LEAVING WATER TEMPERATURE CONTROL

SETPOINT - °C

R-22/R-407C

Minimum cooling value

 

Water

5.0

Medium brine

0.0

Brine

-10.0

Maximum cooling value

20.0

Feedback setpoint, cooling

6.0

Minimum heating value

20.6

Maximum heating value

56.1

Feedback setpoint heating

48.0

 

ENTERING WATER TEMPERATURE CONTROL

 

 

SETPOINT - °C

R-22/R-407C

 

 

Minimum cooling value

 

Water

10.0

Medium brine

6.1

Brine

-3.9

Maximum cooling value

26.1

Feedback setpoint, cooling

12.0

Minimum heating value

14.4

Maximum heating value

50.0

Feedback setpoint heating

42.0

RESET THRESHOLDS IN COOLING OR HEATING MODE

Reset threshold

Zero

Full

Reset based on outdoor

-10 to 51 °C

-10 to 51 °C

air temperature

 

 

Reset based on

0 to 11.1 °C

0 to 11.1 °C

Delta T

 

 

 

 

 

4.3.9 - Description of the Inputs menu

INPUTS MENU [2]

ITEM

FORMAT

UNITS

COMMENTS

 

 

 

0

oPEn/CLoS

-

Remote contact 1 status.

 

 

 

 

 

 

If the auto cooling/heating changeover function is not selected (User Configuration 1), this contact is used to start and

 

 

 

stop the unit. If the auto cooling/heating changeover function is selected, this contact is multiplexed with contact 2 to

 

 

 

permit starting and stopping the unit and the selection of heating/cooling/auto. This contact is only valid, if the unit is in

 

 

 

the remote operating control (rEM) mode. See section 3.6 for the description of the connections of this contact.

 

 

 

 

 

 

 

1 [1]

oPEn/CLoS

-

Remote contact 2 status.

 

 

 

 

 

 

If the auto cooling/heating changeover function is not selected (User Configuration 1), this contact is used to select the

 

 

 

heating or cooling mode. If the auto cooling/heating changeover function is selected, this contact is multiplexed with

 

 

 

contact 1 to permit starting and stopping the unit and the selection of heating/cooling/auto. This contact is only valid, if

 

 

 

the unit is in the remote operating control (rEM) mode. See section 3.6 for the description of the connections of this

 

 

 

contact.

 

 

 

2

oPEn/CLoS

-

Remote contact 3 status.

 

 

 

 

 

 

The operation of this contact depends on the unit type.

 

 

 

 

 

Single-circuit unit: this contact can be used either to limit unit demand or to select a setpoint, as described in User

 

 

 

Configuration. If this contact is used for selecting a setpoint it is only active if the unit is in the remote operating control

 

 

 

mode. If the contact is used to limit the demand of the unit, it is active in all operating types.

 

 

 

 

Open contact: unit capacity is not limited or unit control is based on setpoint 1.

 

 

 

 

Closed contact: unit capacity is limited at limit setpoint 1 or unit control is based on setpoint 2.

 

 

 

 

See section 4.3.11.3 for the configuration of contact 3 - section 5.6.1 for the description of the setpoint selection -

 

 

 

section 5.7 for the description of the demand limit function and 3.6 for the description of the connection of contact 3 for

 

 

 

single-circuit units.

 

 

 

 

 

 

Dual-circuit units: this contact is multiplexed with contact 4 to permit the selection of a demand limit point. This

 

 

 

contact is active in all operating types. See section 3.6.5 for the description of this contact and section 5.7 for the

 

 

 

description of the demand limit function.

 

 

 

 

 

 

 

 

 

 

3

oPEn/CLoS

-

Remote contact 4 status.

 

 

 

 

 

 

This contact is only used for dual-circuit units: this contact is multiplexed with contact 3 to permit selection of a

 

 

 

demand limit value. This contact is active in all operating types. See section 3.6.5 for the description of this contact

 

 

 

and section 5.7 for the description of the demand limit function.

 

 

 

 

 

 

 

 

 

4 [1]

oPEn/CLoS

-

Remote contact 5 status.

 

 

 

 

 

 

This contact is only used for dual-circuit units: this contact is multiplexed with contact 6 to permit selection of a

 

 

 

setpoint. This contact is only active in the remote operating control mode. See section 3.6.6 for the description of this

 

 

 

contact and section 5.6.1 for the description of the setpoint selection function.

 

5 [1]

oPEn/CLoS

-

Remote contact 6 status.

 

 

 

 

 

 

This contact is only used for dual-circuit units: this contact is multiplexed with contact 5 to permit selection of a

 

 

 

setpoint. This contact is only active in the remote operating control mode. See section 3.6.6 for the description of this

 

 

 

contact and section 5.6.1 for the description of the setpoint selection function.

 

 

 

 

 

6 [1]

oPEn/CLoS

-

Interlock status. When this contact opens the unit stops or is prevented from starting and an alarm is created. This

 

 

 

contact is used to control the water flow. In addition, a customer safety device can be connected in series with this

 

 

 

contact (see section 3.6).

 

 

 

7

oPEn/CLoS

-

Water pump run contact status. When this contact opens while an evaporator pump has received a command to be

 

 

 

on then a pump failure alarm is tripped.

 

 

 

8 [1]

b1b2b3

-

Compressor feedback contacts, circuit A

b1 = feedback A1

b2 = feedback A2

b3 = feedback A3

9 [1]

b1b2b3

-

Compressor feedback contacts, circuit B

b1 = feedback B1

b2 = feedback B2

b3 = feedback B3

1This item is displayed in certain unit configurations only

2Access to this menu is read-only.

18

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Carrier 30RA/RH, 30RY/RYH manual Description of the Inputs menu, Leaving Water Temperature Control Setpoint C

30RY/RYH, 30RA/RH specifications

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