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4 32-5042-02
User’s Information
PERCENT TIMER CONTROL (PT)
The Percent Timer Control automatically energizes and de-
energizes the energy recovery ventilator every hour, ensuring
ventilation for the home around-the-clock. The PT control has
two status lights (See Figure 2). One is the power light
located in the upper left hand corner of the control. The other
light will be one of the Runtime % lights. The power light is
on whenever the PT control is calling for the ERV to run. The
Runtime % light is located along the right side of the control.
The Runtime % light indicates the amount of time per hour
the ERV will operate. Set the control per your local code or
ASHRAE Std 62.2 and your ventilator will run once every
hour.
FOR CONSTANT OPERATION: Press the fan icon until
the 100% light is on. The “Runtime %” light turns on. The
ERV unit will run continuously.
FOR MINIMUM VENTILATION REQUIREMENT
OPERATION: Set the control at the percentage that meets
local code or ASHRAE 62.2. Press the fan icon until the light
for the percent desired is on.
TO TURN THE ERV OFF: Press the fan icon until all lights
are off. The control is off. The ERV motor is de-energized.
(Power is still persent inside the unit. Always unplug cord
from outlet before servicing!)
GENERAL SETTINGS: For systems installed in an
area with high humidity. The Percent Timer should be
set to deliver the Minimum Ventilation Requirements.
VACATION SETTINGS: For systems installed in an
area with high humidity. If the A/C system thermostat
setting is elevated or set up while on vacation or for
extended periods of time (over 2 days), the Percent Timer
and ERV should be turned OFF. After returning from
vacation or when the system thermostat is lowered to
normal daily setting, the Percent Timer and ERV should
be reset to the previous runtime %.
WHEN WINDOWS ARE OPEN: When windows are open
in your home the Percent Timer and ERV should be turned
OFF.
NOTE for ERV systems with more than one
control:
Another control may be causing your ventilator to run -even if
the runtime % light on this control is off. If you wish to keep
your ventilator from running, check that none of your controls
are calling for unit operation.
Installation
1. Install control in a standard 2" x 4" electrical box, with a
minimum depth of 1.5", with the two screws provided.
2. Wire Size: 18 gauge, no more than 500 feet. Wiring is
non-polar.
3. The two wires from the ERV should be attached to the ‘C’
and ‘R’ positions on the terminal block on the back of the
PT Control. See Figure 13.
4. Use Lutron Decora™ cover plate to complete the installa-
tion (supplied by installer).
PUSH BUTTON POINT-OF-USE
CONTROL (OPTIONAL
ACCESSORY)
For use with all ERV models
Operation
The Push Button (PB) Point-of-use Control lets you manually
turn on your energy recovery ventilator for a short period of
operation – for example, when you are using a bathroom. The
PB Control must be connected to a PT control to operate.
20-40-60 minute ventilation control:
Press the fan icon and your ventilator will run for 20 minutes
(See Figure 3). Press again and the unit will run 40 minutes.
A third press provides for 60 minutes of operation. Percent
Timer Control does not need to be on for the PB Control to
operate the ERV unit.
You can cancel a cycle at anytime. Just press the fan icon and
hold for about five seconds.
You can start another cycle by pressing the fan icon.
NOTE for ERV systems with more than
one control:
Another control other than the push button may be causing
your ventilator to run. If you wish to keep your ventilator from
running, check that none of your controls are calling for unit
operation.
Installation
4. Install control in a standard 2" x 4" electrical box, with a
minimum depth of 1.5", with the two screws provided.
5. Wire Size: 18 gauge, no more than 500 feet. Wiring is
non-polar.
6. Two wires from the PB Control should be attached to the
‘PB” positions on the terminal block on the back of the
Percent Timer Control.
7. For two PB controls, one wire from each can be twisted
together and inserted into a single position on the
terminal block on the Percent Timer Control. The wires
must be a 18 gage solid wire. If more than two PB
controls are attached or 18 gage stranded wire is used
then pigtails must be inserted into the ‘PB’ positions on
the Percent Timer Control and the leads attached to the
pigtails with wire nuts.
8. Use Lutron Decora™ cover plate to complete installation.