UC/UCX SERIES FAN COIL UNIT
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
**WARNING TO INSTALLER, SERVICE PERSONNEL AND OWNER**
Altering the product or replacing parts with non authorized factory parts voids all warranty or implied warranty and may result in adverse operational performance and/or a possible hazardous safety condition to service personnel and occupants. Company employees and/or contractors are not authorized to waive this warning. Current Maintenance Program is available at www.firstco.com under "Product Information".
GENERAL
The manufacturer assumes no responsibility for equipment installed in violation of any code requirement.
These instructions give information relative to the installation of UC fan coil units only. For other related equipment refer to the proper instructions.
Material in this shipment has been inspected at the factory and released to the transportation agency in good condition. When received, a visual inspection of all cartons should be made immediately. Any evidence of rough handling or apparent damage should be noted on the delivery receipt and the material inspected in the presence of the carrier's representative. If damage is found, a claim should be filed against the carrier immediately.
FAN COIL UNIT
The installer must adhere strictly to all local and national code requirements pertaining to the installation of this equipment.
These units are designed to be installed vertically in the upflow position by the following mounting means:
Hung on closet wall
Using mounting kit 90PK3, air handler may be wall mounted. Brackets and screws are provided for the air handler.
It is recommended that sound isolating material be installed to prevent any undesired transfer of sound.
Recessed in a wall
Installation of the fan coil recessed into a partition wall with it's recommended framing is shown in figure 1. This application requires the optional louvered wall panel which must be ordered from First Co. Wall panel with frame is secured to the studs by screws or nails after the dry
wall has been installed. Refer to figure 2 and 3.
Closet Platform Front Return
Fan coil is to be set on a platform and secured by screws or nails. Sufficient space for drain piping is required under the platform.
****** WARNING ******
Extreme caution must be taken that no internal damage will result if screws or holes are drilled into the cabinet.
All fan coil units are U.L. Listed for installation with zero inches clearance to combustible materials. This includes the fan coil cabinet, discharge plenum and connecting ducts. Sufficient clearance must be provided at the front of the fan coil to allow access to electrical controls and removal of the motor /blower assembly for servicing. This clearance distance should be approximately the same as the depth dimension of the fan coil unit.
****** WARNING ******
Unit must not be operated during building construction due to excessive airborne dust and debris. The unit must not be operated under any circumstances without an air filter in place.
AIR DISTRIBUTION DUCTS
All duct work must be installed in accordance with National Fire Protection Association Codes 90A and 90B. Ducts should be adequately insulated to prevent condensation during the cooling cycle and to minimize heat loss during the heating cycle. All return air must be filtered to prevent dirt buildup on the coil surface. If there is no ducted return, applicable installation codes may limit the unit to installation only in a single story residence. In many cases it is acceptable to use ducting of the same size as the fan coil connections. However, unique arrangements or long duct runs must be confirmed by a local professional. The manufacturer will not be responsible for misapplied equipment.
L2441 3/11
ELECTRICAL
All wiring must comply with local and national code requirements. Units are provided with wiring diagrams and nameplate data to provide information required for necessary field wiring. Refer to figure 2 for points of entry of the wiring into the cabinet.
These units may be provided with a Class 2 transformer for 24-volt control circuits. Should any add-on equipment also have a Class 2 transformer furnished, care must be taken to prevent interconnecting outputs of the two transformers by using a thermostat with isolating contacts.
****** WARNING ******
On 1.5 and 2 ton units do not use the blower low(red wire) speed tap with electric resistance heating. This could cause overheating and a possible fire situation. High and medium speeds keep hot spots from forming. Follow supplied wiring diagram strictly. Failure to do so will void all warranties.
Does not apply to brushless DC motors if so equipped. Follow wiring diagram supplied.
INSTALLATION
PRECAUTIONS
Installation of this fan coil should only be performed by licensed personnel to ensure proper installation and the safety of the installer. The following are some precautions to be followed for typical installations.
•Always use proper tools and equipment.
•No wiring or other work should be attempted without first ensuring that the fan coil is completely disconnected from the power source and locked out. Always verify that a good ground connection exists prior to energizing any power sources.
****** WARNING ******
Do not touch any rotating component with any object. Damage to the equipment and personal injury can occur.
•Always review the nameplate on each unit for proper voltage and control configurations. This information is determined from the components and wiring of the unit and may vary from unit to unit.
•When soldering or brazing to the unit, it is recommended to have a fire extinguisher readily available. When soldering close to expansion devices or other components, heat shields or wet rags are required to prevent damage.
•When the fan coil unit is in operation components are rotating at high speeds.
•Units must be installed level to ensure proper drainage and operation.
NOISE
These fan coil units are designed for quiet operation, however, all air conditioning equipment will transfer some amount of noise to the conditioned space. This should be taken into consideration when planning the location of the equipment.
COOLING COIL PIPING
These fan coil units are supplied with a direct expansion refrigerant coil. The suction and liquid lines must be sized in accordance with the outdoor unit manufacturer's recommendations.
•Check unit prior to operation to ensure that the condensate water will drain toward the drain connection. An overflow drain or an auxiliary drain pan under the fan coil may be required as a back up to a clogged primary drain.
•On units with plastic drain pans DO NOT tighten more than hand tight.
•Be sure that the drain pan is free from foreign material prior to start up.
•Check filter media installation to ensure that it is installed correctly. Use the directional arrows or other information on the filter to determine the proper flow direction.
****** WARNING ******
When connecting piping to fan coil units, do not bend or reposition the coil header tubing for alignment purposes. This could cause a tubing fracture resulting in a refrigerant leak when pressure is applied to the system.
UC RECESSED WALL MOUNTING
CROSS MEMBER - TOP & BOTTOM
ATTACH UNIT TO FRAME USING 6 SCREWS / NAILS IN CABINET AT LOCATIONS SHOWN
VERTICAL |
2 X 4 |
BRACKET PLACEMENT |
FOR HANGING |
IN A CLOSET |
UNIT FLUSH WITH |
WALL STUDS |
(NOT CRITICAL) |
LEAVE SUFFICIENT |
SPACE FOR DRAIN |
PIPING |
10" TO 12" MINIMUM |
RECOMMENDED |
SUPPORT FRAMING
Figure 1
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