Hotowell HTW-61-EW001 Room Controller THERMOSTAT Instruction Data Sheet

Hotowell HTW-61-EW001 Room Controller THERMOSTAT

Instruction Data Sheet

• 4 Buttons Version
• 5 Buttons Version

HTW-61-EW001 is a Noise-Free room climate controller application for waterinstallations 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 split remote relay module for room control.
This split thermostat application includes two parts:

1. Manual operation display part: HTW-61-EW001
2. 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, 64 × 26 (mm)
• Front panel built in pushbuttons: +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:

1. Digital, keycard switch contact / lighting auxiliary contact 1 Digital, window contact
2. Analog, ambient temperature external sensor
3. Temperature sensor, built in on device front panel

Outputs:

• Relays, fan coil speed (I,II,III)
• Relay, chilled water valve
• Auxiliary relay (hot water valve on 4 pipe systems / lighting on 2 pipe systems)
• 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 occupied and 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.

Wiring diagram

Installation instructions

This device should not be installed on shelves, behind curtains, above or near heat sources, or exposed to direct sunlight. For fast and accurate ambient temperature measurement, the controller should be installed such that air may circulate vertically. Installation height should be approximately 1.5 m from the floor.

Caution:

• Prior to installing or removing the device, ensure that there is no mains voltage present in the wiring to be connected or near the unit. Do not cut or roll up the wires to be connected to the
  device. Do not work on the wiring with wet hands.
• Do not open or drill through the device.
• Keep the device and the supply wires away from moisture and dust. Use a damp cloth to clean the device.

Installation steps:

1. Install the flush mount back box on the wall
2. Connect all wires to the appropriate device terminals
3. Seal the internal flexible cable conduit to avoid air flowing into t he device.
4. Insert and screw the device in the box
5. Fit the frame onto the device
6. Remove the front panel anti-scratch protective foil

Pushbutton operation

On/Off
Switches the device and its operation on and off. In keycard switch contact operating mode, when the room is not occupied it will not allow operation until occupancy is detected.

Fan-Coil Speed
Selects sequentially the 3 fan coil speeds and the AUTO mode every time the pushbutton is pressed. Two modes are selected: AUTO or MAN. AUTO: the screen will display “AUTO”, in addition to the corresponding bar graph to indicate current speed. Fan coil speed will be automatically determined by the controller, based on thermal demand. MAN: the user forces the desired fan coil speed. The “AUTO” label is not displayed in this mode.

Temperature setpoint
Temperature setpoint value may be increased or decreased within the maximum and minimum limits as configured in the device.

Heat/Cool: (optional pushbutton, depending on the model) Switches the device operating mode between HEAT and COOL.

Device operation

Energizing the device

• The device can be configured to start up from the off position or in operation after a voltage drop.
• The front panel LED indicator lights up red and then turns green. If it stays red it means there is an anomaly in the device; the device should be replaced.
• During the first few seconds the screen will display some digits, which will subsequently disappear.

Operating modes

• The device should be configured to operate on either of the two available operating modes. The operating mode is configured through parameter P11 in the configuration menu.

Operating mode configuration

1. Occupancy detection (keycard switch contact) based climate control: In this operating mode, operation is enabled when the keycard switch input switches to the closed position. When this happens, the pushbuttons are enabled and the user may start the operation at any time. When the keycard switch input is open, the device pushbuttons remain blocked.
   When the card is pulled out, the climate control system switches to Off or to the Economy mode, depending on the configuration of parameter P5. There is a programmable delay for the action to take place after the card has been pulled out. Parameter P6 is used to set the delay time.
2. Climate control + lighting (Lighting auxiliary):
   In this operating mode, the controller may be switched on or off at any time through the front panel pushbuttons, since there is no keycard switch contact available to block the device. The keycard switch contact is in this case configured to operate as a lighting contact, which acts on the AUX output every time the input changes its state (refer to installation diagrams). This operating mode is only possible on 2 pipe systems.
3. Anti-Humidity mode:
   In this operating mode, the controller automatically works at set-point 24 degrees for a period of time every confirgured minutes depending on the configuration of P29.

