Daikin RZQG71L9V1B Installer's Reference Manual

Also see for RZQG100L8Y1B: Service manual Installation manual Installation manual

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Daikin RZQG71L9V1B Installer's Reference Manual Manual pdf 16 page image

6 InstallationInstaller reference guide16RZQG71~140L_V1+Y1 + RZQSG100~140L_V1+Y1Split system air conditioners4P385522-1A – 2016.10▪ Do NOT apply excessive force to the valve stem. Doing so maybreak the valve body.▪ Always make sure to secure the stop valve with a spanner, thenloosen or tighten the flare nut with a torque wrench. Do NOT placethe spanner on the stem cap, as this could cause a refrigerantleak.aba Spannerb Torque wrench▪ When it is expected that the operating pressure will be low (e.g.when cooling will be performed while the outside air temperatureis low), sufficiently seal the flare nut in the stop valve on the gasline with silicon sealant to prevent freezing.Silicon sealant, make sure there is no gap.To open/close the stop valve1 Remove the valve cover.2 Insert a hexagon wrench (liquid side: 4 mm, gas side: 6 mm)into the valve stem and turn the valve stem:Counterclockwise to open.Clockwise to close.3 When the valve stem cannot be turned any further, stop turning.The valve is now opened/closed.To handle the stem cap▪ The stem cap is sealed where indicated with the arrow. Do NOTdamage it.▪ After handling the stop valve, tighten the stem cap, and check forrefrigerant leaks.Item Tightening torque (N∙m)Stem cap, liquid side 13.5~16.5Stem cap, gas side 22.5~27.5To handle the service cap▪ 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, tighten the service port cap, andcheck for refrigerant leaks.Item Tightening torque (N∙m)Service port cap 11.5~13.96.4.8 To connect the refrigerant piping to theoutdoor unit1 Do the following:▪ Remove the service cover (a) with screw (b).▪ Remove the piping intake plate (c) with screw (d).cabd2 Choose a piping route (a, b, c or d).abcd3 If you have chosen the downwards piping route:▪ Drill (a, 4×) and remove the knockout hole (b).▪ Cut out the slits (c) with a metal saw.ccba4× Ø6 mm4 Do the following:▪ Connect the liquid pipe (a) to the liquid stop valve.▪ Connect the gas pipe (b) to the gas stop valve.ab5 Do the following:▪ Insulate the liquid piping (a) and the gas piping (b).▪ Wind heat insulation around the curves, and then cover itwith vinyl tape (c).▪ Make sure the field piping does not touch any compressorcomponents (d).▪ Seal the insulation ends (sealant etc.) (e).