Hitachi RAS-H(V)RNME-AF Service Manual page 29

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.
Ensure 250 mm or more of the side space on the pipe cover side.
Allow 400 mm of service space above the top board.
Pipe Cover
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.
Ensure 250 mm or more of the side space on the pipe cover side.
Allow 400 mm of service space above the top board.
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 ..
N O T E
• All units are in (mm).
• Do not stack more than two units in height.
• Close gap (*) to avoid recirculating discharge air flow.
19
SMGB0070 rev. 1 - 08/2011
Blocked in Inlet Side
Pipe Cover
Allow 250 mm of service 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.
Ensure 250 mm or more of the side space on the pipe cover side.
Allow 400 mm of service space above the top board.
Outlet Side Blocked
Be sure to use the fan direction guide. Allow 250 mm of service
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.
Ensure 250 mm or more of the side space on the pipe cover side.
Allow 400 mm of service space above the top board.
Multiple Installation in Multiple Rows
Ensure 250 mm or more of the side space on the pipe cover side.
Allow 400 mm of service space above the top board.
The length A is as show in the following table:
Multiple Installation
Pipe Cover
Pipe Cover
L
0<L=1/2H 150 or greater
1/2H<L≤H 250 or greater
2
A