Heat recovery unit Domestic hot water High energy efficiency with R410A Compact and quiet Scroll compressors Brazed-plate heat exchangers Heating Heat recovery ENVIRONMENTALLY FRIENDLY HFC R410A PROTECTION DE L'ENVIRONNEMENT Heating capacity: 10 to 30 kw Use The operates on air from a CMV extraction system and is particularly suitable for hotels and healthcare facilities. This packaged unit is designed for indoor installation as standard. An outdoor installation kit is also available as an option. extracts heat energy from the outlet of a building s continuous mechanical ventilation (CMV) system and uses it to produce hot water. The system operates with a high coefficient of performance, significantly cutting the energy bill for domestic hot water production. It is designed for installation in a domestic hot water production system. However, it does not replace the system s main source of hot water, which should also protect against Legionella bacteria. Range Heat energy recovery unit operating on CMV exhaust air to produce domestic hot water. Three sizes available: 30V, 50V and 90V. Description is supplied as standard with the following components: - Air-source evaporator with axial fan motor assembly. - Control, automatic operation and electrical panel: Electrical power supply: Three-phase - 50 Hz - 400 V (+6%/-10%) + Earth. - Casing for indoor installation (optional outdoor installation kit available). - Brazed plate condenser. Complies with European directives: - Machinery directive (98/37/EC) - Electromagnetic compatibility EMC (2004/108/EC) - Pressure equipment PED (97/23/EC), category 2 Standards - EN 60204, EN 378-2 (NFC 15-100, France) 1
Technical characteristics TO 30V 50V 90V Net heating capacity (1) kw 10,36 18,08 31,75 Extracted air flow rate m 3 /h 2000 3500 5500 Net power input (2) kw 2,92 5,01 9,15 Absorbed Net power input with intermediate exchanger option (3) 3,38 5,59 9,91 Net COP (4) 3,55 3,61 3,47 Radiated sound level Lw / Lp (5) db(a) 66.8 / 34.8 71.3 / 39.3 75,8 / 43,8 Compressor Start-up mode Hermetic scroll (2900 rpm) Number of compressors 1 Power control % 100-0 Refrigerant oil type Direct Polyoster POE 3MAF (32 cst) Oil content l 1.25 1.24 3.25 Number of cooling circuits 1 Refrigerant (GWP) R410A (1720) Refrigerant content kg 2,6 2,7 3,7 Electrical power supply Three-phase - 50 Hz - 400 V (+6%/-10%) + Earth - Remote control transformer included Machine protection rating IP 43 Condenser Brazed-plate heat exchanger Water content l 1,72 2,07 3,15 Minimum water flow rate m 3 /h 0.8 1.8 2.5 Maximum water flow rate m 3 /h 2.2 3.8 6.7 Water connections Male 1¼ G Max. pressure, water end bar 4 Air-source evaporator Finned heat exchanger Fan mm 350 500 500 Motor power kw 0.16 0.35 0.66 Extracted air flow rate m 3 /h 2000 3500 5500 Height (excluding mounts) mm 965 Length mm 2227 Depth mm 1185 Net weight without optional intermediate exchangers kg 338 363 400 Net weight with optional intermediate exchangers 382 411 457 Storage temperature C 50 (1) Conditions: water: +50 C / +55 C - air: +22 C. (2) Compressor + fan absorbed power. (3) Compressor + fan + accelerator pump + heater absorbed power. (4) COP for gross values. (5) Lw: Overall sound power level as per ISO3744 Lp: Overall pressure levels measured at 10m in a free field, calculated using the formula LP=Lw-10 log S 2
