Frigidaire FFHP093CS2 Installation Instructions - Page 21

Purging the system with a vacuum pump 1. Check that each tube (both liquid and gas side tubes) between the indoor and outdoor units have been properly connected and all wiring for the test run has been completed. Remove the service valve caps from both the gas and the liquid side on the outdoor unit. Note that both the liquid and the gas side service valves on the outdoor unit are kept closed at this stage. 2. When relocating the unit to another place, perform evacuation using vacuum pump. 3. Oil trap should be installed every 16'-25' (no oil trap needed when outdoor unit installed at a lower place than indoor unit). 4. Pipe length and refrigerant amount for single split type air conditioner. (see tabel 2.2) Outdoor unit (A) (B) Outdoor unit (A) Oil trap (B) Indoor unit Piping length under 16' Indoor unit Piping length 16' or more Table 2.2 Cooling capacity (BTU/h) System 9000 Heat Pump 12000 Heat Pump 18000 Cooling Only 18000 Heat Pump Connective pipe Max height length (A) difference (B) Air purging 25'~49' 16' Use vacuum pump. 25'~66' 33' Use vacuum pump. 25'~82' 33' Use vacuum pump. 25'~82' 33' Use vacuum pump. 22000 22000 28000 33600 Cooling Only Heat Pump Heat Pump Heat Pump 25'~82' 25'~82' 25'~98' 25'~98' 33' Use vacuum pump. 33' Use vacuum pump. 66' Use vacuum pump. 66' Use vacuum pump. Additional amount of refrigerant to be charged R410a: 0.22ozs/ft (Pipe length-25') R410a: 0.22ozs/ft (Pipe length-25') R410a: 0.16ozs/ft (Pipe length-25') R410a: 0.22ozs/ft (Pipe length-25') R410a: 0.16ozs/ft (Pipe length-25') R410a: 0.54ozs/ft (Pipe length-25') R410a: 0.54ozs/ft (Pipe length-25') R410a: 0.54ozs/ft (Pipe length-25') Purging the system 20