Table of Contents
Advertisement
7. DRAIN PIPING WORK
〈〈 〈〈 〈〈 〈〈Rig the drain pipe as shown below and take measures
against condensation. Improperly rigged piping could lead
to leaks and eventually wet furniture and belongings.〉〉 〉〉 〉〉 〉〉
(1) Install the drain pipes.
• Keep piping as short as possible and slope it downwards so that air
may not remaine trapped inside the pipe.
• Keep pipe size equal to or greater than that of the connecting pipe
(Vinyl pipe of 25 mm nominal diam. and 32 mm outer diam.)
• Use the attached drain hose and clamp metal.
Insert the drain hose all the way into the drain socket and fasten
securely with a clamp on the part of the hose with white tape.
Tighten the clamp screw until the inference is no more than 4 mm.
• Be sure to insulate the following two items in order to prevent water
leakage caused by condensation.
• Indoors darin piping
• Drain socket
While referring to the figure on the right, insulate the clamp and
drain hose with the attached large sealing pad.
• If the drain hose cannot be sufficiently set on a
slope, fit the hose with drain raising piping as
shown in the drawing.
Be sure to use the attached drain hose, drain
raising pipe, clamp and drain pipe insulation.
• Secure a downward gradient of 1/100 or more
for the drain pipe. To accomplish this, mount
supporting brackets at an interval of 1 - 1.5 m.
• Use the following outline if lay-
ing central drain piping.
〈 〈 〈 〈 Drain raising pipe laying proce-
dure〉 〉 〉 〉
(1) Connect the drain raising
pipe and drain hose and fasten
with a clamp.
(2) Mount the drain pipe insulation and wrap with vinyl tape.
(3) After completing steps (1) and (2), attach the drain raising pipe to the drain pipe connection port of the
indoor unit and fasten with a clamp. (Do not connect any other pipes between the drain raising pipe and
the indoor unit.)
• Adjust the drain raising height by turning the drain raising pipe as shown in the
figure.
(2) After piping, check to make sure draining flows smoothly.
If construction work for interconnecting piping is complete:
Using a plastic container for water filling, etc., gradually inject about
1,000 cc of water into the drain pan through the inspection hatch.
NOTE
• To drain water from the drain pan, use the drainage port for mainte-
nance.
9
Clamp metal
(Attached with unit)
Ceiling slab
Attached
insulation
Clamp metal
Attached drain raising pipe
Clamp metal
Drain hose
Large sealing pad
(Attached with unit)
Drain hose
4mm or less
1 ~ 1.5 mm
Supporting bracket
Adjustable
Attached drain hose
Clamp metal
Drain pipe
Central drain
pipe
Inspection hatch
Drainage port for maintenance
(With rubber cap)
Plastic container for water filling
English
Advertisement
Table of Contents