Electrical characteristics 30V 50V 90V Electrical power supply Three-phase - 50 Hz - 400 V (+6%/-10%) + Earth - Remote control transformer included Max. rated current (1) A 7.2 11.3 17.8 Starting current (2) A 35.6 65.0 112.4 Starting current, Soft Start option A 21.6 39.4 67.9 Breaking capacity ka 10 Max. wire cross-section mm2 6 (1) Compressor + fan max. current (2) Compressor + fan + antifreeze heater + accelerator pump max. current Standard and optional equipment 30V 50V 90V Remote-control transformer Polyurethane coated coil fins Flexible sleeves for intake duct Coil protection screen Phase controller (direction, absence, over and under voltage) Soft start Supplied as standard Supplied as standard Supplied as standard Supplied as standard 600 micron water filter + valves Kit (supplied separately) Hydraulic hoses Secondary exchanger + accelerator pump + expansion vessel + frost protection Frost protection Sound insulation jacket Resilient mounts Canopy for outdoor installation Kit (supplied separately) Kit (delivered unassembled) Air flow characteristics Air flow (m 3 /h) Number of rooms in building Extracted air flow rate per room (m 3 /h) 20 25 30 35 40 45 50 55 60 30V 2000 100 80 67 57 50 44 40 36 33 50V 3500 175 140 117 100 88 78 70 64 58 90V 5500 275 220 183 157 138 122 110 100 92 NOTE: (1) There is no pressure available for the network. The fan is designed to combat the pressure drop in the unit itself. (2) Maintain a CONSTANT flow of air 3
Hydraulic and air flow configurations n Installation with direct production in the DHW tank exchanger Hot water outlet Without secondary exchanger option s m e a Electric heating element or exchanger DHW loop mini 30 C V3v Baffle Cold water inlet n Production of hot water in a DHW exchanger outside the tank With secondary exchanger option, supplied and mounted in the ecociat Heat recovery Direct DHW system V3v Hot water outlet s m e DHW loop mini 28 C V3v NOTE: Internal installation recommended Cold water inlet With secondary exchanger in mechanical room Heat recovery Direct DHW system V3v s m e DHW loop mini 28 C V3v Cold water inlet Hot water hydraulic circuit : air-to-water recovery unit Psl Pump water shortfall pressure switch V3v Three-way valve e Expansion vessel C Retaining valve m Pressure gauge R Cut-off valve S Pressure release valve Pe Accelerator pump T Temperature sensor pocket A Water top-up Air flow direction CMV discharge duct damper box VMC Filter + valve kit (option) Flexible connection kit (option) General comments: P Air vents at pipe high points V Drain tappings at pipe low points A damper box must be placed on the suction section of for two reasons. If the flow of air extracted by the CMV system is higher than that carried by the unit, it will open to vent part of the flow. If is stopped, it will vent the entire flow of the CMV system. IMPORTANT: these principle diagrams are provided for information only and must not be construed as detailed execution diagrams. 4
Main components Casing - Detachable double-skin galvanised steel panels. - RAL 7024 lacquered paint. - Intake connection frame. - Coil protection screen on outlet. - : canopy for outdoor installation. Hermetic scroll compressor - Built-in motor, cooled by gas intake. - Motor protected by internal winding thermostat. - Installed on anti-vibration mounts. Condenser - Brazed plate exchanger. - AISI 316 stainless steel end and inner plates. - Plate patterns optimised for high efficiency. - Thermal insulation. Evaporator - High-efficiency air-cooled heat exchanger (polyurethanecoated aluminium fins, optimised profile, grooved copper tubes). - Propeller fans with contoured aluminium blades. - IP 54, class F motor. Control functions and safety devices - Fusible plug to protect against excess pressure. - Thermostatic expansion valve. - High and low pressure safety mechanisms on cooling circuit. - Hygroscopic sight glass. - Dryer filter. - Unit start-up sequence. - Short-cycle protection. operating range (at full capacity) Electrical box The fully wired electrical box housing