12
Speed Settings
The Lo-Carbon PureAir home has three speed settings, ‘
Trickle
’, ‘
Energy Recovery’ and ‘Purge’
.
•
‘
Trickle
’ speed is automatically selected when the ambient loft temperature is
below 18
°
C
.
•
‘
Energy Recovery
’ is automatically selected when the ambient loft temperature is
between 18
°
C and 27
°
C
.
•
If the ambient loft temperature exceeds 27
°
C, the Lo-Carbon PureAir home automatically switches to
standby (no airflow) - except when
Radon Mode
is enabled. See Radon Mode below for more details.
•
‘Purge’
boosts the fan to max speed for the time the remote switch is active, plus the set overrun time (once
deactivated).
There are 5 pre-set speeds that can be selected based on number
of bedrooms in the property. For example, setting b03 being for a
three bedroom dwelling. Please see
Fig.14
for the approximate flow
rates at each setting.
Alternatively, the speed settings are also fully adjustable between
10L/s and 60L/s via the manual speed setting option.
The PureAir home must be set to provide adequate ventilation
according to Part F of the building regulations.
*The table shows a set up representative of a good low resistance installation using the supplied filters.
When F7 filters and/or a long duct run are used it may be necessary to use the manual speed selection to
meet the required flow rate.
Lock feature
The
menu lock
feature will prevent the unit from being adjusted after commissioning as a pass code is required to
access the menu. This can be set in the menu to any 3-digit hexadecimal combination.
If the lock feature is enabled; when a button is pressed the display will show, – – –. At this point enter the 3-digit
code by first pr or – until the first digit is correct then press MODE to move to the next digit. Repeat until the
code is entered and press MODE to enter the commissioning menu. If the code is entered incorrectly, wait until the
screen switches off then press any button to begin again.
Radon Mode
Radon mode
keeps the fan running even at high temperatures to prevent the build-up of dangerous radon gas in the
property. If this is not required, it is recommended not to use this setting.
Trickle Speed Threshold
By reducing the
trickle speed threshold
the fan will run at higher speed more often (in Energy Recovery Mode), this
would be helpful in a property with persistent damp problems. However, will introduce the colder air at a higher rate.
Temperature Limit
Increasing the
temperature limit
will mean the fan will continue to run at higher temperatures, note that this limit is
ignored in radon mode.
Accessing Data Logger Menu
To access the menu of data that the unit stores press and hold the mode button for 5 seconds. The menu structure is
shown below, press mode to move to the next item:
To exit the menu press
MODE
for 5 seconds or wait for the screen to switch off.
Fig.14
Trickle*
Energy
Recovery*
No. Bedrooms
L/s
L/s
1
13
25
2
17
31
3
21
38
4
25
44
5
29
50
Display: tot run – 0y – 00d
Description: total unit run
time in years and days
Display: hEAt EnErGy - 00
Description: Total energy
consumption of the heater in
kWh
Display: Fan EnErGy - 00
Description: Total energy
consumption of the fan in
Wh
Display: nor run – 0y – 00d
Description: Total time
spent at Energy Recovery
speed
Display: trI run – 0y – 00d
Description: Total time
spent at trickle speed
5 second press
of Mode
