Quantech QTH1 0035, Quick Start Manual, Page: 11 / 20

Setting the date and time
1. In access level O, press HMI in the menu and se-
lect Date Time Setpoint .
2. Set the date and time and press Confirm .
Setting a schedule
1. In access level O or S, press Schedule in the
menu.
2. Press the + icon to add a new item.
3. Configure the settings using the icons on the right.
• Press the - icon to delete an item.
See the following figure for an example of the screen.
Figure 9: Setting a schedule
Setting the water temperature control using
entering water temperature (EWT) or leaving water
temperature (LWT)
1. In access level O, press System Setpoints in the
menu.
2. Select Cooling/Heating Control Select .
Setting a setpoint
1. In access level O, press System Setpoints in the
menu.
2. Configure the target liquid temperature setpoints
in Cool/Heat EWT Setpoint or Cool/Heat LWT
Setpoint .
3. Set according to cooling/heating control selection.
• For setpoint temperature less than 40°F
(4.4°C), see Low temperature leaving alarm
on page 12 .
Setpoint temperature less than 41ºF (5ºC) :
To work with setpoints between 40ºF (4.4ºC) and 14ºF
(-10ºC), use glycol liquid with the correct concentra-
tion in the water system and configure the micro DIP
switches SW302-3 and SW302-4 on the control board
in the control panel to glycol mode. See Figure 11 on
page 12 for more details. If you need year-round
cooling in low ambient temperature less than 41℉
(5℃), Quantech suggests using glycol liquid.
Figure 10: Setpoint temperatures less than 41ºF (5ºC)
Condition SW302-3 SW302-4 Note
Glycol Off Off –
Standard Off On Default
48ºC
COOLING MODE
-10ºC 4.4ºC 20ºC
Leaving water cooled temperature
Ambient temperatur
e
-20ºC
Quantech
11
Form QTH1-QSG1
Issue date: 12/20/2023