Lennox BCK 020 Installation Operating & Maintenance Manual page 69

Main Screen Code Description Code Description Code Description
4-Ventilation
Code UNIT
5-Enable 3350 1-Fan On/Off 3351
2-Fan Dead 3352
3-F.Air 3353
4-CO2 3354
5-Comp.Cool. 3355
6-Comp.Heat. 3356
7-AuxHeat 3357
8-Humidif. 3358
9-Low Noise 3359
6-Capacity 3360 1-Room 3361 ~
2-Reheat 3362 ~
7-Safety 3370 1-Room Low 3371 °C
2-Room High 3372 °C
3-Sup.Lo.1 3373 °C
4-Sup.Lo.2 3374 °C
5-Sup.Lo.3 3375 °C
6-Sup.Hi.1 3376 °C
7-Sup.Hi.2 3377 °C
8-Room Low 3378 %
9-Room High 3379 %
3410 1-Air Flow 3411 Pa 0
Min Factory Max description
(1)
*[Enable] Stopping and running of the Fan Blower.[OFF] the
On/Off ~ On ~
blower is stopped, [ON] the blower is running.
(1) *[Enable] Stopping and running of the fan in the "Control
On/Off ~ On ~
Dead Zone". [OFF] the blower is stopped, [ON] the blower is
running.
*[Enable] Run eco: [ON] the Economiser is running, [OFF]
(1)
On/Off ~ On ~
the Economiser if stopped.
*[Enable] Run CO2 Sensor: [ON] Switch-on the CO2 on a
(1)
On/Off ~ On ~
Zone, [OFF]Stop the CO2 sensor on a zone.
(1) *[Enable] [OFF] Force the unloading of compressors in
On/Off ~ On ~
cooling mode.
*[Enable] [OFF] Force the unloading of compressors in
(1)
On/Off ~ On ~
heating mode.
(1)
*[Enable] [OFF] Force the unloading of heating module
On/Off ~ On ~
(electric, gas or heat water coil)
(1)
*[Enable] [OFF] Force the unloading of humidity control.
On/Off ~ On ~
(1)
On/Off ~ Off ~
*[Enable] Force the noise reduction mode. [ON] 50% of the
compressors are unloaded in "Unocupied" zone
1 4 100 *[Capacity Factor] Reactivity : Refer to "Climatic features" in
*IOM for details
1 4 100 *[Capacity Factor] Reactivity: Refer to "Climatic features" in
*IOM for details
5 5 20
*[Safety Limit] Room temperature "Low Limit" in °C Threshold
of activation of an alarm
20 40 40 *[Safety Limit] Room temperature "High Limit" in °C
Threshold of activation of an alarm
9 or 5 10 or 8 19 *[Safety Limit] Supply temperature low Limit (in °c) -
Threshold of activation of the 1° level of security: Reduce the
"Capacity Factor" by one stage of compressor and switch to
minimum Fresh Air,
7 or 3 8 or 6 17 *[Safety Limit] Supply temperature low Limit (in °c) -
Threshold of activation of the 2° level of security: Reduce the
"Capacity Factor" to zero and switch to 0% Fresh Air,open the
HWC valve.
5 or 1 6 or 2 15
*[Safety Limit] Supply temperature low Limit (in °c) -
Threshold of activation of the 3° level of security. - Alarm
threshold, the unit is switched off.
20 40 70
*[Safety Limit] Supply temperature high Limit (in °c) -
Threshold of activation of the 1° level of security: reduce the
capacity factor by one stage of compressor. Close the HWC
valve.
20 60 70
*[Safety Limit] Supply temperature high Limit (in °c) -
Threshold of activation of the 2° level of security: Alarm
threshold: Reduce the capacity factor to 0
0 0 100
*[Safety Limit] Room relative humidity low Limit (in %) -
Threshold of activation of the alarm
0 100 100
*[Safety Limit] Room humidity high Limit (in %) - Threshold of
activation of the alarm
25 1000 *[Safety Limit] Airflow Detection Threshold of pressure
difference in Pa indicating Low Airflow Rate. If the pressure
difference across the filter is lower than this threshold the
safety is activated.