all the electrical components supervises the operation of the unit and provides an interface with an external control system. The box features: - Control and power circuits. - Transformer for the control circuit. - Numbered wiring. - Main safety switch with handle on front. - Circuit breakers for control and power circuits. - Contact switches for compressor motor, fan and pump. - Main earth connection. - Potential-free terminals for alarm and information signals (signalling of manual reset and automatic reset alarms, shortcycle protection and contacts for remote control). Intermediate heat exchanger (optional) - 316 stainless steel gasketed-plate heat exchanger, cleanable mechanically. - Accelerator pump for primary loop. - Expansion vessel for primary loop. - Safety valve. - Frost protection. Hot water temperature 55 50 45 40 35 16 20 25 30 Extracted air temperature C 5
Noise levels Domestic hot water The distinguishing feature of the range is that it has been carefully designed to reduce noise and vibrations: n Compressor on anti-vibration mounts n Pipes decoupled from unit structure n Low-speed fan n Insulated double-skin walls n Sound power levels ref 2 x 10-12 W ±3 db (Lw) Exterior, radiated SOUND POWER SPECTRUM (db) Overall Lw 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz level db(a) 30V 72.6 64.8 60.4 64.6 60.4 54.7 45.6 67.9 50V 85.5 74.5 69 67.7 62.4 57.3 50.1 74 90V 83.7 71.3 70.4 71.3 69.2 65 56 76.2 With jacket SOUND POWER SPECTRUM (db) Overall Lw 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz level db(a) 30V 71.4 63.6 59.1 61 57.5 51.9 42.5 65.1 50V 83.8 72.8 67.2 64.6 59.9 54.3 46.2 71.9 90V 82.2 68.7 68.9 68.9 67.1 62.7 53.2 74.1 n Sound power levels ref 2 x 10-12 W ±3 db (Lw) On intake sleeve SOUND POWER SPECTRUM (db) Overall Lw 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz level db(a) 30V 72.3 65.8 62.2 64.3 62.5 59.4 53.3 69 50V 85 75.8 72 70.4 66.2 64.5 58.5 76.1 90V 81.7 75.3 74.1 74.2 74.4 71 64.6 80.1 With jacket SOUND POWER SPECTRUM (db) Overall Lw 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz level db(a) 30V 71.5 64.9 61.4 61.7 60.5 57.6 51.4 67.1 50V 83.1 73.9 70 67.9 64.2 63.4 55.9 74.1 90V 80 73.6 72.4 72.5 72.7 69.3 62.9 78.4 n Sound power levels ref 2 x 10-5 Pa ±3 db (Lp) Exterior, radiated SOUND PRESSURE SPECTRUM (db) Overall Lp level db(a) 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz 30V 41 33.2 28.8 33 28.8 23.1 14 36.3 50V 53.9 42.9 37.4 36.1 30.8 25.7 18.5 42.4 90V 52.1 39.7 38.8 39.7 37.6 33.4 24.4 44.6 With jacket SOUND PRESSURE SPECTRUM (db) Overall Lp 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz level db(a) 30V 39.8 32 27.5 29.4 25.9 20.3 10.9 33.5 50V 52.2 41.2 35.6 33 28.3 22.7 14.6 40.3 90V 50.6 37.1 37.3 37.3 35.5 31.1 21.6 42.5 NB: : Sound pressure levels depend on each system and its surrounding environment. As such, the levels listed above are given for information only. Here, they are given for sound pressure levels measured in a free field, with a directivity of 2, and at a distance of 10 metres from the unit. We remind you that only sound power levels are comparable and certified. 6
Heating capacities 30V 50V 90V CONDENSER WATER OUTLET TEMPERATURE ( C) Temperature 35 40 45 50 55 of extracted air Hc Pi Hc Pi Hc Pi Hc Pi Hc Pi COP COP COP COP kw kw kw kw kw kw kw kw kw kw COP 18 10.93 1.82 6.01 10.64 2.05 5.19 10.32 2.31 4.47 10.03 2.6 3.86 9.72 2.94 3.31 20 11.3 1.81 6.24 11 2.04 5.39 10.59 2.3 4.60 10.36 2.58 4.02 10.03 2.91 3.45 22 11.66 1.81 6.44 11.33 2.04 5.55 11 2.28 4.82 10.68 2.57 4.16 10.33 2.89 3.57 24 12 1.88 6.63 11.65 2.03 5.74 11.31 2.28 4.96 10.96 2.56 4.28 10.62 2.88 3.69 26 12.3 1.81 6.80 11.95 2.03 5.89 11.6 2.28 5.09 11.24 