Danfoss REP24CO3 Especificaciones descargar pdf (Pagina 78)

78

The REP range oﬀers 0-10v output

proportional control designed for use

controlling fan coil or chilled ceiling

units or any other system that requires

0-10v proportional control. Available

with various options for manual or auto

fan speed control as well as options for

using motorised or wax ﬁlled actuators,

these thermostats provide a solution

for most heat/cool manual changeover

requirements.

The slower response of wax ﬁlled

actuators compared to the relative

speed of motorised actuators means

that diﬀerent control algorithms are

needed within a thermostat to ensure

accurate temperature control. A simple

DIL switch selection for motorised

or wax at time of installation ensures

accurate and stable control for the

minimum of fuss.

On all models, range and limit locking

are available allowing the installer to

limit or lock the temperature range

of the thermostat (e.g. 18-22ºC),

ideal in public buildings or oﬃce

environments.

Frost protection mode is available in

heating mode. If the dial is turned

down below the 10ºC mark on the dial,

frost protection is activated (indicated

by the right LED turning orange)

meaning that if the temperature drops

below 8ºC the output will engage.

Frost protection is not available in

cooling mode, however, if the dial is

turned below 10ºC in cooling mode

the unit enters standby mode and the

unit is inactive until the dial is turned

above 10ºC again.

Overall the REP range provides a versatile

and eﬃcient solution for almost all

installations requiring 24v input 0-10v

output manual heat/cool changeover

with or without fan control.

REP24 REP24 CO

Application Example

+

-

REP24 REP24CO REP24CO1 REP24CO3

Code No. 087N775000 087N775200 087N775400 087N775600

Temperature Range 10-30°C

Power Output 0-10 Vdc

Power Supply 24 Vac/Vdc +/- 15%

Switching Diﬀerential <1°C

Control Method

P + I

Proportional Band 2°K

Internal Heat/Cool Selection •

Front mounted Heat/Cool

Switch

• • •

Fan Speeds 0 0 1 3

Manual fan speed selector N/A N/A No Yes

Auto/Manual Fan N/A N/A • •

Frost Protection •

Standby (Cooling) •

Motorised or Wax

Actuator Selection

•

Power LED Yes Yes Yes Yes

Output LED Yes Yes Yes Yes

Ambient Operating

Temperature

-10 to +45°C

Dimensions (mm)

85 w x 86 h x 42 d 110w x 90 h x 40 d 110 w x 90 h x 40 d 110 w x 90 h x 40 d

Heat/Cool Thermostats

0-10v Proportional Control

1 2 ... 73 74 75 76 77 78 79 80 81 82 83 84

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