HOTOWELL HTW-ST01-A User manual

Non-Programmable Single Stage Thermostat
Reference No.: HTW-ST01-A
- 1 - Version 2019-1.0
Installation and Operation Manual
1 Heat / 1 Cool single stage thermostat.
Non Programmable, Compatible with heat pump system
****************************************************
This thermostat is compatible with the following systems:
• Gas, oil, Propane or electric furnace
• Central air con itioner
• Geo Thermal / Hot water system with or without pump
• Millivolt system
• Central heating an cooling system
• Heat pump without auxiliary/backup heat
• Force Air / In-Floor Ra iant / Ra iator system
• ºF or ºC configurable
• Chil Lock Function
• Large LCD isplay, Backlight.
• Heat an Cool set point storage.
• Display of room temperature, set temperature an current time simultaneously.
• Fan switch ON an AUTO.
• Permanent user setting retention uring power loss. No batteries are require .
• Apply to 24VAC or 2 *AA alkaline batteries power supply.
• Air Filter change In icator, Low Battery In icator, Temperature calibration.
• 4- or 5-wire compatible (C is optional for non-heat pump systems)
• Manual Changeover / Fan Switch, Easy operation frien ly.
• Mercury-Free, Environmentally Safe
• Built-in compressor protection
Power Supply
20VAC-30VAC 50-60HZ or Battery powered.
Terminal Load
1.0A per terminal, 3.0A maximum total load
Set Point Temp. Range
5ºF to 90ºF (7ºC to 32ºC).
ccuracy
+/- 1ºF or +/- 0.5ºC.
Dimensions
6.0” W X .7” H X 1.1” D/152.5x120x28mm
Color
White
Installation Hole istance 3.37
”/85.5mm Horizontal and 3 1/ ” (83 mm)Vertical
or 2.36”/60mm Horizontal
Identify System Type
Features
Specification
isplay
Time  Room Temperature Setting Temperature
/ Heating/Cooling Output Heat/Off/Cool Mo e In icate
 Low Battery In icate Compressor Timing Delay
Fan Status










Non-Programmable Single Stage Thermostat
Reference No.: HTW-ST01-A
- 2 - Version 2019-1.0
Tip: Taking a picture with a camera or smartphone can help you not only remember how wires are connecte to the
terminals, but can also ensure that you label your wires correctly.
********************************Remove Old Thermostat********************************
1.Turn Off the Power
or
To ensure the power to your heating an cooling system has been turne off, try to turn on heating or cooling by changing the
temperature on your ol thermostat
2. Remove the old thermostat cover
Remove the ol thermostat’s front cover from the wall base. Some covers pull off easily, while others may nee to be
remove by prying the cover off with a screw river.
3. Label wires
Using your screw river, carefully unscrew one wire at a time from the terminal block an attach the correspon ing wire label
sticker.
Please note that not all terminals may be use , an that there’s no stan ar color co e for thermostat wires, so your wire
colors may vary.
For your reference, we’ve inclu e a terminal label reference chart as below to help you connect the wires in your ol
thermostat to your new thermostat in case you get stuck.
Terminal labeling reference chart
If your current terminal has the following letter Label the wires with the following letters Terminal function
RC RC 2 V Power (Cooling)
RH, R, R5, 5 RH 2 V Power (Heating)
C C 2 V (Common) from Equipment Transformer
W, W1, W Heating Relay
Y, Y1 Y Cooling Relay
G G Fan Relay
O O Reversing Valve
(for heat pump applications energized in Cool mode)
B B Reversing Valve
(for heat pump applications energized in Heat mode)
Installation

