4.5.4 - Description of the Setpoints menu

SETPOINTS MENU [2]

ITEM

FORMAT

UNITS

RANGE

COMMENTS

0

±nn.n

°C

See table below

This item lets you display and modify Cooling setpoint 1*

1

±nn.n

°C

See table below

This item lets you display and modify Cooling setpoint 2*

2

nnn

°C

See table below

This item lets you display and modify Heating setpoint*, only displayed for heat pumps.

3 [1]

nnn

°C

See table below

This item lets you display and modify the condensing setpoint*. It is used by the control to regulate the fan

 

 

 

 

stages or a variable-speed fan (air-cooled units) or the condenser water valve control (water-cooled

 

 

 

 

units), if the unit is not in heat reclaim mode.

 

 

 

 

 

4 [1]

nnn

°C

See table below

This item lets you display and modify the heat reclaim setpoint*. As item 3, this is used for condensing

 

 

 

 

setpoint control.

 

 

 

 

 

5

nnn

%

0 to 100

Capacity limit setpoint. Limitation by volt-free contact. This item is used to define the maximum capacity

 

 

 

 

that the unit is authorised to use, if the capacity limit contact activate the limit. See section 5.8.

6 [1]

±nn.n

°C/min

0.1 to 1.1

Cooling ramp loading rate. This parameter is only accessible if the ramp function is validated in the User

 

 

 

 

Configuration 1 menu. This item refers to the maximum rate of temperature rise in °C in the water heat

 

 

 

 

exchanger in cooling mode. When capacity loading is effectively limited by the ramp, mode 11 is active.

7 [1]

±nn.n

°C/min

0.1 to 1.1

Heating ramp loading rate. This parameter is only accessible if the ramp function is validated in the User

 

 

 

 

Configuration 1 menu. This item refers to the maximum rate of temperature drop in °C in the water heat

 

 

 

 

exchanger in heating mode. When capacity loading is effectively limited by the ramp, mode 11 is active.

 

 

 

 

 

8 [1]

±nn.n

[3]

See table below

Zero reset threshold, cooling mode**

 

 

 

 

 

9 [1]

±nn.n

[3]

See table below

Full reset threshold, cooling mode**

 

 

 

 

 

10 [1]

±nn.n

°C

See table below

Full reset value, cooling mode**

 

 

 

 

 

11 [1]

±nn.n

[3]

See table below

Zero reset threshold, heating mode**

 

 

 

 

 

12 [1]

±nn.n

[3]

See table below

Full reset threshold, heating mode**

 

 

 

 

 

13 [1]

±nn.n

°C

-16 to 16

Full reset value, heating mode**

 

 

 

 

 

Legend

1This item is displayed in certain unit configurations only.

2All points contained in this table can be modified.

*Those setpoints can be used for entering or leaving water temperature control. By default the unit controls the evaporator entering fluid temperature. Leaving fluid temperature control requires a parameter modification in the Service Configuration menu.

**These parameters are only accessible when reset based on OAT or delta T has been selected in the User Configuration 1 menu. See section 4.5.7.3.

SETPOINT

DESCRIPTION

CONTROL FOR

CONTROL FOR

 

 

LEAVING WATER

ENTERING WATER

Cooling

Minimum setpoint

 

 

 

- Water

3.3°C

9.3°C

 

- Medium Brine

-10°C

-4°C

 

- Low Brine

-20°C

-14°C

 

Maximum setpoint

 

 

 

 

 

 

Heating

Maximum setpoint

MCT - 4.0

MCT - 10.0

 

 

 

 

Note:

Three setpoint reset configuration modes can be selected in the Client1 menu: 1 Reset using an external 0-10 V d.c. signal

2 Reset using Delta T

3 Reset by external temperature sensor (air-cooled units only)

The items with zero reset or maximum reset are based on these three modes.

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Carrier 30GK manual Description of the Setpoints menu, Setpoints Menu Format Units Range Comments

30GK specifications

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