Titon aura-t TP536/EU, Product Manual

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Frost Protection Program
Stage 1
Frost protection is achieved by the unit
detecting the outside air temperature
being drawn into the HRV and then,
below the trigger temperature,
enabling the duct heater. The duct
heater is then controlled proportionally
based on the temperature of the
exhaust air. This is pre-set to ensure
that the exhaust air temperature does
not fall below 2°C.
Stage 2
During very cold weather with the
duct heater activated, if the exhaust
air temperature falls below 0.5 degrees
C the duct heater will be de-activated
and the supply fan ventilation rate
stopped allowing the warmer air
extracted from the property to raise
the exhaust air temperature preventing
the formation of ice within the heat
cell. As temperatures rise the Frost
Protection Program will increase the
supply ventilation flow rate back to the
commissioned settings.
.
Shut Down of Supply Fan
This feature stops all ventilation and
overrides any other speed control
input when a problem with the exhaust
fan or associated ductwork causes
insufficient warm air to be available to
heat the incoming air supplied to the
property. The sensor monitoring the
Supply Air into the property will stop
both fan motors when this temperature
measures below 5˚C.
The Frost program icon will flash and
the fan speeds will display 0%. The
unit will remain off until the fan key is
pressed or the temperature increases
above 5˚C.
When the fan key is pressed the
unit will restart at full speed and
settle back to normal operation after
approximately 40 seconds. If the air
supplied to the dwelling is still below
5˚C Shut Down of Supply Fan mode will
stop ventilation again.
3 x Volt Free Inputs
Enables the connection of single pole
momentary switches, latching switches
or normally open relay contacts
to the HRV. These can be used to
switch between fan speeds or control
SUMMERboost® and Summer Mode.
2 x Live Switch Inputs
These inputs are used to switch the
HRV to Boost Speed via a switched live
input.
2 x Proportional Sensor
Inputs
Enables connection of environmental
sensors to the HRV which can be used
to proportionally control HRV fan
speeds.
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