Carrier 42CT Series User manual

42CT Fan Coil Units
Installation Operation
Maintenance Manual

Code No: B.5.1.5i Publishing Date:
Revision Date:71021

General Information ............................................................................ 4
Unit Dimensions and Water Coil Connections ................................. 5
Installation, Commisisoning, Operation, Maintenance Safety
Operating Limits....................................................................................10
Handling & Installation & Commissioning ........................................ 11
Electrical Data ..................................................................................... 15
Commissioning ................................................................................... 18
Table of Contents
Considerations..................................................................................... 8

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1. GENERAL INFORMATION
The fan coil units covered in this manual are suitable for indoor installation and
ductable for horizontal concealed ceiling application.
1.1. Casing
Along with the air plenum box with filter options. Rear return air plenum and
bottom return air plenum options fabricated with a galvanised steel.
1.2. Coil
Blue hydrophilic aluminium fan coil, with copper tube and aluminium fan.
The coil shall have 3 rows/4 rows configurations for 2 pipe application and 3+1
row configuration for 4 pipe application.
1.3. Filters
Washable nylon mesh panel filter&aluminium frame provided as standard.
Easily removable from bottom/rear and easily demounted.
1.4. Drain Pan
Fabricated with galvanized with powder coating or stainless steel, and flat
design sloped. Drain pan shall be insulated with elastomeric rubber foam.
Stainless steel and extended lenght drain pans (200 mm longer than standart
pans) are optional.
1.5. Fans
Fans are designed wide and large diameter impeller, low speed forward blade.
1.6. Motors
AC motor with permanent split capacitor with three phase.

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2. UNIT DIMENSIONS AND WATER COIL CONNECTIONS
• The piping connections drain pan outlet and control box can be located
on the right hand side or left hand side facing the airflow in the field when
needed.
• Unit should be installed for horizontal discharge only.
• All Dimensions are in mm.
Notes:

6
Standard 2 pipe unit with rear plenum
Standard 4 pipe unit with rear plenum
* For the unit size 14, dimension is 54 mm
** For the unit size 14, dimension is 118,5 mm

7
Standard 2 pipe unit with bottom plenum
Standard 4 pipe unit with bottom plenum
* For the unit size 14, dimension is 54 mm
** For the unit size 14, dimension is 118,5 mm

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3. INSTALLATION, COMMISSIONING, OPERATION,
MAINTENANCE SAFETY CONSIDERATIONS
It is essential that installation, operation and maintenance must be carried
out by a qualified, trained and experienced technicians. For safety reasons,
technicians are required to read this manuel carefully.
The unit is not to be used by persons (including children) with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction
Improper installation, adjustment, alteration, service, maintenance or use can
cause explosion, fire, electrical shock or other conditions which may cause
personal injury or property damage.
All power must be disconnected prior to installation and servicing this equipment.
Insure that all power sources have been disconnected to avoid electrocution or
shock injuries.
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.
Motor and fan must be disconnected to all power prior to opening access panels
and servicing.
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. Wear safety glasses
and work gloves.
The manufacturer declines any liability for damage resulting from modifications
or errors in the electrical or other connections. Failure to observe the installation
instructions, or use of the unit under conditions other than those indicated in the
unit installation manual, will immediately invalidate the unit warranty.
• This appliance can be used by children aged from 8 years and above and
persons with reduced physical, sensory or mental capabilities or lack of
experience and knowledge if they have been given supervision or instruction
concerning use of the appliance in a safe way and understand the hazards
involved,
• Children being supervised not to play with the appliance,
• Cleaning and user maintenance shall not be made by children without
supervision.

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• Hot or damaged power supply cable;
• Unusual noise during operation;
• Unusual smell (such as smell of burning).
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
Alarko Carrier Service for further instructions. Do not place containers filled with
liquids or other objects onto the unit.
Motor and fan must be disconnected to all power prior to opening access panels
and servicing 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.
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:
Warranty is based on the general terms and conditions of the manufacturer.
Any modifications to the design and/or installation made without discussion with
Alarko Carrier and without advance written agreement will result in the loss of
the right to any warranty claims and any claim for injury to personnel as a result
of these modifications.
3.1 Warranty

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4. OPERATING LIMITS