Configuration Of Connection Pipe - Toyotomi UTN-18AP User Manual

Cooling Capacity
5000 (BTU/h) (1465W)
7000 (BTU/h) (2051W)
9000 (BTU/h) (2637W)
12000 (BTU/h) (3516W)
18000 (BTU/h) (5274W)
24000 (BTU/h) (7032W)
28000 (BTU/h) (8204W)
36000 (BTU/h) (10548W)
42000 (BTU/h) (12306W)
48000 (BTU/h) (14064W)
4. The additional refrigerant oil and refrigerant charging required after
prolonging connection pipe.
§
After the length of connection pipe is prolonged for 10 m at the basis of
standard length, you should add 5 ml of refrigerant oil for each additional
5 m of connection pipe. The calculation method of additional refrigerant
charging amount (on the basis of liquid pipe).
§
Additional refrigerant charging amount = prolonged length of liquid pipe x
additional refrigerant charging amount per meter.
§
Basing on the length of standard pipe, add refrigerant according to the
requirement as shown in the table. The additional refrigerant charging
amount per meter is different according to the diameter of liquid pipe. See
the following sheet.
Confi guration of connection pipe
Diameter of connection pipe
mm
Liquid pipe
1/4''
1/4'' or 3/8''
1/2''
5/8''
3/4''
7/8''
Max length of
connection pipe
Indoor unit
throttle
Cooling only,
Gas pipe cooling and
heating (g / m)
3/8'' or 1/2''
5/8'' or 3/4''
3/4'' or 7/8''
1'' or 1 1/4''
-
-
15
20
25
30
Outdoor unit throttle
Cooling only
(g / m)
16 12
40 12
80 24
136 48
200 200
280 280
111
Cooling and
heating (g / m)
16
40
96
96
200
280
GB