Bosch WORCESTER GREENSTORE User Manual download pdf (Page 13)

The heat pump is in standby mode.

The heat pump is producing hot water. The present temperature and

temperature at which the heat pump will stop are shown. Note that the stop

temperature is read at the bottom of the hot water cylinder therefore, the

domestic hot water is a few degrees warmer in the top of the cylinder.

The heat pump and electrical heater are running.

The heat pump has received signals that it should produce heating. It now

waits for the restart time to countdown to zero.

Return to the initial menu by pressing one of the buttons or turn the dial.

Basic functions - Customer level 1

Set the heating

It is easy to set the heating level on the heat pump. However, before it is

explained how to do this it is important to understand the relation between

the outdoor temperature, return temperature and heat curve slope. The

easiest way to explain the relation is with a heat curve.

Heat curve

The heat curve is used to set the indoor temperature. The heat pump is

controlled by the outdoor temperature. When the weather becomes colder,

the heat pump ensures more heating is produced automatically.

Return temperature:

The return temperature is the temperature of the water that returns to the

heat pump from the radiators/underﬂ oor heating. The ﬂ ow temperature

of the heat pump is normally 7-10ºC higher than the return temperature.

For instance, when the outdoor temperature is -10ºC and curve 4 is set, the

pump attempts to keep the return water at approximately 40ºC.

Outdoor temperature:

The outdoor temperature determines how much heating the heat pump

should produce. A sensor placed outdoors sends signals to the control unit,

which then adjusts the heat pump. The sensor must be ﬁ tted to a North

facing wall outdoors.

Cur ve slope:

The curve slope can be changed to increase or decrease the heating in the

house. The scale is between 0-10.

On delivery the heat pump curve

slope is set to position 4. This means

that the return temperature is +35ºC

when it is 0ºC outdoors.

Note

STANDBY

No rad heat required

No hotwater required

HEAT RAD REQ

Heat pump starts

in 320 seconds

HOTWATER MODE

Heat pump only

Stop temp. 53,0°

Present temp 42,0°

HEAT RAD MODE

Compr. + Add. heat

Stop temp. 45,0°

Present temp 44,0°

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Bosch WORCESTER GREENSTORE User Manual Page 13

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