background image

A

ctuAtor

 

with

 

integrAted

 

regulAtor

, K282

for

 r298 

And

 r298n 

mixing

 

vAlve

0262EN 

May 2013

047U31758

1

ISO

9001

0006/7

ISO

14001

0032A/2

OHSAS

18001

0064L/0

Description

K282 actuator is an actuator that works both as motor and regulator, to 
control the delivery temperature with three way mixing valve.
Thus, K282 actuator can be used on three way valves:
• it controls fixed delivery temperature both heating and cooling, in “stand-
alone” functioning;
• it can carry out the regulation with climatic compensation when heating 
and the fixed regulation with calibration on internal thermohygrometric 
conditions when cooling, in combination with KM203 network controller, 
K365P external sensor, K481 or K483 thermostats and K485 ambient sensor.

Versions and product codes

Technical data

Main features

• M28x1,5 brass ring fixing to valve body.
• Immersion probe for delivery water temperature with bulb, length 47 mm 
and diameter 6 mm, connected to the actuator body.
• Proportional-integral (PI) digital electronic regulator inserted in the actuator 
body.
• Motorized manual control (open ring) of the valve by selecting the opening 
position (from 0% to 100%).
• Stand-alone functioning: manual selection by summer/winter mode 
selector.
• Stand-alone functioning: manual selection of the working set by rotating 
potentiometer with double adjustment scale. Winter mode from 20 °C to 60 
°C; summer mode from 15 °C to 25 °C.
• Bus signal network functioning with KM203 network controller: climatic 
compensation regulation during winter and calibration on internal 
thermohygrometric conditions during summer.

Control elements

The summer/winter mode selector and the rotating potentiometer with 
double adjustment scale to select the fixed set for the delivery temperature 
control are on the frontal side of K282 actuator.
Once summer/winter switching has been made through selector, position 
the rotating potentiometer at the desired set according to the appropriate 
graduated scale: the scale working during the winter is indicated with red 
numbers (range from 20 °C to 60 °C ascending clockwise); the scale working 
during the summer is indicated with blue numbers (range from 15 °C to 25 °C 
ascending anticlockwise).
Both controls are used in stand-alone functioning of the actuator.
When K282 is used in combination with KM203 network controller, both 
manual mode selector and rotating potentiometer are deactivated and their 
use has no effect. In this application, the modification of delivery temperature 
set or summer/winter switching is made by KD300 display.

K282

winter

20°C

25°C

20°C

40°C

60°C

15°C

summer

2

1

3

1  SUMMER/WINTER mode selector

2  RED/GREEN signalling led

3  Rotating potentiometer with double adjustment scale

Product code

Supply

Type

K282X002

24 Vac

With integrated regulator

Product code

K282X002

Type of actuator

Three point floating

Type of regulation

Giacoklima series (KPM20)

Supply tension

24 V; 50/60 Hz

Nominal thrust

120 N 

±

20 %

Max. stroke

6,5 mm

Opening time to max. stroke

85 sec.

Absorbed power

5 VA

Protection level

IP40

Storage temperature range

-34÷55 °C with U.R. non-condensing

Operating temperature range

0÷55 °C with U.R. non-condensing

Electrical connections

cable lenght 1,5 m

(7x 0,14 mm

2

)

Delivery temperature probe

NTC sensor 30 kΩ at 25 °C,

sensor bulb 47 mm long, external Ø 6 mm, 

2x0,22 mm

2

 cable, 1,5 m long,

external Ø = 3 mm,

black external sheath,

self-extinguishing

Rotating potentiometer

WINTER range: 20÷60 °C

SUMMER range: 15÷25 °C

3

4

1

2

1  Delivery temperature probe

2  Multipole cable for electric connections

3  Frontal side and frontal panel of the actuator

4  Ring fixing to valve body

Caution!

In stand-alone functioning of K282 actuator, after summer/winter 
switching through selector, position the rotating potentiometer at 
the desired set according to the appropriate graduated scale.

Summary of Contents for Giacoklima Series

Page 1: ...er winter switching has been made through selector position the rotating potentiometer at the desired set according to the appropriate graduated scale the scale working during the winter is indicated with red numbers range from 20 C to 60 C ascending clockwise the scale working during the summer is indicated with blue numbers range from 15 C to 25 C ascending anticlockwise Both controls are used i...

Page 2: ...tuator and KM203 network controller are transfered through the system bus connection to primary bus by using RT RT and Com terminals In addition the supply for the communication function is carried through the system bus by using V and Com terminals Max 3 K282 actuators can be connected to KM203 network controller 1 2 3 4 6 7 8 2 1 1 2 1 2 3 4 6 7 8 1 Jumper for manual control open ring of the act...

Page 3: ...en the rotating potentiometer is completely rotated anticlockwise the stem of the actuator is protruding 100 and the mixing valve opens the direct way completely when potentiometer is completely rotated clockwise For the manual positioning Remove 24 V supply to K282 actuator Loosen the actuator ring fixing to valve body and unscrew the actuator completely Remove the upper shell of the actuator by ...

Page 4: ...923 372 6 39 0322 923 255 consulenza prodotti giacomini com This pamphlet is merely for information purposes Giacomini S p A retains the right to make modifications for technical or commercial reasons without prior notice to the items described in this pamphlet The information described in this technical pamphlet does not exempt the user from following carefully the existing regulations and norms ...

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