kotech's room temperature control system
Will lead the way in developing new technologies for a new heating culture.
One-Zone Temperature Control System
One-Zone Temperature Control System

This is Kotech's simplest system for heating control in studio apartments and hotel guestrooms with centralized heating.
The indoor temperatures are controlled by turning electric valves or floor electric valves or floor electric heaters on and off.

System Configuration

One-Zone Temperature 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-500S standard temperature controller
KRC-500S standard temperature controller
Temperature : 5℃ ~ 40℃(Indoor temp.), 1C 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
VC-400 Valve controller
VC-400 Valve controller
Connects with one temperature controller + one electric valve

Power : AC220V±10% 50/60Hz
Dimensions : 62 × 85 × 42mm
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)