2.55 4.41 10.89 2.86 3.81 28 12.59 1.8 6.99 12.22 2.03 6.02 11.85 2.27 5.22 11.48 2.55 4.50 11.1 2.85 3.89 30 12.86 1.80 7.14 12.47 2.03 6.14 12.09 2.27 5.33 11.71 2.54 4.61 11.34 2.84 3.99 18 18.14 3.18 5.7 17.78 3.55 5.01 17.46 3.96 4.41 17.13 4.44 3.86 16.78 5 3.36 20 18.88 3.19 5.92 18.51 3.56 5.20 18.15 3.96 4.58 17.8 4.43 4.02 17.41 4.98 3.50 22 19.59 3.2 6.12 19.21 3.57 5.38 18.83 3.97 4.74 18.45 4.42 4.17 18.03 4.96 3.64 24 20.31 3.21 6.33 19.91 3.58 5.56 19.5 3.98 4.90 19.08 4.43 4.31 18.65 4.96 3.76 26 21.04 3.21 6.55 20.6 3.6 5.72 20.16 4 5.04 19.51 4.46 4.37 19.21 4.96 3.87 28 21.69 3.25 6.67 21.25 3.62 5.87 20.75 4.01 5.17 20.25 4.45 4.55 19.78 4.97 3.98 30 22.28 3.26 6.83 21.8 3.63 6.01 21.29 4.03 5.28 20.77 4.47 4.65 20.25 4.97 4.07 18 32.2 5.98 5.38 31.22 6.63 4.71 30.62 7.33 4.18 30.02 8.08 3.72 29.44 8.95 3.29 20 33.06 6.08 5.44 32.46 6.68 4.86 31.76 7.36 4.32 31.14 8.1 3.84 30.52 8.98 3.40 22 34.34 6.13 5.60 33.66 6.73 5 32.97 7.4 4.46 32.28 8.16 3.96 31.62 9.02 3.51 24 35.61 6.17 5.77 34.83 6.77 5.14 34.13 7.45 4.58 33.37 8.2 4.07 32.66 9.06 3.60 26 36.75 6.21 5.92 36.01 6.82 5.28 35.25 7.5 4.70 34.45 8.25 4.18 33.69 9.11 3.70 28 37.94 6.26 6.06 37.13 6.87 5.40 36.29 7.54 4.81 35.47 8.3 4.27 34.66 9.14 3.79 30 39.04 6.3 6.2 38.17 6.91 5.52 37.33 7.59 4.92 36.39 8.35 4.36 35.51 9.18 3.87 Pi: Gross power input - Hc: Hc: Gross heating capacity Calculated fouling 0.00005 m2 C / W 7
Pressure drop from hot water heat exchanger Condenser (do not extrapolate) Intermediate exchanger option (do not extrapolate) p mwc 3 2,5 2 1,5 1 0,5 30 50 90 p mwc 1.5 1 0.5 TO 30 TO 50 TO 90 0 0 1 2 3 4 5 6 7 0 0 1 2 3 4 5 6 7 Flow rate in m 3 /h Flow rate in m 3 /h Filter (mandatory) Water pressure drop (mwc) 8 6 5 4 3 2 30-50-90 1 0.8 0.6 0.5 0.4 0.3 0.2 0.1 1 1.5 2 2.5 3 4 5 6 7 8 Water flow rate (m 3 /h) 8
Dimensions A F 2 1 B E C D H 4 4 4 3 Exhaust air intake Air discharge Centre of gravity al rain canopy Connection sleeve Leave space around the unit for maintenance Positions of anti-vibration mounts A Coil, pump access panel B Fixed access panel for hydraulic and electrical connections C Removable panel for access to electrical panel and expansion valve - dryer D Removable panel for access to compressor, condenser and fan E Electrical power supply (dia. 28 mm) F User electrical connections (dia. 28 mm) H Condensate drain pipe (dia. 22.2 mm) 1 Water inlet, 136 x 136 mm (1¼ G male coupling) 2 Water Outlet, 136 x 136 mm (1¼ G male coupling) 3 Four removable legs (remove on site) 4 Lifting points (dia. 45 and 48 x 70 mm) Length L mm Width W mm Height H mm Weight kg Without secondary exchanger option With secondary exchanger option Rain canopy only option Empty In operation Empty In operation 30V 2227 1185 965 338 344 382 392 50V 2227 1185 965 363 370 411 424 90V 2227 1185 965 400 408 457 473 26 9
Installation recommendations NOTA : Sound pressure levels depend on each system and its surrounding environment. As such, the levels listed above are given for information only. Here, they are given for sound pressure levels measured in a free field, with a directivity of 2, and at a distance of 10 metres from the unit. We remind you that only sound power levels are comparable and certified. As per ISO 3744 Lp = Lw - 10 log S Water quality criteria It is essential to install a a 600 micron water filter on the unit s water inlet. An appropriate filter is available as an option from CIAT. The quality of the water used directly affects whether or not the hot water unit operates correctly in accordance with specifications and with the assurance of an optimised service life. Poor quality water can result in fouling or corrosion and can allow algae or