Setting Circulating Pump Unmixed Heating Circuit; Control Types; Setting Of The Characteristic Curve; Cleaning / Maintenance - Dimplex HPK 300 Instructions D'installation Et D'utilisation

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9 Setting circulating
pump unmixed heating
circuit

9.1 Control types

The pump enables 6 pre-set speeds to be set:
 three proportional pressure levels (PP)
 three constant pressure levels (CP)
9.2 Setting of the characteristic
curve
Characteristic curve see Fig.2.2 on pag. IV
Flashes quickly
,,, ,,, ,, ,, ,
Flashes quickly
,,, ,,, ,, ,, ,
Flashes quickly
,,, ,,, ,, ,, ,
Flashes slowly
,,, ,,, ,, ,, ,
Flashes slowly
,,, ,,, ,, ,, ,
Flashes slowly
,,, ,,, ,, ,, ,
Fig. 9.1:Setting of the characteristic curve
 Press the button on the pump electronics box for 2
seconds
 Pump enters setting mode
 LED starts to flash
 The setting changes each time the button is pressed (see
Fig.9.1 on pag. 6)
 LED 1-2 and 3 are permanently on, i.e. the characteristic
curve and type of control can be changed
 Flashing mode by pressing the button again
 Flashing quickly = proportional pressure curve
 Flashing slowly = constant pressure curve
 If the button is not pressed for 10 seconds
 the setting is applied
 Pump returns to mode operation
Only one LED is permanently on (LED 1, 2 or 3)
Pump is in the mode operation and runs with the pre-set charac-
teristic curve
EN-6

10 Cleaning / maintenance

10.1 Maintenance
To protect the cover, avoid leaning anything against the device or
putting objects on the device. External parts can be wiped clean
with a damp cloth and domestic cleaner.
NOTE
Never use cleaning agents containing sand, soda, acid or chloride, as
these can damage the surfaces.

10.2 Cleaning the heating system

The ingress of oxygen into the heating water circuit may result in
the formation of oxidation products (rust), particularly if steel
components are used. These enter the heating system via the
valves, the circulating pumps and/or plastic pipes. A diffusion-re-
sistant installation is therefore essential, especially with regard to
the piping of underfloor heating systems.
PP1
Residue from lubricants and sealants may also contaminate the
heating water.
PP2
In the event of severe contamination leading to a reduction in the
performance of the liquefier in the heat pump, the system must
PP3
be cleaned by a heating technician.
Based on current information, we recommend using a 5% phos-
CP1
phoric acid solution for cleaning purposes. However, if cleaning
needs to be performed more frequently, a 5% formic acid solu-
CP2 tion should be used.
In both cases, the cleaning fluid should be at room temperature.
We recommend flushing the heat exchanger in the direction op-
CP3
posite to the normal flow direction.
To prevent acidic cleaning agents from entering the heating sys-
tem circuit, we recommend connecting the flushing device di-
rectly to the flow and return of the liquefier of the heat pump.
It is then important that the system be thoroughly flushed using
appropriate neutralising agents to prevent any damage from
being caused by cleaning agent residue remaining in the system.
Acids must be used with care and the regulations of the employ-
ers liability insurance associations must be adhered to.
The instructions of the cleaning agent manufacturer must always
be observed.
452162.66.07 · FD 9611
HPK 300