Carrier 40MVC Product Data

Also see for 38MVC: Owner's manual Service manual Installation instructions Installation instructions

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Carrier 40MVC Product Data Manual pdf 20 page image

20APPLICATION DATAUNIT SELECTIONSelect equipment to either match or be slightly less than anticipatedpeak load. This provides better humidity control, fewer unit cycles,and less part--load operation.For units used in spaces with high sensible loads, base equipmentselection on unit sensible load, not on total anticipated load. Adjustfor anticipated room wet bulb temperature to avoid undersizingequipment.UNIT MOUNTING (INDOOR)Unit leveling -- For reliable operation, units should be level in allplanes.Clearance -- Provide adequate clearance for airflow as shown inFig. 2.Unit location -- Select a location which will provide the best aircirculation for the room.These units should be positioned as high as possible on the wall forbest air circulation. The unit return and discharge should not beobstructed by furniture, curtains, or anything which may cause unitshort cycling or air recirculation. Place the unit in the middle of theselected wall (if possible). Use an outside wall, if available, tomake piping easier, and place the unit so it faces the normallocation of room occupants.UNIT MOUNTING (OUTDOOR)Unit leveling -- For reliable operation, units should be level in allplanes.Clearance -- Minimum clearance, as shown in Fig. 3, must beprovided for airflow. The condensing units are designed forfree--blow application. Air inlets and outlets should not berestricted.Unit location -- A location which is convenient to installation andnot exposed to strong wind. If unit is exposed to strong winds it isrecommended that a wind baffle be used. Contact your Carrierrepresentative for drawings.A location which can bear the weight of outdoor unit and wherethe outdoor unit can be mounted in a level position.Do not install the indoor or outdoor units in a location with specialenvironmental conditions. For those applications, contact yourCarrier representative.MOUNTING TEMPLATEThe fan coil units are furnished with mounting to mark the locationof the wiring, and refrigeration line hole locations.SUPPORTAdequate support must be provided to support the weight of all fancoils. Refer to the Physical Data section for fan coil weights, andthe base unit dimensional drawings for the location of mountingbrackets.SYSTEM OPERATING CONDITIONSCooling operating range:Maximum MinimumDB_F (_C)WB_F (_C)DB_F (_C)WB_F (_C)Outdoor Unit 125(51.67) --- 55(12.78) ---Indoor Unit 85(29.44)72(22.22)64(17.78)52(11.11)Heating operating range:Maximum MinimumDB_F (_C)WB_F (_C)DB_F (_C)WB_F (_C)Outdoor Unit 75(23.89)67(19.44)5( ---15) 50% RHIndoor Unit 80(26.67) --- 55(12.78) ---LOW AMBIENT OPERATIONUnits can operate in cooling down to 55_F (12.78_C) under allconditions without a low--ambient kit.Units equipped with accessory low--ambient kits should also beequipped with field fabricated (drawings available) wind baffle andcrankcase heater to prevent refrigerant migration duringcompressor off cycle.METERING DEVICESThese units have capillary tube metering devices in the outdoorunit.DRAIN CONNECTIONSInstall drains to meet local sanitation codes. If adequate gravitydrainage cannot be provided, unit should be equipped withaccessory condensate pump. High wall fan coil unit condensatepumps have a maximum lift of 10’ (3.05 m) for 9k and 12k unitsand 25’ (7.62 m) for 18k and 24k units.See physical dimension tables for drain sizes.NOTE: High wall fan coil units have internal condensate traps.A trap is not required.Drain connections may be routed through alternate locations onmost fan coils as shown in Fig. 4.Pipe holderPipe coverRight pipingLeft pipingPipe coverRight back pipingLeft back piping1 234Size 012OnlyA07344Fig. 4 – Piping Locations38/40MVC, MVQ