Mitsubishi Electric M Series Manual page 579

M series
4. Dimensions and required servicing space of Branch Box
PAC-AK30BC (3-branches type)
450 91
205 73
C B A
C B A
25 25 25 21
75 75
( ) 1
450
Min.
Min.
250
50
Fig. 4-4
Fig. 4-6
(3)
Min. 250
Fig. 4-7
5. Refrigerant piping
* Always follow the specifications written in the installation manual of the outdoor unit. Exceeding these requirements may cause reduced performance of the
equipment, and malfunctions.
320
12
95 280 39
61 79 50 34
200
23
Fig. 4-3
( ) 2
*1
Min.
Min.
250
250
280 A
180-200
B
*3
Fig. 4-5
450
MULTI SYSTEM Inverter Heat Pump
PAC-AK30BC (Fig. 4-3)
Suspension bolt: W3/8 (M10)
(mm)
Refrigerant pipe flared connection
A B
Liquid pipe ø6.35 ø6.35
Gas pipe ø9.52 ø9.52
Drain hose size: O.D.20 (VP16)
4.1. Space required for Installation and servicing
(1) Front View (Fig. 4-4)
Branch box
On the side of piping
(2) Side View (Fig. 4-5, Fig. 4-6)
For indoor installations
Ceiling board
Maintenance hole
PCB side
*1: A minimum 350 mm is required for 90° bends in refrigerant piping.
*2: A A is "Min. 200 mm" <recommendation>.
(Premise: The slope of drain piping is securable 1/100 or more. Required 200 mm or
more, when not securable.)
In the case of less than 200 mm (for example
box from a maintenance hole becomes difficult (Only exchange work of a PCB, linear expan-
sion valve coils, sensors and drain pan is possible).
*3: is " 600" <recommendation>.
B
In the case of " 450", prepare a maintenance hole at a PCB side (as it is shown in
Fig. 4-6), and "Min. 300 mm" is needed as distance
In the case of less than 300 mm (for example
box, linear expansion valve coils, sensors, and drain pan from a maintenance hole becomes
difficult (Only exchange work of a PCB is possible).
(3) Top View (Fig. 4-7)
Refrigerant piping
When facing in the opposite direction to the refrigerant piping.
C T o o u d t o r o
ø6.35 ø9.52
ø9.52 ø15.88
is 100 mm), the exchange work of Branch
A
.
A
A is 100 mm), the exchange work of Branch
u n t i
C-577