Heating - Ventilating - Air Conditioning
Refrigeration and Process Control
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KTRTB Climate Controller with Triac Output (Noiseless)
KTRTB-211.108 and 251.108 "ultra-thin", Surface Mounted Installation (Air Conditioning Technology)
This controller was specifically designed for heating/cooling regulation of 2 pipe systems used in hotels, homes and offices, can control up to five valve actuators (normally closed).
The KTRTB's internal sensor measures the room temperature and activates heating or cooling depending on the deviation from the configured setpoint temperature. As the switching element used is a triac rather than a relay or bimetal, the system operates silently.
ECO function: if this function is selected, the temperature is adjusted down by 3 K in heating mode and up by 3 K in cooling mode.
Ambient temperature: 0 ... 40 deg C
Storage temperature: -20 ... +70 deg C
KTRTB-211.108 Operating voltage 230 VAC, 50 Hz, protection class II if properly mounted
KTRTB-251.108 Operating voltage 24 VAC, 50 Hz, protection class III, protective low voltage
KTRRB Electronic Climate Controller
KTRRB ranges (Air Conditioning Technolgy)
KTRRB-117.128, KTRRB-117.163 and KTRRB-117.169
Single room temperature controllers with neutral zone for 2-pipe or 4-pipe air conditioners.
External flow sensor (H/C sensor): for automatically switching the controller to heating or cooling mode in 2-pipe operation depending on the inflow temperature; alternatively, this input can be used as an H/C changeover contact.
Sensor rupture and short-circuit protection: in case of a sensor rupture or sensor short-circuit, the heating is activated with a power-on time of 30% to prevent cooling or frost damage in the room.
KTRRB-052.244 and KTRRB-052.245
Temperature controller for cooling ceilings/walls and all kinds of hot water heaters in 2 and 4 pipe systems for hotels, offices and private homes. As the KTRRB features dew point monitoring it is particularly suitable for controlling ceiling cooling systems.
The units can control up to 5 valve actuators (24V normally closed) per output. It can also be adapted to normally open actuators (24V, max 5 pieces) with a jumper.
KTRVB Continuous Electronic climate controller
KTRVB-048.100 to 052.245 range electronic climate controllers, continuous action (Air Conditioning Technology)
Surface mounted installation room temperature controller for the continuous control of valve actuators. Controller for 2-pipe systems (1-duct), 4-pipe systems (2-duct) and mixing chambers.
KTRVB-048.100 Scale deg Celsius, ambient temp 0 ... 50 deg C, control range 5 ... 30 deg C, pipe system compatibility 2 -pipe.
KTRVB-048.200 Relative scale, ambient temp 0 ... 50 deg C, control range 13 ... 29 deg C, pipe system compatibility 2-pipe.
KTRVB-052.244 External dew point sensor, ECO function, ambient temperature 0 ... 40 deg C, control range 13 ... 29 deg C, pipe system compatibility 2-pipe and 4-pipe.
KTRVB-052.245 As for the KTRVB-052.244 but with "off/comfort/cooling" switch.
KTRRU Electronic Climate Controller for cooling Ceilings
KTRRU range (Air Conditioning Technology)
KTRRU-052.245#00 for heating/cooling control of 2- and 4- pipe systems in hotels, homes and offices.
The unit can control up to 5 valve actuators (24V normally closed) per output. The controllers are configured for 2-pipe or 4-pipe operation by means of a jumper. In 2-pipe operation, the controller is operated with a common heating/cooling output whose mode of operation action can be toggled by means of an external contact (changeover contact). Connection of TPS dew point sensors is possible (max 5 of them in parallel). Condensate formation at the TPS can result in the cooling valve getting closed.
It is possible to actuate the energy saving (ECO) function via an external contact.
In the "off" switch position, the room frost protection function is activated (when the temperature drops below 5 deg C, all valves are forced open).
External flow sensor (H/C sensor): for automatic switching of the controller to heating or cooling mode depending on the inflow temperature ("sensor 2"), alternatively, this input can be used as an H/C changeover contact.
KTRRUu Electronic Climate Controller, Flush Mounted with Timer
KTRRUu Electronic Climate Controller (Air Conditioning Technology
The KTRRUu-217.456 range of electronic climate controllers are available in 18 different versions providing a comprehensive range of finishes and specifications.
Flush mounted controller with timer function for heating/cooling regulation of 2 and 4 pipe systems used in hotels, homes and offices. Settings are configured in a menu.
The unit can control up to 5 valve actuators (normally open or normally closed) per output. In 2-pipe operation, the operating mode can be changed via an external contact (changeover) or a temperature sensor. The clock can serve as a master for other controllers for switching to ECO mode.
It is possible to activate the energy saving (ECO) or frost protection (OFF) functions via an external contact. Alternatively, the controller's inputs can be configured to connect with an external temperature sensor or dew point sensor (TPS).
A 0 ... 10 V interface can be used to control the speed of a fan (EC fan), ambiant temperature 0 ... 40 deg C, storage temperature - 20 ... + 70 deg C.
Controls UK