HEF2 Series. Evaporative Humidifiers for Air Handling Units (A.H.U.) Installation and maintenance manual

Transcription

1 Installation and maintenance manual HEF2 Series Evaporative Humidifiers for Air Handling Units (A.H.U.) In compliance with European Union Standards for machinery safety, it is essential to read this manual in detail before installing units. MHEF2-EN-16-2

2 HEF2 Series Installation and maintenance manual Contents 04 General description 05 Assembly of accessories delivered as parts (Recirculated Water) 06 Assembly of accessories delivered as parts (Direct Water) 07 Mechanical design, operating principles and list of components HEF2 Series (recirculated water, standard on/off) 09 Mechanical design, operating principles and list of components HEF2 Series-DW (direct water, standard on/off) 11 Mechanical design, operating principles and list of components HEF2 Series (recirculated water with stage control) 14 Mechanical design, operating principles and list of components HEF2 Series-DW (direct water, stage control) 16 Installation requirements 17 Connections, settings and regulations 18 Connections and Settings/Regulations Made (Standard - Recirculated Water) 19 Dimensional drawing Hef2 Series (Recirculated Water). Manual drain ball valve (standard) 20 Dimensional drawing HEF2 Series (Recirculated Water). Motor-zone Drain Valve (optional) 21 A Connection to the water supply for filling the water tank 22 B Connecting the drain to the water trap 23 C Electricity connection of the Fisair recirculation pump 25 D Level detector electricity connection 26 E Setting valves regulating evaporative cassette irrigation flow 26 F Adjusting the constant bleed-off regulation valve 27 Connections and settings/regulations made (Standard Direct Water) 28 HEF2 Series-DW (Direct Water) Water supply and basin draining dimensional drawing 29 A Connection to the water supply

3 3 30 B Connecting the drain to the water trap 30 E Setting of the irrigation valves in each evaporative cassette 31 Connections and settings/regulations made (Optional accessories for recirculated water) 32 Connections and settings/regulations made (Optional accessories for direct water) 33 A Connection of the 24V or 230V water tank filling N.C. solenoid valve 34 B Connection of the N.C. motor-zone valve for automatic draining of the HEF2 Series (recirculated water) 40 C Flexible connector for the water supply 40 D External rigid connector for the water supply 40 E External rigid connector for draining 41 F U.V. lamp disinfection system 42 G Perimeter closure cover plates 43 H Solenoid valve(s) connection for stage control 44 J HEF2 Series-DW for duct 46 K Piping system in stainless steel 46 N Connection of the 3-way motor-zone valve to manage the water supply and the emptying of the manifold/irrigation system 46 O Motor-zone valve for emptying of the manifold/irrigation system 47 Installation and recommendations 47 Maintenance 48 Cleaning and disinfection 49 Hygiene certificate 50 LATERAL Disassembly 55 FRONT Disassembly 57 Cleaning the individual irrigation system 59 HEF2 Series List of spare parts

4 HEF2 Series Installation and maintenance manual 4 General description EVAPORATIVE HUMIDIFIER OPERATING PRINCIPLES FISAIR evaporative humidifiers are units designed to increase the water vapour content of the treated air, by making use of the natural evaporation of water from its liquid phase. The air supply being treated is passed through a cellular panel dampened using an irrigation system. This panel is composed of undulating sheets of inorganic paper with stiffening and water absorbent additives. The layout, as channels criss-crossing the panel provides a huge surface for water-air contact, which maximises water evaporation, and reduces to a minimum resistance to the movement of the air (pressure drop). FISAIR evaporative humidifiers work in a similar way to natural processes in rivers, lakes and seas. The vapour added to the air is exclusively pure water vapour. PROVISIONAL STORAGE During storage, units must be kept dry and protected from the elements. Warning: Avoid direct sunlight and sites in which temperatures can exceed 50ºC. Plastic components and derivatives could be deformed. Thermohygrometric conditions during storage: Temperature: [-10 50ºC] Relative humidity: [5 95%HR] Without condensation HEF2 Series with recirculation HEF2 Series with recirculation

5 Fisair Air humidity control 5 Assembly of accessories delivered as parts (Recirculated Water) Note: These accessories can only be attached once the equipment is located inside the air handling unit. 1. ASSEMBLY SET (OVERFLOW + DRAINING + DRAINING VALVE) 1.1 Standard: A ball valve is used for draining. 1 PVC-U union for connection/tightening 1º ¾ PVC-U union for connection/tightening 2º 1.2 Optional: A motorized zone valve is used for draining. 1 PVC-U union for connection/tightening ¾ PVC-U union for connection/tightening 2. ASSEMBLY SET OF THE CONSTANT BLEED-OFF (*) ½ brass fitting to be attached to the regulation valve + bleed-off flow meter. 1º ½ PVC-U for connecting/tightening 2º (*) Not necesary with conductivity control.

