Installation; Water Connections - Carrier 42N Installations- Und Bedienanweisungen

Installation

Receipt of unit
• Check that packaging is undamaged.
• Unpack unit and check immediately for damage during
transportation.
• Packaging contains the base unit and, if supplied, the unit
cabinet.
• Verify that all components ordered are supplied.
Unit preparation
• Take out and position template printed on the packaging.
It is advisable to keep cabinet packed until installation is comple-
te.
• To install the cabinet, position it onto the base unit and fix it to the
special tabs on the unit rear side and then secure it with the two
screws supplied (See fig.14-15)
• If the unit is installed at 150 mm from the floor or lower, use the
angles supplied with the base unit to prevent the user from
touching the moving parts (See fig.14-15)
• If, instead, the unit is installed higher than 150 mm from the floor,
use the rear closing grille kit (code 42N0954-42N0955-42N0956-
42N0957) according to the unit size. For horizontal installation at
more than 2.5 meters from the floor, the angles supplied need not
be used.
For horizontal installation at more than 2.5 meters from the floor,
the angles supplied need not be used.
Installation
• Before proceeding to unit installation, it is recommended to
assemble the accessories according to the instructions supplied
with the kit.
• It is advisable to lock the cover on the opposite side to the control
or on both sides if the control is not positioned on the unit.
• Knock out the prepunched part of the cover to insert the screw.
• Furthermore it is possible to lock the control cover.
• If a fresh air damper (accessory) is used, an opening must be
provided in the wall as shown in figure 16.
Floor-mounted vertical unit (See fig.18)
The unit is provided with supporting feet and cover panels (models
with cabinet).
• For positioning and drilling use the template printed on the
packaging.
• Drill four holes for the screw anchors close to the upper and lower
hooks.
• Install the supporting feet by inserting the special tab into the
corresponding slot on the unit plate (See fig.17)

Water connections

Water piping can enter either from the floor or from the wall. Leave
the space shown in the figure 22-23.
The unit coil can be supplied with water connections positioned as
requested.
However field conversion of the connections is achieved quite
simply as follows:
• Remove the control box panel;
• Unscrew the 6 self-threading screws and remove the front drain
pan;
• Unscrew the two screws holding the heat exchanger to the
structure, necessary for earthing the coil;
• Remove the coil by unhooking it with the rubber tabs and turn it
horizontally through 180°.
• Place the coil into its new position by hooking it using the special
18 42N
Centre the two indentations and secure each supporting feet
using the corresponding clips supplied with the kit.
• If a baseboard is mounted onto the wall, remove the pre-cut tab
from the cover panel. Install the cover panels by hooking them to
the slots on the cabinet lower part and secure them with the
screws supplied.
• Position unit to wall and secure it with screws. To facilitate cabinet
installation, it is suggested to use flathead screws.
• To complete the installation make electrical and water
connections as per the diagram inside the control box panel.
When all connections have been made, install the cabinet as
previously described.
WARNING: With wall-to-wall carpet the hole points must be moved
up by 10 mm (as indicated on the template).
Wall-mounted vertical unit (See fig.19)
• This unit is not provided with supporting feet and cover panels.
• Install the unit as indicated above and keep it at least 100 mm
from the floor.
Ceiling-mounted horizontal unit
• Use the template printed on the packaging for ceiling mounting of
the unit.
• Drill four holes for the screw anchors close to the four side hooks.
• Attach the two brackets supplied for horizontal installation to the
unit, securing them with the screws as shown in figure 20.
• Hook the unit on the screw anchors in the ceiling and adjust the 4
screws.
• Make certain the fan coil is horizontally levelled.
• Make electrical and water connections and install the cabinet.
Condensate drain
Coil surface condensation formed during the cooling cycle is
collected in a pan purposely placed under the coil and then drained
out through a drain pipe fitted on the coil connection side.
A simple flexible tube which fits Ø 20 mm is recommended.
To facilitate correct condensate draining, make sure that the drain
pipe is not bent or restricted and that it has the required slope (at
least 2%) along its length. A drain trap is recommended (See fig.21)
Checking
Before unit operation verify that the water flows into the internal
condensate drain pan by pouring some water into it.
If problems are detected, check the drain pipe slope and look for
possible obstructions.
rubber tabs;
• Refit the front drain pan with the 6 self-threading screws;
• Retighten the two screws holding the heat exchanger to the
structure, necessary for earthing the coil;
• Position the control box panel opposite the coil connections.
• Pass the sensor through the special hole and seal with sealing
material in the tangential fan versions;
• Position the control into the tabs provided,, blocking it with the
supplied metal plate (see paragraph "Controls").
• Change the position of the condensate drain closing plug of the
drain pan and put it on the same side of water connections.
NOTE: The connection pipes must be insulated with a
condensation-proof material such as polyurethane, propylene or
neoprene of 5 to 10 mm thickness.