Table of Contents
Advertisement
5. Pipe length and refrigerant amount for multi split type air conditioner.
(see tabel 2.3)
Connective pipe
Cooling capacity
length (Lx)
(BTU/h)
26000
34400
Caution in handling the packed valve integrated in the
outlets of outdoor unit.
1. Operation of opening packed valve: Open the valve stem until it hits against
the stopper. Do not try to open it further.
2. Operation of closing packed valve: Securely tighten the valve stem with a
special tool. Then securely tighten the valve stem cap with a spanner or the
like. Refer to the table on page 17 for valve cap tightening torque.
Note: There is a charging port integrated in the low side outlet, but not in the
high side outlet. The low side outlet is shown in the sketch map below.
Outdoor unit
A
B
Packed valve
Purging the system
21
Max connective pipe
total length (H1)
197'
25'~66'
(x=1, 2, 3)
(H1=L1+L2+...+Lx, x≤3)
25'~82'
246'
(H1=L1+L2+...+Lx, x≤5)
(x=1, 2, 3, 4, 5)
Outdoor unit
L1
a
Refrigerant
Indoor unit
Gas
Half union
Table 2.3
Max height
difference (H2)
50'
Use vacuum pump.
50'
Use vacuum pump.
L2
L3
b
c
Indoor unit
Valve body
C
D
Additional amount of
Air purging
refrigerant to be charged
R410a: 0.22ozs/ft (Pipe length-82')
R410a: 0.22ozs/ft (Pipe length-131')
L4
L5
d
e
Flare nut
Charge port
Valve stem
Stopper
Lx
Cap
Advertisement
Table of Contents
