ERV & HRV: User and Installer Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
9
Electrical Connection to Optional Auxiliary Wall Control
Electrical Connection to Bathroom Override Optional Auxiliary Wall Control
A200576
When configurating OVR option on the LCD screen, choose among
these 3 configurations: BAL (the unit remains balanced while providing
maximum airflow), PER (the unit is slightly unbalanced since the
distribution motor is in MAX speed while allowing maximum exhaust
ventilation) and DIS (the unit is unbalanced since air distribution is
constant despite a higher need in exhaust ventilation).
CONNECTION TO THE FURNACE/AHU
A200577
Fig. 16 – Furnace/AHU Wiring Connection
UNIT OPERATION USING A FURNACE/AHU
THERMOSTAT
If the thermostat is equipped with an optional ventilation output, it is
possible to use it to operate the unit. Choose among these 4
configurations: minimum (unit operating in MIN speed), intermittent
(unit operating in MIN speed 20 min/h then as per INT configuration
selection for 40 min), auto (unit operating according to outdoor
temperature) and maximum (unit operating in MAX speed) in DRY
option on the LCD screen when the VENT contact is activated. Refer to
for more details.
NOTE:
This dry contact option will override the main wall control so
we do not recommend to use a wall control and the thermostat together.
UNIT INTERCONNECTION WITH FURNACE/AHU
(R/C/G/GF)
These connections must be done if you want the unit to force the
furnace/AHU blower operation when ventilating.
NOTE:
These connections are required for installation configuration T-4
(INSTALLING THE DUCTWORK AND THE REGISTERS on p5)
.
SYNCHRONIZATION WITH AHU FUNCTION
The new ventilation technology allows synchronizing the unit operation
with the furnace/AHU operating time. It prevents unnecessary AHU
operating time while providing a better air distribution.
NOTE:
W and Y connections must be added to R and C connections to
inform the unit that the furnace/AHU is running.
Infinity
®
/Evolution
™
Control
Do not connect the Infinity® System Control or Evolution™ Connex™
Control directly to the ventilator, connecting the to the ventilator may
cause damage. If you have an Infinity® System Control or Evolution™
Connex™ Control, use one of the optional Main Wall Controls.
Please do not use NIM to connect to 12V terminal block on new
ventilator. The new ventilator terminals do not match up to the NIM
control terminals. Connecting the two controls may cause damage. Use
an optional Main Wall Control.
Synchronize the ventilator to the AHU using the following connections:
A210005
Fig. 17 – Infinity
®
/Evolution
™
Ventilator to AHU Wiring
This will close the connection between R and G which will turn on the
blower in the AHU when the blowers in the ventilator come on.
It is important to have the AHU and the ventilator synchronized for the
T-2, T-3, T-4 and T-5 duct configurations.
The Infinity® System Control or Evolution™ Connex™ Control cannot
command the ventilator in this configuration.
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage or
improper operation.
Never connect a 120V AC circuit to the terminals of the furnace/AHU
interlock (standard wiring). Only use the low voltage class 2 circuit of
the furnace/AHU blower control.
