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SYSTEM START-UP
CONSTANT ON OPERATION
OPERATION WITH HOME COMFORT CONTROL
™
(FIGURE 20)
OPERATION WITH 8120 VENTILATION CONTROLLER OR
THIRD-PARTY CONTROL (FIGURE 20)
The Energy Recovery Ventilator has an on/off switch which enables the unit to be constantly on. There is also wiring access and wire leads
available in the unit for connection to the Aprilaire Home Comfort Control
™
, Aprilaire Model 8120 Ventilation Controller, or any third-party
24VAC, dry contact, normally open external control to allow the unit to provide fresh air when needed in accordance with the 62.2-2010 ASHRAE
Standard. The 62.2-2010 ASHRAE Standard uses home size and the number of bedrooms to determine the required ventilation rate.
1. Plug in the power cord to a 120VAC grounded outlet.
2. Turn on/off switch on.
1. Remove the front panel of the ERV.
2. Remove the wire nut from the two yellow wires.
3. Run 2-wire cable (18-24 AWG) from the ERV to the Home Comfort
Control
™
.
4. Insert the wire through the ERV wire access port.
5. Use wire nuts to connect each end of the 2-wire cable to each of
the yellow wires from the ERV.
6. Replace the ERV front panel.
7. Connect the other end of the 2-wire cable to the VENT terminals
of the Home Comfort Control
™
.
8. Reference the Home Comfort Control
™
Installation Instructions to
set the ventilation timing per the 62.2-2010 ASHRAE Standard.
9. Plug in the ERV.
10. Turn the on/off switch ON.
1. Remove the front panel of the ERV.
2. Remove the wire nut from the two yellow wires.
3. Run 2-wire cable (18-24 AWG) from the ERV to the 8120 or
Third-Party Control.
4. Insert the wire through the ERV wire access port.
5. Use wire nuts to connect each end of the 2-wire cable to each of
the yellow wires from the ERV.
6. Replace the ERV front panel.
7. Connect the other end of the 2-wire cable to the A/A terminals
of the 8120 Ventilation Controller. If using a Third-Party Control,
reference the Third-Party Control Installation Instructions to
connect to the control.
8. Use the tables below to determine the airflow requirement and
cycle time to meet the 62.2-2010 ASHRAE Standard.
a. Table 2 on the following page shows the required ventilation
rate in CFM.
b. Table 3 on the following page shows the required ventilation
cycle time in minutes based on a 1 hour cycle using the airflow
determined in Table 1.
9. Plug in the ERV.
10. Turn the on/off switch ON.
HOME COMFORT CONTROL
™
OR
THIRD-PARTY CONTROL,
24 VAC, DRY CONTACT,
NORMALLY OPEN
APRILAIRE MODEL 8120
VENTILATION CONTROLLER
OR
YELLOW WIRES
RELAY
TRANSFORMER
A/A
VENT
VENT
FIGURE 20 – Wiring to External Control
90-1749
10