24VAC vent switch and replacement air opens during firing
HMI Hoyme Manufacturing Inc. Special Note: Circuits are colored for clarification only and are not necessarily those found in actual installations.
Diagram #8: High-efficient Forced Air Furnace plus AC (If applicable).
ADDED: 1. Replacement Air Control Damper with Relay (HAC-0x11-OPC)
2. Ventilation Switch to supply Controlled 24VAC to furnace area.
3. Relay Adaptor (ADP-0241-05A) to function as a control centre.
OPERATION: 1. Replacement air damper opens to provide fresh air during furnace firing. 2. Ventilation Switch turns on Ventilation Fan, opens Replacement Air Damper and turns on Furnace Fan simultaneously without interfering with the Air Conditioner. 3. Optional Switch (i.e. toggle switch, timer, de-humidistat) allows full control of Replacement Air damper to open provided it is a PC type.
0620 Printed in Canada
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