Subscribe to Our Youtube Channel
Related Manuals for First Co HX Series
Summary of Contents for First Co HX Series
- Page 1 Installation, Operation, & Maintenance IOM 4106 Rev. B 1/25 HX/HXX/HXS Series Horizontal Fan Coil Units ATTENTION Read all instructions thoroughly and retain all manuals for future reference.
- Page 2 HX/HXX/HXS IOM COPYRIGHT The Manufacturer works to continually improve its products and as a result, it reserves the right to change design and specifications without notice. WARNING Only personnel trained and qualified in the installation, adjustment, servicing, maintenance, or repair of the equipment described in this manual should perform service.
-
Page 3: Table Of Contents
HX/HXX/HXS IOM TABLE OF CONTENTS SAFETY CONSIDERATIONS NOMENCLATURE SAFETY INFORMATION INSTALLATION PRECAUTIONS LOCATION AND CLEARANCE GENERAL INFORMATION FAN COIL UNIT AIR DISTRIBUTION DUCTS STATIC PRESSURE ELECTRICAL WIRING DIAGRAMS 11-14 MINIMUM ROOM SIZE AND MITIGATION AIRFLOW A2L SENSOR MOUNTING MOUNTING 16-17 PHYSICAL DIMENSIONS ENCLOSURE DIMENSIONS COOLING COIL PIPING... -
Page 4: Safety Considerations
HX/HXX/HXS IOM SAFETY CONSIDERATIONS 1. READ THE ENTIRE MANUAL BEFORE STARTING THE INSTALLATION. 2. Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or other conditions which may cause personal injury damage. 3. Consult a qualified licensed installer, service agency, or your distributor for information assistance. The qualified licensed installer or service agency must use factory-authorized kits or accessories when servicing this product. -
Page 5: Nomenclature
HX/HXX/HXS IOM NOMENCLATURE IOM4106 (Rev. B 1/25) -
Page 6: Safety Information
HX/HXX/HXS IOM SAFETY INFORMATION WARNING WARNING Risk of fire. Flammable refrigerant used. To These instructions are intended to aid qualified, licensed, be repaired only by trained service service personnel in proper installation, adjustment and personnel. Do not puncture refrigerant operation of this unit. Read these instructions thoroughly tubing. -
Page 7: Installation Precautions
HX/HXX/HXS IOM INSTALLTION PRECAUTIONS LOCATION AND CLEARANCE Installation of this fan coil should only be performed by a Select a location that provides sufficient space for licensed contractor to ensure proper installation and the mounting and allows for ducting connections. Maintain a safety of the installer. -
Page 8: General Information
HX/HXX/HXS IOM GENERAL INFORMATION FAN COIL UNIT HX/HXX/HXS units are ceiling mounted fan-coils This unit may be installed at altitudes up to 10,000 ft. comprised of a blower assembly, direct expansion coil The installer must adhere strictly to all local and national and may include electric resistance heaters. -
Page 9: Air Distribution Ducts
HX/HXX/HXS IOM FAN COIL UNIT (Continued) AIR DISTRIBUTION DUCTS All duct work must be installed in accordance with WARNING National Fire Protection Association Codes 90A and 90B. Use two or more people when moving and installing these units. Ducts should be adequately insulated to prevent Failure to do so could result in personal injury or death. -
Page 10: Electrical
HX/HXX/HXS IOM ELECTRICAL These units are provided with a Class 2 transformer for WARNING 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 ELECTRIC SHOCK HAZARD transformers by using a thermostat with isolating To avoid the risk of the fire or equipment damage, use only contacts. -
Page 11: Wiring Diagrams
HX/HXX/HXS IOM WIRING DIAGRAMS Figure 1- 208/240V 1 ELEMENT HEATER, PSC Figure 2 208/240V 2 ELEMENT HEATER, PSC IOM4106 (Rev. B 1/25) - Page 12 HX/HXX/HXS IOM WIRING DIAGRAMS Figure 3 208/240V NO HEAT, PSC Figure 4 120V NO HEAT, PSC IOM4106 (Rev. B 1/25)
- Page 13 HX/HXX/HXS IOM WIRING DIAGRAMS Figure 5 208/240V 1 ELEMENT HEATER, ECM Figure 6 208/240V 2 ELEMENT HEATER, ECM IOM4106 (Rev. B 1/25)
- Page 14 HX/HXX/HXS IOM WIRING DIAGRAMS Figure 7 208/240V NO HEAT, ECM Figure 8 120V NO HEAT, ECM IOM4106 (Rev. B 1/25)
-
Page 15: Minimum Room Size And Mitigation Airflow
HX/HXX/HXS IOM MINIMUM ROOM SIZE AND MITIGATION AIRFLOW These fan-coils are compatible with A1 as well as A2L refrigerants. However, additional critical components are required if they are used with A2L refrigerants. If not already pre-configured for A2L refrigerants from the factory a kit that is designed for a particular refrigerant must be field installed to ensure that any leakage of refrigerant is sensed and automatically mitigated. -
Page 16: A2L Sensor Mounting
HX/HXX/HXS IOM A2L SENSOR MOUNTING When the unit is connected to a system using A2L refrigerants, verify that the A2L Sensor is installed and functioning properly. Remove control box cover. Attach A2L sensor to bracket with provided screws. Attach bracket to unit. Use provided screws. Bracket is installed on the header side. -
Page 17: Mounting
HX/HXX/HXS IOM MOUNTING (Continued) CAUTION Extreme caution must be exercised to prevent internal damage during installation. Proper leveling and secure mounting will ensure optimal performance and prevent issues such as improper drainage or operational instability. Always consult local building codes and applicable standards during installation. -
Page 18: Physical Dimensions
