General Information; Unit Installation; Unit Operation; Choosing The Installation Site - Carrier 42N16 Manuel D'installation Et D'emploi

General information

Unit installation

Read this instruction manual thoroughly before using the unit
and keep it for further consultation even after installation.
• This unit complies with low voltage (EEC/73/23) and
electromagnetic compatibility (EEC/89/336) directives.
• The installation must be carried out by a qualified installer.
• For safety reasons, installers are required to read the general
information carefully.
• Follow all the instructions below to ensure safety.
• Inspect the unit for damage due to improper transport.
Do not install or use damaged equipment.
• To prevent fire, explosion or injury, do not operate the unit near
dangerous substances or close to naked light equipment.
• Ensure that national safety code requirements have been
followed for the main supply circuit. Follow all current national
safety code requirements. Ensure that a properly sized and
connected ground wire is in place.
• Check that voltage and frequency of the mains power supply are
those required for the unit to be installed; the available power
must be adequate to operate any other appliances connected to
the same line.
• Make sure that properly sized disconnecting and safety switches
are installed.
• The manufacturer declines any liability fror damage resulting
from modifications or errors in the electrical or hydraulic
connections. Failure to observe the installation instructions, or
use of the unit under conditions other than those indicated in the
table "Operating limits" of the unit installation manual, will
immediately invalidate the unit warranty.
• After installation thoroughly test system operation and explain all
system functions to the owner.
• All of the manufacturing and packaging materials used for
your new appliance are compatible with the environment
and can be recycled.
• Dispose of the packaging material in accordance with local
requiremements.
• When installing the electric heater kit and after connecting
the electric cables, cover the connectors using the silicon
rubber caps. Check that the coil is fixed to the structure to
ensure its correct ground connection.
• The use of hot water and electric heater together is not
allowed. If the unit equipped with electric heaters is
connected to a hot water source, the use of a water on-off
valve is necessary at the coil input in order to avoid that
the heating element works when water is circulating.
With units equipped with electric heater, the type "B"
control (code 42N9003) specially designed by Carrier is to
be used.
Warnings: avoid...
... any obstruction of the unit air outlet or return. Leave 1 metre
minimum of free space (See fig.1)
... exposure to oil vapours (See fig.2)
... installation in areas with high frequency waves (See fig.3)
... any rise in the condensate drain piping.
... horizontal condensate drain piping with less than 2% slope
(See fig.4)
... slack on electrical connections (See fig.5)
... disconnecting water connections after installation (See fig.6)
... exposure to direct sunshine, when unit is operating in cooling

Unit operation

• In order to avoid electric shock, fire or injury, stop the unit and
disconnect the safety switch in case of abnormal events (such
as smell of burning) and call Carrier Service for further
instructions.
• Do not place containers filled with liquids or other objects onto
the unit.
Maintenance
WARNING:Disconnect the mains power supply prior to any
maintenance operations or prior to handling any internal
parts of the unit.
• A routine maintenance should be carried out on the unit to check
the correct operation of the electric connections and protection
devices.
• Maintenance operations must be carried out by specially trained
personnel.
• Do not attempt to repair, move, modify or re-install the unit on
your own. To avoid electric shock or fire make sure these
operations are carried out by qualified personnel only.
• Contact the qualified service if one of the following events takes
place:
- hot or damaged power supply cable;
- unusual noise during operation;
- frequent operation of the protection devices;
- unusual smell (such as smell of burning).

Choosing the installation site

• Choose an area free from obstructions which may cause
irregular air distribution and/or return.
• Check that the wall surface is flat enough to allow easy and safe
installation of the unit. The wall structure should be strong
enough to carry the unit weight and avoid deformation, rupture
or vibration during operation.
• Consider using an area where installation is easy.
• Choose a position that allows for the clearances required (see
drawing).
• Look for a position in the room which assures the best possible
air distribution.
• Install unit in a position where
condensate can easily be piped to an appropriate drain.
Positions to avoid:
• Exposed to direct sun.
• Too close to heat sources.
• On humid walls or positions with water hazard, e.g. laundry
premises.
• Exposure to oil vapours (e.g. kitchens, workshops).
• Where curtains or furniture may obstruct free air circulation.
mode; always use shutters or shades (See fig.7)
... positions too close to heating sources which may damage the
unit (See fig.8)
... connecting condensate piping to sewage system drain without
appropriate trap. Trap height must be calculated according to the
unit discharge head in order to allow sufficient and continuous
water evacuation (See fig.9)
... only partial insulation of the piping (See fig.10)
... installation not correctly levelled which will cause condensate
dripping (See fig.11)
... flattening or kinking pipes or condensate pipes (See fig.12)
42N 17