Panasonic WU-216MF2U9 - Technical Data Manual - Page 27

1. Model Selection and Capacity Calculator Design of 3WAY VRF SYSTEM 1-8. Installation Standards Relationship between A/C units and refrigerant tubing Outdoor unit 4-tube layout Suction tube Discharge tube Liquid tube Balance tube Outdoor unit 3-tube layout Suction tube Discharge tube Liquid tube Solenoid valve kit 2-tube layout Gas tube Liquid tube Outdoor unit Install the solenoid valve kit 164 ft. (50m) or less from the indoor unit. In quiet locations such as hospitals, libraries, and hotel rooms, the refrigerant noise may be somewhat noticeable. It is recommended that the solenoid valve kit be installed inside the corridor ceiling, at a location outside the room. The solenoid valve kit must be located not less than 8.2 ft. (2.5m) above the floor or that cannot be touched. Strongly recommended installation Avoid 1 Room Indoor unit Room Indoor unit Room Indoor unit Room Indoor unit Hallway Common solenoid valve kit Solenoid valve kit Hallway 2 Solenoid valve kit 3 Multiple indoor units under group control can utilize a solenoid valve kit in common. Categories of connected indoor unit capacities are determined by the solenoid valve kit. Type of solenoid valve kit Capacity of indoor unit 160 Type 24 - 54 4 56 Type 18 or under If the capacity range is exceeded, use 2 solenoid valves connected in parallel. WARNING Always check the gas density limit for the room in which the unit is installed. 5 1-9. Check of Limit Density When installing an air conditioner in a room, it is necessary to ensure that even if the refrigerant gas accidentally leaks out, its density does not exceed the limit level for that room. 6 7 8 2 - 11 9