Input and output operation

1. Keycard switch contact configured for a keycard switch:
   This input is associated to terminals 7-8 in the device.
   This operating mode is selected by configuring parameter P11 = CA. o
   When the input is open (no card), the control system is switched off and the pushbuttons are blocked; this prevents the user from switching on the climate control when the room is not occupied.
   • When the input switches to the closed position (the card is inserted), the pushbuttons are enabled so that the user may switch on the climate control. On 2 pipe systems, the AUX output activates during the preset time on parameter P24, and automatically deactivates when this time expires, unless P24 is set to 0 seconds. This output may be used for a courtesy light contact.
   • When the input switches to the open position (the card is pulled out), the climate control automatically switches off after the preset time in parameter P6 expires and the pushbuttons become blocked. On 2 pipe systems, the AUX output activates and automatically deactivates after the preset time expires.
2. Keycard switch contact configured as a lighting auxiliary contact: This input is associated to terminals 7-8 in the device.
   This operating mode is set by configuring parameter P11 = LI. The device should be configured to operate in 2 pipe system mode (parameter P10 = 2P).
   This input may be configured to operate either in Switch mode or Pushbutton mode through parameter P12.
   • In the Switch mode, when the input changes to the closed position, the AUX output closes. When the input changes to the open position, the AUX output opens.
   • In the Pushbutton mode, when a pulse is detected (the input closes and then opens), the AUX output changes its state.
3. Anti-Humidity mode:
   1. In this operating mode, if it is confirgured as ANT on the configura-tion P5, 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. During the anti-humidity mode, the screen displays the ANTI icon.
4. Window contact:
   This input is associated to terminals 9-10 in the device.
   1. When the input is closed, the climate control system operation is enabled.
   2. When the input changes to the open position, the climate control system switches off, temporarily leaving the room with no climate control. The screen displays the open window icon and the fan coil speed icon disappears.
   3. When the input changes to the closed position, the climate control system automatically reactivates; the open window icon disappears from the screen and the fan coil speed icon is displayed
      again.
      Notes: The above window working algorithm is configured as 1 on configuration P27; if confirgured as 2, when the input open, Valve output reactivates, but Fan output switch to low speed; if confirgured as 3, the Lamp output is assosiated with window input, when the input open, the Lamp output open, when the input closed the Lamp closed too.
5. Water temperature analog input:
   This input is associated to terminals 11-12 in the device.
   In order to use this input, parameter P7 should be configured as YES.
   This input is used to detect the installation water temperature and automatically switch the device operating mode to HEAT or COOL:
   • When CHILLED water is detected, the device switches to the COOL mode.
   • When HOT water is detected, the device switches to the HEAT mode.
6. External temperature analog input:
   • This input is associated to terminals 11-12 in the device.
   • This input is used to connect a temperature sensor in order to operate the zone climate control without using the device front panel temperature.
   • To use this input, jumper J1 should be placed on position EXT. Jumper J1 is located on PCB inside the relady module.
7. Front panel temperature sensor:
   • This sensor is used for the zone climate control.
   • Device configuration is by placing jumper J1 on position INT. Jumper J1 is located on PCB inside the relay module.
   • The factory setting for jumper J1 is INT.
8. Fan coil speed relay outputs:
   • These outputs are associated to terminals 16-17-18-19 in the device. The device has three potential free relay type outputs available that share a singly common terminal; this terminal connects to the fan coil motor, which may have up to three speeds.
   • The climate control system automatically manages speed when the device is on the AUTO mode; speed is determined based on the difference between measured temperature and setpoint temperature. The user may at any time switch the device to the MANUAL mode by pressing the fan coil speed pushbuttons. Every time a pushbutton is pressed, a new speed is set in the device until the AUTO mode is selected again. The device screen displays the fan coil speed at all times, in addition to the AUTO text when the device is on this mode.
9. AUX output
   • This output is associated to terminal 22 in the device.
   • This output may be used to actuate the HEAT valve on 4 pipe systems, or as a lighting auxiliary output on 2 pipe systems.
   • The output is automatically configured through parameter P10.
   • In the 4 pipe mode, the climate control algorithm automatically. drives the output, its state depending on the heat demand of the system.
     In the 2 pipe mode, the output may be used to operate a courtesy light; it automatically activates when a card is inserted or pulled out of the keycard switch, and it deactivates when the set time in parameter P24 expires. With P24 set to 0 seconds, the output stays active when the keycard switch input is active; this mode may be used to drive a main breaker for room lighting.
10. VALVE output:
    • This output is associated to terminals 20-21 in the device.
    • In the 2 pipe mode, the climate control algorithm automatically drives the output, its state depending on the cooling or heating demand based on the device operating mode.
    • In the 4 pipe mode, the climate control algorithm automatically drives the output, its state depending on the cooling demand of the system.

