WIRING DIAGRAM
WR 600
Version: 2019-05-22 - MAICO VENTILATOREN, www.maico-fans.com - We are not responsible for mistakes or printing errors and retain the
right to make technical modifications without giving prior notice
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WR 600 ventilation unit with RSL 1 WR or RLS 2 F room air control and electric air
heater
If the heat recovery unit is installed in a passive-energy house, a heat register in the outside air is necessary, in order
to guarantee a permanent air exchange.
It preheats cold outside air and keeps the heat exchanger free of frost. The switch-on temperature of the TH 10 should
be set to -3#.
If the outside air temperature gets too cold, the external frost protection heating of the DRH 25-6 switches on and
guarantees an uninterrupted ventilation operation.
The switch-off difference should be set to 5 K. Optionally, the switch-on temperature can be adjusted manually using
the setting wheel at the TH 10.
The air flow controller sensor "S1" must be installed in the direction of flow, at least 30 cm ahead of the electrical air
heater. The TH 10 temperature sensor "R1" must be installed in the air flow direction, at least 50 cm after the electri-
cal air heater.
LW 9 - air flow monitor
S1 - air flow monitor sensor before the DRH..
JP1 - plug jumper on operating mode “H”. Relay switches on as the temperature drops.
TH 10 - thermostat
R1 - temperature sensor after DRH..
US 16 T- universal contactor
DRH 25-6 - electrical air heaters
S - sensor
We recommend the filter box TFE 25-4 (with G4 filter) to protect the electrical heat register against dirt. If a filter box is
used, the G4 filter in the outside air channel can be removed from the heat recovery unit.
A ground collector and brine-air heat exchanger can be used to keep the heat exchanger free of frost.
For external heat register, filter box, outside air and outgoing air channel: These must be diffusion-resistant insulated
to protect against condensation.