Non-Programmable Single Stage Thermostat
Reference No.: HTW-ST01-A
- 3 - Version 2019-1.0
Tip: Worrie about having your wires falling into your wall?
Keep the wires secure by wrapping them aroun a pencil.
4. Identify jumper wire
On your old thermostat, if… Then, on your new thermostat…
Terminal RC and RH are connected with a jumper wire Leave the jumper wire in its place
There’s only one R wire (RC, RH, R or R5) coming out of the wall Leave the jumper wire in its place
Terminal RC and RH (or 5 or R5) are NOT connected by a jumper wire
Remove the jumper wire between RC and RH
For terminal Y an W:
If you have a heat pump with reversing valve, connect Y an W with a jumper wire on your new thermostat.
5.Remove old thermostat base
With all of your wires isconnecte an properly labele , you may now safely remove the thermostat base from your wall.
************************Mounting and Wiring Your New Thermostat************************
1.Install new thermostat base
2.Connect wires to corresponding terminal blocks
Match each labele wire to it’s correspon ing terminal on the mounte thermostat base. Insert each labele wire into the hole of
it’s matching terminal, an using the screw river, tighten the screw on the terminal block securely.
3.Set switch and advanced wiring
4.Install the batteries and attach front cover
Install 2*AA alkaline batteries an push the front cover on to the thermostat base until it’s secure.
5.Turn on power
Turn on your power at the source.
Congratulations!
You’ve completed the thermostat installation process
Identify and label each wire
IGNORE WIRE COLORS:
Use terminal screw designations
to identify wires.
Mount your new thermostat base using screws. Drill holes an insert wall
anchors to secure the thermostat base to the wall, if necessary.
If you have either a gas or oil furnace, set the switch to GAS.
If you have an electric furnace, set the switch to ELEC.

Non-Programmable Single Stage Thermostat
Reference No.: HTW-ST01-A
- 4 - Version 2019-1.0
******************************Check Thermostat Operation******************************
Fan operation
If your system oes not have a G terminal connection, skip to 5.2 Heating system.
Move FAN switch to ON position. The blower shoul begin to operate.
Move FAN switch to AUTO position. The blower shoul stop imme iately.
Heating system
Move SYSTEM switch to HEAT position. If the heating system has a stan ing pilot, be sure to light it.
Press  to a just thermostat setting room temperature. The heating system shoul begin to operate.
Press  to a just temperature setting below room temperature. The heating system shoul stop operating.
Cooling system
Move SYSTEM switch to COOL position.
Press  to a just thermostat setting below room temperature. The blower shoul come on imme iately on high spee ,
followe by bol air circulation.
Press 
to a just temperature setting above room temperature. The cooling system shoul stop operating.
Typical Wiring iagram









Non-Programmable Single Stage Thermostat
Reference No.: HTW-ST01-A
- 5 - Version 2019-1.0
Setting the temperature
Set the SYSTEM switch to either HEAT or COOL, then press the ▲ or ▼ button until the temperature you want to maintain is
shown on the right si e of the isplay. If you want to turn the system off, just move the SYSTEM switch to the OFF position an the
FAN switch to the AUTO position.
 Clock setting
Move the SYSTEM switch to the OFF position, then press an hol the ▼ buttons for 5 secon s to enter the clock setting mo e. The
isplay will show the HOUR setting first . Use the ▲ button to select each user setting. Press the ▼ button to shift to the next menu
item ( MINUTES,WEEK DAY).Use the ▲ button to select each user setting also.
Move the SYSTEM switch to the HEAT or COOL position to exit the setting menu. If no buttons are presse within 15 secon s , the
thermostat will exit the configuration menu.
 Filter review
Move the SYSTEM switch to the HEAT or COOL position, then press an hol the ▲ an ▼buttons for 5 secon s to review filter
running ays.To exit the review menu press the ▲ or ▼ buttons one time. Or If no buttons are presse within 15 secon s, the
thermostat will exit the configuration menu.
In review mode, press and hold the ▲ and ▼ 15 sec. to clean the filter warning. It will show “dEF” blink.
 Child Lock
Quickly an simultaneously press the
▲
an
▼
three times to lock the temperature a justment, an again to unlock.
 RESET function.
This function can help operator to recovery system when fault happene , isplay out of or er or system halte . Please use a pin
to insert in button RESET hole till soun e click, then loosen it.
Move the SYSTEM switch to the OFF position, then press an hol the ▲ an ▼ buttons for 5 secon s to enter the configuration
menu.
The isplay will show the first item in the configuration menu. Press the ▼ button to shift to the next menu item. Use the ▲button to
select each user setting. To exit the configuration menu an return to normal operation, move the SYSTEM switch to the HEAT or
COOL position. If no buttons are presse within 2 minutes, the thermostat will exit the configuration menu. The configuration menu
chart summaries the configuration options. An explanation of each option follows.
Step Press Buttons isplayed ( efaults) Select by ▲ or▼ escription
1 ▲ & ▼ 5
seconds CC (FA) FA or SL
Select (FA)st or (SL)ow
cooling cycles, Default =
FA
-Note 1
2 ▼ HC (FA) FA or SL
Select F(ast) or (S)low Heating
cycles. Default = FA
-Note 1
3 ▼ HO (0) 0 or 1
Select system heating type:
0 = Gas, oil, or electric heating.
1 = Heat pump heating.
Default = 0
Thermostat Operation
Configuration Menu
The configuration menu allows you to set certain thermostat operating characteristics to your system or personal
requirements. It is also calle as ISU(Installation Set-Up) process.

