HOTOWELL HTW-31RT User manual

Wifi Wireless Thermostatic Radiator Valve Actuator
HTW-31RT
1
Thermostatic Radiator Valves (TRVs) sense the air
temperature around them and regulate the flow of
water through the radiator which they are fitted to.
They do not control the boiler.
They should be set at a level that gives you the
room temperature you want. These settings may
have to be different in each room, and you should
set the TRVs to suit each room and then leave
them to do their job.
Turning a TRV to a higher setting will not make the
room heat up any faster. ow quickly the room
heats up depends on the boiler size and setting,
and the radiator size. Turning a TRV to a lower
setting will result in the room being controlled at a lower temperature, and saves energy.
TRVs need a free flow of air to sense the temperature so they must not be covered by curtains or blocked by
furniture.
Functions
 M30 x 1.5 Universal T pe Head to bod connection
 LCD displa can be clearl read with the background lighting.
 Eas for installation
 Five buttons make it eas to use.
 PID control
 7 da s program(4 periods/da )
 The displa shows the set temperature or measured temperature, time.
 Temperature displa in degrees Celsius.

Wifi Wireless Thermostatic Radiator Valve Actuator
HTW-31RT
2
Technical data
Thermostat operating voltage: 2 x AA1.5 V, alkaline batteries.
Backup storage: EEPROM
Switching options: 7 days programming (4 periods/day)
Frequency: 2.4Ghz
Temperature settings: 5°C ~ 35°C, in 0.5 ℃
Accuracy: ± 1 ℃
Control: PID
Thermostat dimensions: φ55*69mm
Max Extention 5.0mm
Color: White
IP protection rating: 20.
Certification: CE ， RO S,RED
Displa and buttons
Batter Installation and valve installation( Take M30 adaptor as an example)
Window opened
Clock and weekday
Low battery indicate
Singnal icon (Indiate when paired with gateway )
Current period
Manual
mode
Child
lock
PRG mode
Away mode

Wifi Wireless Thermostatic Radiator Valve Actuator
HTW-31RT
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1) Once the battery installed, the TRV display INIL, which means initialization.
2) Install the TRV onto your radiator.
3 ） Then the TRV display AdAP, then press UP button （ change 0 to 1), which means the TRV will adapt
itself to the stroke of your valve body. To do this, the TRV will now be opened and closed twice to store
the end points.
Mode setting
Press M button to choose Manual mode/Away mode/PRG mode.
Clock & Weekda setting
Press and hold P button for 5s, set the clock (Min- our-Weekday) by pressing UP and DOWN button, each
press of P button will go to next item setting.
7 da s programmable setting
After finish the clock setting, press P to go to PRG schedule setting.
Set the schedule (Weekday-Period-Start time-Temp.) by pressing UP and DOWN button, each press of P
button will go to next item setting.
Default Setting:
Period 1 2 3 4 5 6
Time Temp. Time Temp Time Temp Time Temp Time Temp Time Temp
12345(Mon.~Fri.) 6:00 25
℃ 8:00 20 ℃ 11:30 25 ℃ 12:30 20 ℃ 17:00 25 ℃ 22:00 20 ℃
6(Sat.) 8:00 25
℃ 11:30 20 ℃ 12:30 25 ℃ 17:00 20 ℃ 22:00 25 ℃ 23:30 20 ℃
7(Sun.) 8:00 25
℃ 11:30 20 ℃ 12:30 25 ℃ 17:00 20 ℃ 22:00 25 ℃ 23:30 20 ℃
Open window detect function (OWD function)
When the Open Window mode is enabled in the parameter setting, the system will automatically stop
heating when it detects a sudden drop of room temperature (2°C in 15 minutes as default). This is
normally caused when a window or door is opened without turning off the heating device.
The device will return to the previous mode of operation after 30mins, then OP disappear. Press any
button will exit OWD function during the heating off period.
Pair with Host device
1) Make the host device(eg.gateway) is on the status waiting for adding slave thermostats.
(Please pair the gateway with Mobile app first.)
2) Enter gateway page on the mobile app, and press the button for adding sub-devices, find thermostat
and click to add.
Initialization and Adaption

Wifi Wireless Thermostatic Radiator Valve Actuator
HTW-31RT
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3) Turn TW-31RT off by pressing ON/OFF button, then long press M button until it show a “0 and
signal icon”, then press UP button, when TW-31RT display 3 or signal icon stop moving,
means code pairing done. Press ON/OFF button to return, and press again to turn it on.
Parameter setting
Turn off the thermostat, Press and hold M and UP button for 3s, until it shows the item 01, each press of M button will go
to next item setting, adjust the range by using UP and DOWN button.
Mounting
Menu Description Range Default Value
01 Temp. calibration for internal sensor -8
℃ ~8 ℃ 0 ℃
02 Set Point Max. 5
℃ ~35 ℃ 35 ℃
03 Set Point Min. 5
℃ ~35 ℃ 5 ℃
05 Frost Protection Temp. 5
℃ ~15 ℃ 5 ℃
10 Display 0: Room temp.
1: SET temp.
0
12 Open window detect function 1: ON 0: OFF 0
13 OWD Detect Time 2~30mins 15mins
14 OWD Drop temp. select
（ within detect time ）
2.3.4’C 2 ‘C
15 OWD Delay time select
(Return to previous working status)
10~60min 30mins
17 Factory reset 0: No 0
1: Yes, and then press
On/off button for 5s,wait
until thermostat restart
18 Software version
19 Software version
31 Battery voltage Unit: 10mv
32 PID P-band select 2
℃ ~10 ℃ 7 ℃
33 PID I-time select 30~90min 30min