Sanyo CMH3172 Service Manual - Page 96

Save this Combination Table! Please be sure to hand over this sheet to the user. 4-Room Outdoor Unit Combination Table CM3172 The combinations of the indoor units listed in Table 1 and Table 2 are combinations solely of those units which can be operated concurrently. In addition to the combinations listed in the table, other combinations of indoor units are possible provided that the following conditions are satisfied. Conditions: 1. At least two or more indoor units must be connected to the multi outdoor unit. It is not acceptable for only one indoor unit to be connected. 2. The total rated cooling capacity of the indoor units to be connected must be no more than 200% of the rated cooling capacity of the outdoor unit. CAUTION In this case, all the indoor units installed must not be operated concurrently under any circumstances. Otherwise, the air conditioner may not run properly and trouble may occur. Example: When 4 indoor units are connected at 230V If the following holds true Rated cooling capacity of CM3172 outdoor unit: C=30600 (BTU/h) Rated cooling capacity of indoor units: K1, K2, ... (BTU/h) Then: C x 2 (200%) K1 + K2 + ....... 30600 x 2 7500 + 7500 + 11900 + 24200 61200 51100 It is therefore possible to connect 4 units with respective capacities of 7500 + 7500 + 11900 + 24200. However, since this combination is not found in the 4-room operation column of Table 1, operating all these units concurrently may result in trouble. At a time like this, shut down at least one of the 4 indoor units to match one of the combinations found in the 3-room operation column of Table 1. at 208V If the following holds true Rated cooling capacity of CM3172 outdoor unit: C=28600 (BTU/h) Rated cooling capacity of indoor units: K1, K2, ... (BTU/h) Then: C x 2 (200%) K1 + K2 + ....... 28600 x 2 7500 + 7500 + 11900 + 24200 57200 51100 It is therefore possible to connect 4 units with respective capacities of 7500 + 7500 + 11900 + 24200. However, since this combination is not found in the 4-room operation column of Table 2, operating all these units concurrently may result in trouble. At a time like this, shut down at least one of the 4 indoor units to match one of the combinations found in the 3-room operation column of Table 2. NOTE Be sure to operate the air conditioning system only when 2 or more indoor units have been installed. If operated with only a single unit installed, the returning fluid to the compressor may cause a malfunction. Pub. OI-85264180820004 © SANYO 2008