AC Pro GMV-ND07PLS/A-T(U) Installation Manual

Contents

AC Pro GMV-ND07PLS/A-T(U) Installation Manual Manual pdf 32 page image

274.1 Flaring Process4.2 Pipe Bending4.3 Indoor Pipe Connection(1) Use pipe cutter to cut the connection pipe in case it is unshaped.(2) Keep the pipe downward in case cutting scraps get into the pipe. Clear away the burrs aftercutting.(3) Remove the flared nut connecting indoor connection pipe and outdoor unit. Then use flaring toolto fix the flared nut into the pipe (as shown in Fig.4.1).(4) Check if the flared part is flaring evenly and if there is any crack..(1) Reshape the pipe by hand. Be careful not to damage the pipe.(2) Do not bend the pipe over 90°.(3) If pipe is repeatedly bent or stretched, it will get hard and difficult to bend and stretch again.Therefore, do not bend or stretch the bend for over 3 times.(4) In case that direct bending will open cracks to the pipe, first use sharp cutter to cut the insulatinglayer, as shown in Fig. 4.3. Do not bend the pipe until it is exposed. When bending is done, wrap the pipewith insulating layer and then secure it with adhesive tape.(1) Remove pipe cover and pipe plug.(2) Direct the flared part of copper pipe to the center of screwed joint. Twist on the flared nut tightlyby hand, as in Fig. 4.4. (Make sure indoor pipe is correctly connected. Improper location of the center willprevent flared nut from being securely twisted. Thread of nut will get damaged if the flared nut is twistedforcibly.)(3) Use torque wrench to twist on the flared nut tightly until the wrench gives out a click sound. (Holdthe handle of wrench and make it at right angle to the pipe. as in Fig. 4.5Multi Variable Air Conditioners Indoor Unit100(1) Use pipe cutter to cut the connection pipe in case it is unshaped.(2) Keep the pipe downward in case cutting scraps get into the pipe. Clear away the burrs aftercutting.(3) Remove the flared nut connecting indoor connection pipe and outdoor unit. Then use flaring toolto fix the flared nut into the pipe (as shown in Fig.4.1).(4) Check if the flared part is flaring evenly and if there is any crack.Fig. 4.1Multi Variable Air Conditioners Indoor UnitCorrect Wrong4.2 Pipe Bending(1) Reshape the pipe by hand. Be careful not to damage the pipe.(2) Do not bend the pipe over 90°.(3) If pipe is repeatedly bent or stretched, it will get hard and difficult to bend and stretch again.Therefore, do not bend or stretch the bend for over 3 times.(4) In case that direct bending will open cracks to the pipe, first use sharp cutter to cut the insulatinglayer, as shown in Fig. 4.3. Do not bend the pipe until it is exposed. When bending is done, wrap the pipewith insulating layer and then secure it with adhesive tape.Fig. 4.2 Fig. 4.34.3 Indoor Pipe Connection(1) Remove pipe cover and pipe plug.(2) Direct the flared part of copper pipe to the center of screwed joint. Twist on the flared nut tightlyby hand, as in Fig. 4.4. (Make sure indoor pipe is correctly connected. Improper location of the center willprevent flared nut from being securely twisted. Thread of nut will get damaged if the flared nut is twistedforcibly.)(3) Use torque wrench to twist on the flared nut tightly until the wrench gives out a click sound. (Holdthe handle of wrench and make it at right angle to the pipe. as in Fig. 4.5①. Use sponge to wrap the un-insulated connection pipe and joint. Then tie the sponge tightly with plastic tape.②. Connection pipe should be supported by a bearer rather than the unit.③. The bending angle of piping should not be too small; otherwise the piping might have cracks. Please use a pipebender to bend the pipe.④. When connecting IDU with connection pipe, do not pull the big and small joints of IDU with force in case thecapillary tube or other tubes have cracks and cause leakage.1. Use sponge to wrap the un-insulated connection pipe and joint. Then tie the sponge tightly with plastic tape.2. Connection pipe should be supported by a bearer rather than the unit.3. The bending angle of piping should not be too small; otherwise the piping might have cracks. Please use a pipebender to bend the pipe.4. When connecting IDU with connection pipe, do not pull the big and small joints of IDU with force in case thecapillary tube or other tubes have cracks and cause leakage.