Hotowell HTW-61-EW001-B Room Controller THERMOSTAT
INTRODUCTION
HTW-61-EW001-B is a Noise-Free room climate controller application for water installations with fan coils. It is designed as a stand-alone device to operate the fan coil
unit of a zone and includes a set of functions for 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 is a compact unit that includes a large backlit display screen, a built-in temperature sensor, pushbuttons on the front panel, and inputs and outputs built on a split remote relay module for room control.
This split thermostat application includes two parts:
- Manual operation display part: HTW-61-EW001-B
- Remote relay module part: HTW-61-EW001-RM
These two parts are communicated via 4-wire connections:
- GND
- 12V
- TXD
- RXD
It provides a totally Noise-Free application due to its remoted relay module.
General features
- Wide, blue backlit LCD, 65 × 59 (mm)
- Front panel built in pushbuttons: Mode/+T/-T/Fan speed/On-Off
- Front panel built in temperature sensor
- Two models available: 4 or 5 pushbuttons (HEAT/COOL)
- Configurable for 2 pipe / 4 pipe systems
- Selectable temperature units (ºC/ºF)
- Configurable max/min/economy temperature setpoints
- Keycard switch contact occupancy monitoring for energy saving
- Configurable anti-humidity frequency:10/30,5/30,5/60
- Configurable keycard switch input: keycard switch/lighting
- Configurable fan coil: 3 speeds / 1 speed
- Speed 1 configurable as blocked or unblocked on zero demand
- Economy mode Heat/Cool temperature setpoint Heat/Cool dead band
- Delayed switching to Economy when card is removed
- Automatic device startup after loss of power
- Configurable NO/NC valve outputs
- Noise-Free application
Device Inputs and Outputs
Inputs:
- Digital, keycard switch contact / lighting auxiliary contact 1 Digital, window contact
- Analog, ambient temperature external sensor
- 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
Product description
The split controller Noise-Free application is designed for room climate 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 is provided to maintain room or zone temperature to user requirements.
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 occupiedand another 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.
The device includes a simple configuration menu that allows configuring up to 28 parameters. The unit can thus be adapted to the requirements of each installation.
More importantly, the device is designed with a remote relay module, in order to provide a totally Noise-Free application.
Configuration Parameters
Special Note
- During power-off status, push and hold “Fan” and “+” buttons together for 6s to entry the configuration parameter setting;
- There are two lighting output.
- lighting 1:when P10 configured as 2P，the Aux is working as a courtesy lighting;
- Lighting 2: Lamp output(terminals 14-15) associated with window contact input.
Special Note
lighting 1: when P10 configured as 2P，the Aux is working as a courtesy lighting; |
||||
| Parameter | Description | Possible values | Default values | Setting display |
| 1 | Displaying temperature in ℃ or ℉ | ℃ or ℉ | ℃ | C/F |
| 2 | Fan-coil speed(1 speed,3speeds) | 1/3 | 3 | 1/3 |
| 3 | 1 fan-coilspeed active when there’s no demand in cooling mode | NO/YES | YES | NO/YES |
| 4 | 1 fan-coilspeed active when there’s no demand in heating mode | NO/YES | NO | NO/YES |
|
5 |
OFF or ECO or Anti-humidity mode when key-card is removed
-Note 1 |
OFF/ECO/ANTI |
ECO |
OFF/ECO/ANTI |
| 6 | Time to change to OFF or ECO or Anti-humidity mode | 1-250s | 20s | 1-250S |
|
7 |
Change mode COOLING/HEATING as per water temperature entry
-Note 2 & Note 3 |
NO/YES |
NO |
NO/YES |
|
8 |
Change mode COOLING/HEATING as per set-point/temperature difference |
NO/YES |
NO |
NO/YES |
|
9 |
Displaying value(set-point/room temperature/set-point&temp.)
