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2.1.4 Connection Sizes, Air Cooled Units
Model Number Hot Gas Line Liquid Line Suction Line
GTA*007 1/2” O.D. 1/2” O.D. 3/4” O.D.
GTA*011 1/2” O.D. 1/2” O.D. 3/4” O.D.
GTA*014 1/2” O.D. 1/2” O.D. 3/4” O.D.
GTA*018 1/2” O.D. 1/2” O.D. 3/4” O.D.
GTA*028 N/A 5/8” O.D. 1 3/8” O.D.
GTA*035 N/A 5/8” O.D. 1 3/8” O.D.
GTA*046 N/A 7/8” O.D. 1 3/8” O.D.
*D=DownowU=Upow
Note: Units will have a liquid line and either a hot gas or suction line.
Field connections at the indoor evaporator and remote condenser or condensing unit will
notnecessarilybethesameastheeldpipesizerequired.Insomecasesthesewillvary
signicantly.
2.1.5 Field Piping, Remote Condenser/Condensing Unit Above Evaporator