Daikin FTV-A Series Engineering Data page 17

4. Drain Piping
• Connect the drain hose, as described below.
The drain hose should
be inclined downward.
No trap is permitted.
Do not put the end
of the hose in water.
• Water Drainage
Water Water
leaking leaking
Wrong Wrong
Correct
• Remove the air filters and pour some water into
the drain pan to check the water flows smoothly.
Water
retention
End
dipped
Water
into
leaking
water
Drain
Wrong
• When drain hose requires extension, obtain
an extension hose commercially available.
Be sure to thermally insulate the indoor section
of the extension hose.
Indoor unit
drain hose
Heat insulation tube (Field supply)
• When connecting a rigid polyvinyl chloride pipe
(inner diameter 16mm) directly to the drain hose
attached to the indoor unit as with embedded
piping work, use any commercially available drain
socket (inner diameter 16mm) as a joint.
Drain hose supplied socket (inner
with the indoor unit diameter 16mm)
Installation Guideline
Extension drain hose
polyvinyl pipe
(diameter 16mm)
15