-Note 4 |
SET/TEP/SET&TEP |
SET |
SET/TEP/ALL |
| 10 | Installation type（2piles/4pipes） | 2P/4P | 2P | 2P/4P |
| 11 | Key-card input system working mode(Card/Auxiliary lighting) | CA/LI | CA | CA/LI |
|
12 |
Contact type for key-card input setted up as auxiliary lighting(Push/Switch) |
PSH/STH |
PSH |
PSH/STH |
| 13 | Dead-band temperature between cool/heat | +1℃~+6.0℃ | 3℃ | +1℃~+6.0℃ |
| 14 | Offset temperature | -3.0℃~+3.0℃ | 0.0℃ | -3.0℃~+3.0℃ |
| 15 | Configurable set-point maximum temperature | +22.0℃~+32.0℃ | 32.0℃ | +22.0℃~+32.0℃ |
| 16 | Configurable set-point minimum temperature | +15.0℃~+21.0℃ | 15.0℃ | +15.0℃~+21.0℃ |
| 17 | Set-point temperature in cool and occupied mode | +15.0℃~+32.0℃ | 23.0℃ | +15.0℃~+32.0℃ |
| 18 | Set-point temperature in cool and ECO mode | +15.0℃~+32.0℃ | 26.0℃ | +15.0℃~+32.0℃ |
| 19 | Set-point temperature in heat and occupied mode | +15.0℃~+32.0℃ | 21.0℃ | +15.0℃~+32.0℃ |
| 20 | Set-point temperature in heat and ECO mode | +15.0℃~+32.0℃ | 16.0℃ | +15.0℃~+32.0℃ |
| 21 | Equipment start-up after reset(OFF/ON) -Note 5 | OFF/ON | ON | OFF/ON |
| 22 | Equipment start-up internal mode(COOL/HEAT) | CO/HE | CO | CO/HE |
| 23 | Closed electro-valves output control status | NO/NC | NO | NO/NC |
| 24 | Active lighting time(aux) from key-card detection -Note 6 | 0-250s | 20s | 0-250S |
| 25 | Default value for all parameters | NO/YES | NO | NO/YES |
| 26 | Modbus address setting（ID） | 1~255 | 1 | 1~255 |
|
27 |
Window contact input working algorithm ：
1）.when window contact open,valve outputs stop,fan speed stops 2）.when window contact open,valve outputs stop,but fan speed switches to slow； 3）.this contact is associated with LAMP output: a.when window contact closed,Lamp on ； b.when window contact open,Lamp off |
1/2/3 |
1 |
1/2/3 |
| 28 | Delay time to switch after window contact open | 1-250s | 20s | 1-250s |
|
29 |
The frequence of Anti-humidity: 1).10mins every 30mins;
2). 5mins every 30mins; 3). 5mins every 60 mins |
1/2/3 |
2 |
1/2/3 |
|
30 |
Time delay for Auto-Speed switch: 1). 1—1 min delay;
2). 3—3 min delay; 3). 5—5 min delay |
1/3/5 |
1 |
1/3/5 |
| Notes | ||||
|
1) |
Anti-humidity algorithm：when the key card pulled out,the device automatically switch to work at set-point 24 degrees for a period of time every confirgured mintues depending on the configuration of P29 | |||
| 2) | Priority parameter on P8 | |||
|
3) |
The internal/external temperature sensor is selected by placing jumper J1 on position IN or OUT; The IN & OUT dual sensor mode could be configured by removing the jumper. | |||
|
4) |
If P9 is confirgured as ALL, defaulting display SET, and display TEP by pushing and holding “+”&”-” buttons together, 6s later return to SET display. | |||
|
5) |
When this parameter is programmed as ON, if the parameter number 5 is setted up as ECO and the room is unoccupied, the equipment will start in ECO mode. | |||
|
6) |
If it shows 0 seconds, the auxiliary output will remain active while the key-card input is active and it will be disconnected when the key-card input is switched off and exceed the settedtime in parameter number 6. | |||
MODBUS RTU
Baud rate: 4800 No Parity bit, 8 Data bit 1 Stop bit:
Basic description
| No. | Parameter | Protocol provision |
| 1 | Operating mode | RS-485 connection, master-slave |
| 2 | Physical interface | A(+),B(-) 2-wire system |
| 3 | Baud rate | 4800 |
| 4 | Byte format | No Parity bit, 8 Data bit，1 Stop bit |
| 5 | Transmission mode | RTU format |
| 6 | Thermostat address | 1-255 |
| 7 | Command code | 03-read data, 06/10-set data |
| 8 | CRC check code | CRC-16 |
| 9 | CRC verification mode | CRC-16 |
Command frame
Command code 03: Read data (“x” can only be “0x01”-read single data or “0x27”-read all data
