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.
