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Installation manual
19
VAM350~2000FC
Total Heat Exchanger
HRV (Heat Reclaim Ventilation)
4P415947-1A – 2017.08
Zone control system
 A maximum of 64 air conditioners and HRV units can be
connected to the F1 and F2 terminals.

The HRV units will turn on and off in along with the zone
operation command from the centralized controller.
Zone 2
The HRV units operate in the zone-linked mode, as described in the
section,
"Linked control with more than two groups" on page 17 . For
the initial setting, follow the procedure described in that section.

It is necessary to assign a central control group number to each
HRV unit and air conditioner.
Regarding the setting of the group number, refer to the section on
"the centralized control group number setting" in the operating
instructions of the Centralized controller. Refer to the section
""All"/"individual" control" on page 18 for the setting procedure.

For the ventilation air flow setting, follow the procedure
described in the section
""All" control" on page 18 .

For the zone setting from the centralized controller, refer to the
operating instructions of the centralized controller.

The centralized controller can be used to control the individual
units in the zone for ventilation operation.
Remote control
Monitor of operation
The operation of the HRV can be monitored from the outside by the
connection of the adaptor PCB for remote control BRP4A50A
(option).
Be sure to connect the terminal strip on the adaptor PCB for remote
control BRP4A50A (option).
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 voltaged and low current (16 V, 10 mA) is
formed between the 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
odor.
Necessary parts
Operation contact of exhaust ventilating fan (Field supply)
F1 F2
F1 F2
F1 F2
F1 F2
F1 F2
P1 P2
P1
P2
P1 P2
P1
P2
HRV 1
HRV 2
HRV 3
VRV
1
2
5
3
4
3
1 Zone 1 4 Connecting line can be extended
up to 1000 m maximum
2
Zone 2
5
Centralized controller
(DCS302C51)
3
Remote controller for air
conditioner
1
2
1 Operation lamp 3 Power source
2
Power source
4
HRV printed circuit board
Wiring adapter for remote contact BRP4A50A (option)