Hotowell 0-10V Modulating Modbus Thermostat for Hotel Fan Coil System
--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.
The device includes a built in temperature sensor on its front panel for room temperature measurement, and features an advanced control algorithm for fan coil speed and valve position control. Two digital inputs are also provided, one to detect zone occupancy from a keycard switch contact-used in hotels to indicate that the room is occupied, and the other one to connect to a window contact-used to temporarily disconnect operation when the window is open. The keycard switch input may alternatively be configured to control zone lighting on 2 pipe systems. In this case, one of the valve outputs converts to lighting control output.
>> 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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