4
BASIC UNIT
The basic unit consists of the heat pump for
indoor installation, covering hood and basic
control and is delivered ready for installation. The
refrigerating circuit is filled with the refrigerant
R407C. The covering hood is lined with sound
insulating material.
The basic control contains all components that
are required for heat pump operation. The power
cable and the load cable (accessories) between
heat pump and basic control have to be installed
by the client.
The well pump, that is also provided by the client,
has to be interfaced with the basic control. Make
sure that the rating of the motor protector istalled
by the client is sufficient for the pump in use.
1 2
3
4
5
6
7
1) Condensor
5) Flow switch
2) Liquefier
6) Terminalbox
3) Evaporator
7) Filter dryer
4) Dirt trap
The working fluid R407C is free of CFC,
does not disturb ozone and is non-combustible.
The covering hood can not be painted.
3
APPLICABILITY OF THE HEAT PUMP
BASIC UNIT
APPLICABILITY OF THE
HEAT PUMP
2.1 Field of application
The water-water heat pump can be used in
existing or new heating plant installations. Water
is used as the heat transfer medium. The water
may be supplied from a well or similar sources.
The well water must be of the water
quality specified.
Under normal conditions an intermediate circuit
has to be provided. If the system is to operated
without an intermediate circuit it is, independent
of the leagl requirements, necessary to perform
a water analysis in order to be able to detzermine
the compatability of the ground water with the
evaporator of the heat pump (refer to the project
designing and installation manual for heating
heat pumps).
2.2 Mode of operation
A well pump feeds the water to the evaporator of
the heat pump. There its thermal content is
transferred to the working fluid (refrigerant) in the
refrigeration circuit.
Then the working fluid is sucked into the elec-
trically powered condensor, where it is
condensed , i.e. "pumped" to a higher tempera-
ture level. How-ever, the electric energy used to
drive this process is not lost but is also transferred
to the working fluid.
Finally, the working fluid reaches the liquefier unit
where its thermal energy is transferred to the
water circulating through the heating water
system. Depending on the operating point, the
temperature in the heating water system may rise
up to 55 °C.
2
CAUTION !
CAUTION !
CAUTION !
Summary of Contents for WI 40CG
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