Haier GE NS22HM Installation Instructions Manual

Also see for GE NS22HM: Service manual

508311G01 / 31-5000754Page 9 of 26Issue 2250Refrigerant Piping - Install Indoor Expansion ValveThis outdoor unit is designed for use in systems that include a heat pump expansion valve metering device at the indoorcoil. See the Product Specifications for approved expansion valve kit match-ups and application information. The expansionvalve unit can be installed internal or external to the indoor coil. In applications where an uncased coil is being installedin a field-provided plenum, install the expansion valve in a manner that will provide access for future field service of theexpansion valve. Refer to below illustration for reference during installation of expansion valve unit.1 - Attach the vapor line sensing bulb in the properorientation as illustrated to the right using the clamp andscrews provided.NOTE - Though it is preferred to have the sensing bulbinstalled on a horizontal run of the vapor line, installationon a vertical run of piping is acceptable if necessary.NOTE - Confirm proper thermal contact between vaporline and check/expansion bulb before insulating thesensing bulb once installed.2 - Connect the equalizer line from the check expansionvalve to the equalizer vapor port on the vapor line. Fingertighten the flare nut plus 1/8 turn (7 ft-lbs) as illustratedbelow.TWO PIECEPATCH PLATE(UNCASEDCOIL ONLY)VAPORLINELIQUID LINEORIFICEHOUSINGDISTRIBUTORTUBESLIQUID LINEMALE EQUALIZER LINEFITTING (SEEEQUALIZER LINEINSTALLATION FORFURTHER DETAILS)SENSINGLINEEQUALIZERLINEEXPANSIONVALVETEFLON®RING(Uncased Coil Shown)Sensing bulb insulation is required ifmounted external to the coil casing. sensingbulb installation for bulb positioning.STUBENDTEFLON®RINGLIQUID LINEASSEMBLY WITHBRASS NUTDISTRIBUTORASSEMBLY3 - Install one of the provided Teflon® rings around thestubbed end of the check expansion valve and lightlylubricate the connector threads and expose surface ofthe Teflon® ring with refrigerant oil.4 - Attach the stubbed end of the check expansion valve tothe liquid line orifice housing. Finger tighten and use anappropriately sized wrench to turn an additional 1/2 turnclockwise as illustrated in the figure above, or tighten to20 ft-lb.5 - Place the remaining Teflon® washer around the otherend of the check expansion valve. Lightly lubricateconnector threads and expose surface of the Teflon®ring with refrigerant oil.6 - Attach the liquid line assembly to the check expansionvalve. Finger tighten and use an appropriately sizedwrench to turn an additional 1/2 turn clockwise asillustrated in the figure above or tighten to 20 ft-lb.ON 7/8” AND LARGER LINES,MOUNT SENSING BULB ATEITHER THE 4 OR 8 O'CLOCKPOSITION.12ON LINES SMALLER THAN7/8”, MOUNT SENSINGBULB AT EITHER THE 3 OR9 O'CLOCK POSITION.12BULBVAPOR LINEVAPOR LINENOTE - NEVER MOUNT THE SENSING BULB ONBOTTOM OF LINE.BULBBULBBULBVAPOR LINEFLARE NUTCOPPER FLARESEAL BONNETMALE BRASS EQUALIZERLINE FITTINGFLARE SEAL CAPOR1 234567891011 121/2 TurnSENSING BULB INSTALLATIONEQUALIZER LINE INSTALLATION1 234567891011 121/8 Turn1 - Remove and discard either the flare seal cap or flare nutwith copper flare seal bonnet from the equalizer line porton the vapor line as illustrated in the figure below.2 - Remove the field-providedsembly.INDOOR EXPANSION VALVE INSTALLATION