Carrier 38GJ Owner's Manual & Installation Instructions

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OUTDOOR UNIT INSTALLATION INSTALLERSYSTEM VACUUM INSTALLER6Do not install the outdoor unit in pits or air vents.Installing the pipesUse suitable connecting pipes and equipment forthe refrigerant R410A.Wrap all the refrigerant pipes and joints.Tighten the connections using two wrenches wor-king in opposite directions.Vacuum pumpHumid air left inside the refrigerant circuit can cause com-pressor malfunction. After connecting the indoorand outdoor units, bleed the air and humidity from therefrigerant circuit using a vacuum pump.(1) Unscrew and remove the caps from the 2-way and 3-way valves.(2) Unscrew and remove the cap from the service valve.(3) Connect the vacuum pump hose to the service valve.(4) Operate the vacuum pump for 10-15 minutes until anabsolute vacuum of 27.85lb/ft(10 mm Hg) hasbeen reached.(5) With the vacuum pump still in operation, close thelow-pressure knob on the vacuum pump coupling.Stop the vacuum pump.(6) Open the 2-way valve by 1/4 turn and then close itafter 10 seconds. Check all the joints for leaks usingliquid soap or an electronic leak device.(7) Turn the body of the 2-way and 3-way valves. Discon-nect the vacuum pump hose.(8) Replace and tighten all the caps on the valves.Vacuum pump Vacuum pumpLocationTwisting moment (ft.lb/N.m)47.46-54.24(35-40)81.36-88.14(60-65)61.02-67.8(45-50)94.92-101.7(70-75)Diameter (in/mm)20.34-27.12(15-20)The 18K unit needs to be installed with the indoor unit.Caution: Installation must be performed in accordancewith the NEC/CEC by authorized personnel only.conversion joint18K MODE:INDOORUNITConnect to theindoor unitRefrigerant fluid di rection of fiow3-w ay valve2-w ay valveinlet(2)Turn(8) Secure(7)Turn to open fully(2)Turn(8) Secure(6) Open by 1/4 turn(7)Turn to open fully(2)Turn(8) SecureValve capValve capServiceThe refrigerant pipes must not exceed the maximumheights 16.4ft (5m)(18K)or 32.8ft(10m)(24K&28K).Use bolts to secure the unit to a flat, solid floor.When mounting the unit on a wall or the roof, ensuresure the support is firmly secured so that it cannotmove in the event of intense vibrations or a strongwind.Install the drain fitting and the drain hose(for model with heat pump only)Condensation is produced and flows from the out-door unit when the appliance is operating in theheating mode. In order not to disturb neighboursand to respect the environment,install a drain fittingand a drain hose to channel the condensate water.Install the drain fitting and rubber washer on theoutdoor unit chassis and connect a drain hose to itas shown in the figure.Models( ft/m) 18Kx2 28Kx4Max. connection pipe length 229.7( 70)Max. connection pipe length(Simple one indoor unit) 32.8(10) 32.8(10)24Kx265.6( 20)65.6( 20) 196.9( 60)65.6( 20) 65.6( 20)( )( )( )( )( )1/25/83/81/43/424Kx36