Daikin LRYEQ-AY - Инструкция по эксплуатации - Страница 12

Installation manual

9

LRYEQ16A7Y1

CONVENI-PACK

4P448939-1A – 2016.07

1.

Directions to bring out the pipes
The local interunit piping can be connected either forward or to the 
sides (taken out through the bottom) as shown in the following figure.
When passing out through the bottom, use the knock hole in the bottom frame.

Precautions when knocking out knock holes

• Open knock hole in the base frame by drilling the 4 concave around 

it with a 6 mm bit.

• Be sure to avoid damaging the casing
• After knocking out the holes, we recommend you remove any burrs 

and paint them using the repair paint to prevent rusting.

• When passing electrical wiring through the knock holes, protect the 

wiring with a conduit or bushings, making sure not to damage the 
wiring.

2.

Removing Pinch Piping

WARNING

Any gas or oil remaining inside the stop valve may blow off the pinch 
piping.
Failure to observe the instructions in procedure below properly may 
result in property damage or personal injury, which may be serious 
depending on the circumstances.

Use the following procedure to remove the pinched piping:
1. Remove the valve cover and make sure that the stop valves are 

fully closed.

1 Service port and service port cover
2 Stop valve
3 Field piping connection
4 Stop valve cover

2. Connect the vacuuming/recovery unit through a manifold to the 

service port of all stop valves.

1 Pressure reducing valve
2 Nitrogen
3 Weighing scales
4 Refrigerant R410A tank (siphon system)
5 Liquid line stop valve (X2, refrigerant and air conditioning side)
6 Gas line stop valve (X2, refrigerant and air conditioning side)
7 Vacuum pump
A Valve A
B Valve B

3. Recover gas and oil from the pinched piping by using a recovery 

unit.

CAUTION

Do not vent gases into the atmosphere.

4. When all gas and oil is recovered from the pinched piping discon-

nect the charge hose and close the service ports.

5. Cut off the lower part of the gas and liquid stop valve pipes along 

the black line. Use an appropriate tool (e.g. a pipe cutter, a pair of 
nippers)

WARNING

Never remove the pinched piping by brazing.
Any gas or oil remaining inside the stop valve may blow off the pinched 
piping.

6. Wait until all oil is dripped out before continuing with the connection 

of the field piping in case the recovery was not complete.

Operation Method of Shutoff Valves
Follow the instructions below when operating each shutoff valve.

Right-side connection

Front connection

Left-side connection

Knock hole

Concave section 
(4 places)

Drill

3

4

1

2

p<

p>

R410A

N2

2

3

7

1

5

6

4

A

B

4PEN448939-1A.book  Page 9  Monday, September 5, 2016  7:12 PM