Connect the flared ends for the corresponding ports to the indoor and out of doors models, initially hand-tightening the nuts. Secure the out of doors device in addition to the concrete pad. Lay a rubber cushion in addition to the pad to attenuate vibration, then established the outside condenser unit https://waylonpomkg.angelinsblog.com/29073556/eco-friendly-commercial-ventilation-fundamentals-explained