CLIMATIC™ 50 User manual - Lennox
CLIMATIC™ 50 User manual - Lennox
CLIMATIC™ 50 User manual - Lennox
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SUPPLEMENT OF HEATING (Option)<br />
Fonction<br />
Units may be equipped with 3 types of supplementary heating:<br />
Gas (BG, FG et BD, FD)<br />
Hot water coils (BC, FC et BH, FH)<br />
Electric heaters (BC, FC et BH, FH)<br />
From a room temperature need (Capacity Factor) the supplement of heating stages are started and stopped with a predetermined<br />
order.<br />
Description<br />
Operation priority, Compressors / Additional heating<br />
From factory setting, in heat pump mode, Climatic starts compressors first and then if necessary, starts additional<br />
heating.<br />
This sequence may be reversed with set points for the ambient temperature regulation and for fresh air pre-heating.<br />
3324 � Priority inversion from compressors to supplementary heating, air temperature regulation, adjustment by zone.<br />
3332 � Priority inversion from compressors to supplementary heating, fresh air regulation, adjustment by zone.<br />
Operation authorization<br />
The user may choose to limit the operation of the compressors by using contacts or set points modification.<br />
Set points<br />
Stop of additional heating if the set point (3357) is set tp ‘No’.<br />
Note: The address (3357) can be set differently for zones A, B, C, Ino ou GTC<br />
Contact<br />
Stop of the gaz module if the free contacts [Dis. Cp/Ah] or [Dis. AuxH.] are closed. (See Customized Input / Output<br />
(BE.<strong>50</strong>)).<br />
3357 � Supplementary heating authorization adjustment by zone.<br />
ELECTRICAL HEATERS<br />
Electrical heaters are stopped if the outside temperature is above a threshold in set point (3721).<br />
The capacity of electrical heaters piloted by a Triac may be limited. The set point (3723) fixes the maximum threshold.<br />
For electrical heaters piloted by a Triac and positioned before the coil, if the mixing air temperature is below the threshold<br />
in set point (3722), the electrical heaters are activated to 100%.<br />
For electrical heaters piloted by a Triac and positioned after the coil, if the blowing air temperature is below the threshold<br />
in set point (3722), the electrical heaters are activated to 100%.<br />
Pour les résistances électrique pilotées par Triac et positionnées après la batterie de détente directe ; si la température<br />
de soufflage est inférieure au seuil de la consigne 3722 les résistances sont activées à 100%<br />
3721 � Outside air temperature threshold for electrical heaters authorization.<br />
3722 � Minimum temperature threshold, Triac.<br />
3723 � Maximum capacity threshold, Triac.<br />
HOT WATER<br />
Protection against freezing with minimum water flow.<br />
If the outside air temperature is below the set point (3331), the valve will open to a minimum fixed in the threshold (3332).<br />
Freezing fault<br />
In general, in case of detection of hot water coil icing, the valve will open to 100%. Due to certain hydraulic network,<br />
pumps or tracing, the coil protection is done by closing the valve. This can be activated with the set point 3733.<br />
3731 � Outside air temperature threshold for authorization, minimum water flow.<br />
3732 � Valve opening threshold , minimum water flow.<br />
3733 � Valve action in case of freezing fault.<br />
CLIMATIC<strong>50</strong> – IOM – Rooftops/ Aircoolair CL<strong>50</strong>-ROOFTOPS-IOM-1107-E 23