Technical features

• Supply power
  • Operating voltage ……………………………………………………..100-250Vca; 50/60Hz
  • Maximum rated current ………………………………………………………………..110mA
• Digital inputs
  • Open circuit voltage ……………………………………………………….12Vdc ±0,2 V
  • Short circuit current ……………………………………………………………………… 8 mA
  • Maximum open contact current ……………………………………………….. <2 mA
  • Minimum closed contact current …………………………………………….. >5,5 mA
• Temperature sensor inputs
  • Sensor type ………………………………………………………………………………….. Resistive
  • Sensor characteristics ……………………………………… Interchangeable NTC, 1% 3740 10K 10 kΩ
  • Ambient temperature measuring range .. +5ºC to +45ºC (+41ºF to 113ºF)
  • Resolution ……………………………………………………………………………………………. 0,1ºC
• Relay outputs
  • Contact type ……………………………………………………………… Potential free Normally open
  • Maximum operating voltage ……………………
  • Maximum current ………………………………………………….. 5 A, resistive load (*1) 2.5A, inductive load
  • (1) Auxiliary output ……………………………………………………………………………….2.5A
  • (1) Lamp output …………………………………………………………………………………….2.5A
• Device status
  • On/Stand-by ……………………………………………………………. Off/Green
• Pushbuttons
  • +T / -T / Fan-Coil Speed / ON – OFF  WARM/COOL (5 pushbuttons model)
• Temperature
  • Operating ……………………………………………… 0ºC to +50ºC (32ºF to 104ºF)
  • Storage ……………………………………….. -20ºC to +85ºC (-4ºF to +185ºF)
• Humidity (no condensing)
  • Operating ………………………………………………………… 10% to 90% RH to 50ºC
  • Storage …………………………………………………………………… 95% RH to 50ºC
• Dimensions, weight and installation
  • Device dimensions (witout frame) …………………………………….. 132x70x42 mm
  • Weight …………………………………………………………………………………………………… 225 gr.
  • Flush mount back box …………………………………. Bticino 504 E (not included)
  • Frame …………………………………………………….. Bticino Light series (not included)
  • Frame dimensions ……………………………………………………………………..140x86mm
  • Screw hole center distance ……………………………………………………………….108mm
  • Plug-In connectors .………………………………………………………………………………….. YES
  • Conductor cross sectional area …………………………………0,5 mm2 to 2,5 mm2
  • Protection index ………………………………………………………………………………….. IP20
  • Electrical safety .……………………………………………………………………………….. Class III
• Applicable product standard
  • Automatic electrical controls for household and similar use .……………………………………………………………………. EN 60730-1

Configuration Parameters

Special Note

1. During power-off status, push and hold “Fan” and “+” buttons together for 6s to entry the configuration parameter setting;
2. There are two lighting output.
   1. lighting 1:when P10 configured as 2P，the Aux is working as a courtesy lighting;
   2. Lighting 2: Lamp output(terminals 14-15) associated with window contact input.

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 frame given by thermostat

01	06	9C	40	CRC_L	CRC_H
Device ID	Command code	Starting 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:

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Hotowell HTW-61-EW001 Room Controller THERMOSTAT Instruction Data Sheet

Hotowell HTW-61-EW001 Room Controller THERMOSTAT Instruction Data Sheet