Carrier XCT7 Installations- Und Benutzerhandbuch Seite 18

Installation Procedures
• For normal drainage, the water drainage piping should be connected according to the installation manual. Heat
insulation should be performed to avoid condensation. Improper pipe connection may cause water going into the
machine.
Requirements:
• Heat insulating treatment should be made for the water drainpipes of the indoor units.
• Heat preservation should be made for the connection with the indoor units. Improper heat preservation may cause
condensing.
• The drainpipe should be designed with a down gradient of 1/100. The mid way of the elbow shouldn't be made in S
shape. Else abrupt noise maybe caused.
• The lateral length of the drainpipe should be kept within 20m.
• The central piping can be connected according the following figure.
• Don't apply external force to the connection of drainpipes.
Piping Materials & Heat Insulating Materials
To prevent condensation, heat insulating treatment should be done .
Hose
• The drainage hose is made of 19.05mm (3/4") PVC tube, which can adjust the eccentricity and the angle of the
hard PVC tube.
• Stretch the hose directly to make connections as to avoid distortion. The soft end of the hose should be positioned
with a clamp.
• The hose should be used horizontally.
Heat Insulating Treatment:
• Wrap the connection between the clamp and the root segment of the indoor unit without any gap with heat
insulating materials as shown in the Fig. given below.
Confirming water drainage
During the test run, check the condition of water
drainage and make sure that there is no leakage
on the connection of piping.
Tubing Permissible Length & Height Difference
Please refer to the attached manual of outdoor units.
ATTENTION
down gradient of over 1/100
Piping Material
Heat Insulating Material
attached heat
insulating material
10
Hard PVC tube
VP31.5mm (inner
bore)
Vesicant polythene
thickness: over
7mm
hose
hose champ
heat insulating
material
pvc pipe