Daikin RXYMQ36MVJU Instruction Manual download pdf (Page 23)

EDUS39-606A-N Installation

Installation of Outdoor Units 22

1. Open the gas line stop valve (leaving the liquid line stop

valve, valve A in the diagram above, close) and perform the

operation to add the refrigerant.

2. Once the appropriate amount of refrigerant is in, press the

confirmation button (BS3) on the outdoor unit PC board

(A1P), and stop operation.Open the stop valves quickly

(both liquid and gas line valves).(This must be done quickly

to avoid the possibility that the pipe might burst.)

3. Stop Valve Operation Method Cautions:

• The figure below shows the name of each part required in

handling the stop valve. At the time of shipment, the stop

valve is closed.

• If only a torque wrench is used to loosen or tighten the flare

nut, the side plate may be distorted. Make sure to fix the

stop valve with a spanner, then loosen or tighten the flare nut

with a torque wrench.

• When it is expected that the operating pressure will be low

(for example, when cooling will be performed while the out-

side air temperature is low), sufficiently seal the flare nut in

the stop valve on the gas line with silicon sealant to prevent

freezing.

• Prepare hexagon wrenches .2 and .3 inches.

How to open the stop valve

1.Insert a hexagon wrench into the valve stem, and turn

the valve stem counterclockwise.

2.When the valve stem cannot be turned any more, stop

turning. Now, the valve is open.

How to close the stop valve

1.Insert a hexagon wrench into the valve stem, and turn

the valve stem clockwise.

2.When the valve stem cannot be turned any more, stop

turning. Now, the valve is closed.

Valve cap

Service port

Field piping

connection part

Valve stem

Silicon sealant

(Take care not to generate cavity.)

Opening direction

Cautions Handling the Valve Cap:

• The valve is sealed in the arrow area. Take care not to dam-

age the arrow area.

Valve cap

Stop valve

(valve cap attachment area)

•

After handling the valve, make sure to tighten the valve cap

securely.

Use the following precautions handling the service port:

• Use charge hose equipped with push in the work.

• After the work, make sure to tighten the valve cap securely.

Tightening torque.....8.5~10.3 ft·lbf

Note: Do not apply force to the valve cap.

Using a spanner on the valve cap and the valve

body could cause a refrigerant leak.

4.8 Electrical Wiring Work

DANGER

• Do not ground units to water pipes, telephone wires, or

lightning rods because incomplete grounding could cause

a severe shock hazard resulting in severe injury or death,

and to gas pipes because a gas leak could result in an

explosion which could lead to severe injury or death.

WARNING

• Disconnect all power to unit to avoid possible electric shock

during installation.

Use only specified wire and connect wires to terminals tightly. Be

careful that wires do not place external stress on terminals. Keep

wires in neat order so as to not to obstruct other equipment.

Incomplete connections could result in overheating, and in worse

cases, electric shock or fire. For details see Power Supply Wiring

Connection Procedure.

Liquid line Gas line

10.0~12.2 ft·lbf 16.6~20.3 ft·lbf

Spanner

prohibition to

valve cap and

body part

Stop valve of two

hangs stucture

Stop valve of one

hangs stucture

Torque

wrench

Torque

wrench

Spanner

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Daikin RXYMQ36MVJU Instruction Manual Page 23

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