Important; General Installation Conditions; Conformity; Installation Of The 42Ce Unit - Carrier 42CE Manual De Instalación

IMPORTANT: The components, which make up the
different control loops described in this manual include
electronic items. As such, they may generate or be harmed
by electromagnetic interference unless they are installed
and used in accordance with these instructions. The
components making up these control systems conform to
the requirements of electromagnetic compatibility in
residential and industrial areas. They also comply with
the low-voltage directive.

2.3 - General installation conditions

IMPORTANT: The Carrier numeric controller, power
module, or in general units fitted with controls loops must
have an isolating device upstream (for example a double-
pole circuit breaker). If necessary, an easily operated
emergency stop device (such as a punch-button switch) must
cut off the power to all equipment. These safety devices
shall be sized and installed in accordance with IEC
Recommendation 364, corresponding to Europe HD 384,
France NFC 15 100 and UK IEE Wiring Regulations.
These devices are not supplied by Carrier.
In general terms the following rules must be applied:
Upstream over-voltage protection
Unit without electric heater
Standard unit sizes CE 00/00/00 with electric heater
Standard unit sizes CE 00/00 with electric heater
• Units must be provided with over-voltage protection
upstream (not supplied by Carrier).
• Units must be protected by a differential type earth
leakage current device (not supplied by Carrier).
• The power disconnection device must be clearly labelled
to identify which items of equipment are connected to it.
• The wiring of the components which make up the
different control systems and the communication buses
must be carried out in accordance with the latest rules
and regulations by professional installers.
• The power supply cable must be doubly insulated and
fixed using a cable clamp. A hole is provided for this
purpose in the plastic Carrier controller housing. The
cable must be clamped on the outer insulation.
• The control loop components must be installed in an
environment, which conforms to their index of protec-
tion (IP).
• The maximum level of pollution is normally pollutant
(level 2) and installation category II.
• The low-voltage wiring (communication bus) must be
kept physically separate from the power wiring.
• In order to avoid interference with the communication
links:
- Keep low-voltage wiring away from power cables
and avoid using the same cable run (a maximum of
300 mm in common with the 230 V a.c., 30 A cable).
- Do not pass low-voltage wires through loops in
the power cables.
- Do not connect heavy inductive loads to the same
electrical supply (circuit breaker) used by the
controllers, power modules or speed controllers.
- Use the screened cable type recommended by
Carrier and make sure all cables are connected to
the controllers and power modules.

2.4 - Conformity

This equipment has been declared to be in conformity with
the main requirements of the directive by virtue of using
the following standards:
• Electromagnetic compatibility: 89/336/EEC,
• Low-voltage directive: 73/23/EEC

3 - INSTALLATION OF THE 42CE UNIT

3.1 - Installing the unit in the false ceiling

The positioning of the unit must not create an obstacle that
may lead to an unequal distribution and/or return flow of
the air. The ceiling must be sufficiently even to allow a
simple installation without danger from the unit. The
supporting structure must be able to carry the unit weight
and prevent deformation, breaks or vibrations during
operation.

3.2 - Installation procedure

3.2.1 - Unit conversion
On units without options the fan assembly can be changed
to the other side, if required (Fig. 7).
TA
Proceed as follows:
T10A
• Unscrew the fan assembly.
T1A
• Unscrew the cover and turn it horizontally by 180°.
• Take the metal angle from the opposite side of the coil.
• Re-install the fan assembly from the opposite side of
the coil.
• Place the control box panel in front of the coil
connections.
3.2.2 - Filter access modification
If the unit includes an optional filter, filter access can be
changed. The filter is always supplied with access from the
rear of the unit. If access from below is required, please
proceed as indicated below (Fig. 8):
• Loosen the fixing screw from the filter support section
(A)
• As this is reversible, change its position to allow filter
installation from below.
• Re-insert the fixing screw.
3.2.3 - Wiring diagram
• Base unit for connection to a wall thermostat for
example (Fig. 9).
Legend:
V1 Low fan speed
V Medium fan speed
V High fan speed
• Unit with optional numeric Carrier controller: Please
refer to the specific documentation about numeric
Carrier controllers.
3.2.4. - Installation
Position the 42CE close to where it is to be installed in the
ceiling void. For installation in a false ceiling use a hydraulic
lift and a folding ladder to make the task easier (Fig. 10).
1HV Hot water valve
1CV Cold water valve