General Information - Carrier 42N_S Installation And Operation Manual

42N - FAN COIL UNITS
Fig.13.
Dimensions (mm) and weight, cabinet unit
X . Cabinet version
. Slots for wall vertical fixing
. Condensate discharge Ø 20 mm O.D. drain
connection
. Cover panels (accessories)
. Supporting feet (accessories)
. Slots for horizontal ceiling fixing
Dimensions (mm) and weight, concealed unit
Y . Concealed version
. Condensate discharge Ø 20 mm O.D. drain
connection
. Supporting feet (accessories)
. Cool Ø 3/4" gas female
. Heat Ø 1/2" gas female
* Only for unit E19.
Fig.16.
1 . Minimum distance from the wall
Fig.17.
Supporting feet and cover panels assembly for
floor-mounted vertical unit
Fig.18.
Example of installation of unit with cabinet
2 . Turn by 180°
Fig.18A.
Example of vertical installation of concealed unit
Fig.18B.
Distance between panel – concealed unit
A . Intake grille size
B . Supply grille size
C . Panel size
Fig.19.
3 . Screw anchor with double screw
4 . Air vent
Fig.21.
Space for water connections
Front view
. IN
. OUT
. Cool Ø 3/4" gas female
. Heat Ø 1/2" gas female
. Condensate drain
. Floor
Fig.22.
Space for water connections
Top view

General information

Unit installation
Read this instruction manual thoroughly before using the unit and
keep it for further consultation even after installation.
This unit is not intended for use by persons (including children) with
reduced physical, sensorial or mental capacities or by inexperienced
persons unless they have been instructed regarding use of the
appliance and are supervised by a person responsible for their safety.
Children must be supervised to ensure they do not play with the unit.
The unit complies with all applicable standards for EC marking (for
further details see Declaration of Conformity).
The installation must be carried out by a qualified installer.
For safety reasons, installers are required to read the general information
16 42N_S 42N_E
Fig.23-24-25.
5 . Control box panel
6 . Hooks for control fixing
7 . Temperature sensor
8 . No. 2 screws for coil earthing
9 . Front drain pan
10 . Rubber tabs for coil hook
11 . Thermoelectric valve head
12 . Cold water circuit
13 . Hot water circuit
Fig.27.
Control box panel for versions without electric
heater
. Fuse Holder
. Control connection cables
. Motor connection cables
. Power supply cables (230V ~)
. Cables
. Fan motor capacitor
. Cable holder
. Power supply unit terminal block
. Supplementary motor speed wires
. Utility terminal block
Fig.28.
Control box panel for version with Low Power
electric heater
. Electric heater cables
. Fuse Holder
. Control connection cables
. Motor connection cables
. Power supply cables (230V ~)
. Cables
. Fan motor capacitor
. Cable holder
. Power supply unit terminal block
. Supplementary motor speed wires
. Utility terminal block
Fig.28b.
Control box panel for version with High Power
electric heater
. Electric heater cables
. Fuse Holder
. Control connection cables
. Motor connection cables
. Power supply cables (230V ~)
. Cables
. Fan motor capacitor
. Cable holder
. Power supply unit terminal block
. Power supply electric heater terminal block
. Supplementary motor speed wires
. Relay for high power electric heater
. Utility terminal block
Fig.29.Fig.29b.
Motor fan wire connections
b blue (motor neutral)
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.
r red (ultra low speed)
w white (medium speed)
c black (super high speed)
y yellow (low speed – not connected)
o orange (high speed – not connected)
Fig.30.
Control type "A"
Fig.31.
Control type "B"
Fig.29-30-31.
14 . ON/OFF/fan speed selector
15 . Blue LED - cooling operation
16 . Seasonal changeover button
17 . Red LED - heating operation
18 . Yellow LED - automatic operation (only for type "B")
19 . Energy saving button
20. Yellow LED - energy saving operation
21 . Temperature knob
Fig.32.
22 . Control
23 . Screw to close the control
24. Control cable
25 . Control box panel
26. Metal plate to fix the control
27 . Screws
Fig.33.
28. Screw
29. Screw anchor
Fig.34.
30. Minimum temperature sensor (optional)
31 . Air sensor
32 . Jumper to select remote temperature sensor or
internal sensor
33 . Internal temperature sensor
34. Dip-switch selectors
Fig.35.
X . Control internal sensor
Y . Unit - mounted sensor
Fig.36.
35 . Protection grille
36. Safety thermostat
Fig.37.
Concealed units size of return/supply duct.
Fig.38.
Tangential unit with "Low Energy Consumption Fan Motor"
Fig.39.
Centrifugal unit single shaft with "Low Energy
Consumption Fan Motor"
Fig.40.
Centrifugal unit dual shaft with "Low Energy
Consumption Fan Motor"