Lampoassa VMI 6-17 Instructions For Use, Installation And Maintenance Download

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USER MANUAL

Use the button in the bottom left corner to return to the home screen. Use the arrow button in the bottom right corner to return to previous screen.

For instructions screen, press the ‘i’ button in the top right corner. In case of operation faults, an alarm button is displayed on the top bar.

water-related hazards. In general, the compressor is controlled according
to the minimum setting of the storage tank lower part.

In summer, when there is no need for heating (with the exception of
humid rooms), the compressor is seldom on and there is less superheat

ing for domestic hot water production. In such a case the storage tank
upper part and lower part temperatures are close to each other.

3.5.2. Adjustment curves

Heat distribution circuits (HD) are controlled by a seven-point adjust

ment curve. Depending on the connections, the control system controls
1-3 heat distribution circuits or 1-2 heat distribution circuits and domes

tic hot water temperature. In the Adjustment curves menu, the values of
all heat distribution circuits can be changed separately to meet the heat

ing water temperature (supply water) at a certain outdoor temperature.

Exemplary floor heating adjustment curve (factory setting) °C*

Outdoor temperature

-20

-13

-7

+13

+20

Heating water temperature

+32

+31

+29

+27

+25

+23

+21

Exemplary radiator heating adjustment curve °C*

Outdoor temperature

-20

-13

-7

+13

+20

Heating water tempe53

+48

+42 +36 +30 +25

+21

The factory-set adjustment curve is suitable for floor heating. The adjust

ment curve values should be specified during the first year; they could be
changed as follows, for example: If the indoor temperature feels too chilly
while the outdoor temperature is -10 °C, the supply water set value can
be increased a little at the outdoor temperature points -13 °C and -7 °C.
Monitor the influence of the adjustment on room temperature for at least
24 hours before making any further modifications in adjustment curve
set values. When using radiator heating temperature change is quicker.

* Conditions in Finland.

pumps and 60 °C (bottom section) / 85 °C (top section) in case of part-
power geothermal heat pumps.

The value Correction indicates the temperature as corrected by the Timer
function, Home/Away function, Domestic water boost function, or auto

matic heat distribution circuit correction.

The storage tank temperature is a decisive factor in compressor starting
and stopping. The minimum value programs compressor starting at the
storage tank’s target temperature. The maximum value programs com

pressor stopping at the storage tank’s target temperature.

The storage tank is heated by the compressor. If the target temperature
cannot be reached in a certain time (1...24 h), it is presumed that there
is something wrong with the compressor and the compressor is turned
off. In such cases, the storage tank is heated by the electric heating ele

ment. The default set value for this function is 12 h. If the electric heat

ing element is switched on, the following warning is displayed on the
control panel display: Storage tank temperature not achieved in set time.
Electric heating element has been switched on. For more information on
programming the time, see menu Set values. NOTE! Electric heating is
used only as back-up!

Maximum annual ground source heat pump efficiency can be achieved if
the storage tank temperature is kept at an optimal level. The ground rule
is that the storage tank set values must be kept at the lowest possible
level, since it allows the best annual efficiency.

In winter, when the need for heating is larger, the set value for the storage
tank bottom section should be programmed in relation to the supply
water temperature. The temperature of the storage tank upper part
increases after a long period of use and the threshold value for the com

pressor to run is 90 °C. This is due to the superheating properties of the
storage tank structure. Because of this, the domestic hot water tempera

ture limiting function (option) can be used in order to avoid potential hot