Rotex RHYKOMB33AA, Инструкция по установке и эксплуатации

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7 Installation
Installation and operation manual
12
RHYKOMB33AA
ROTEX HPU hybrid gas boiler module
4P353068-1 – 2013.07
Ø22 mm
c
≥75 mm
a
b
d
e
a
Condensate discharge from boiler
b
Soil and vent stack
c
75 mm waste trap and air break
d
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 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.
7.4 Connecting the water piping
7.4.1 Connecting the water piping of the gas
boiler
To connect the water piping for domestic hot
water
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.
3
Connect the hot water connection (Ø15 mm).
4
Connect the main cold water connection (Ø15 mm).
DANGER: RISK OF BURNING
In case of high leaving water set points for space heating
(either a high fixed set point or a high weather-dependent
set point at low ambient temperatures), the heat exchanger
of the boiler can be very hot, for example 70°C.
Beware that in case of a tapping demand, the water can
initially have this high temperature instead of the requested
lower temperature, for example 50°C.
In this case, it is recommended to install a thermostatic
valve to prevent scalding. This can be done according to
the schematics below.
a
e
c
d
b
a
=boiler,
b
=DHW from boiler,
c
=cold water inlet,
d
=
shower,
e
=thermostatic valve (field supply)
Flow resistance graph for appliance domestic hot
water circuit
0.2 0
1
3
5
7
9
11
13
15
0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
bar
l/min
To connect the water piping for space heating
Use the straight brass fitting connections (accessory of the heat
pump unit).
1
The space heating piping of the boiler will be connected to the
indoor unit.
2
Install the straight brass fitting connections so that they
perfectly match the connection of both modules.
3
Tighten the straight brass fitting connections.