EAS Electric VRV EVR Series Instruction Manual page 73

INDOOR UNIT BRANCH PIPE INSTALLATION MANUAL
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Branch List
Name Gas side joints
EVRI-BP1
EVRI-BP2
EVRI-BP3
EVRI-BP4
EVRI-BP5
EVRI-BP6
Installation Notices
1) Select the branch pipes' model according to the Model Selection Guide and the downstream indoor unit capacity.
2) According to the actual piping size and cut off the needless parts with special tools such as cutter, take the EVRI-
BP1 gas0 side for example and the operating steps as follow:
a.When selecting model EVRI-BP1 the actual object as display in Fig.1, and then suppose that the present
using pipe isΦ15.9 , then as display in Fig.2, cut the welded pipe of the branch pipe component.
b.As display in Fig.2, cut the standalone connecting pipe.
c.As display in Fig.3, weld the branch pipe components with the field pipes.
3) Particularly notice the followings:
a.When the actual pipe size matches with the un-welded side of U-shape three direct links, weld the pipe with the
U-shape three direct links directly.
b.For the separate un-welded connecting pipe of EVRI-BP6 as display in Fig. 3, please cut in the bottom of the
necking side if the flaring side is needed to be used, and vice versa.
Installation Precaution
1) Pay attention to the distance of straight horizontal pipe.
>0.5m
>0.5m
Indoor unit
a.The straight horizontal pipe's distance between two adjacent branch
pipes should ≥0.5m.
b.Distance between two adjacent branches should ≥0.5m.
c.The straight horizontal pipe's distance which outdoor unit connecting
behind the branch pipe should ≥0.5m.
Liquid Side Joints
>0.5m
Indoor unit Indoor unit
Model Selection and Incision Guide
Selection for R22 Model
For R22,how to select indoor unit branch pipes
Down side indoor
Liquid side
unit capacity A (×100W)
Φ9.5
A＜100
100≤A＜160
Φ12.7
160≤A＜330
Φ12.7
330≤A＜480 Φ15.9
480≤A＜640
Φ19.1
640≤A＜900 Φ19.1
900≤A＜1350 Φ22.2
1350≤A Φ25.4
Selection for R410A Model
For R410A,how to select indoor unit branch pipes
Down side indoor Liquid side
unit capacity A (×100W)
A＜166
166≤A＜230
230≤A＜330
330≤A＜460
460≤A＜660
660≤A＜920
920≤A＜1350
1350≤A
Incision
Branch pipe
Cut off the part from middle site
Cut here
Fig.1
2) Pay attention to lay horizontally and vertically.
Direction B
Direction A
≤ ±10°
A horizontally incline angle
≤ ±10°
should not larger than 10°.
B
A
Air side Name of indoor
mm
mm unit branch pipe
Φ19.1 EVRI-BP1
Φ22.2 EVRI-BP2
Φ28.6 EVRI-BP3
Φ34.9 EVRI-BP4
Φ34.9 EVRI-BP4
Φ41.3 EVRI-BP5
Φ54.0 EVRI-BP6
Φ63.5 EVRI-BP6
Name of indoor
Air side
unit branch pipe
mm
mm
Φ9.5 Φ19.1 EVRI-BP1
Φ9.5 Φ22.2 EVRI-BP2
Φ12.7 Φ22.2 EVRI-BP2
Φ12.7 Φ28.6 EVRI-BP3
Φ15.9 Φ28.6 EVRI-BP3
Φ19.1 Φ34.9 EVRI-BP4
Φ19.1 Φ41.3 EVRI-BP5
Φ22.2 Φ44.5 EVRI-BP5
Field pipe
Cut here
Cut here
Cut here
Fig.3
Fig.2
≤ ±10°
Vertical
V.2