Non-Programmable Single Stage Thermostat
Reference No.: HTW-ST01-A
- 6 - Version 2019-1.0
4 ▼ bL (2) 1 – 3
Select isplay backlight :
(1) = OFF.
(2) = 30 secon s on any
button push.
(3) = ON.
Default = 2.
Option (3) can be activated
only if the common is used.
-Note 2
5 ▼ FL (00) 00, 1 thru12
Select filter time in months.
Default = 00.
A selection of “00” eactivates the
filter feature.
-Note 3
6 ▼ FC (F) F or C
°F or °C isplay. Default = F
7 ▼ CL (0) +4 TO -4
Select temperature calibration
point up to 4° higher or 4°lower.
Default = 0
8 ▼ CP (5) 0 or 5
Compressor Lockout delay.
0 = none, 1= 1 Min
2=2 Min 3=3 Min
= Min 5 = 5Min
Default = 5
-Note 4
Notes:
1. The FA setting is used to produce shorter Heating/Cooling cycles. The SL setting produces a longer Heating/Cooling cycle.
Both settings produce very accurate temperature control and can be set to your personal pre erence. FA cycles the system
at a 0.5ºF (0.5ºC) di erential, and SL cycles the system at 1.5ºF (1.5ºC).
2. When operated rom batteries only, the LCD display backlight will be illuminated less than 5 seconds a ter each button
pressed, options (2) & (3) will operate the same when terminal “C” is not connected.
3. The thermostat will display the Filter Alarm a ter a set time o operation. This is a reminder to change or clean your air
ilter. This time can be set rom 0 to 12 months in 1 month increments. Selection o 00 WILL CANCEL THIS FEATURE.
When Filter Alarm is displayed, you can clear it by pressing the ▲ and ▼ buttons. This resets the timer and starts
counting the days until the next ilter change.
4. Select compressor lockout delay 0,1,2,3,4,5 To protect the compressor rom short cycling, you can select compressor
o -time cycle between 0 to 5 minutes. When the thermostat compressor time delay occurs, the Cool On or Heat On display
will lash during compressor lockout.
 Always turn off power at the main power source by removing the fuse, or switching the circuit breaker to the off position before installing,
removing, cleaning, or servicing this thermostat.
 Use this thermostat only as escribe in this manual. Rea all of the information in this manual before installing this thermostat.
 Use a professional personnel / installer to install this thermostat.
 This is a 24VAC low-voltage thermostat, o not install on voltages higher than 30 vac.
 ALL wiring must conform to local an national buil ing an electrical co es an or inances.
 Do not short (jumper) across terminals on the gas valve or at the system control to test installation.
This will amage the thermostat an voi the warranty.
 Do not switch the system to cool if the temperature is below 50ºF (10ºC). This may amage the air con itioning system.
 Replace batteries when the battery icon in icates the low battery message.
 Change the Air Filter when the Filter Change Icon begins blinking.
Important Safety Information