>> General
HTW-EW002 is a Noise-Free room climate controller application for water-installation with fan coils/EC fan
/Modulating valve. It is designed as a RTU Modbus communicated device to operate the fan coil unit / EC Fan / Modulating Valve of
a zone and includes a set of functions for lighting control, zone occupancy and window
position based climate control. A high level of comfort and appropriate climate control to ensure maximum energy savings are thus
provided.
These two parts are communicated via 3-wire with carrier transmission technology connections, up to 50m non- loss communication:
-GND
-12V
-DATA
* AC controlling solutions
* Configurable for 2 pipe / 4 pipe systems
* Black-Negative/White-LCD screen Optional
* Selectable temperature units (ºC/ºF)
* Touch Key Pads:+T/-T/Setting/Fan speed/Model/On-Off
* Configurable max/min/economy temperature set points
* Completely flat tempered glass screen-protect cover
* Configurable anti-humidity requency:10/30,5/30,5/60
* Keycard/Window Card switch contact
* Automatic device startup after loss of power
* ON/Off 3 speeds / 1 speed configurable
* Configurable NO/NC valve outputs
* EC fan Control with starting/max. voltage configurable
* Delayed switching to Economy when card is removed
* Modulating Valve Output 0-10V / 2-10V configurable
* Switching Differential Dead Band configurable
* Internal/External/In & EX dual Sensor
* Baud rate: 4800/9600/14400/19200 configurable
* Noise-Free application with keypad operation buzzer
* Full/Half keypads lock
* 3-wire between display-relay part up to 50m no data loss
* 2 wire /SPST/SPDT(2 pipe) valve compatible
* 1/3/5 min auto-speed switching time configurable
* Keycard NO & NC types configurable
* Temperature display calibration
* Aux. lighting Activate type: Push/Switch configurab
>> Device Inputs and Outputs
Inputs:
1 Digital, keycard switch contact / lighting auxiliary contact
1 Digital, window contact
1 Analog, ambient temperature external sensor
1 Temperature sensor, built in on device front panel
Outputs:
3 Relays, fan coil speed (I,II,III)
1 Relay, chilled water valve
1 Auxiliary relay (hot water valve on 4 pipe systems / lighting on 2 pipe
systems)
1 Auxiliary relay for lamp
1 EC fan
1 Modulating Valve
Hotowell is a high-tech company with rich experiences in product design and manufacturing, knowledge about global HVAC standards, and highly-trained team. Our objective is to produce and design user-friendly HVAC products on the highest technical level for improving people's experience in temperature/environment comfort.
Hotowell has been cooperating with many international companies and HVAC projects through Europe, American, Asia, Oceania. Our product range contains:
Thermostats, Motorized Zone Valves, Ball Valves, Valve Actuators, Damper Actuators, Controllers, Radiator valves, and etc. covering industrial, commercial and residential temperature controls.
Q1:What is the unit price?
A.:The unit price varies according to different specific requirements, we are more than pleased to quote you the best price once get your specific application. e.g. W/O Modbus, W/O key-card, 2/4 pipe system, W/O customized programming...
Anyway, we are always ready to discuss details with you via Email.
Q2:What is the MOQ, small quantities accetaple?
A.: Commonly the MOQ for us is 500pcs, however, we also accept small quantities or Sample orders as starting.
Q3:How is your products' quality and warrenty?
A.:All of our products meet EU standards, samples are available for quality evaluation; all products are with 18 months warrenty.