6 HEF2 Series Installation and maintenance manual 6 Assembly of accessories delivered as parts (Direct Water) 1. ASSEMBLY Emptying set: Couple ½ / V PVC-U link onto the drain outlet towards the selected hand of the water drain. 2. ASSEMBLY Water supply solenoid valve set + rigid external connection (if applicable). Couple ½ Stainless steel link BSP.

7 Fisair Air humidity control 7 Mechanical design, operating principles and list of components HEF2 Series (recirculated water, standard on/off) MECHANICAL DESIGN The humidifier comprises the following elements: A stainless steel self-supporting chassis-water tank structure that houses the unit. A set of evaporative cassettes of variable sizes and thicknesses, depending on the model and stainless steel surround. A stainless steel float valve automatic control mechanism for the water supply, to maintain the appropriate level in the water tank, so the unit works correctly. This valve can be regulated in order to set it to the available water pressure in the network. A stainless steel water tank to hold the water, which is designed so it can be completely emptied by gravity. A distribution collector + regulation valves with flow meter set to supply the appropriate irrigation individually to the evaporative panels. A diversion from the water flow to the distribution collector regulates a constant flow of water, which is eliminated from the system in order to maintain a uniform amount of mineral salts in the irrigation water, which we will refer to as the Constant bleed-off system. (See page 26). DROPLET SEPARATOR Operating conditions giving rise to droplet carry-over, can be handled by adding a second PP profile panel to the humidifiers to capture the droplets being detached from the evaporative panel. A pump for supplying water from the water tank to evaporative panels (technical data on page 23). A stainless steel mechanism integrated into the water tank acting as an overflow for the system in the event of water level control faults. Process air A. Process air B. Humidified air C. Water supply D. Overflow A D F B 9 8 E C G E. Constant bleed-off F. Draining G. Water outlet to drain (draining + overflow + constant bleed-off) 1. Evaporative cassette 2. Droplet separator cassette (optional) 3. Water recirculation pump 4. Float/ball cock 5. Constant bleed-off + flow meter control valve 6. Panel irrigation + flow meter control valve 7. Filling valve/water tank level control (float valve) 8. Water tank draining valve 9. Filling solenoid valve (optional, supplied loose) 10. Max/min water level detector 11. Cut-off valve (depending on model)

8 HEF2 Series Installation and maintenance manual OPERATING PRINCIPLES EVAPORATIVE CASSETTE 1 EVAPORATIVE CASSETTE 2 HEF2 Series (Recirculated water, standard on/off) Bleed-off E Water supply C 8 F WATER TANK G D Overflow 6 A B C D E Process air Humidified air Water supply Overflow Constant bleed-off A 1 2 F G Draining Water outlet to drain (draining + overflow + constant bleed-off) 1 Evaporative cassette 2 Droplet separator (optional) 3 Water recirculation pump 5 Bleed-off regulation valve + flow meter E 7 G D 8 B C 6 Irrigation regulation valves + flow meter 7 Float valve (regulation of supply water) 8 Draining ball valve (standar) (*) 9 Filling solenoid valve (optional, supplied loose) 10 Max/min water level detector (*) Optionally the ball valve may be replaced by a zone motor-valve. 11 Cut-off valve (depending on model)

9 Fisair Air humidity control 9 Mechanical design, operating principles and list of components HEF2 Series-DW (direct water, standard on/off) MECHANICAL DESIGN The humidifier is composed of the following elements: A stainless steel self-supporting chassis-water tank structure that houses the unit. A set of evaporative panels of variable sizes and thicknesses, depending on the model and stainless steel surround. A stainless steel water tank to hold the water, which is designed so it can be completely emptied by gravity. DROPLET SEPARATOR Operating conditions giving rise to droplet carry-over, can be handled by adding a second PP profile panel to the humidifiers to capture the droplets being detached from the evaporative panel. Process air A distribution collector + regulation valves with flow meter set to supply the appropriate irrigation individually to the evaporative panels. A. Process air B. Humidified air C. Water supply D. Draining A 3 B F. Water outlet to drain (draining + overflow) 1. Evaporative cassette 2. Droplet separator cassette (optional) C 3. Panel irrigation control valve + flow meter 4. Water supply solenoid valve (optional, remove valves 5 and 7) 5. Water supply ball valve (standard) 6 6. Ball valve for manifold draining + water distribution draining (standard) (*) 1 2 D 7. 3-way motor valve for automatic water feeding and automatic emptying of the water manifold + water distribution (optional, remove valves 4, 5 and 6) (*) Optionally the ball valve may be replaced by a zone motor-valve.

