Sanyo DHX4852 - Manual (Page 32)

2-22
Design of W-2WAY ECO-i SYSTEM Unit Specifications
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
15 to 30
°
B
A
B
A
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
8 in
Indoor unit (more than 2 units)
Horizontal
Indoor unit is directed downward
Installing distribution joint
(1) Refer to “HOW TO ATTACH DISTRIBUTION JOINT”
enclosed with the optional distribution joint kit (APR-
CHP680BA, CHP1350BA, P160BA, P680BA,
P1350BA).
(2) 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.
(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 1.3 ft of the distribution joint.)
(Consult with SANYO separately concerning the ball
valve.)
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.)
Tube branching methods (horizontal use)
2. System Design
TD831138-02_W-2WAY.indb 22 2007/07/26 14:30:44