01
La
Lb
(b)
(a)
L1
L3
L2
f
g
h
c
a
b
k
l
L8
i
j
(m)
o
n
(o)
(n)
d
e
m
L4
L5
L6
L7
Outdoor Unit
Header unit (A)
Follower unit (B)
Height difference
between outdoor units
H3
≤
0.3 ft (0.1 m)
Outdoor unit connecting pipes
Main
piping
Height
difference
between
outdoor
and indoor
units:
H1
≤
165 ft
(50 m)
First branching
section
FS unit
Branching pipe
Branching header
Indoor unit connecting pipe
Indoor unit
Y-shape branching joint
The longest piping length: L
≤
640 ft (195 m)
The longest piping length from the first branch: Li
≤
215 ft (65 m)
Max. equivalent piping length in group of the FS unit: Ln
≤
98 ft (30 m)
Y-joint
FS unit
Indoor unit
Height difference
between indoor units:
H2
≤
130 ft
(40 m)
Height difference
between indoor units
in same FS unit
H4
≤
1.6 ft
(0.5 m)
Allowable length of refrigerant pipes and allowable height difference between units
Refrigerant Piping
System restriction
Max. No. of combined outdoor units
2 units
Max. capacity of combined outdoor units
20 ton
Max. No. of connected indoor units
40 units
Max. capacity of combined indoor units
H2
≤
49 ft (15 m)
125 %
H2 > 49 ft (15 m)
105 %
Содержание R410A
Страница 1: ...Quick reference SHRM File No A13 004 SUPER HEAT RECOVERY MULTI UL Model R410A ...
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