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7 Installation
a
Ø22 mm
e
a
Condensate discharge from boiler
b
Soil and vent stack
c
Sink or basin with integrated overflow
d
75 mm waste trap and air break
e
Condensate pump
7.5.2
External connections
If an externally condensate drainage pipe is used, following
measures should be made to prevent freezing:
▪ The pipe should be run internally as far as possible before going
to the outside. The pipe diameter should be increased to a
minimum inner diameter of 30 mm (typically outer diameter of
32 mm) before it goes through the wall.
▪ The external run should be kept as short as possible, taking the
most vertical route possible to the discharge point. Take into
account that there are no horizontal section in which condensate
might collect.
▪ The external pipe should be insulated. Use a suitable waterproof
and weather proof insulation ("Class O" pipe insulation is suitable
for this purpose).
▪ The use of fittings and elbows should be kept to a minimum. Any
internal burrs should be removed so that the internal pipe section
is as smooth as possible.
7.6
Connecting the refrigerant piping
7.6.1
About connecting the refrigerant piping
Before connecting the refrigerant piping
Make sure the outdoor and indoor unit are mounted.
Typical workflow
Connecting the refrigerant piping involves:
▪ Connecting the refrigerant piping to the outdoor unit
▪ Connecting the refrigerant piping to the indoor unit
▪ Insulating the refrigerant piping
▪ Keeping in mind the guidelines for:
▪ Pipe bending
▪ Flaring pipe ends
▪ Brazing
▪ Using the stop valves
Installer reference guide
26
b
c
≥75 mm
d
7.6.2
Precautions when connecting the
refrigerant piping
INFORMATION
Also read the precautions and requirements in the
following chapters:
▪ General safety precautions
▪ Preparation
DANGER: RISK OF BURNING
CAUTION
▪ Do NOT use mineral oil on flared part.
▪ Do NOT reuse piping from previous installations.
▪ NEVER install a drier to this R32 unit to guarantee its
lifetime. The drying material may dissolve and damage
the system.
CAUTION
▪ Use the flare nut fixed to the main unit.
▪ To prevent gas leakage, apply refrigeration oil only to
the inside of the flare. Use refrigeration oil for R32.
▪ Do not reuse joints.
NOTICE
Take the following precautions on refrigerant piping into
account:
▪ Avoid anything but the designated refrigerant to get
mixed into the refrigerant cycle (e.g. air).
▪ Only use R32 when adding refrigerant.
▪ Only use installation tools (e.g. manifold gauge set) that
are exclusively used for R32 installations to withstand
the pressure and to prevent foreign materials (e.g.
mineral oils and moisture) from mixing into the system.
▪ Install the piping so that the flare is NOT subjected to
mechanical stress.
▪ Protect the piping as described in the following table to
prevent dirt, liquid or dust from entering the piping.
▪ Use caution when passing copper tubes through walls
(see figure below).
Unit
Installation period
Outdoor unit
>1 month
<1 month
Indoor unit
Regardless of the
period
INFORMATION
Do NOT open the refrigerant stop valve before checking
the refrigerant piping. When you need to charge additional
refrigerant it is recommended to open the refrigerant stop
valve after charging.
Daikin hybrid for multi heat pump – heat pump module
Protection method
Pinch the pipe
Pinch or tape the pipe
CHYHBH05+08AA + EHYKOMB33A
4P471761-1A – 2017.10
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