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The pump outlet pipe should discharge to a suitable internal foul
water discharge point such as an internal soil and vent stack,
internal kitchen, bathroom waste pipe, or washing machine waste
pipe. A suitable permanent connection to the foul waste pipe should
be used.
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
9.5.2
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 sections 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.
9.6
Connecting the water piping
9.6.1
About connecting the water piping
Before connecting the water piping
Make sure the outdoor unit and gas boiler are mounted.
Typical workflow
Connecting the water piping typically consists of the following
stages:
1
Connecting the water piping of the outdoor unit.
2
Providing drainage for the pressure relief valve.
3
Connecting the water piping of the gas boiler.
4
Protecting the water circuit against freezing.
5
Filling the space heating circuit.
6
Filling the domestic water circuit of the gas boiler.
7
Filling the domestic hot water tank (if applicable).
8
Insulating the water piping.
EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1A – 2019.05
b
c
≥75 mm
d
9.6.2
Precautions when connecting the water
piping
INFORMATION
Also read the precautions and requirements in the
following chapters:
▪ General safety precautions
▪ Preparation
9.6.3
Connecting the water piping of the
outdoor unit
To connect the water piping
NOTICE
In case of old heating installations, it is recommended to
use a dirt separator. Dirt or sediment from the heating
installation can damage the unit and reduce its lifetime.
NOTICE
Do NOT use excessive force when connecting the piping.
Deformation of the piping can cause malfunctioning of the
unit. Make sure that the tightening torque does NOT
exceed 30 N•m.
NOTICE
Shut-off valves. We recommend to connect shut-off
valves to facilitate service and maintenance. They are
available as option (EKBALLV1). If you do not install shut-
off valves, make sure to install air purge valves on the
water inlet and outlet.
NOTICE
Drain/fill point. Foresee a drain/fill point to drain or fill the
space heating circuit. The fill/drain point can be:
▪ Field supplied
▪ In case of NHY2KOMB28+32AA gas boiler: Part of
option EKFL1A (filling loop kit)
▪ In case of third-party gas boiler: Part of the existing
installation
NOTICE
Do NOT install valves to shut down the entire emitter
system (radiators, floor heating loops, fan coil units, ...)
instantly if this can result in an immediate short circuit of
the water flow between the outlet and the inlet of the unit
(for example via a bypass valve). This may trigger an error.
a
Water inlet (G1")(coming from the heat emitters)
9 Installation
a
b
c1
c2
c3
Installer reference guide
35
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