HX/HXX/HXS IOM PHYSICAL DIMENSIONS Figure 13 - PHYSICAL DIMENSIONS PHYSICAL DIMENSIONS (CM) HX MODEL HXS MODEL HXX MODEL 37.19" 34.07" 30" 6.50" 36.30" 18,19,24 HX 18,19,24 HXS 12, 19, 24 HXX (94.46) (86.54) (76.20) (16.50) (92.20) 43.19" 40.07" 36" 6.50" 42.30"... -
Page 19: Enclosure Dimensions
HX/HXX/HXS IOM ENCLOSURE DIMENSIONS KNOCKOUT FOR DUCTED RETURN (Requires remote filter louver – field supplied) (Ducted return requires non-louvered panel) Figure 14 - ENCLOSURE DIMENSIONS ENCLOSURE DIMENSIONS (CM) HX MODEL HXS MODEL HXX MODEL ENCLOSURE NO. 39-3/4" 30-5/8" 28" 18,19,24 HX 18,19,24 HXS 12, 19, 24 HXS 9EHX01... -
Page 20: Cooling Coil Piping
HX/HXX/HXS IOM COOLING COIL PIPING ELECTRIC HEATERS HX, HXX, & HXS units are available with factory installed WARNING electric heat. Electric heaters must not be added to the HX, HXX, & HXS cabinet as a field installed item. When soldering and brazing, have a fire extinguisher readily available. -
Page 21: Refrigerant Charging
HX/HXX/HXS IOM REFRIGERANT CHARGING WARNING WARNING IMPROPER HANDLING OF REFRIGERANTS CAN CAUSE FIRE OR EXPLOSION HAZARD INJURY, EXPLOSION AND DEATH Failure to following this warning could result in personal • It is illegal to release refrigerant into the injury, death and/or property damage. atmosphere. -
Page 22: Refrigerant Charging Instructions
HX/HXX/HXS IOM REFRIGERANT CHARGING (Continued) Ensure that the detector is not a potential source of WARNING ignition and is suitable for the refrigerant used. Leak detection equipment shall be set at a percentage of the • Explosion risk, recover refrigerant only in a cylinder LFL of the refrigerant and shall be calibrated too the designed and intended for this purpose refrigerant employed, and the appropriate percentage... -
Page 23: Accessories
HX/HXX/HXS IOM ACCESSORIES WIRING – 24 VOLT AC When installing a heat pump with a HX/ HXX / HXS unit The pigtail leads are connected between the “W” lead at equipped with electric heat, a 942-1 heat pump kit must the fan coil unit and the thermostat lead that energizes be installed. -
Page 24: Operation And Maintenance
HX/HXX/HXS IOM OPERATION AND MAINTENANCE START-UP AND MAINTENANCE WARNING WARNING FIRE OR EXPLOSION HAZARD Failure to following this warning could result in personal ELECTRIC SHOCK HAZARD injury, death and/or property damage. Do not attempt any sealed system repair without first recovering the entire Disconnect all power supplies before servicing. -
Page 25: Drain Piping
HX/HXX/HXS IOM OPERATION AND MAINTENANCE (Continued) MOTOR DRAIN PIPING Check motor connections to ensure that they are secure The drain should always be: and made in accordance with the wiring diagram. • Connected or piped to an acceptable disposal The blower motor should be cleaned annually. point sloped away from the unit at least 1/8”... - Page 26 HX/HXX/HXS IOM OPERATION & MAINTENANCE (continued) REFRIGERANT DETECTION SENSOR (RDS) INFORMATION CHECKING FOR PRESENCE OF REFRIGERANT For equipment utilizing A2L refrigerants, a Refrigerant The area shall be checked with an appropriate Detection System (RDS) is installed on this unit to detect refrigerant detector prior to and during work, to ensure any A2L refrigerant leakage in the coil internal the technician is aware of potentially toxic or flammable...
- Page 27 HX/HXX/HXS IOM OPERATION & MAINTENANCE (continued) CHECKS TO THE REFREIGERATING EQUIPMENT CABLING Where electrical components are being changed, they Check that cabling will not be subject to wear, corrosion, shall be fit for the purpose and to the correct excessive pressure, vibration, sharp edges or any other specification.
-
Page 28: Charging Procedures
HX/HXX/HXS IOM OPERATION & MAINTENANCE (continued) REMOVAL AND EVACUATION OF FLAMMABLE CHARGING PROCEDURES REFRIGERANTS In addition to conventional charging procedures, the When breaking into the refrigerant circuit to make following requirements shall be followed. repairs – or for any other purpose – conventional •... - Page 29 HX/HXX/HXS IOM OPERATION & MAINTENANCE (continued) DECOMISSIONING LABELING Before carrying out this procedure, it is essential that the Equipment Shall be labelled stating that it has been de- technician is completely familiar with the equipment and commissioned and emptied of refrigerant. The label shall all its detail.
- Page 30 HX/HXX/HXS IOM OPERATION & MAINTENANCE (continued) Status Light Table for Refrigerant Detection System (RDS) Status Light State / Condition System Response Green Blinking Normal Operation The system is actively monitoring refrigerant levels. No refrigerant detected above the activation threshold. Outdoor unit compressor and indoor blower operate normally. Red Continuous Refrigerant Leak Refrigerant concentration exceeds the activation threshold.
-
Page 31: Notes
HX/HXX/HXS IOM NOTES IOM4106 (Rev. B 1/25) - Page 32 P.O. Box 270969 Dallas, TX 75227 www.firstco.com or www.ae-air.com The manufacturer works to continually improve its products. It reserves the right to change design and specifications without notice. ©2022 First Co., Applied Environmental Air...
Need help?
Do you have a question about the HX Series and is the answer not in the manual?
Questions and answers