Carrier 40GXQ Product Data

Also see for 38GXQ: Installation instructions Owner's manual Owner's manual Product data Service manual

Contents

9UNIT MOUNTING (INDOOR)Mounting template – The fan coil units are furnished withmounting bracket to hang the unit and mark the location of thewiring, and refrigeration line hole locations.Support – Adequate support must be provided to handle theweight of all fan coils. Refer to the Physical Data section forweights, and the base unit dimensional drawings for the location ofmounting bracket.Unit Leveling – For reliable operation, units should be level in allplanes.Clearances – Minimum clearance as shown in Fig. 4.Unit location – Select a location which will provide the best aircirculation for the room. These units should be positioned as highas possible on the wall for the best air circulation. The unit returnand discharge should not be obstructed by furniture, curtains, oranything which may cause the unit to short cycle or air to recycle.Place the unit in the middle of the selected wall (if possible). Usean outside wall, if available, to make piping easier, and place theunit so it faces the normal location of room occupants.UNIT MOUNTING (OUTDOOR)Support – A location which can bear the weight of outdoor unit.Refer to the Physical Data section for weights, and basedimensional drawings.Unit Leveling – For reliable operation, units should be level in allplanes.Clearances – Minimum clearances, as shown in Fig. 5, must beprovided for airflow. The outdoor units are designed for free--blowapplications. Air inlets and outlets should not be restricted.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. Do not install the outdoor or indoorunits in a location with special environmental conditions.SYSTEM OPERATING CONDITIONSCooling operating range:Maximum MinimumDB_F (_C)WB_F (_C)DB_F (_C)WB_F (_C)Outdoor Unit 115(46.1) --- 55(12.78) ---Indoor Unit 95(35) --- 55(12.78) ---Heating operating range:Maximum MinimumDB_F (_C)WB_F (_C)DB_F (_C)WB_F (_C)Outdoor Unit 75(23.9) --- 14( ---10) ---Indoor Unit 80(26.7) --- 55(12.78) ---METERING DEVICESThese units have capillary tube metering devices in the outdoorunit.REFRIGERANT LINESRouting – Refrigerant lines can be routed in any of the fourdirections shown in Fig. 10.1 Right Exit2 Right Rear Exit3 Left Exit4 Left Rear Exi( a ) ( b )As viewed from frontFig. 10 – Refrigerant Line RoutingA08281General Guidelines:1. The 38GXQ units are shipped with full charge of R--410Arefrigerant. All charges, line sizing, and capacities are basedon runs of 25ft (7.6 m). For runs over 25ft (7.6 m), consultlong line section for charge adjustments.2. Refrigerant lines should not be buried in the ground. If it isnecessary to bury the lines, not more than 36 inches (914mm) should be buried. Provide a minimum of 6 inch (152mm) vertical rise to service valves to prevent refrigerantmigration.3. Both lines must be insulated. Use a minimum of 1/2 inch(12.7 mm) thick insulation. Closed--cell insulation isrecommended in all long--line applications.4. Special consideration should be given to isolatinginterconnecting tubing from the building structure. Isolatethe tubing so that vibration or noise is not transmitted intothe structure.Long Line Applications:1. A field fabricated wind baffle is recommended.2. No change in line sizing is required.3. Add refrigerant per table below.ADDITIONAL CHARGE TABLEUnit SizeAdditional Charge, oz./ftft (m)10 --- 25(3.05 --- 7.62)>25 --- 65(7.62--- 19.81)9K hp None 0.4812K hp4. Reduction in capacity due to long lines can be calculatedfrom the chart below.CAPACITY LOSSCapacity, % LossLine Length, ft (m)Cooling: 25(7.62)45(13.7)65(19.8)9 & 12 KBTU/H models 0% 2% 5%Heating:9 & 12 KBTU/H models 0% 7% 11%38/40GXQ