Programmable Thermostat 819H
First of all, the AC819 series heating thermostats are with weekly programmable cycle and LCD screen display function. Consequently, it can be set up six times a day with the corresponding set temperature
of heating room temperature controller, and also can choose the mode of manual control or temporary control. The thermostat is recommended for the control of electric under floor heating.
Parameter of Programmable Thermostat 819H
In contrast with other thermostats, this model has dual function.
Voltage: 220V, 50/60HZ
Current: Imax3A/16A/20A/30A (depend on choices)
Power consumption: ~1W
Switch differential: 1 degree
Setting range: 5 degree – 35 degree
External limitation: 20 – 60 degree (external sensor)
Accuracy: +-1 degree
Ambient condition: -5 – 50 degree
Function: Three mode for Programmable Thermostat 819H
Manual mode, it can control the device by manual.
Programmable mode, it can be controlled automatically by the set time and temperatures (with six different time & related temperature). see below
Simultaneous display: For temporary control mode, Press up and down arrow under the programming mode will change to this mode, the device will come out of the
temporary current period time control and under the control of the manual mode and it will automatically return to the programming mode when the next period time comes.
(sun): wake up (am), event 1 (house): leave (am), event 2 (house): return (am), event 3
(house): leave(pm), event 4 (house): return(pm), event 5 (moon): sleep(pm) event 6
Locked, press the up and down arrow together for 5 seconds, the device locked, and press them again for another 5 seconds, it will unlock.
Hence, the heating will switch on now.
Front key function:
Power button: On/off for the Programmable Thermostat 819H
Mode: to change to manual mode or programming mode
Clock button: Time, press this key with short time to change the time setting. Minutes setting-hour setting-week setting, by pressing clock button come to next step
arrow up and down for parameter up & down. After all settings completed, keep waiting for 10 seconds, it will keep records.
Up and Down arrows: to increase or decrease.
Under the power on, press the clock and power together for 5 seconds, it comes to weekly programming mode and setting as: the first period time setting from Monday
to Friday – the first period temperature setting from Monday to Friday – the sixth period time setting from Saturday to Sunday – the sixth period temperature setting
from Saturday to Sunday.
Press square button after every parameter setting then come to next step for setting the flash parameter by means of up and down arrow key. Each step lasts for 1 minute
and will keep record in 10 seconds.
Finally, these settings will be saved in the memory and consequently it rolls over until you change it.
For even more details, check for following video.