Adding Refrigerant - Toshiba MMY-MAP1404 Series Quick Reference

Super modular multi system

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Adding Refrigerant

After finishing vacuuming, exchange the vacuum pump with a refrigerant cylinder and start additional charging of refrigerant.

Calculation of additional refrigerant charge amount

Refrigerant charge amount at shipment from the factory does not include the refrigerant for pipes at the local site.

For refrigerant to be charged in pipes at the local site, calculate the amount and charge it additionally.

NOTE

If the additional refrigerant amount indicates minus as the result of calculation, use the air conditioner without additional refrigerant.

Heat pump type

Additional re frigerant

charge amount at local site

Table 1

Liquid pipe dia. (mm)

Additional refrigerant amount/1m liquid pipe (kg/m)

Table 2

Standard type

High Efficiency type

Charging of refrigerant

• Keeping the valve of the outdoor unit closed, be sure to charge the liquid refrigerant into the service port at the liquid side.

• If the specified amount of refrigerant cannot be charged, fully open the valves of the outdoor unit at liquid and gas sides, operate the

air conditioner in COOL mode, and then charge refrigerant into service port at the gas side.

In this time, choke the refrigerant slightly by operating the valve of the canister to charge liquid refrigerant.

• The liquid refrigerant may be charged suddenly, therefore be sure to charge refrigerant gradually.

Outdoor unit type

Charging amount (kg)

= Real length of liquid pipe ×

Combined HP

(HP)

8HP

10HP

12HP

14HP

16HP

10HP

12HP

16HP

12HP

16HP

8HP

10HP

8HP

10HP

12HP

MAP080

MAP100

Additional refrigerant charge

amount per 1 m liquid pipe

(Table 1)

6.4

9.5

0.025

0.055

Combined outdoor units

(HP)

—

8HP

—

10HP

—

10HP

—

12HP

—

10HP

—

12HP

—

14HP

—

16HP

—

12HP

10HP

12HP

10HP

12HP

14HP

12HP

16HP

12HP

16HP

14HP

16HP

8HP

—

8HP

10HP

8HP

10HP

8HP

10HP

8HP

10HP

12HP

10HP

12HP

MAP120

MAP140

11.5

Corrective amount of refrigerant depending

on HP of cooperating outdoor units

(Table 2)

12.7

15.9

19.1

0.105

0.160

0.250

C (Corrective amount

of refrigerant) (kg)

—

10.5

—

11.5

—

12.5

—

10.0

—

12.0

—

14.0

—

8HP

10HP

12HP

MAP160

22.2

0.350

1.5

2.5

3.5

8.5

0.0

3.0

5.0

7.5

8.5

9.5

3.0

4.0

6.0

7.0

8.0

0.0

-4.0

-2.0

0.0

-6.0

-5.0

-4.0

-2.0

0.0

2.0

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Mmy-map1604 series Mmy-map0804 series Mmy-map1004 series Mmy-map1204 series

Adding Refrigerant - Toshiba MMY-MAP1404 Series Quick Reference