Touch Screen Modbus Digital Thermostat for HVAC System Control
--1 Digital keycard switch
--1 Digital window contact
--1 Analog ambient NTC temperature sensor(internal)
--3 Relays, fan coil speed (I,II,III)
--1 Relay, chilled water valve
--1 Auxiliary relay
--1 Auxiliary relay for lamp
--1 EC Fan DC 0-10V
--1 Modulating Valve DC 0/2-10V
>> 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. Hotowell Noise-Free Split Control HTW-EW002 is a complete HVAC solution device that is designed for room climate/lighting control at hotels, offices and homes with water and fan coil installations. The device includes all the necessary inputs and outputs to operate a 2 pipe or a 4 pipe system; control over one or two on/off valves and a 3 speed fan coil and EC fan and Modulating valve provided to maintain room or zone temperature to user requirements.
>> Features
| * 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 configurable |
>> Device Inputs and outputs
Inputs:
1 Digital, keycard switch
1 Digital, window contact
1 Analog, ambient temperature sensor (internal)
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 DC 0-10V
1 Modulating Valve DC 0/2-10V
>> Wiring Diagram
>> Application
>> Company Profile
>> FAQs
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Q1: Do you supply OEM or ODM? |
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A: Yes, we have strong R&D sources and production ability, and already helping many international companies OEM/ODM cases with highly positive feedback. |
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Q2: Which payments are acceptable? |
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A: We accept T/T,Paypal,Western Union. |
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Q3: How fast can I get the quotation? |
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