190. Test run
191. Additional refrigerant charge
192. First, turn the air conditioner on
193. If the actual piping length exceeds the charging length, it will require an additional refrigerant charge
194. this should be done when conducting a test run
195. the require amount additional charge can be obtain by subtracting but charges length from the actual piping length and multiply every needs to a different by 20 g
196. For example if the actual piping length is 19 m. and charges length 10 m. the different is 19m. -10m. Which are 9m. By multiply this 9m. By 20 g the additional charge amount is calculated that 180 g
197. The charges length differs depending on the model
198. So, refer to the installation manual or engineering data for confirmation
199. Once the charges amount has been obtain
200. Have the refrigerant and the scale ready
201. Connect the yellow charging host from the gauge manifold to the refrigerant cylinder
202. Connect the red charging host from the gauge manifold to the vacuum pump