kotech's room temperature control system
Will lead the way in developing new technologies for a new heating culture.
T&F Control System
T&F Control System

This Control System is a heating system that employs the latest technologies to electronically control and operate boilers.
Under this system, a temperature controller is installed in each room, and the hot-water distributor is installed with an motorizing valve and valve controller.
All the devices are connected electronically.
Then, in accordance with the heating conditions configuredat each room, themotorizing valves and boilers are automatically operated to meet such conditions.

System Configuration

T&F Control System Configuration

KRC-900PL Temperature Controller
KRC-900PL Temperature Controller
Temperature : 5℃ ~ 40℃(Indoor temp.), 1℃ Unit
Communication voltage : DC 24V, (random order, nonpolar)
Touch Method : capacitive touch
Timed heating : 24-hour timed heating possible for all rooms, time set by the hour
Backlight : offered as option
Dimensions : 72 × 120 × 10mm
KRC-900 Temperature Controller
KRC-900 Temperature Controller
Temperature : 5℃ ~ 40℃(Indoor temp.), 1℃ Unit
Communication voltage : DC 24V, (random order, nonpolar)
Touch Method : capacitive touch
Timed heating : 24-hour timed heating possible for all rooms, time set by the hour
Backlight : offered as option
Dimensions : 72 × 120 × 10mm
KRC-500M Living Room Temperature Controller
KRC-500M
Living Room Temperature Controller
Temperature : 5℃ ~ 40℃(Indoor temp.), 1℃ Unit
Communication voltage : DC 24V, (random order, nonpolar)
Touch Method : capacitive touch
Intermittent heating : 3-4-5-6-9-12-15-20-25-30-60 min./hour
Automatically set temp. at 30C
Backlight : offered as option
Dimensions : 72 × 120 × 10mm
KRC-500S standard temperature controller
KRC-500S standard temperature controller
Temperature : 5℃ ~ 40℃(Indoor temp.), 1℃ Unit
Communication voltage : DC 24V, (random order, nonpolar)
Touch Method : capacitive touch
Intermittent heating : 3-4-5-6-9-12-15-20-25-30-60 min./hour
Automatically set temp. at 30C
Backlight : offered as option
Dimensions : 72 × 120 × 10mm
KRC-500F Color living room temperature controller
KRC-500F
Color living room temperature controller
Communication voltage : DC 24V, (random order, nonpolar)
LCD : 2.2-inch TFT 65K color touch screen, 32bit CPU embedded
Touch Method : capacitive touch and Impact touch
Timed heating : 24-hour timed heating possible for all rooms, time set by the hour
Intermittent heating : 3-4-5-6-9-12-15-20-25-30-60 min./hour
Automatically set temp. at 30°C
Dimensions : 72 × 120 × 12mm
KRC-620 Complex Temperature Controller
KRC-620 Complex Temperature Controller
Control mode
Temperature mode, Ventilation mode, Time mode

Specifications
Customized screen, buttons, and functions offered according to user taste.
Backlight
Dimensions : 120 × 120 × 10mm
MC-3100 Valve Control Box
MC-3100 Valve Control Box
Power : AC220V±10% 50/60Hz, Power cord 3P-1M
Temperature controllers : maximum connections up to 8
Valve drivers : up to 8
Boiler connection : Communication linkage or relay contact points (NO-COM-NC)
Dimensions : 200 × 110 × 35mm
MC-400 Valve Control Box
MC-400 Valve Control Box
The specifications and characteristics are identical to those of MC-3100
Valve drivers : up to 6
Dimensions : 140 × 85 × 45mm
KVA-300 Motorizing Valve
KVA-300 Motorized Zone Valve(Ball Type)
Power consumption : AC21V, 2.5W(While operating)
Motor/cord : AC magnet motor, VCTF 0.5㎟ × 31M
Rotational torque : 20kgf/cm
Permissible valve differential pressure : 4bar
Closing pressure : 10kg/㎠
Operating time : 15seconds - 15seconds (Open - Closed)
Valve Size : 15A, 15S (valve socket)

Special Feature
Electrically safe as it is operated at a low voltage (AC21V)
Easy manual control and identification of open/close state
No direction restraints, allowing free installation
KVA-400 Motorized Zone Valve(Disc Type)
KVA-400 Motorized Zone Valve(Disc Type)
Power consumption : AC21V, 2.5W(While operating)
Motor/cord : AC magnet motor, VCTF 0.5㎟ × 31M
Rotational torque : 20kgf/cm
Permissible valve differential pressure : 4bar
Closing pressure : 10kg/㎠
Operating time : 11seconds - 11seconds (Open - Closed)
Valve Size : 15A, 20A, 25A

Special Feature
Electrically safe as it is operated at a low voltage (AC21V)
Easy manual control and identification of open/close state
Comes with directions (install in the return pipe)