71 Combination table for boosted capacity indoor systems Infrastructure cooling combination table NEW FTXM-A FAA-B FHA-A(9) FBA-A(9) FDXM-F9 FUA-A FNA-A9 FVA-A FFA-A9 FCAHG-H FCAG-B capacity class 35 50 60 71 71 100 35 50 60 71 100 125 140 35 50 60 71 100 125 140 35 50 60 71 100 125 35 50 60 71 100 125 140 35 50 60 71 100 125 140 35 50 60 71 100 125 140 RZAG35B P P P P P P P RZAG50B P P P P P P P RZAG60AB P P P P RZAG71NV1 RZAG71NY1 P 3 2 P 3 2 P 3 2 P 3 2 P 3 2 P 3 2 P RZAG100NV1 RZAG100NY1 2 4 3 2 P 4 3 2 P 4 3 2 4 3 P 4 3 2 P 4 3 2 P RZAG125NV1 RZAG125NY1 2 4 3 2 P 4 3 2 P 4 3 2 4 3 P 4 3 2 P 4 3 2 P RZAG140NV1 RZAG140NY1 2 4 3 2 P 4 3 2 P 4 3 2 4 3 P 4 3 2 P 4 3 2 P P = Pair, 2 = Twin, 3 = Triple, 4 = Double twin; For more information on infrastructure cooling options refer to infrastructure cooling catalogue. Infrastructure cooling solution 2-Step solution for system selection High reliability for infrastructure cooling UNIQUE Select your infrastructure cooling system in 2 steps Step 1 Determine requested indoor conditions and required cooling demand (Sensible and Total capacity) Step 2 Select the system combination from the given table, where the system ‘s sensible and total capacity meets the cooling demand at the requested indoor and outdoor temperatures. No humidity generation in room (eg: Server room) IT room requires 22°C inside. It will have 7kW of sensible cooling demand, and no latent cooling demand (no humidity generation) throughout the year. Ceiling suspended indoor unit is the customer's preference for the server room. Indoor temperature = 22°CDB Sensible cooling demand (SHC) = 7 kW Latent cooling demand (LC) = 0 kW* Total cooling demand (TC) = SHC + LC = 7 kW Outdoor temperature operating range = -20°C ~ +40°C Most stringent outdoor unit capacity condition = -20°C Solution Boosted capacity indoor combination with 10kW outdoor system. RZAG100 + FHA140 Total capacity = 7.48 kW Sensible capacity = 7.48 kW Power input = 0.42 x 1.96 = 0.82 kW * If there is no latent cooling demand, look for conditions where TC = SHC, since no more dehumidification will occur and thus the indoor environment will stabilize. When TC > SHC and there is no humidity generation, the indoor humidity will gradually decrease. Some humidity source in room (eg: Laboratory) Lab requires 22°C inside. It will have 9 kW of sensible cooling demand, and some humidity generation in the room (est. indoor humidity level 42%). Wall mounted indoor unit is the customer’s preference for the laboratory. Indoor temperature = 22°CDB Indoor Relative Humidity (RH%) = 42%** Sensible cooling demand (SHC) = 9 kW Latent cooling demand (LC) = 0.9 kW Total cooling demand (TC) = SHC + LC = 9.9 kW Outdoor temperature operating range = -20°C ~ +40°C Most stringent outdoor unit capacity condition = -20°C Solution Boosted capacity indoor combination with 12.5kW outdoor system. RZAG125 + FAA71x2 Total capacity = 10.39 kW Sensible capacity = 9.34 kW Power input = 0.46 x 2.65 = 1.22 kW ** System capacity at 42%RH (14.2°CWB) can be found by interpolation between 13°CWB (35%) and 15°CWB (48%).
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