Safety Devices - Lennox Climatic 40 User Manual

SAFETY DEVICES

ANTIFREEZE PROTECTION (ECOLEAN).
This protection is activated by the control of the unit when the outlet water temperature probe (b2), located inside the water
exchanger, measures +4.5ºC and deactivates when the outlet water temperature probe reaches +5.5ºC again.
When the protection is activated, the following occurs:
- If the unit is operating in STAND-BY mode: the water pump goes on, as does the electrical heater for the water exchanger
and the electrical heater of the water tank (if included).
DO NOT TURN OFF THE POWER TO THE UNIT. WHEN THE POWER IS OFF THE ANTI FREEZE PROTECTION
- If the unit is operating on cooling mode: it powers the electrical heater of the water tank, the electrical heater of the water
exchanger, and it activates the hot gas injection valve (if the unit incorporates these options).
LOW WATER TEMPERATURE ALARM (ECOLEAN).
This alarm is activated when the outlet water temperature probe (b2) measures a value of + 3 ºC (in standard unit).
The unit is stopped. The alarm can be reset manually when the outlet water temperature reaches + 8ºC (in standard unit).
NOTE: Low water temperature options can change the values of antifreeze protection and low water temperature alarm.
ANTIFREEZE PROTECTION (AIRCOOLAIR).
The unit is protected by means of a temperature probe located in the indoor piping, when the indoor temperature goes drops 2ºC:
WITHOUT FREECOOLING
- The compressors shut down and the antifreeze alarm goes on.
- The alarm is reset automatically when the temperature reaches 7ºC.
WITH FREECOOLING
- Air intake gate closes,
- Once the gate is completely closed, the compressors shut down and the antifreeze alarm goes on.
When the air intake gate is closing, if the temperature in the indoor piping goes up 2ºC, the gate stops and stays in the position
reached; then, if the temperature reaches goes over 7ºC, the air damper starts to open or, if the temperature goes down 2ºC, the
damper start to close again.
In addition to that, in order to prevent frozen air discharging when freecooling without the compressors working (outdoor temp.
<10ºC), if the temperature in the indoor piping goes down 7ºC, the air intake gate starts to mix outdoor air with return air, thus
increasing the temperature of the discharge air.
WILL NOT OPERATE.
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