Lennox A111C, Руководство пользователя

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TERMINAL-THERMOSTAT INSTALLATION
When making the connection to the power board, special
attention must be paid to the polarity; the T+ terminal must
be connected to the T+ terminal on the power board; similarly
for the T- terminal (If the cables are connected in the opposite
order the instrument will not be damaged).
Terminal installation
The installation procedure is as following:
1º To detach the front panel of the terminal from the rear shell, insert a flat-head screwdriver in the slot in the centre
of the bottom of the box and release the locking flap.
2º Raise the front panel using a “hinge” movement, using the upper edge of the instrument as the pivot and raising
the lower edge.
3º To fasten the rear part of the box to the wall, place the hole in the centre of the box over the cables for the control
of the instrument which come out of the wall. The placement of the mounting holes has been designed to allow
the instrument to be fixed onto a box conforming to standards CEI.431 - IEC 670. (100x600). If this is not available,
use the mounting holes on the shell as a guide for drilling holes into the wall and then use the screw and plug
kit supplied.
4ºConnect the cables to the terminals on the rear shell of the box,
as indicated in, and in electrical diagram.
Sub-base
Sub-base
Maximum length allowed is 150m
T+
T-
To PCB in electrical panel
of air conditioning unit
For correct installation the following warnings must be heeded:
• Always disconnect the power supply before performing any operations on the board during assembly, maintenance
or replacement.
• The terminal should be fastened to the wall vertically, allowing for air to circulate through the instrument's vent-
holes, in order to detect the correct ambient temperature.
• Avoid places where the measurement of the ambient temperature by the internal sensor may be altered, such
as outside walls, near doors leading outside, in direct sunlight, etc.
The cables for connection to the power board must be kept separate from other cables,
using an individual cable channel; and use shielded cables, with a cross-section of 1mm.
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5º Finally, close the instrument, moving the front panel onto the rear shell with a “hinge” movement, in the opposite
way as used for opening. First the long side of the front panel near the display is snapped onto the rear shell,
then the opposite side, being careful that the terminal pins slide into their corresponding female terminals.
Terminal-Thermostat
Installed in the room
Electrical panel in the unit
Power board
AIR CONDITIONING UNIT
Two-lead shielded cable
with a cross-section of 1mm.
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