Command frame given by upper computer
| 01 | 03 | 9C | 40 | 00 | x | CRC_L | CRC_H |
| Device ID | Command code | Starting address | Register address number | CRC check | |||
Response frame given by thermostat
| 01 | 03 | x*2 | Data1_H | Data1_L | … | DataX_H | DataX_L | CRC_L | CRC_H |
| Device ID | Command
code |
Data byte
length |
Data 1 | … | Data x | CRC Check | |||
Command code 06: Write single data Command frame given by upper computer
| 01 | 06 | 9C | 40 | Data_H | Data_L | CRC_L | CRC_H |
| Device ID | Command code | Starting address | Register address | CRC Check | |||
Command code 10: Write all data Total 35 items can be written Command frame given by upper computer
| 01 | 10 | 9C | 40 | 00 | 23 | 46 | Data1_H | Data1_L | |
| Device ID | Command code | Starting address | Register address number | byte length | Data 1 | ||||
| Data2_H | Data2_L | …… | Data35_H | Data35_L | CRC_L | CRC_H | |||
| Data 2 | …… | Data 35 | CRC Check | ||||||
Command frame given by thermostat
| 01 | 10 | 9C | 40 | 00 | 23 | CRC_L | CRC_H |
| Device ID | Command code | Starting address | Register address number | CRC Check | |||
Register address
| Address | Meaning | Read/Write | Value |
| 40000 | On/off control | R/W | On=0x55 off=0xaa |
| 40001 | Keyboard lock | R/W | Lock=0x55 unlock=0xaa |
| 40002 | Working model | R/W | Cool=0x11 heat=0x22 |
| 40003 | Fan speed | R/W | Auto=0x00 low=0x01 middle=0x02 high=0x03 |
| 40004 | Rely output status | R | BIT=1,relay has output;BIT=0,relay has no output BIT0:low fan
BIT1:mid fan BIT2:high fan BIT3:valve status BIT4:AUX status(when 4pipes) |
| 40005 | Room temp | R | Communicate data=room temp*10 |
| 40006 | Water temp | R | Communicate data=water temp*10 |
| 40007 | Seting temp | R/W | Communicate data=seting temp*10 |
| 40008 | Room card status | R | No card=0x00 with card=0x01 |
| 40009 | Aux control | R/W | Aux on=0x55 aux off=0xaa |
| 40010 | Lamp control | R/W | Lamp on=0x55 lamp off=0xaa |
| 40011 | Parameter1 | R/W | C=0x00 F=0x01 |
| 40012 | Parameter2 | R/W | 1fan=0x00 3fan=0x01 |
| 40013 | Parameter3 | R/W | No=0x00 yes=0x01 |
| 40014 | Parameter4 | R/W | No=0x00 yes=0x01 |
| 40015 | Parameter5 | R/W | eco=0x01 anti=0x02 off=0x03 |
| 40016 | Parameter6 | R/W | Communicate data= Parameter6 time |
| 40017 | Parameter7 | R/W | No=0x00 yes=0x01 |
| 40018 | Parameter8 | R/W | No=0x00 yes=0x01 |
| 40019 | Parameter9 | R/W | Set=0x01 temp=0x02 all=0x03 |
| 40020 | Parameter10 | R/W | 2 P=0x00 4P=0x01 |
| 40021 | Parameter11 | R/W | CA=0x00 LI=0x01 |
| 40022 | Parameter12 | R/W | PSH=0x00 STH=0x01 |
| 40023 | Parameter13 | R/W | Communicate data= Parameter13*10 |
| 40024 | Parameter14 | R/W | Communicate data= Parameter14*10 |
| 40025 | Parameter15 | R/W | Communicate data= Parameter15*10 |
| 40026 | Parameter16 | R/W | Communicate data= Parameter16*10 |
| 40027 | Parameter17 | R/W | Communicate data= Parameter17*10 |
| 40028 | Parameter18 | R/W | Communicate data= Parameter18*10 |
| 40029 | Parameter19 | R/W | Communicate data= Parameter19*10 |
| 40030 | Parameter20 | R/W | Communicate data= Parameter20*10 |
| 40031 | Parameter21 | R/W | Off=0x00 on=0x01 |
| 40032 | Parameter22 | R/W | CO=0x00 HE=0x01 |
| 40033 | Parameter23 | R/W | NO=0x00 NC=0x01 |
| 40034 | Parameter24 | R/W | Communicate data= Parameter24 time |
| 40035 | Parameter25 | R/W | Reset=0x01 |
| 40036 | Parameter27 | R/W | 1=0x01 2=0x02 3=0x03 |
| 40037 | Parameter28 | R/W | Communicate data= Parameter28 time |
| 40038 | Parameter29 | R/W | 1=0x01 2=0x02 3=0x03 |
REFERENCE:
DOWNLOAD MANUALS:
Hotowell HTW-61-EW001-B Room Controller THERMOSTAT PRODUCT SPECIFICATION SHEET
Hotowell HTW-61-EW001-B Room Controller THERMOSTAT PRODUCT SPECIFICATION SHEET
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