This document describes the FRIMEC International Fan Coil Unit (FCU) series, including Concealed Type (FCR, FFM), Low Noise Concealed Type (FCRQ), High Delta-T Ceiling Concealed Type (FCR), Cassette Type (FKM), and Wall Mounted Type (FWM) models. These units are designed for air handling systems, offering a range of capacities and configurations to suit various applications.
Function Description
The FRIMEC Fan Coil Units are designed to provide efficient air handling, including cooling and heating, for various indoor environments. They operate by circulating air over a heat exchanger coil, which either cools or heats the air depending on the water temperature supplied to the coil. Different models cater to specific installation requirements, such as concealed ceiling, low noise, high static pressure, cassette, and wall-mounted applications.
Important Technical Specifications
General Data - Ceiling Concealed FCU (FCR-E, FCR-B):
- Air Flow (CMH/CFM): Ranges from 190 CMH (112 CFM) for low speed on FCR200E to 2400 CMH (1412 CFM) for high speed on FCR1400E.
- Total Cooling Capacity (W): From 1665 W (FCR200E low speed) to 13000 W (FCR1400E high speed).
- Sensible Cooling Capacity (W): From 960 W (FCR200E low speed) to 9360 W (FCR1400E high speed).
- External Static Pressure (Pa): Available in 30 Pa and 60 Pa options.
- Filter: Washable Nylon, 8mm thickness.
- Fan: Centrifugal Forward Curved Blades, Galvanized Steel, Direct-drive.
- Motor: Permanent Split Capacitor with Thermal Overload Protection, Insulation Class B, 220~240V/1Ph/50~60Hz.
- Rated Power Input (W): From 42 W (FCR200E at 30 Pa) to 340 W (FCR1400E at 60 Pa).
- Cooling Coil: Seamless copper tubes mechanically bonded to aluminium hydrophilic fins and collars, Max. Working Pressure 2 MPa, DN20 (3/4") Female Threaded pipe connection.
- Water Flow Rate (l/s): From 0.11 l/s (FCR200E) to 0.62 l/s (FCR1400E).
- Water Pressure Drop (kPa): From 10 kPa (FCR200E) to 49 kPa (FCR1400E).
- Net Weight (kg): From 13 kg (FCR200E) to 39 kg (FCR1400E).
- Dimensions (mm): Lengths from 705 mm (FCR200E) to 1765 mm (FCR1400E), Width 470-490 mm, Height 240-300 mm.
- Sound Pressure Level (dB(A)): From 39 dB(A) (FCR200E at 30 Pa) to 56 dB(A) (FCR1400E at 60 Pa).
- Condensate Drain Size: DN20 (3/4") Male Threaded.
General Data - Low Noise Ceiling Concealed FCU (FCRQ-B, FCRQ-C):
- Air Flow (CMH/CFM): From 340 CMH (200 CFM) for low speed on FCRQ400B/C to 1360 CMH (800 CFM) for high speed on FCRQ800B/C.
- Total Cooling Capacity (W): From 2925 W (FCRQ400B/C low speed) to 7950 W (FCRQ800B/C high speed).
- External Static Pressure (Pa): 30 Pa.
- Motor: FCRQ-B uses Permanent Split Capacitor (AC Motor), FCRQ-C uses Permanent Magnet DC Brushless Motor (DC Motor).
- Rated Power Input (W): From 41 W (FCRQ400C) to 135 W (FCRQ800B).
- Sound Pressure Level (dB(A)): Low noise models offer significantly lower sound levels, e.g., 23 dB(A) (FCRQ400B/C low speed).
General Data - High Delta-T Ceiling Concealed FCU (FCR-B 4 rows coil):
- Air Flow (CMH/CFM): From 240 CMH (141 CFM) for low speed on FCR200B to 2750 CMH (1618 CFM) for high speed on FCR1400B.
- Total Cooling Capacity (W): From 1784 W (FCR200B low speed) to 13726 W (FCR1400B high speed).
- External Static Pressure (Pa): 75 Pa.
- Rated Power Input (W): From 65 W (FCR200B) to 615 W (FCR1400B).
- Water Flow Rate (l/s): From 0.23 l/s (FCR200B) to 1.36 l/s (FCR1400B).
- Sound Pressure Level (dB(A)): From 46 dB(A) (FCR200B) to 61 dB(A) (FCR1400B).
General Data - High Air Volume FCU (FFM-BH 4 rows coil):
- Air Flow (CMH/CFM): From 815 CMH (479 CFM) for low speed on FFM800BH to 2490 CMH (1465 CFM) for high speed on FFM1600BH.
- Total Cooling Capacity (W): From 5300 W (FFM800BH low speed) to 15930 W (FFM1600BH high speed).
