Sanyo 26KHS72R Installation Instructions - Page 55
Indoor Fan Performance
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07-115 SSHP_II 5/7/07 4:00 PM Page 55 3-26. Increasing the Fan Speed If external static pressure is too great (due to long extension of ducts, for example), the air flow volume may drop too low at each air outlet. This problem may be solved by increasing the fan speed using the following procedure: (1) Remove 4 screws on the electrical component box and remove the cover plate. Fan motor Electrical component box Booster cable Booster cable Fan motor socket (At shipment) (Booster cable installed) Fig. 3-104 (2) Disconnect the fan motor sockets in the box. (3) Take out the booster cable (sockets at both ends) clamped in the box. (4) Securely connect the booster cable sockets between the disconnected fan motor sockets in step 2 as shown in the Fig. 3-104. U (5) Place the cable neatly in the box and reinstall the cover plate. I How to read the diagram The vertical axis is the external static pressure (Pa) while the horizontal axis represents the air flow (CFM). The characteristic curves for "HT", "H", "M" and "L" fan speed control are shown. The nameplate values are shown based on the "H" air flow. For the 26 type, the air flow is 636 CFM, while the external static pressure is 49 Pa at "H" position. If external static pressure is too great (due to long extension of duct, for example), the air flow volume may drop too low at each air outlet. This problem may be solved by increasing the fan speed as explained above. External Static Pressure Indoor Fan Performance 26 Type 36 Type 200 0.8 (inAq) Limit line External Static Pressure (Pa) (inAq) 150 150 0.6 Limit line (Pa) 0.5 0.5 Limit line Limit line 100 0.4 100 0.4 0.3 HT 50 0.2 HH H 0.1 L 0 0 300 500 700 900 Air Flow (CFM) 50 0 500 0.3 HT 0.2 HH H 0.1 L 0 1000 Air Flow (CFM) NOTE HT : Using the booster cable H : At shipment Fig. 3-105 55