External Connections; Connecting Water Piping; Connecting The Water Piping Of The Gas Boiler - Daikin EHYKOMB33AA Installation And Operation Manual

7 Installation
b
a
Ø22 mm
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
100 mm
c
Ø22 mm
≥75 mm
d
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
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.
a
Ø22 mm
e
a Condensate discharge from boiler
b Soil and vent stack
c Sink or basin with integrated overflow
Installation and operation manual
14
c
b
c
≥75 mm
d
d 75 mm waste trap and air break
e Condensate pump
7.3.2

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.
7.4

Connecting water piping

7.4.1 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
a Domestic hot water outlet
b Cold water inlet
c Pressure relief valve (field supply)
2 Install a pressure relief valve according to local and national
regulations (if required).
3 Connect the hot water connection (Ø15 mm).
4 Connect the main cold water connection (Ø15 mm).
DANGER: RISK OF BURNING/SCALDING
In case of high leaving water setpoints for space heating
(either a high fixed setpoint or a high weather-dependent
setpoint at low ambient temperatures), the heat exchanger
of the boiler can be heated up to temperatures higher than
60°C.
In case of a tapping demand, it is possible that a small
volume of water tapping (<0.3 l) has a temperature higher
than 60°C.
Daikin Altherma hybrid heat pump – gas boiler module
c
EHYKOMB33A
4P353067-1K – 2020.10