MS-SVN056C-EN 39
Outdoor Unit Installation
Drain pipe connection
1. Drain pipe installation in indoor unit
• For the drain line, use PVC piping of outside dia. 37-39mm and indoor dia. int. 32mm.
• Join the drain pipe connector to the pipe coming from the condensate pump; join the drain pipe
to the outgoing pipe and firmly apply insulation material around both tubes to prevent the
formation of condensation caused by incoming air.
• To avoid water return during unit shutdown, place the drain pipe in a manner that it may drain
water to the outside. Drain line dip should be superior to 1/50. Prevent the return of stagnant water
to the indoor unit.
• While connecting drain pipe to the unit, do not apply excessive force to prevent tension over the
unit. To avoid sagging, support drain line at each 1m to 1.5m or apply ties to the connection pipe.
• Should it be necessary to install a longer drain line, employ a nipple to ensure coupling integrity.
• If a riser is required for draining, employ a vertical riser as it relates to the unit which height should
be less than 200mm. If height is superior to 200mm, water return will take place during the shut
off cycle of the unit which consequently will provoke condensate overflow.
• Drain pipe height from the ground to the end of the tube should be more than 50mm. Do not place
the end of the drain pipe in water. For condensate draining, fold the tube in U shape in order to
avoid the return of standing water to the indoor unit.
2. Draining system test
• Verify the integrity and appropriate sealing of all couplings.
• Remove water access cap. Pour 2000ml of water into the drain pan through the water level
opening.
• Energize the unit and operate in cooling mode. Verify that drain pump operation sounds normal
and that water is properly drained. Verify the absence of leaks in all couplings.
• Stop the unit, cancel power supply, and replace the cap on the water access receptor.
Note: The cap on the bottom part of the drain pan may be used to aid in draining. During
normal unit operation, ascertain that this cap is properly placed in order to prevent
leaking.
3. Drain cap on outdoor unit
• Place washer ring inside the sealing cap and then place this cap inside the opening of the base
pan on the outdoor unit. Turn this cap 90º to ensure it has hermetically sealed. If condensate water
is observed to be draining during the heating mode operation, connect the sealing cap to a drain
hose extension acquired locally.
Washer/grommet
Drain coupling
Washer/ grommet
Opening of base pan
on outdoor unit
To Next Page
Loading...
Need help?
General