Extra Heating (Option) - Lennox CLIMATIC series User Manual

COMPONENTS

EXTRA HEATING (OPTION)

Function
The CLIMATIC can manage up to 3 types of supplement of heating according to the type of unit.
• gas,
• electrical heaters,
• hot water coils.
Description
The CLIMATIC can control simultaneously 2 types of supplement of heating:
• heater 1: gas, electrical heaters, or hot water coils,
• heater 2: electrical heaters, or hot water recovery,
The heater (1 or 2) activation in the menus (3721) and (3724) can be adjusted according to the scheduling and can take different
values for each schedule mode (Night, Day, Day I, Day II and BMS).
9h
The supplement of heating is managed as an additional stage according to the outside temperature .
The priority between the compressor(s) and the heater(s) can be predefi ned in the menus (2771) and (2774).
The various posssiblities to sequence the heater 1 are:
• (2771) = "Never": the compressor(s) are started fi rst, then the heater 1, (by default)
• (2771) = "Always": the heater 1 is started fi rst, then the compressor,
• (2771) = "Out low": the heater 1 is started fi rst if the outside temperature is ≤ (2772), then the compressor,
• (2771) = "Out high": the heater 1 is started fi rst if the outside temperature is ≥ (2772), then the compressor.
The various posssiblities to sequence the heater 2 are:
• (2774) = "Last": the compressor(s) are started fi rst, then the heater 2, (by default)
• (2774) = "First": the heater 2 is started fi rst, then the compressor.
CLIMATIC RT_UNITARY-IOM-1508-E
12h/0h
Day mode
YES
Night mode
3h
NO
DayI mode
YES
6h
Heater enable
(2773)
24h/12h
Night mode
NO
21h
Night mode
NO
18h
Air outside temperature (°C)
Day mode
YES
15h
DayI mode
YES
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