Bedienungsanleitung Worcester Greenstore Ground Source (Seite 14 von 28) (Englisch)

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SETTINGS

6 720 802 172 (2012/06)14

>>> Room temperature exception

▶ Set the temperature that should apply as programmed temperature in

the program.

The menu is displayed only if Program 1or Program 2has been

selected.

>>> Copy to all heating circuits

▶Select Yes to have the same control for all installed circuits.

The menu is displayed only under Circuit 1.

Room temperature program when there is no room controller:

>> Room temperature program

>>> Active program

>>> View/edit active program

The same as when there is a room controller, see above.

>>> Room temperature normal

▶ Set the measured value in the room.

The indicated value is used by temperature programs to calculate the

difference between normal and exceptional temperature.

>>> Temperature increase/decrease

▶ Use this function to adjust the room temperature so that the normal

room temperature (see the previous menu) becomes the desired

temperature.

▶ Use this function to simply increase or decrease the heat when there

are no room controllers.

– – gives approx. 1 °C lower room temperature.

– gives approx. 0.5 °C lower room temperature.

+ gives approx. 0.5 °C higher room temperature.

++ gives approx. 1 °C higher room temperature.

> Room temperature influence

▶ Set how much a 1 K ( °C) difference in room temperature should

influence the set point value for the flow temperature.

Example: at a 2 K ( °C) deviation from the set room temperature, the

set point value for the flow temperature is changed by 6 K ( °C) (2 K

deviation * factor 3 = 6 K).

>>> Room temperature exception

The same as when there is a room controller, see above.

>>> Copy to all heating circuits

The same as when there is a room controller, see above.

> Circuit 2, 3... (Circuit 3 option)

Circuit 2, 3... has the same settings options as Circuit 1, (

Chapter 13.2).

13.2.1 SET POINT

The heating circuit's set point value is the temperature of the flow that

the heat pump attempts to maintain. Sometimes, the measured actual

value fluctuates a bit upward and downward depending on changes in

the outdoor temperature or a large hot water demand.

The set point value is normally based on:

• Current curve value (the flow temperature at the current outdoor

temperature according to the applicable heat curve).

• Current curve influence through:

–Room sensor (room controller)

–Holiday

–Active program

–External control

SET POINT VALUE CALCULATION

The set point value for the heating circuit is the current curve value

adjusted with active curve influence, if any such exists.

Priority order for curve influence is:

•External control

•Active program

•Holiday

Only one of these can be active. How big the influence should be and

when to exercise it is set in the respective function.

FIXED SET POINT VALUE

A fixed set point value (not curve-based) applies in the event of:

• External set point value. The set point value is determined according

to input signal 0-10V where 1V is 10 °C and 10V is 80 °C (0V triggers

an alarm).

SET POINT VALUE LIMITATION

The calculated set point value is always checked against the permitted

temperature limits.

The applicable set point value T1 for Circuit 1 and the measured actual

value for T1 are used to activate and deactivate the heat demand.

The following applies to Circuit 2, 3...: When the actual value for the

mixed circuit's T1 is low in relation to the set point value, more heating

water is shunted into the circuit so as to maintain the set point value.

If the flow temperature has been below the set point value for a certain

period of time, there is heat demand and the compressor produces heat

before there is a too significant temperature reduction indoors. This

happens until the flow temperature is a couple of degrees higher than

Factory setting 17.0 °C

Lowest value 10.0 °C

Highest value 30.0 °C

Table 14 Room temperature, exception

Factory setting No

Alternative No/Yes

Table 15 All circuits

Factory setting 20.0 °C

Lowest value 10.0 °C

Highest value 35.0 °C

Table 16 Room temperature, normal

Factory setting =

Alternative – – , – , =, +, ++

Table 17 Room temperature increase/decrease

Factory setting 3.0

Lowest value 0.0

Highest value 10.0

Table 18 Room temperature influence

It always takes some time for a change of a heating

setting, e.g. an increase or decrease in room

temperature, to apply. The same applies in the event of a

quick change of the outdoor temperature. This is why

you should always wait for at least 24 hours before

making a new change.

The set point value specified by the customer/installer is

most often the room temperature, which is recalculated

by the control unit into a corresponding flow

temperature set point value. Under normal conditions, 1

K ( °C) in room temperature corresponds to approx. 3 K

( °C) in flow temperature.

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