NIBE-BIAWAR HK 200M, Installation Manual

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9
HK 200M
4 Pipe connections
General information
The piping installation must be executed according to
the applicable standards and directives.
HK 200M indoor unit, with NIBE Monoblock outdoor
air heat pump, and NIBE SMO controller form a com
-
plete heating system.
The system can cooperate with a low- and medi-
um-temperature heating system. Recommended
temperature of the heating medium at minimum de-
signed outdoor temperature DOT must not exceed
55°C on supply, and 45°C on return circuit from the
heating system, whereas HK 200M can achieve even
65°C when using a flow-through heating module or
another peak heat source.
Excess medium flowing out of the safety valve must
be discharged via a pipe to a floor drain. The over
-
flow pipe must be slanted at the entire length from the
safety valve, and must be secured against freezing.
In order to achieve maximum system efficiency, we
recommend the installation of HK 200M as close to
the heat pump as possible.
The HK 200M module is not equipped with cut-off
valves, which must be installed outside the indoor
module to make future maintenance easier. The HK
200M module can be connected to the central heat-
ing, cooling, and domestic hot water installation. In-
stall the supplied safety valve and the manometer.
HK 200M is equipped with a diaphragm expansion
vessel for a heating circuit of 10 I. Initial pressure of
the expansion vessel must be set appropriately to
the maximum height (H) between the vessel and the
highest heater, see the drawing. The initial pressure
of 0.5 bar (5 mvp) shall mean maximum permissible
height difference of 5 m.
If the standard initial pressure in the diaphragm ex
-
pansion vessel is too low, it can be raised by filling the
vessel through the valve installed.
Any change to the initial pressure affects the dia-
phragm expansion vessel’s capacity to support the
increase in water volume.
IMPORTANT
All places in the heating system located high must be
equipped with vents.
IMPORTANT
Pipelines must be rinsed before connecting the indoor
module so that possible dirt does not damage its ele-
ments.
IMPORTANT
As long as heating circuits in the system have not been
filed with the heating medium, do not set the switch
(SF1) in the SMO module in position “I” or “ ”. The
compressor in the heat pump and the flow-through
heating module can be damaged.
Capacities of the indoor unit and the
heating system
System requirements
The inner capacity of HK 200M for the purposes of
calculating the diaphragm expansion vessel in the
domestic hot water installation totals 180 l. The ca-
pacity of the diaphragm expansion vessel must con
-
stitute at least 5% total capacity.
Minimum required configuration:
In order to assure correct operation, the capacity of
the heating system must meet the requirements for
the installation. If this condition has not been met, in-
stall an additional buffer tank. (NIBE UKV).
CAUTION
In this case a diaphragm expansion vessel of the
DHW installation must have the capacity of 10l. The
diaphragm expansion vessel at the domestic hot water
installation is not required. It is, however, required to
install a safety valve with opening pressure of 6 bar.
IMPORTANT
All connections require free flow, hence a discharge
valve must be installed.
Chapter 4 | Pipe connections