Daikin EHYKOMB33AA2 [30/136] Installation
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Daikin EHYKOMB33AA2 [30/136] Installation

Daikin EHYKOMB33AA2 [30/136] Installation
7 Installation
Installer reference guide
30
EVLQ05+08CAV3 + EHYHBH05AA + EHYHBH/X08AA +
EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1A – 2016.02
7.6 Condensate pipe work
INFORMATION
The condensate discharge system MUST be made of
plastic, no other materials may be used. The discharge
duct MUST have a minimum gradient of 5~20 mm/m.
Condensate discharge via the gutter is NOT allowed due to
risk of frost and the possible damage to the materials.
7.6.1 Internal connections
If possible, the condensate drain pipe should be routed and
terminated so that the condensate drains away from the boiler under
gravity to a suitable internal foul water discharge point such as an
internal soil and vent stack. A suitable permanent connection to the
foul waste pipe should be used.
Ø22 mm
a
b
c
a Condensate discharge from boiler
b Soil and vent stack
c Minimum 450mm and up to 3 storeys
If the first option is NOT possible, an internal kitchen or bathroom
waste pipe, washing machine pipe can be used. Make sure that the
condensate drain pipe is connected downstream of the waste trap.
a
b
c
d
≥75 mm
Ø22 mm
100 mm
a Condensate discharge from boiler
b Soil and vent stack
c Sink or basin with integrate overflow
d 75mm waste trap and air break
Condensate pump
Where gravity discharge to an internal termination is NOT physically
possible or where very long internal runs of drainage pipe would be
required to reach a suitable discharge point, condensate should be
removed by using a proprietary condensate pump (field supply).
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.
Ø22 mm
c
≥75 mm
a
b
d
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
7.6.2 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.
7.7 Connecting the refrigerant piping
7.7.1 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

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