User Manual
SB-DN-MAC01.331
HVAC Controller – User Manual
3
4.2 Device Description
a) Relay 1,2,3 for mode connection
b) H,M and L=connect to Fan motor , COM2=AC220-240V
c) Manual control button for mode and fan speed.
d) Programming button.
e) DC0-10V for fan control, and digital temperature sensor input port.
f) F,G,H,I and J are HDL Buspro interface.
4.3 Precautions
HVAC systems draw large amounts of electricity when in use, which means that improper
installation can result in a risk of electrical fires, shocks and short circuits. Some states
have specific building codes that govern HVAC systems, including their wiring. Electrical
codes also apply to HVAC wiring and require electricians and builders to use wires and
devices that are compliant and safe.
Safety Precautions
It is recommended that the power input be connected to a MCB, or suitable fuse.
When installing the module do not exceed a tightening torque of 0.4Nm.
The power cable(relay output) should be
：
0.75mm
2
to 2.5mm
2
wire.
The module should be mounted inside a distribution box.
Care should be taken when connected the module to the Bus interface.