IOM SYSVRF2 AHU BOX0620 20220209 134828067 20220209 140819162

10
Figure 3-10
Figure 3-11
Figure 3-13
Figure 3-12
3.6 Electrical Connection
Installation of tube temperature sensors T2A, T2 and
T2B
1. Weld the sleeves of the temperature sensors at the
designated mounting location.
2. Insert the temperature sensor into the sleeve after
inserting the buckle.
2. Apply insulation materials and secure with cable ties.
1
2
1
2
Welding
45
1
2
45
3
1
2
45
4
3
1
2
45
4
3
5
6
Mounting location of indoor temperature sensors T1 and
TA
Return Air Exhaust Air Outdoor Air Supply Air
A : Inlet air temperature T1
B : Outlet air temperature TA (optional)
B
A
Using an extension cord with the temperature sensor to
allow long distance connection
The attached extension cord of the temperature sensor
is 9 m long. If an extension cord is required, connect one
end of the cord to the AHU control box and the other end
to temperature sensor mounted on the AHU.
1. The ODU and AHU control box should use
separate power supplies with rated voltage.
However, the AHU control box and other AHUs
in the same system should use the same power.
2. The external power supply to the air
conditioner should have ground wiring, which is
linked to the ground wiring of the AHU control
box and ODU.
3. The wiring work should be completed by
qualified persons according to circuit drawing.
4. The fixed connecting lines must be equipped
with at least 3 mm of electric shock spacing.
5. A leakage protector should be installed in
accordance with the local electrical standard.
6. Be sure to properly locate the power wiring
and the signal wrings to avoid causing
cross-disturbance and their contact with the
connecting pipe or stop value body. Generally,
do not twist two wirings together unless the joint
is well-soldered and covered with insulator tape.
7. Do not turn on the power until the electrical
wiring have been correctly completed.
CAUTION