Daikin RXYQ96PATJ [50/108] 1 before working
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Daikin RXYQ96PATJ [50/108] 1 before working

Daikin RXYQ96PATJ [50/108] 1 before working
EDUS391000-N_a Installation
Installation of Outdoor Units 49
12-1 Before working
[About the refrigerant tank]
Check whether the tank has a siphon pipe before charging and place
the tank so that the refrigerant is charged in liquid form.
(See the figure below.)
• Always use the proper refrigerant (R410A). If charged with the
refrigerant containing an improper material, it may cause an
explosion or accident.
• R410A is a mixed refrigerant, so charging it as a gas will cause the
refrigerant composition to change, which may prevent normal
operation.
[Shutoff valve operation procedure]
When operating the shutoff valve, follow the procedure instructed
below.
• Do not open the shutoff valve until “10. CHECKING OF DEVICE
AND INSTALLATION CONDITIONS” are completed. If the shutoff
valve is left open without turning on the power, it may cause
refrigerant to buildup in the compressor, leading insulation
degradation.
• Be sure to use the correct tools.
The shutoff valve is not a back-seat type. If forced it to open, it
might break the valve body.
• When using a service port, use the charge hose.
• After tightening the cap, make sure no refrigerant gas is leaking.
Tightening torque
The sizes of the shutoff valves on each model and the tightening
torque for each size are listed in the table below.
<Size of Shutoff Valve>
(Refer to figure 28)
1. Service port
2. Cap
3. Hex holes
4. Shaft (valve body)
5. Seal section
To open
1. Remove the cap and turn the shaft counterclockwise with the
hexagon wrench.
2. Turn it until the shaft stops.
3. Make sure to tighten the cap securely.
(For the tightening torque, refer to the item <Tightening Torque>.)
To close
1. Remove the cap and turn the shaft clockwise with the hexagon
wrench.
2. Securely tighten the valve until the shaft contacts the main body
seal.
3. Make sure to tighten the cap securely.
(For the tightening torque, refer to the item <Tightening Torque>.)
<Tightening torque>
With siphon pipe
Other tanks
72PA type 96PA type
108PA/120P(R)
type
Liquid pipe
shutoff valve
φ3/8
The 108PA type corresponds to the
φ
1/2 - diameter
onsite piping using the accessory pipe.
Low side
equalizer pipe
shutoff valve
φ1
All types corresponds to the φ3/4 - diameter onsite
piping using the accessory pipe.
Gas shutoff
valve
φ3/4
The 72PA type corresponds to the
φ
3/4 - diameter
onsite piping using the accessory pipe.
The 96PA type corresponds to the
φ
7/8 - diameter
onsite piping using the accessory pipe.
The 108PA/120P(R) type corresponds to the
φ
1-1/8 -
diameter onsite piping using the accessory pipe.
High side
equalizer pipe
shutoff valve
φ3/4
Stand the tank upright and charge.
(The siphon pipe goes all the way inside,
so the tank does not need be put
upside-down charge in liquid form.)
Stand the tank upside-down and charge.
Shutoff
valve size
Tightening torque ft · lbf (Turn clockwise to close)
Shaft (valve body) Cap (valve lid) Service port
φ 3/8 3.98 - 4.87
Hexagonal
wrench 4mm
9.95 - 12.17
8.48 - 10.3
φ 1/2 5.97 - 7.30 13.3 - 16.2
φ 3/4
19.9 - 24.3
Hexagonal
wrench 8mm
16.6 - 20.3
φ 1

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