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• Ventilation • Heat reclaim ventilation
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• Heat reclaim ventilation • VAM-FA/FB
14
Optional accessories
14 - 3 BRP4A50: Heater control kit
Installation example
Wiring
Note:
Make sure to install TH3 and TH4 for safety.
Test 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 control of each unit (remote control for air conditioner, central control unit,
etc.) for conducting a trial operation.
Symbol
Part
Installation Place
52H
Relay
Install a relay box at site
Field supply
EH
Electric heater (Bimetal switch, Temperature fuse, Thermal cut out etc. (built in)
Duct
Field supply
TH3
Temperature thermostat (ON when the temperature is at or below –10°C)
Duct (front of EH)
Field supply
TH4
Temperature thermostat (OFF when the temperature is at or more than 5°C)
Duct (behind EH)
Field supply
(HC0223)
Return Air
Supply Air
Exhaust Air
Outdoor Air
HRV
Adapter
BRP4A50
Temperature thermostat (Field supply)
(Heater OFF when the temperature is at or more than 5
°
C)
Temperature thermostat (Field supply)
(Heater ON when the temperature is at or below –10
°
C)
Power supply (Field supply)
Relay box
Preheater
(Field supply)
NFB2
52H
BRP4A50
TH3
TH4
X9A
X10A
L
N
52H
(HC0224)
Power
supply
for
electric
heater
Electric heater (EH)
Thermal cut out (150
°
C)
Bimetal
switch
(85
°
C)
Temperature
fuse (120
°
C)
Preheater
(Option)
HRV
(printed circuit board
Power
supply
for HRV units
Temperature thermo.
(ON when the temperature is at or below –10
°
C)
Temperature thermo.
(OFF when the temperature is at or more than 5
°
C)
