Diagram #6A: Forced Air Furnace having a replacement air supply duct together with and exhaust fan controlled by a designated ventilation switch and/or bathroom timer.
1. Replacement Air Control Damper (HAC-0x10-OPO)
2. Ventilation Switch and/or bathroom timer to supply Controlled 120Vac to furnace area
3. An optional ON/OFF Switch.
4. Relay Adaptor (ADP-1101-05A) to function as a control centre.
1. Furnace fires with thermostat signal. 2. Ventilation Switch and/or bathroom timer turns on the Ventilation Fan, the Furnace Fan and opens the Ventilation Damper simultaneously with the damper connected to Adaptor Terminal #1. 3. Optional Switch (i.e. toggle switch, timer, de-humidistat) connected between #1 and #2 of the Adaptor allows full control of the Replacement Air Damper to open as required.
N.B. Replacement Air Damper is not affected by the ‘Manual’ setting of the furnace fan.
1019 - ld Printed in Canada