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4.6.1. Bypass Humidifier
A bypass humidifier should be wired directly to the furnace or fan coil
HUM and 24VAC COM terminals. The Evolution Connex Control will
automatically energize the HUM output during a call for humidification.
4.6.2. Fan Powered Humidifiers
Most fan powered humidifiers produce internal 24VAC in order to
energize upon a switch or contact closure. For this application, a 24VAC
N.O. Isolation Relay (DPST) MUST be used to prevent mixing the
internal humidifier power with the indoor equipment transformer.
Applying 24VAC isolation relay coil to furnace or fan coil HUM and
COM terminals will allow the Evolution Connex Control to
automatically energize the HUM output during a call for humidification.
The N.O. relay contacts will be used to energize the humidifier. See Fan
Powered Humidifier installation instructions for more details.
4.7. Ventilator Connections
A 120VAC ERV (Energy Recovery Ventilator) or HRV (Heat Recovery
Ventilation) may be installed with a translator board (SYSTXXXTRB01)
and either a NIM or a Zone board. It maintains a consistent indoor
temperature and circulating fresh air throughout your home. The BGRY
wires are connected to the respective BGRY of the zone board.
4.7.1. Energy Recovery Ventilator
Energy Recovery Ventilator (ERV) are ideal for warmer climates.
NOTE: ERVXXNVA provides limited features due to its simplified
control design.
4.7.2. Heat Recovery Ventilator
Heat recovery ventilator (HRV) are ideal for northern climates with a
longer cold-weather season, where excess moisture can be a problem.
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