HaiLin Controls
Beijing HaiLin Auto Controls Equipment Co., Ltd. Page 1 of 2 Tel: +86 10 8070 2235
Shahe Industrial Zone, Changping District www.hilin.com
HA202 Thermostat User Manual
HA202 is an electronic and very easy manipulated thermostat specially for
heating system, with relay to control electric thermal heating valve open and
close. When temperature is 2 lower than set point, electric thermal heating
valve will be open while LED light tells the working state, LED light shows orange
color. When room temperature reaches set point, electric thermal heating valve is
closed as LED light shows red color, while the thermostat is still working. When
turn the knob to OFF, thermostat will power off with LED light power off. This
function makes thermostat safe and saving energy.
BASIC FEATURES
Room temp. Setting
Control electric thermal heating valve on/off
LED indicates working state
SPECIFICATIONS
Set-point range: 5
30
Switch current rating: Resistive:
<
3 A
Inductive:
<
0.5 A
Power: AC 220V
10%, 50/60Hz
Size: 8
86
33 mm ( W
H
D )
Hole pitch: 60 mm ( Standard )
OPERATION INSTRUCTION
Set point: turn the adjusting knob to the desired temperature.
Control of N/O electric thermal heating valve: when room temp reaches the set point, turn off electric thermal
heating valve (or electric valve) automatically; when temp is lower 2 than set point, turn on electric thermal heating valve
(or electric valve) automatically.
Control of N/C electric thermal heating valve: when room temp is lower 2 than set point, turn on electric thermal
heating valve (or electric valve) automatically; when temp reaches the set point, turn off electric thermal heating valve (or
electric valve) automatically.
Control of power supply for thermostat: When turn knob to OFF, LED red light turn off, power supply of thermostat
is turn off.
Meaning of double color LED light: LED with red light, tells thermostat stand-by; LED with orange color while red
light, green light turn on simultaneously, tells thermostat is working.
WIRING DIAGRAMS
Power OFF
LED light
Temp. Scale
Temp. knob
NC Valve
L
NO
NC
NO Valve
N
AC 220V 50/60Hz
L N
HA202 Thermostat