- External Static Pressure (Pa): 130 Pa.
- Rated Power Input (W): From 280 W (FFM800BH) to 700 W (FFM1600BH).
- Water Flow Rate (l/s): From 0.44 l/s (FFM800BH) to 0.86 l/s (FFM1600BH).
- Sound Pressure Level (dB(A)): From 58 dB(A) (FFM800BH) to 61 dB(A) (FFM1600BH).
General Data - Ceiling Cassette FCU (FKM):
- Air Flow (CMH/CFM): From 595 CMH (350 CFM) for low speed on FKM500A to 2550 CMH (1500 CFM) for high speed on FKM1400A.
- Total Cooling Capacity (W): From 4500 W (FKM500A) to 12900 W (FKM1400A).
- Fan Motor: Low Noise 4-Speed.
- Rated Power Input (W): From 76 W (FKM500A) to 225 W (FKM1400A).
- Water Flow Rate (l/s): From 0.22 l/s (FKM500A) to 0.62 l/s (FKM1400A).
- Sound Pressure Level (dB(A)): From 45 dB(A) (FKM500A) to 50 dB(A) (FKM1400A).
- Unit is equipped with water pump.
General Data - Wall Mounted FCU (FWM):
- Air Volume (CMH/CFM): From 510 CMH (300 CFM) for FWM300A to 1275 CMH (750 CFM) for FWM800A.
- Total Cooling Capacity (W): From 2640 W (FWM300A) to 7000 W (FWM800A).
- Rated Power Input (W): From 52 W (FWM300A) to 134 W (FWM800A).
- Sound Pressure Level (dBA): From 39±3 dBA (FWM500A) to 46±3 dBA (FWM800A).
Operating Range:
- Maximum water-side pressure: 2.0 MPa
- Minimum entering water temperature: 5°C
- Maximum entering water temperature: 80°C
- Minimum air inlet temperature: 5°C
- Maximum air inlet temperature: 43°C
- Power supply: 220-240V/1Ph/50Hz
Usage Features
- Slim and Compact Design: Light and rigid construction, suitable for installations with stringent space requirements. High Air Volume FCUs (FFM) have a height of only 430mm, ideal for high airflow needs in limited spaces.
- High Efficiency Heat Exchanger: Utilizes high-quality copper pipes with slit profile aluminum fins, designed for optimal heat transfer.
- Low Noise Operation: Achieved through stringent static and dynamic balancing tests of motors, combined with high-quality thermal and acoustic insulation.
- Multiple ESP Options: Standard fan coil units offer low ESP (0Pa), 30Pa, and 60Pa options. High Air Volume FCUs offer Standard ESP (40 Pa) and High ESP (130 Pa).
- Simple Installation: Unique design allows for easy on-site modifications of water pipe configuration (left or right). Accessories are available for trouble-free installation.
- No Leakage: Features a one-piece molded drain pan with integral thermal insulation and professional welding to prevent condensation and ensure proper water collection.
Maintenance Features
- Easy Maintenance: Equipped with high-quality electrical motors with low noise bearings that require minimal lubrication. Blowers and motors can be individually dismantled for cleaning of the heat exchanger. High-efficiency filters provide better filtration and longer operational life, and are easy to clean.
- Scheduled Cleaning: Dirty filters increase air resistance, and dirty heat exchangers reduce cooling capacity. Blocked drain pans can cause water dripping. Regular maintenance is crucial to clean filters, heat exchangers, and drain pans.
- Filter Requirement: Operating the unit without a filter is prohibited as it can lead to rapid blockage of the heat exchanger and poor heat transfer. Filters should be installed at the return air duct to maintain cleanliness of aluminum fins.
- Water Temperature Management: During summer, water temperature should not be lower than 5°C. During winter, it should not be higher than 80°C. Water must be treated and clean for optimum performance.
- Condensation Prevention: Avoid flowing cool water through the heat exchanger when the fan motor is idle, as this can cause extensive condensation. If the control system doesn't prevent this, manually close the water circuit using a hand valve.
- Long-Term Storage: For extended periods of non-use, water pipes and the heat exchanger should be filled with water to reduce internal corrosion. If the unit is idle throughout winter, the water pipe should be completely drained, and anti-freeze procedures adopted to prevent pipe breakage.
- Qualified Technicians: Installation and maintenance must be performed by qualified technicians familiar with local codes and regulations.
- Safety Precautions: Sharp edges on the unit and heat exchanger are potential hazards. Power supply must be disconnected before any maintenance work.
- Troubleshooting Guide: A guide is provided for common issues such as the unit not operating, low airflow, bad odor, condensation, and water leakage, along with possible causes and solutions. If issues persist, contact a local dealer or service personnel.
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