User manual

Parameter Meaning

COOL.HYST.RS

LOW

This setting is available only if ROOM SENSOR is activated

The compressor is stopped if the temperature from the room sensors drops below the desired temperature mi-

nus the value set in COOL.HYST.RS LOW

Default setting: +1°C

COOL.HYST.RS

HIGH

This setting is available only if ROOM SENSOR is activated

The compressor is started when the temperature rises above the desired temperature plus the value set in

COOL.HYST.RS HIGH .

Default setting: +1°C

4.9 Distribution circuits

The only use for a mixing valve is in a heating system with an external heat source (an oil burner or equiva-

lent) or where there are more than one heating circuits, for example a mix of radiator and underfloor heating.

There are three available mixing valve options:

Mixing valve (Activation, see chapter "Activate the external auxiliary heater in Atec Standard")

Distribution circuit (DISTR. CIRCUIT) 1

Distribution circuit (DISTR. CIRCUIT) 2

The mixing valve is used between the heat pump, an external auxiliary heater (may be an oil burner or equivalent) and the heating

system. The purpose of this valve is to mix cold water into the heated water from the external auxiliary heater (on/off heater) to ensure

that the temperature out on the heating system is not too high. The control system in the heat pump controls the mixing of hot and cold

water out on the heating system.

Distribution circuits 1 and 2 are used where there are more than one heating circuit, for example a mix of radiator and underfloor

heating. The purpose of these distribution circuits are to supply a preset temperature to each one of the heating circuits.

Activating DISTR. CIRCUIT 1

The following settings are made in the Service Menu. If not already in the Service Menu, enter the Service Menu by pressing and holding

left (<) arrow for at least 5 seconds. Use + or – to move up and down in the menu.

Activating distribution circuit 1 in the SERVICE menu:

SERVICE

INSTALLATION

SYSTEM

DISTR. CIRCUIT 1

HEAT CURVE or CONSTANT TEMP

When HEAT CURVE is selected, the distribution circuit con-

trols to the set heat curve.

When CONSTANT TEMP is selected, distribution circuit con-

trols a constant temperature regardless of outdoor tempera-

ture.

Press left arrow several times to exit the Service Menu

DISTR. CIRCUIT 2 requires expansion card

Commissioning

VIGFH102 Danfoss Heating Solutions