ENVIRONMENTALLY FRIENDLY TECHNOLOGY

Insulation (LE)

SUPER ABSORPTION

Rupture disk mounting

Figure 65. Insulation of LE

Generator cover

 

Generator cover

 

 

 

 

 

In some instances local codes may dictate the use of a rupture disk to prevent damage to the chiller in the event of overpressurization of the high and low temperature generators. SANYO units are provided with a flange for mounting a rupture disk.

At this flange connection, a rupture disk may be installed and connected to a field-provided overflow tank per Figure 66.

It is the responsibility of the installing contractor to install the rupture disk on the units and overflow tank (if required) prior to initial chiller startup.

Figure 66. Piping of rupture disk

Discharge piping

Rupture disk mounting instructions are as follows:

1.Prior to installing or replacing the rupture disk, insure that a slight positive pressure is maintained in the chiller with nitrogen gas.

2.Apply Teflon paste to both sides of gasket.

3.Align gasket as shown in Figure 68.

4.Assemble flanges and torque per specifications shown in the manual of rupture disk.

5.Conduct leak test using nitrogen gas at 49 kPa (0.5 kg/cm2G) after installation of rupture disk.

6.Periodic maintenance should include tightening the rupture disk with a torque wrench.

Evaporator coverEvaporator cover

Don't insulate the motor, refrigerant pump and sight glass.

Evaporator cover and chamber cover are

 

30mm thick insulation for cold surface

removable in construction

 

 

 

75mm thick insulation for hot surface

 

30mm thick insulation for cold surface

 

 

 

50mm thick insulation for hot surface

 

 

Table 18. Insulation data

 

Hot surface

Cold surface

 

insulation(m2)

insulation(m2)

Model

75mm

30mm

50mm

30mm

LE-01

2.3

1.4

3.3

0.2

LE-02

2.3

1.4

3.3

0.2

LE-03

2.7

1.6

3.9

0.3

LE-11

2.8

1.6

4.0

0.3

LE-12

2.8

1.8

4.0

0.3

Rupture disk

Support

Vent piping

Tank

Above 35 QFT

: Scope of supply by SANYO

Drain

LE-13

3.8

1.9

5.5

0.3

LE-14

3.8

2.2

5.5

0.3

LE-21

4.0

2.5

6.1

0.4

LE-22

4.0

2.5

6.1

0.4

LE-23

5.2

3.1

7.6

0.5

LE-24

5.2

3.3

7.6

0.5

LE-31

6.0

3.5

8.5

0.5

LE-32

6.0

3.6

8.5

0.5

LE-41

6.6

3.7

9.9

0.5

LE-42

6.6

3.9

9.9

0.5

LE-51

7.6

4.8

13.8

0.7

LE-52

8.4

5.1

15.0

0.7

Figure 67. Fixing methed of rupture disk

High tension bolt

High tension nut

To tank

Pipe

 

Cap screw

 

 

 

Flange

Teflon paste

Flange

Safety head

Rupture disk

Safety head

LE-53

9.2

5.3

16.1

0.7

Pipe

Gasket

Teflon paste

Notice :

1)Material : Glass wool or rock wool (non-combustible type)

2)The total area includes the area of pipes in the chiller.

3)The machine is coated with rust preventive paint before shipment, but is not provided with finish paint.

92

From chiller

Figure 68. Gasket

A

• Material : T/#9090-OR

4.5

3.2

CB

 

4 inch

6 inch

 

 

disk

disk

 

 

 

 

 

A

174.8

222.3

 

(mm)

 

 

 

 

 

 

 

 

B

149.4

209.6

 

(mm)

 

 

 

 

 

 

 

 

C

127.6

182.6

 

(mm)

 

 

 

 

 

 

 

93

 

 

 

Page 48
Image 48
Sanyo DE operation manual Insulation LE, Rupture disk mounting

DE specifications

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