2. Guideline for each installation process
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Heat pump 50Hz/R410A
Part 3 Design and installation
2.3.1 Drain pipe slope and support
• Slope gradient for drain should be (1/50~1/100mm) and PVC pipes should be used.
• Support hanger should be at 1~1.5m interval to prevent from loosing and dropping.
• Drain pipe insulation
: The inside temperature of drain pipe is about 10°C. When high temperature and humidity air touches the surface of
pipe, dew condensation occurs. To prevent that, drain pipe keeps warm using insulation with polyethylene 10mm
thickness.
1) Application
Refrigerant pipe length contracts and expands on heating and cooling repeatedly. So supporting work is needed not to
hinder each copper pipe connection part.
2) Supporting distance for common drain pipe
[Table]The interval of the supporting hanger for drainage pipe
3) Anchor bolt supporting work
Anchor bolt supporting work should be used for supporting a heavy indoor unit to ceiling.
Clamp hanger supporting work is for hanging refrigerant pipe, drain pipe and cables.
It can prevent vibrating noise from passing through pipe.
We recommend set anchor bolt for supporting indoor unit and strong anchor bolt for supporting pipes and cables
Indoor unit
Gradient of at least 1 / 50 ~ 1 / 100
Pipe diameter
(mm)
Ø20~40
Ø40~50
Ø65~125
Max. interval(m)
Below 1.0
Below 1.2
Below 1.5
