How The Dehumidistat Works - Lifebreath 350DCS Operation And Installation Manual

Optional Lifebreath Ventilation Control - Part #99-BC04
Key Features:
2 speed fan setting (LOW / HIGH)

Standby setting (fan OFF)

20/40 mode

Compatible with 99-DET02 Wireless Timers

Slim-line design

Connect to 3 wire 20 gauge low voltage wire

BC04 Operating Instructions:
Turning on the Control
Press and release the ON/OFF button
above will illuminate.
Setting the Ventilation Speed
Press and release the Fan button
both LO and HI indicator lights are off, the fan is OFF but will turn ON if required by a remote Timer (if installed).
Setting 20/40 Mode
After a fan speed has been selected, press and release the 20/40 button. The "Indicator Light" will turn ON and the control will
be in 20/40 mode.
20/40 mode is a repeating cycle. The fan will run at the set speed, LO or HI, for 20 minutes then turn OFF for 40 minutes.
Some units are equipped to Recirculate air in your home during the 40 minute cycle with no Ventilation. The control will
automatically detect this feature and Recirculate air during the 40 minute cycle at the selected fan speed.

How the Dehumidistat Works

Often today's well insulated and tight buildings will have
high indoor humidity levels during the heating season.
Visible condensation on windows indicates a high level of
humidity. The amount of condensation on the windows will
increase as outdoor temperatures drop.
Your HRV will reduce indoor humidity levels when outdoor air
is drier than indoor air. This usually occurs during the heating
season when outdoor temperatures are less than 15°C (59°F).
Your optional Lifebreath DXPL02, BC02 and BC03
Controls have an adjustable dehumidistat which can be set
to achieve a further dehumidification effect from your HRV.
High speed ventilation will be initiated upon exceeding the
dehumidistat set point regardless of the mode and speed of
operation. Once the humidity in the building is reduced, the
HRV will revert back to its previous setting.
We suggest operating the HRV for the first few days without
use of the dehumidistat
further dehumidification
dehumidistat operates in % of RH (relative humidity) with 60
being high and 20 being low. If, after a few days, further
dehumidification is required (the building is still too humid), set
the humidity level to a lower amount.
. The light
to select LOW or HIGH fan speed. The corresponding "Indicator Light" will illuminate. If
function to observe
effect will be required.
20/40 Mode
Indicator Light
ON/OFF Light
ON/OFF Button
20/40 Mode
Button
The average person is comfortable between 30-50% RH. The
dehumidistat should be set to OFF for all seasons except
the heating season.
Dehumidistat Notes:
The dehumidistat function will be disabled if outdoor
temperatures exceed 15°C (59°F) for a 24 hour period.
The dehumidistat function will be re-enabled if the unit is
unplugged for 3 minutes or if the outdoor temperature
drops below 15°C (59°F) for a 24 hour period.
if a
The
10
Fan Speed
Indicator
Fan Speed
Button