McQuay MWSC 010 Series Manual page 31

Drain Piping Work
ó Drainpipe must be in downward gradient for smooth drainage.
ó Avoid the drainpipe in up and down slope to prevent reversed water fl ow.
ó During the drain piping connection, be careful not to exert extra force on the drain connector at indoor unit.
ó The outside diameter of the drain connection at the fl exible drain hose is 20mm.
ó Be sure to execute heat insulation (polyethylene foam with thickness more than 8.0mm) on the drain piping to
avoid the condensed water dripping inside the room.
Indoor
Unit
Pipe Clamp
GOOD
Drain Test
ó Connect the main drainpipe to the fl exible drain hose.
ó Feed water from fl exible drain hose and check the piping for leakage.
ó When the test is completed, connect the fl exible drain hose to the drain connector on the indoor unit.
NOTE:
This indoor unit uses drain pump for condensed water drainage. Install the unit horizontally to prevent water
leakage or condensation around the air outlet.
Panel Installation
ó The front panel can only be fi tted in one direction, follow the piping direction. (Follow piping arrow sticker on front
panel)
ó Be sure to remove the installation template before installing the front panel.
ó Open the air intake grille by pull back the catchers and remove it together with fi lter from panel.
ó Install the front frame panel onto the indoor unit by 4 screw and tighten it completely to prevent cool air leakage.
ó Connect the LED wire and air swing wire to the indoor unit.
Flexible Drain Hose
BAD
Page 30
Feed Water
Main Drain Pipe