Magic-pac MHP4 Series Installation And Maintenance Instructions Manual

Summary of MHP4 Series

  • Page 1

    506325-01 page 1 of 18 issue 0941 save these instructions for future reference improper installation, adjustment, alteration, service, or maintenance can cause injury or property damage. Refer to this manual. For assistance or additional information, consult a qualified installer or service agency. ...

  • Page 2

    Page 2 of 18 506325-01 issue 0941 installation general these instructions explain the recommended method of installation of the mhp4 heat pump unit and associated electrical wiring. This unit is designed and approved for use as a self- contained air to air heat pump system. These instructions, and a...

  • Page 3

    506325-01 page 3 of 18 issue 0941 side view minimum clearances plenum exterior wall wall sleeve (one each side) interior wall clearances* mounting strap (one each side) 3/4" plywood riser floor platform (field supplied) - must be level with sill plate of hole in exterior wall front of unit sill plat...

  • Page 4

    Page 4 of 18 506325-01 issue 0941 installing and securing unit to wall sleeve 1. Make sure the gaskets attached to the sleeve are not damaged. 2. Verify divider panel is positioned properly. Figure 3 shows the correct position for 48" and 56" tall units (flange wall sleeve and louver grille installa...

  • Page 5

    506325-01 page 5 of 18 issue 0941 inspect the fit up of the unit to the wall sleeve. Verify that the gaskets of the wall sleeve make a complete seal to the unit paying particular attention to top and bottom corners of unit to sleeve seal. Caulk if needed. Ductwork ductwork should be designed and siz...

  • Page 6

    Page 6 of 18 506325-01 issue 0941 condensate drain provisions must be made to properly drain the indoor and outdoor drain pans of this appliance. Indoor drain connection: 1/2" npt to 3/4" pvc fitting (schedule 40). Outdoor drain connection: 3/4" npt to 3/4" pvc fitting (schedule 40). Both drains mus...

  • Page 7

    506325-01 page 7 of 18 issue 0941 electrical connections all wiring must be done in accordance with the national electrical code (nec), ansi/nfpa no. 70 (latest edition); canadian electrical code csa c22.2 part 1 (latest edition); or local codes, where they prevail. Any alteration of internal wiring...

  • Page 8

    Page 8 of 18 506325-01 issue 0941 operation sequence of operation upon initial “power up” to unit, there is a 3-minute time delay to the compressor contactor (r to y). Any 24v interrupt (r, c) to the defrost control will initiate the 3-minute delay to the contactor. Cooling when the thermostat is in...

  • Page 9

    506325-01 page 9 of 18 issue 0941 the following is a brief outline of the testing of the defrost system. 1. Defrost sensor must be closed, 32°f or below. If temperatures are such that the switch will not close, jumper between defrost sensor terminals on the defrost control. 2. Start system in heatin...

  • Page 10

    Page 10 of 18 506325-01 issue 0941 maintenance periodic inspection and maintenance normally consists of changing or cleaning filters and (under some conditions) cleaning the coils. Filter inspect the filter once a month. Replace disposable filter or clean the washable filter as necessary (a minimum ...

  • Page 11

    506325-01 page 11 of 18 issue 0941 accessories 2 thru-the-wall installations only 2 kit no. Description used with polypropylene louver kit (white) mhp4-09-12, 18, 24, & 30/mhp4-10-18 & 24 lvrpwht-1 alvrpwht-2 polypropylene louver kit (white) mhp4-10-30/mhp4-09-36 alvrpsan-1 polypropylene louver kit ...

  • Page 12

    Page 12 of 18 506325-01 issue 0941 wall sleeve dimensions (in.) * thru-the-wall installations only 1 - 6 e v e e l s a 6 9 2 8 / 1 - 9 2 8 / 1 - 9 2 2 - 6 e v e e l s a 6 4 / 3 - 2 3 8 / 7 - 2 3 8 / 1 - 9 2 3 - 6 e v e e l s a 6 5 4 8 / 1 - 5 4 8 / 1 - 9 2 4 - 6 e v e e l s a 1 - 8 e v e e l s a 8 9...

  • Page 13

    506325-01 page 13 of 18 issue 0941 note: bottom surface of wall opening must be at least 4" off the floor. 29 16 range of wall thickness 16 b 1 a c d required wall opening 1 2 / 5 8 / the unit must be installed with approved wall sleeve and grille accessories for safe operation. Improper installatio...

  • Page 14

    Page 14 of 18 506325-01 issue 0941 figure 12 connection diagram #537246-01.

  • Page 15

    506325-01 page 15 of 18 issue 0941 figure 13 schematic diagram #537246-01.

  • Page 16

    Page 16 of 18 506325-01 issue 0941 figure 14 connection diagram part #46358-005.

  • Page 17

    506325-01 page 17 of 18 issue 0941 figure 15 schematic part #46358-005.

  • Page 18

    Page 18 of 18 506325-01 issue 0941 notes.