Drainage And Drain Pipe Installation - Hitachi RASC-HNPE CENTRIFUGAL VRF Series Installation And Operation Manual

Drainage and drain pipe installation

12 DRAINAGE AND DRAIN PIPE INSTALLATION
Provision regarding installation place
Drain water sometimes turns to ice. Therefore, avoid draining in an area that people often use because it is slippery.
Install the unit making sure that the drain outlet part is lower (>25mm / <30mm) than the opposite side in order to avoid incorrect
drain discharge.
Floor mounted
Drain pipe
Drain pipe location
RASC-(4-6)HNPE
Drain pipe
(30 mm Outer diameter)
Drain pipe connection
• It is mandatory to connect a siphon
installation work is needed in order to guarantee connection pipes matching).
Slope >2%
•
• Prepare a draining pipe with an internal diameter higher than 30 mm for the draining line which shall be bent with a down
slope > 2 %.
• Check to ensure that the water drains smoothly by pouring some water into the drain pan.
• Check to ensure that the water does not remain in the drain pan.
• Check the drain connections periodically (once a year), to avoid occurrence of water leakage.
C A U T I O N
•
•
32 PMML0319A rev.1 - 06/2015
>25mm
<30mm
>75 mm
Plug
Ceiling suspended
>25mm
<30mm
Drain pipe
RASC-(8/10)HNPE
Drain pipe (x2 locations)
(30 mm Outer diameter)
C