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We strongly recommend installing supplementary natural
ventilation, a failure alarm system as well as a back-up
thermostat on at least one cooling stage (refer to the wiring
diagram enclosed with this user's manual to connect the
thermostat).
Fuses at the input and outputs of the controller adequately
protect its circuitry in the case of an overload or overvoltage.
However, we recommend installing an additional protec-
tion device on the supply circuit as well as an external relay
on all ON-OFF stages to prolong the life of the controller.
To avoid exposing the controller to harmful gases or exces-
sive humidity, it is preferable to install it in a corridor.
The room temperature where the controller is located
MUST ALWAYS REMAIN BETWEEN 32° AND 104°F (0° AND
40°C).
DO NOT SPRAY WATER ON THE CONTROLLER
6
TC4-2N6F.rev.07
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