Lifebreath 95MAX - Manual (Page 13)

Operating the ControlAir 15
Plugging in the HRV/ERV energizes the unit. A self test
function will be performed every time the HRV/ERV is
energized (refer to “Self Test” for more details). After
the self test has completed successfully the HRV/ERV
will default to Speed 1. This is the factory default
setting. Follow the instructions found on the HRV/ERV
door to select desired mode and speed, or refer to the
instructions found on the following page.
Removing and relocating the Control Pad
The Control Pad can be removed and installed in a
remote location (100’ wire length max). The Control Pad
can be installed in a 2x4 box with a “Decora” type cover
plate or can be installed in the optional “Ventilation
Dehumidistat” or “Air Sentry”. When the Control Pad is
installed in a remote location, all optional controls will still
be wired to the Control Module on the HRV/ERV. When
remotely mounted on its own, the Control Pad is wired to
the Control Module by 3 wire (min. 20 gauge). Connect
the colour coded terminals to the corresponding terminals
on the Control Module. When the Control Pad is remotely
mounted in the Ventilation Dehumidistat or Air Sentry,
refer to optional controls page for wiring requirements.
Self Test
Each time the HRV/ERV is powered/energized the self
test function will automatically initiate. During the self
test the HRV/ERV will cycle through all the speeds
available (1-5), test the damper motor operation and will
default back to the previous mode/speed selection,
(factory default is Speed 1). Total self test duration is
approximately 1 min. 30 sec.
Automatic Defrost Operation
(Not on all models)
The advanced technology of the digital microprocessor
automatically activates the defrost system only as it is
needed. To be an efficient heat recovery device, the
HRV/ERV must effectively provide for core defrost as well
as providing efficient heat exchange. As outdoor
conditions cool, the temperature sensor (thermistor) tracks
the supply air temperature. The thermistor then sends its
signal to the microprocessor (circuit board) which initiates
only the defrost cycle time required to clear the core. On
recirculating defrost models, the core is defrosted when
the supply air port is automatically blocked off and exhaust
air is redirected back through the HRV/ERV. On damper
defrost models, the core is defrosted when the supply air
port is automatically blocked off and the warm air sur-
rounding the HRV/ERV is drawn in through the defrost
port. The mode indicator will flash RED during the defrost
cycle. This dramatic advance makes more energy avail-
able for recovery as the unit spends less time in defrost
mode. By optimizing the defrost cycle, the HRV/ERV com-
bines money saving performance with a well designed and
reliable control system.
Glossary
DEFROST MODE - to ensure reliable operation during cold
weather, the HRV/ERV will automatically cycle through its
defrost mode as needed. (not on all models)
DEHUMIDISTAT - a control device that senses the amount of
moisture in the air and will activate high speed fan operation
when the air moisture level exceeds the control setting. The opti-
mum air moisture level (or relative humidity [Rh]) in the typical
home is in the range of 30 to 50% Rh.
RESET - whenever resetting of the HRV/ERV is required, sim-
ply disconnect power for 30 seconds.
STANDBY MODE - the HRV/ERV is energized and waiting for
fan operation to be initiated by a remote device or manual over-
ride.
THERMISTOR - the HRV/ERV's temperature sensor which
measures electrical resistance in a known manner, as out-
door temperatures fluctuate.
ControlAir 15
Exploded view
Control Module
Control Pad
13
Function & Controls