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16. WIRING DIAGRAMS FOR FURNACE INTERLOCK SYSTEMS
STANDARD FORCED AIR
INTERLOCKING WIRING
A relay is normally used when tying
a ventilation system to the forced air
distribution system. Our Duotrol System
is equipped with an internal relay that
will activate the forced air system’
ventilator when there is a demand from
the HRV /ERV. The Duotrol System will
activate the INTERLOCK relay during
the following modes: Continuous,
Override,Recirculation and Defrost.
See wiring diagram.
ALTERNATE FORCED AIR
INTERLOCKING WIRING
Some forced air system thermostat
will activate the cooling system when
tied using the «Standard forced air
interlocking wiring».
If you have identify this type of
thermostat you must proceed with the
«Alternate Forced Air Wiring».
LOCATING THE
WIRING DIAGRAM
NOTE TO INSTALLER:
Wiring
Diagram for the entire line of HRV/ERV
Models are placed on the back of each
Exhaust motor bracket.
CAUTION:
Thermostat that control
A/C system must use the Alternate
Interlock Wiring Diagram.
Low Voltage HRV Controller
Low Voltage HRV Controller
Thermostat
Legend:
-------- Field Installed Low Voltage
Figure 16.1 Standard forced air wiring diagram
Figure 16.2 Alternate forced air wiring diagram
Legend:
-------- Field Installed Low Voltage
Force Air System
Force Air System
*Before tying the HRV/ERV to
a forced air system, always
refer to system’s manual or
manufacturer.
WARNING:
Always disconnect the unit prior to making any connections. Failure to disconnecting the power could result in electrical shock or can
damage the electronic boards, wall controls and/or unit.
CAUTION:
Minimum wire requirements is LVT18 CSA/UL 4 strain to insure proper connection.
