8
Status Display Indicator Lights
The LED indicator lights illuminate to indicate the current active mode of
operation. The defrost indicator will illuminate when the HRV cycles into the
automatic defrost cycle; this occurs at a predetermined cycle time whenever the
outside air stream entering the HRV is colder than -3°C (26°F).
Defrost Cycle
Your HRV is equipped with electronically controlled damper defrost. When
the outdoor temperature entering the HRV drops below -3°C (26°F) the defrost
timer is activated. After approximately 30 minutes of ventilation (during which
time the core unit may experience some frost build-up during the heat recovery
process) the timer activates the damper door mechanism which closes off the
fresh air supply port, opens the defrost port and the defrost led illuminates.
After approximately 5 minutes of defrosting the recovery core, the damper door
reverses direction and reopens the fresh air port and the unit returns to normal
operation and the defrost led turns off. The cycle will repeat itself until the
outdoor temperature entering the HRV rises above -3°C (26°F).
Internal Dehumidistat
This control regulates the desired amount of humidity in your home during
the heating season. By simply adjusting the rotary knob on the HRV, varied
levels of relative humidity can be selected.During the colder months of winter,
the Internal Dehumidistat should be set to an industry recommended comfort
range of 30% to 40% relative humidity (R.H.). If the house feels too dry, then
adjust the setting higher and if too damp, then adjust the setting lower.During
these colder months, the Internal Dehumidistat should be set lower if excessive
moisture develops on the windows. In the warmer months, when the outdoor
humidity is equal to or greater than the indoor humidity, the dehumidistat should
be turned to the OFF position.
