REMKO LWM IM 300, Инструкция по эксплуатации и установке, Страница: 16 / 40

Hydraulic circuit diagram
Functions: Heating/cooling and hot water, operating mode: monoenergetic
This hydraulic cycle diagram serves solely to assist in planning activities;
the customer-provided hydraulic system on site must be planned and installed by the installation contractor!
A
C
B
2 1 3
Fig. 7: Example hydraulic diagram
A: Heat pump
B: Indoor unit LWM 300 IM
C: External probe
1: Unmixed cycle
2: Cold water
3: Hot water
LWM IM 300 compact heat pump models are ideal for use in new construction, where the heat pump is the
sole heat generator. In an emergency, an electr. booster heater (monoenergetic variant) can be switched on
by the Smart Control.
The indoor unit consists of an enamelled 300 l drinking water storage tank of the EWS series. In addition, a
3-way changeover valve and an electric bypass valve are installed.
The Smart-Control installed in the indoor unit switches all electrical components. Due to the pre-installed
components, considerable assembly time is saved.
The highly efficient primary pump in the outdoor unit [A] can be used as a heating cycle pump and its speed
is regulated according to requirements. There is a pressure drop present on site (see technical data). If the
pressure losses on site exceed this, a separate storage tank, e.g. REMKO KPS, must be used as a hydraulic
compensator. Then a REMKO heating cycle group unmixed, type HGU, and two mixed heating cycle groups,
type HGM, are available. Moreover, the hot water and cold water supply connections are all connected to the
indoor unit on the top.
A circulation line can optionally be connected to the storage tank.
So that the heat pump can efficiently and smoothly supply the heating water system directly (without buffer
tank), the following basic prerequisites must be fulfilled:
n The heating system must be able to be operated with an inlet temperature (e.g. only floor heating)
n The maximum pressure drop in the heating system must not be exceeded
n A minimum water flow volume of 20 l/KW must be assured. If this is not possible, then a valve must be
installed at a suitable location (last heating manifold)
n The pipe cross sections of the lines from the heat pump to the heating circuit manifolds shall not be
reduced
n The min. water volume of 5 l/kW cooling capacity with active cooling must be observed
REMKO LWM series
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