microorganisms to form. It is essential to analyse the water to guarantee that it is suitable for use with the unit and to determine whether or not chemical treatment is sufficient to achieve sufficient quality or whether a water softener and/or demineralisation system is necessary. The analysis must confirm whether or not the water is compatible with the materials used in the water circuit: - 99.9% copper tubes brazed with copper and silver. - Threaded bronze couplings or flat steel flanges, depending on the unit model. - Plate heat exchangers and AISI 316-1.4401 stainless steel connections, brazed with copper and silver. The guarantee shall be void if these instructions are not followed. Lifting and handling The utmost safety precautions must be taken when lifting and handling the unit. It is essential to comply with the lifting diagram affixed to the unit and included in the Instructions, Installation, Before attempting to lift the unit, make sure the path leading to its intended location is free from obstacles. Always handle vertically; never tilt the unit. Choosing a location for the unit Standard versions of the are designed for indoor installation. Outdoor versions are optionally available; precautions must be taken to protect them against frost. Particular attention must be paid to ensure sufficient clearance for maintenance. The unit must be installed on a perfectly flat, level, noncombustible surface. The floor must be strong enough to withstand the weight of the machine during operation. Noise pollution from auxiliary equipment such as pumps should be studied thoroughly. Potential noise transmission routes should be studied, with assistance from an acoustical engineer if necessary, before installing the unit. In particular, flexible sleeves on pipes are highly recommended (available as an option). The room in which the unit is installed must comply with the requirements of EN 378-3 and other specifications applicable on the installation site. Installation of accessories supplied separately Several optional accessories are supplied separately and must be installed on the unit on site. It is essential to comply with the Instructions, Installation, Electrical connections It is essential to comply with the Instructions, Installation, All information concerning electrical connections is stated on the wiring diagrams provided with the unit. Always follow this information. Electrical connections must be made in accordance with best current practices and applicable standards and regulations. Electrical connections to be wired on site: - Electrical power supply to unit. - External operation control. - Remote signalling. It should be noted that the unit s electrical system is not protected against lightning strikes. Appropriate protection against transient phenomena must therefore be installed on site in the electric power supply box. Water connections It is essential to comply with the Instructions, Installation, All pipes must be correctly aligned and slope toward the system s drain valve. Pipes must be installed and connected, with sufficient space for access to panels, and thermally insulated. Pipe brackets and attachments must be independent to avoid any vibrations or forces on the unit. Water shut-off and control valves must be fitted when the unit is installed. Water connections on site: - Water supply with pressure-reducing valve. - Evaporator, condenser and discharge. The following are a few examples of accessories essential to any hydraulic system and which must also be installed: - Expansion vessel. - Drain tappings at pipe low points. - Exchanger shut-off valves equipped with filters. - Air vents at pipe high points. - Check the system s water capacity (install a buffer water tank if necessary). - Flexible connection sleeves at exchanger inlets and outlets, if necessary. - Manual water flow rate adjustment valves. - Thermometers on each water inlet and outlet to allow all the necessary checks during start-up and maintenance. 10
