Daikin Altherma ERHQ011BAV3 Installation Manual

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Daikin Altherma ERHQ011BAV3 Installation Manual Manual pdf 17 page image

ERHQ011~016BAV3+W1 + ERLQ011~016CAV3+W1Outdoor unit for air to water heat pump4PW57794-1A – 05.2011Installation manual14■ When it is expected that the operating pressure will be low (forexample, when cooling will be performed while the outside airtemperature is low), sufficiently seal the flare nut in the stopvalve on the gas line with silicon sealant to prevent freezing.Opening/closing the stop valveOpening the stop valve1. Remove the valve cover.2. Insert a hexagon wrench (liquid side: 4 mm/gas side: 6 mm) intothe valve stem and turn the valve stem counterclockwise.3. When the valve stem cannot be turned any further, stop turning.The valve is now open.Closing the stop valve1. Remove the valve cover.2. Insert a hexagon wrench (liquid side: 4 mm/gas side: 6 mm) intothe valve stem and turn the valve stem clockwise.3. When the valve stem cannot be turned any further, stop turning.The valve is now closed.Cautions on handling the stem cap■ The stem cap is sealed whereindicated by the arrow. Take care notto damage it.■ After handling the stop valve, makesure to tighten the stem cap securely.For the tightening torque, refer to thetable below.■ Check for refrigerant leaks after tightening the stem cap.Cautions on handling the service port■ Always use a charge hose equipped with a valve depressor pin,since the service port is a Schrader type valve.■ After handling the service port, make sure to tighten the serviceport cap securely. For the tightening torque, refer to the tablebelow.■ Check for refrigerant leaks after tightening the service port cap.9.4. Tightening torques10. REFRIGERANT PIPING■ Field pipes can be installed in four directions (A, B, C, D).Figure - Field pipes in 4 directions1 Drill2 Centre area around knock-out hole3 Knock-out hole4 Slit5 Connecting pipe6 Bottom frame7 Front plate8 Pipe outlet plate9 Screw front plate10 Pipe outlet plate screwA ForwardB BackwardC SidewaysD Downward■ Cutting out the two slits makes it possible to install as shown inthe figure "Field pipes in 4 directions".(Use a metal saw to cut out the slits.)■ To install the connecting pipe to the unit in a downward direction,make a knock-out hole by penetrating the centre area aroundthe knock-out hole using a Ø6 mm drill (4x). (See figure "Fieldpipes in 4 directions".)■ After knocking out the knock-out hole, it is recommended toapply repair paint to the edge and the surrounding end surfacesto prevent rusting.■ When passing electrical wiring through the knock-out holes,remove any burrs from the knock-out holes and wrap the wiringwith protective tape to prevent damage.1 Knock-out hole2 Burr3 Packing materials10.1. Preventing foreign objects from enteringPlug the pipe through-holes with putty or insulating material(procured locally) to stop up all gaps, as shown in the figure.1 Putty or insulating material(produced locally)If there is any possibility that small animals enter the system throughthe knock-out holes, plug the holes with packing materials (fieldsupplied).Insects or small animals entering the outdoor unit may cause a shortcircuit in the electrical box.In cold climates, seal knock-out holes to avoid enterance of snow andhumidity.Silicon sealant(Make sure there is no gap)Closing directionLiquid side Gas sideItem Tightening torque (N•m)Stem cap, liquid side 13.5~16.5Stem cap, gas side 22.5~27.5Service port cap 11.5~13.94432187910ADCB5 62 311