Advertisement
Fresh-up operation
Purposes
When combined with a local ventilating fan (such as the one in toilet
and kitchen), the air flow rate of HRV is balanced by either fan
operation or exhaust operation.
However, a circuit with voltage and low current (16 V, 10 mA) is
formed between JC and J1, so a relay with low-load contact point
must be used.
Functions
The unit performs overcharged operation to prevent back flow of
odour.
Necessary parts
Operation contact of exhaust ventilating fan (Field supply)
Example of control wiring
1
2
1
Connecting line can be extended
up to 50 m maximum
2
(Field supply)
System description
1
1
Local ventilating fan
The local setting by the remote
controller for the air conditioner
(Refer to
"Local setting" on page
Fresh-up "OFF" (Factory setting)
Fresh-up "ON"
T
EST RUN
After completing the installation of the system, check again to make
sure that No error was made in wiring or switch setting on the printed
circuit boards of the HRV units.
Then, turn on the power of the HRV units. Refer to the manual of the
remote controller of each unit (remote controller for air conditioner,
central control unit, etc.) for conducting a trial operation.
Installation manual
17
HRV
J1
JC
3
3
Printed circuit board
2
HRV
2
Power supply
"J1", "JC"
"J1", "JC"
10)
normal open
normal close
Normal
Fresh-up
Fresh-up
Fresh-up
N
OTES
VAM150+250FC
Total Heat Exchanger
HRV (Heat Reclaim Ventilation)
4P415946-1 – 2015.08
Advertisement
