Carrier Pro-Dialog CONTROL 4 User Manual download pdf (Page 17)



     

    

    

Cooling csp 1 - - - Cooling setpoint 1

Cooling csp 2 - - - Cooling setpoint 2

Cooling auto Activated Open Unoccupied Ice storage setpoint

Cooling auto Activated Closed Unoccupied Cooling setpoint 2

Cooling auto - - Occupied Cooling setpoint 1

Cooling auto Deactivated - Unoccupied Heating setpoint 2

Heating hsp 1 - - - Heating setpoint 1

Heating hsp 2 - - - Heating setpoint 2

Heating auto - - Occupied Heating setpoint 1

Heating auto - - Unoccupied Heating setpoint 2



     

    

    

Cooling csp control - - - Control setpoint

Cooling - - - csp 1 (open) Cooling setpoint 1

Cooling - - - csp 2 (closed) Cooling setpoint 2

Cooling - Activated - Open Cooling setpoint 1

Cooling - Activated Open Closed Ice storage setpoint

Cooling - Activated Closed Closed Cooling setpoint 2

Heating - - - Open Heating setpoint 1

Heating - - - Closed Heating setpoint 2



     

    

    

Cooling - - - Occupied Cooling setpoint 1

Cooling - - - Unoccupied Cooling setpoint 2

Cooling - Activated Open Unoccupied Ice storage setpoint

Cooling - Activated Closed Unoccupied Cooling setpoint 2

Heating - - - Occupied Heating setpoint 1

Heating - - - Unoccupied Heating setpoint 2

* Only with energy management option

5.6.2 - Reset

Reset means the active setpoint is modiﬁed so that less

machine capacity is required (in cooling mode the setpoint

is increased, in heating mode it is decreased). This modiﬁca-

tion is in general a reaction to a drop in the load. For the

Pro-Dialog control system, the reset source can be con-

ﬁgured in the menu Status => User: it can be provided

either by the outdoor temperature (gives a measure of the

load trends for the building) or by the return water tempe-

rature (∆T - gives an average building load) or by the reset

setpoint (only available with the energy management

option). In response to a drop in outdoor temperature or

to a drop in ∆T, the cooling setpoint is normally reset

upwards to optimise unit performance:

In the three cases the reset parameters, i.e. slope, source and

maximum value, are conﬁgurable in the Setpoint menu.

Reset is a linear function based on three parameters.

• A reference at which reset is zero (outdoor temperature

or ∆T - no reset value).

• A reference at which reset is maximum (outdoor tem-

perature or ∆T - full reset value).

• The maximum reset value.







A Maximum reset value

B OATorΔTforzeroreset

C OATorΔTforfullreset

D Building load

Reset value

Outdoor temperature (OAT)

EvaporatorΔT

% Building load

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