Important: - The pressure in the water circuits must be less than 8 bar (4 bar for an intermediate loop). - Place the expansion vessel before the pump. - Do not place any valves on the expansion vessel. - Test the water quality in accordance with the relevant technical requirements. - Provide appropriate protection to protect the machine and the hydraulic system against freezing, such as the possibility of draining the circuit. - Flush pipes with clean water to remove contaminants before finalising the hydraulic connections. Switching on for the first time TO units must be commissioned by CIAT or a CIAT-approved contractor. It is essential to comply with the Instructions, Installation, Partial list of pre-commissioning checks: - Correct positioning of unit. - Power supply protections. - Phases and direction of rotation. - Wiring connections on unit. - Direction of flow in unit. - Cleanliness of water circuit. - Water flow rate at specified value. - Pressure in the refrigeration circuit. - Direction of rotation of compressor. - Water pressure drops and flow rates. - Operating readings. 842/2006/EC relating to certain greenhouse gases, and with the corresponding implementing orders. Note about domestic hot water supply systems: - Standard EN 1717 states that a customer s domestic hot water supply cannot be in direct contact with the unit s condenser. The two must be separated by a heat exchanger. The optional secondary-circuit gasketed plate exchanger is strongly recommended if the storage tank is not fitted with an internal exchanger. - is used to preheat domestic hot water. Its temperature must be raised using the main means of heating and in compliance with regulations to prevent the growth of Legionella bacteria in the system. Important: all safety precautions must be taken so that the water temperature at points of use cannot exceed 60 C during treatment. To limit scale deposits, it is advisable to continuously circulate water inside the optional secondary gasketed plate exchanger. If is used with a tank with a built-in exchanger (no optional secondary exchanger) and if anti-freeze is used in the exchanger s water circuits, it must be food grade (such as monopropylene glycol). Never use monoethylene glycol or any other toxic anti-freeze Maintenance operations Specific preventive maintenance operations are required at regular intervals and should be performed by CIAT-approved contractors. The operating settings must be recorded on a special checklist and sent to CIAT. It is essential to comply with the Instructions, Installation, You must take out a maintenance contract with a CIATapproved refrigeration equipment specialist. Such a contract is required even during the warranty period Leaktightness inspections and leak reduction operations must be performed in accordance with European directive This document is non-contractual. As part of its policy of continual product improvement, CIAT reserves the right to make any technical modification it feels appropriate without prior notification. Head office Avenue Jean Falconnier - B.P. 14 01350 - Culoz - France Tel.: +33 (0)4 79 42 42 42 Fax: +33 (0)4 79 42 42 10 info@ciat.fr - www.ciat.com CIAT Service Tel. : 08 11 65 98 98 (0,15 / mn) Fax : 08 26 10 13 63 (0,15 / mn) Compagnie Industrielle d Applications Thermiques - S.A. with a registered capital of 26 728 480 - R.C.S. Bourg-en-Bresse B 545 620 114 11