Daikin RXYQ10PY1 [278/487] Pipe insulation

Daikin RXYQ46PY1 [278/487] Pipe insulation
Pipe Insulation ED34-645B
670 Installation of Outdoor Units
9. Pipe Insulation
Insulation of pipes should be done after performing 8. Air Tight Test and Vacuum Drying”.
Always insulate the liquid side piping and gas side piping in the interunit piping and refrigerant branching kit.
Failing to insulate the pipes could cause leaking or burns. (The gas side piping can reach temperatures of 120°C.
Be sure the insulation used can withstand such temperatures.)
Reinforce the insulation on the refrigerant piping according to the installation environment. Condensation might
form on the surface of the insulation.
Ambient temperature: 30°C, humidity: 75% to 80% RH: min. thickness: 15 mm.
If the ambient temperature exceeds 30°C and the humidity 80% RH, then the min. thickness is 20 mm.
If there is a possibility that condensation on the shutoff valve might drip down into the indoor unit through gaps in
the insulation and piping because the outdoor unit is located higher than the indoor unit, etc., this must be
prevented by caulking the connections, etc.
1.Liquid side shutoff valve
2.Gas side shutoff valve
3.Indoor interunit piping
4.Insulation material
5.Coking, etc.
6.Refrigerant charge port
The piping lead-out hole lid should be attached after opening a knock hole.
If small animals and the like might enter the unit through the piping lead-out hole, close the hole with blocking
material (procured on site) after completion of 11. Additional Refrigerant Charge and Check Operation”.
1.Piping lead-out hole lid
2.Open a knock hole at “ ”.
3.Block “ ”.
4.Liquid side piping
5.Gas side piping
After knocking out the holes, we recommend you remove burrs in the knock holes (see previous figure) and paint
the edges and areas around the edges using the repair paint.
10.Checking of Device and Installation Conditions
Be sure to check the followings.
For those doing electrical work
1. Make sure there is no faulty transmission wiring or loosing of a nut.
See “7-4 Transmission Wiring Connection Procedure”.
2. Make sure there is no faulty power wiring or loosing of a nut.
See “7-5 Power Wiring Connection Procedure”.
3. Has the insulation of the main power circuit deteriorated?
Measure the insulation and check the insulation is above regular value in accordance with relevant local and
national regulations.
For those doing pipe work
1. Make sure piping size is correct.
See “6-1 Selection of Piping Material and Refrigerant Branching Kit”.
2. Make sure insulation work is done.
See “9. Pipe Insulation”.
3. Make sure there is no faulty refrigerant piping.
See “6. Refrigerant Piping”.
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