Z1 hom expansion coupling lub tes tsho expansion thiab expansion tes tsho 1, compact thiab hnav, haum rau me me installation lub sij hawm2, yuav hloov tau ntau yam tseem ceeb los yog cuam tshuam haum qhov tseem ceeb kev twb kev txuas siv 3, nyob rau hauv thiaj li yuav hloov loj loads yuav siv tau ntau yam reconciliation tes tsho, ib sab compression. tsis tuaj yeem tshaj 4 khub ntawm lub nplhaib.