Panasonic WU-216MF2U9 - Technical Data Manual - Page 13

2. Features of 3WAY VRF SYSTEM 2-1. Outline of 3WAY VRF SYSTEM System example Outline of 3WAY VRF SYSTEM CONNECTION * The capacity after the setting must not exceed 30-Ton. CONCENTRATION Since all tubings are concentrated into one pipe shaft, you can minimize tubing space and construction labor. Solenoid * 1 valve kit 1 Indoor unit If indoor/outdoor units need servicing, a ball 2 valve (field supply) cuts off non-operational units to let other units stay running. ADDITION If your indoor capacity load 3 System limitations changes in the future, it's easy to add on both indoor and outdoor Max. No. allowable connected outdoor units 3 *2 units using the same tubings. Max. capacity allowable connected outdoor units 360,000 BTU/h *If the additional installment of outdoor and indoor units are expected, (30-Ton, 105.5 kW) the size of refrigerant tubing should be decided according to the total capacity Max. connectable indoor units Max. allowable indoor/outdoor capacity ratio Maximum actual tubing length 52 *3 50~150% after the addition. *1 The connection between the indoor unit(s) and the solenoid valve kit(s) has three (3) types of methods. For further details, see the section 2. 4 656 ft 3-4. "Connecting Multiple Indoor Units to a Single Solenoid Valve Kit". Maximum level difference (when outdoor unit is lower) Maximum total tubing length 164(131) ft 1,640 ft *2 Up to 3 units can be connected if the system has been extended. *3 In the case of 20-Ton (type 240) or smaller units, the number is limited by the total capacity of the connected indoor units. Combination of outdoor units 5 The DC inverter unit can be used independently or in combination. R407C models and R22 models must not be used in combination with each other. 6 Total tonnage 6 8 10 12 14 16 18 20 22 24 26 28 30 Type (Ton) 6 1 1 1 3 2 2 2 1 1 8 1 1 1 10 1 1 1 2 1 3 7 12 1 1 1 Maximum number of connectable indoor units when connected with minimum capacity Total system Number of Total system Number of tonnage indoor units tonnage indoor units 8 6 14 14 33 8 19 16 38 10 24 18 43 12 28 20 48 22~30 52 1 - 5 9