Sanyo CHDZ09053 - Manual (Page 33)

2-23
Design of W-3WAY ECO-i SYSTEM Unit Specifi cations
1
2
3
4
5
6
7
8
15 to 30
B
A
B
A
Tube branching methods (horizontal use)
Arrow view
Horizontal
line
View as seen
from arrow
Ball valve
(BV: purchased
separately)
Main tubing
Types of vertical trap specifications
(If only 1 unit is connected, a ball valve
is also needed on this side.)
Indoor unit (1)
(When not using ball valve)
(When using ball valve)
Branch tubing is
directed upward.
(Each unit is connected
to tubing that is either
level or is directed
downward.)
Main tubing
Indoor unit
More than
7–7/8"
Indoor unit (more than 2 units)
Horizontal
Indoor unit is directed downward
Outdoor
Indoor
Indoor
Indoor
Solidly welded
shut (X)
Horizontal
line
Horizontal
line
L3 6.56 ft.
Install at a
positive angle
Install at a
positive angle
(15 – 30°)
Header joint system (Indoor)
2-3. Installing Distribution Joint
(1) Refer to “HOW TO ATTACH DISTRIBUTION JOINT”
enclosed with the optional distribution joint kit (APR-
CHRZP900BAB, RZP224BAB, RZP680BAB,
RZP1350BAB).
(2) When creating a branch using a commercially available
T-joint (header joint system), orient the main tubing so that
it is either horizontal (level) or vertical. In order to prevent
accumulation of refrigerant oil in stopped units, if the main
tubing is horizontal then each branch tubing length should
be at an angle that is greater than horizontal. If the main
tubing is vertical, provide a raised starting portion for each
branch.
[Header joint system]
Be sure to solidly weld shut the T-joint end (marked by “X”
in the fi gure). In addition, pay attention to the insertion
depth of each connected tube so that the fl ow of refrig-
erant within the T-joint is not impeded.
When using the header joint system, do not make fur-
ther branches in the tubing.
Do not use the header joint system on the outdoor unit
side.
(3) If there are height differences between indoor units or if
branch tubing that follows a distribution joint is connected
to only 1 unit, a trap or ball valve must be added to that
distribution joint. (When adding the ball valve, locate it within
15 - 3/4" of the distribution joint.)
If a trap or ball valve is not added, do not operate the
system before repairs to a malfunctioning unit are
completed. (The refrigerant oil sent through the tubing
to the malfunctioning unit will accumulate and may
damage the compressor.)
2. System Design
Pay special attention to any
location, such as a basement,
etc., where leaking refrigerant
can accumulate, since
refrigerant gas is heavier than
air.
CAUTION