Assessments - 3, GPA: 4.7
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by charging the system with additional refrigerant. However, cooling and heating capacity will be reduced. • Additional charge volume = (piping length - 23 ft.) x 0.2 oz. Piping length (feet) 33 55 Notes Cooling capacity 18,500 to 36,000 Btuh Add charge Not needed Needed (2) Installation not recommended Unit Piping Diameter Recommended height difference is 23 ft or less *Evacuate refrigerant lines (2) An installation with a piping length of 33 ft. or less is desirable. If this is not possible, the maximum piping length can be extended to 55 ft. by charging the system with additional refrigerant. However, cooling and heating capacity will be reduced. • Additional charge volume = (piping length - 33 ft.) x 0.2 oz. MOUNTING INSTALLATION PLATE: The fan coil can be installed using any of the four methods described below. Determine which is the most suitable method. Position the installation plate on the wall making sure that it is parallel to the ground. This can be done by aligning the marking- off line with a thread and weight as shown in figure on the right. This is to ensure that the condensate water does not overflow from the drain pan. Mount the installation plate with the 4 screws provided. (If the unit is to be mounted on a concrete wall, consider using anchor bolts instead of the screws provided. INSTALLATION OF FAN COIL: The extended liquid and suction pipes and drain hose are hidden inside a slot at the back of the fan coil. This allows the hole on the wall to be either on the right or left side of the fan coil. RIGHT SIDE HOLE POSITION: The piping and drain hose are routed straight through the hole. LEFT SIDE HOLE POSITION: The piping and drain hose run from the right side to the left side of the unit, hidden in the slot at the back of the unit before routing through the hole on the left side of the unit. MOUNTING FAN COIL UNIT: Hook the fan coil onto the upper portion of the installation plate ensuring that it sits securely on the installation plate. Press the lower portion of the unit against the installation plate until the hooks at the back of the unit are securely engaged with the installation plate. MOUNTING CONDENSING UNIT: Do not place the condensing unit directly on the ground. It should preferably be placed on a slightly raised platform to prevent rain water from splashing into it. Also ensure that it is level. Avoid installing the unit in places where flammable gases may be present. If necessary, due to the placement conditions, rubber cushions can be placed underneath the outdoor unit. beams or blocks Approx. 1 mm Approx. 1 mm REFRIGERATION PIPING & DRAINAGE PREPARATION OF PIPING Fan coil and side discharge condensing units are equipped with flare connections. Improper flaring and brazing may cause refrigerant to leak out of the system. Follow these instructions carefully in preparing the refrigerant piping. . Ensure that all piping is of the correct size. . Measure the distance between the indoor and outdoor units' refrigerant connections, together with all the curves necessary. Add a few inches as slack. . Lay the piping as straight as possible on a flat surface and with a pipe cutter, cut the piping according to the measured length.; Do not tighten the cutter excessively during cutting as this may cause the pipe to deform. Do not use hacksaw or similar tools to cut the pipe, as it results in metal shavings getting inside the pipe. This also makes proper flaring impossible. . Use a reamer to remove burrs from cut edges. Hold the pipe ends upside down to prevent Note: As the pipe is round, cutting should be performed on a straight section. Also, do not apply too much force with the blade of the pipe cutter. . For connection to flare settings, the pipe has to be flared. Remove the flare nut from the unit and insert it onto the piping. . Fit the pipe into the bar of the flare tool, about 0.5 mm higher than the surface of the bar. . Center the flare punch carefully on the pipe and turn gradually to widen the pipe. Check the finish of the flare to ensure even flaring. . Cover the flared ends with tape to prevent dust from entering. Handle Flaring tool Flaring bar Length of periphery portion L should be constant Flare nut 0.635 (1/4”) only 0.952 (3/8”) and larger 0.5 mm metal powder from get...
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