permanently lubricated and require no maintenance Outdoor Coil Foreign material should not be allowed to accumulate on the outdoor coil surface or other parts in the air circuit Cleaning should be as often as necessary to ...

Page 12: ...m Color 29 Height ALVRAL 1P Extruded Aluminum Louver Kit 33 Height ALVRAL 2 Extruded Aluminum Louver Kit Custom Color 33 Height ALVRAL 2P Extruded Aluminum Louver Kit 33 Height ALVRAL 7 Extruded Aluminum Louver Kit Custom Color 33 Height ALVRAL 7P Extruded Aluminum Louver Kit 45 Height ALVRAL 3 Extruded Aluminum Louver Kit Custom Color 45 Height ALVRAL 3P Extruded Aluminum Louver Kit 45 Height ALV...

Page 13: ... Louver ASLEEVE8 2 8 32 3 4 16 16 5 8 32 7 8 for 45 Louver ASLEEVE8 5 8 45 16 16 5 8 45 1 8 10 Wall Sleeve Kit for 29 Louver ASLEEVE10 1 10 29 16 16 5 8 29 1 8 for 33 Louver ASLEEVE10 2 10 32 3 4 16 16 5 8 32 7 8 for 45 Louver ASLEEVE10 5 10 45 16 16 5 8 45 1 8 12 Wall Sleeve Kit for 29 Louver ASLEEVE12 1 12 29 16 16 5 8 29 1 8 for 33 Louver ASLEEVE12 2 12 32 3 4 16 16 5 8 32 7 8 for 45 Louver ASL...

Page 14: ...Page 14 of 15 507861 01 Issue 2120 Wiring Diagrams Figure 11 Connection Diagram MHP With Single Circuit and Hard Start Enabled ...

Page 15: ...507861 01 Issue 2120 Page 15 of 15 Figure 12 Connection Diagram MHP With Dual Circuit and Hard Start Enabled ...

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