VP 30Secure the elevation as high as possible(approx. 100 mm)A downhill grade of1/100 or moreDrain hoseJoint for VP 25(Local procurement)600(Maximum local drain up dimension)Right overhead290~325mmAttached drain hose clampDrain pipingMain unitDrain situation can be checked with transparent socketRemove grommet.Make sure to installit back after test.Insert water supply hosefor 20 mm ~ 30 mm tosupply water.(Insert hose facingtoward bottom.)Pour water into a convex joint.When constructing drain piping for several units, positionthe common pipe about 100 mm below the drain outletof each unit as shown in the sketch. Use VP-30(11/4")or thicker pipe for this purpose.Be sure to provide heat insulation to hard PVC pipes ofindoor placement.Do not ever provide an air vent.The height of the drain head can be elevated up to apoint 500 mm above the ceiling, and when an obstacleexists in the ceiling space, elevate the piping to avoidthe obstacle using an elbow or corresponding gadget.When doing this, if the stretch for the needed height ishigher than 500 mm, the back-flow quantity of drain atthe event of interruption of the operation gets too muchand it may cause overflow at the drain pan. Therefore,make the height of the drain pipe within the distancegiven in the sketch below.Avoid positioning the drain piping outlet at a place wheregeneration of odor may be stimulated. Do not lead thedrain piping direct into a sewer from where sulfur gasDrainage TestConduct a drainage test after completion of the electrical work.During the trial, make sure that drain flows properly through the piping and that no waterleaks from connections.In case of a new building, conduct the test before it is furnished with the ceiling.Be sure to conduct this test even when the unit is installed in the heating season.ProceduresSupply about 1000 cc of water to the unit through the air outlet using a feed waterpump.(d)(e)(f)(h)(g)123412(In the electrical work has not beencompleted, connect a convex joint in thedrain pipe connection to provide a waterinlet. Then, check if water leaks from thepiping system and that drain flows through