ADDITIONAL REFRIGERANT CALCULATIONS (Y SERIES) example
0000003416.BOOK 45 ページ 2014年11月11日 火曜日 午前9時34分
3. Piping Design
Example: PUHY-P350YKB
Indoor 1: P125
The total length of liquid pipe of each size is as follows:
ø12.7: A + e = 40 + 10 = 50 m
ø9.52: B + C + D + a + b + d = 10 + 15 + 10 + 10 + 5 + 10 = 60 m
ø6.35: c = 10 = 10 m
A
Additional
refrigerant charge
=
(kg)
=
= 12.5 (12.45) kg
Amount of factory charged refrigerant
Outdoor unit
Charged amount
model
P200
6.5kg
8.0kg
P250
P300
P350
11.5kg
P400
11.8kg
P450
Maximum refrigerant charge
There is a limit to the amount of refrigerant that can be charged into a unit. Regardless of the amount yielded by the formula above, observe the maximum
refrigerant charge in the table below.
Total index of the
P200YKB
outdoor units
Maximum *1
22.3kg
refrigerant charge
Total index of the
P800YSKB
outdoor units
Maximum *1
71.4kg
refrigerant charge
*1 Maximum refrigerant charge: the amount of factory-charged refrigerant and the amount of refrigerant to be added on site