Toshiba MCY-MAP0401HT Installation Manual page 11

Allowable length / height difference of refrigerant piping
Outdoor unit
Main
pipe L1
Branching pipe L2
1st branching
section
Height difference
between indoor and
outdoor units H1
Branching pipe
L3
Equivalent length corresponded to farthest piping L
Equivalent length corresponded to farthest piping after 1st branching Li
Y-shape
branch joint
Total extension of pipe (Liquid pipe, real length)
Real length
Furthest piping length
L (*1)
Equivalent length
Piping
Max. equivalent length of main pipe
Length
Equivalent length of furthest piping from 1
branching Li (*1)
Max. real length of indoor unit connecting pipe
Upper outdoor unit
Height between indoor
Height and outdoor units H1
Lower outdoor unit
Difference
Height between indoor units H2
*1: Furthest indoor unit from 1st branch to be named "A".
19-EN
Branch header
a b c d
Intdoor unit
L4
g
e f
∗1
A
Allowable value Pipes
180 m L1 + L2 + L3 + L4 + a + b + c + d + e + f + g
100 m L1 + L3 + L4 + g
125 m
65 m L1
st
35 m L3 + L4 + g
15 m a, b, c, d, e, f. g
30 m –
20 m –
15 m –
Allowable length / height difference of refrigerant piping for quiet
places (with PMV Kit)
Main
pipe L1
1st branching
section
Height difference
between indoor
and outdoor Branching pipe
units H1 L3
Height difference
between indoor
units H2
Total extension of pipe (Liquid pipe, real length)
Furthest piping length
L (*1)
Piping Max. equivalent length of main pipe
Length
Equivalent length of furthest piping from 1
branching Li (*1)
Max. real length of indoor unit connecting pipe
Real length between PMV KIT and indoor unit
Height between indoor
Height
and outdoor units H1
Difference
Height between indoor unit and PMV kit H2
*1: Furthest indoor unit from 1st branch to be named "A".
NOTE
Do not connect two or more indoor units to one PMV Kit. Arrange one indoor unit and one PMV Kit set to 1 by 1.
PMV Kit
– 10 –
Outdoor unit
Branch header
Branching pipe L2
a b c d
h i j
Intdoor unit Intdoor unit
Equivalent length corresponded to farthest piping L
Equivalent length corresponded to farthest piping after 1st branching Li
L4
f
e
Y-shape
branch joint
l m
Allowable value
150 m
+ a + b + c + d + e + f + g + h + I + j + k+ l + m + n
Real length 65 m
Equivalent length 80 m
50 m
st
15 m
15 m
2 m or more
Below 10 m
Upper outdoor unit 30 m
Lower outdoor unit 20 m
15 m
NO GOOD OK
Indoor unit
PMV Kit
Height difference
k
between indoor unit
and PMV Kit H2 *
* Between highest
unit and lower units.
Example)
H2
g
H2
n
∗1
A
H2
Pipes
L1 + L2 + L3 + L4
L1 + L3 + L4 + g + n
L1
L3 + L4 + g + n
a + h, b + i, c + j, d + k, e + l, f + m. g + n
h, i, j, k, l, m, n
–
–
–
PMV Kit
EN
Indoor unit
20-EN