Hitachi RAS-2-HVNP Service Manual page 36

2. Unit Installation
Single Installation
Close the part A not to allow the outlet air bypassed. Install to avoid the
drain water from upper unit falling on the lower unit.
Single Installation
Be sure to use the fan direction guide. Close the part A not to allow the
outlet air bypassed. Install to avoid the drain water from upper unit falling
on the lower unit.
When L > H use a base for outdoor unit to make L = H. Close the base not to allow the outlet air bypassed. Be sure to use the fan direction
guide in order to ensure the length marked with ..
22
SMGB0079 rev.0 - 01/2013
Stack installation (allowed up to 2 Units)
Upper Side Open
Allow 100 mm of space between units. Serial sideways installation
allowed up to two units. Leave open both right and left sides. Close the
part A not to allow the outlet air bypassed. Install to avoid the drain water
from upper unit falling on the lower unit.
Upper Side Blocked
Be sure to use the fan direction guide. Allow 100 mm of space between
units. Serial side way installation allowed. but leave open both right and
left sides. Close the part A not to allow the outlet air bypassed. Install to
avoid the drain water from upper unit falling on the lower unit.
Multiple Installation in Multiple Rows
Serial Installation in Multiple Rows (E.g. Rooftop)
Allow approx. 100 mm of space from the side unit. Leave open both right
N O T E
Multiple Installation
Multiple Installation
and left sides.
The length A is as shown in the following table:
L
0 < L ≤ 1/2H
1/2H < L≤ H
A
≤ 300
≤ 350