Residential HRV/ERV
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In slave mode, an external device or switch will dictate when the unit will operate. This is the
case for VentZone® Systems, use of third party thermostats with built in HRV/ERV controls,
and use of external third party switches that are used to enable/disable the unit. Installations
requiring a switch to enable or disable the unit via a wall switch will need to be placed into
slave mode.
Note: While in slave mode, the recirculation function is replaced with the standby, or OFF,
condition. Aldes controllers which have this function will continue to work in all other modes,
but the recirculation mode is replaced with the standby mode. If recirculation is required, but
the HRV/ERV must be OFF by default, then install the unit in master mode and use the digital
multifunction control 611242-FC to put the unit into standby mode.
Enabling Slave Mode
In order to enable slave mode on your unit, you will need to move a jumper on the unit’s
printed circuit board. This can be done without any special tools following the directions
below.
Suggestion: is easiest to do this prior to installation, on a table with the unit on its back.
1. Disconnect the unit power cable to avoid electric shock or damaging the PCB.
2. Remove the unit’s terminal block by firmly pulling it straight out.
Removing the unit’s terminal block
