6 Installation
Installation and operation manual
13
EHY32AA
Daikin Altherma hybrid monobloc – Gas boiler module
4P538953-1 – 2018.06
NOTICE
It is recommended that any external condensate pipe is
insulated and increased to Ø32 mm in order to prevent the
condensate from freezing.
6.4
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.
6.4.1
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
6.4.2
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.
6.5
Connecting the water piping
6.5.1
Connecting the water piping of the gas
boiler
To connect the water piping for domestic hot
water (not applicable for Switzerland)
1
Flush the installation thoroughly to clean.
a
b
c
a
Domestic hot water outlet