10 HEF2 Series Installation and maintenance manual C 3 3 EVAPORATIVE CASSETTE 1 EVAPORATIVE CASSETTE 2 6 OPERATING PRINCIPLE hef2 series-dw (Direct water, standard on/off) WATER TANK D A Process air A 3 2 B Humidified air C Water supply D Draining 1 Evaporative cassette 2 Droplet separator (optional) C 3 Irrigation regulation valves + flow meter 4 Water supply ball valve (standard) 1 6 D 5 4 Codo D32 B Water supply solenoid valve (optional, remove valves 5 and 7) Ball valve for manifold draining + water distribution draining (standard) (*) 3-way motor valve for automatic water feeding and automatic emptying of the water manifold + water distribution (optional, remove valves 4, 5 and 6) (*) Optionally the ball valve may be replaced by a zone motor-valve.

11 Fisair Air humidity control 11 Mechanical design, operating principles and list of components HEF2 Series (recirculated water with stage control) MECHANICAL DESIGN The humidifier is composed of the following elements: A stainless steel self-supporting chassis-water tank structure that houses the unit. A set of evaporative panels of variable sizes and thicknesses, depending on the model and stainless steel surround. A stainless steel float valve automatic control mechanism for the network water supply, to maintain the appropriate level in the water tank, so the unit works correctly. This valve can be regulated in order to set it to the available water pressure in the network. A stainless steel water tank to hold the water, which is designed so it can be completely emptied by gravity. DROPLET SEPARATOR Operating conditions giving rise to droplet carry-over, can be handled by adding a second PP profile panel to the humidifiers to capture the droplets being detached from the evaporative panel. [Note] Each stage can include the irrigation of more than one cassette. The configuration of stages is variable and defined by the client. Process air A pump for supplying water from the water tank to the evaporative panels (technical data on page 23). A stainless steel mechanism integrated into the water tank acting as an overflow for the system in the event of water level control faults. The first stage is controlled with the pump on/off. The irrigation of cassette 1 is controlled. The other stages are controlled by opening the solenoid valve of each stage. A distribution collector + regulation valves with flow meter set to supply the appropriate irrigation individually to the evaporative panels. A diversion from the water flow to the distribution collector regulates a constant flow of water, which is eliminated from the system in order to maintain a uniform amount of mineral salts in the irrigation water, which we will refer to as the Constant bleed-off system. (See page 26.)

12 HEF2 Series Installation and maintenance manual 12 OPERATING PRINCIPLE FOR 2-STAGE CONTROL (*) A. Process air 9 B. Humidified air C. Water supply A 7 8 B D. Overflow E. Constant bleed-off F. Draining 15 5 E G. Water outlet to drain (draining + overflow + constant bleed-off) 1. Evaporative cassette 3 2. Droplet separator cassette (optional) C 3. Water recirculation pump 4. Float/ball D F 12 G 5. Constant bleed-off control valve + flow meter 7. Stage 1 panel irrigation control valve + flow meter 8. Stage 2 panel irrigation control valve + flow meter 9. Stage 2 N.C. solenoid valve A Filling/control valve for the water basin level (float valve) 12. Water basin draining valve (**) 13. Filling solenoid valve (optional) Min/max water level detector 15. Cut-off valve (depending on model) (*) With a maximum of 5 stages for the HEF2E with 5 cassettes (**) Optionally the ball valve may be replaced by a zone motor-valve E G D 12 5 C B 11

13 Fisair Air humidity control 13 OPERATING PRINCIPLE hef2 Series (Recirculated water with 2 stage control) 7 EVAPORATIVE CASSETTE EVAPORATIVE CASSETTE 2 Bleed-off E Water supply WLD 3 C 12 F WATER TANK G D Overflow C D E F Water supply Overflow Constant bleed-off Draining 7 Irrigation regulation valve + flow meter (stage 1) 8 Irrigation regulation valve + flow meter (stage 2) 9 N.C. solenoid valve (stage 2) 11 Float valve (supply water regulation) G Water outlet to drain (draining + overflow + constant bleed-off) 3 Water recirculation pump 5 Bleed-off regulation valve + flow meter 12 Water tank draining valve 13 N.C. filling solenoid valve (optional, supplied loose) 14 Min/max water level detector

14 HEF2 Series Installation and maintenance manual 14 Mechanical design, operating principles and list of components HEF2 Series-DW (direct water, stage control) MECHANICAL DESIGN The humidifier is composed of the following elements: A stainless steel self-supporting chassis-water tank structure that houses the unit. A set of evaporative panels of variable sizes and thicknesses, depending on the model and stainless steel surround. DROPLET SEPARATOR Operating conditions giving rise to droplet carry-over, can be handled by adding a second PP profile panel to the humidifiers to capture the droplets being detached from the evaporative panel. A stainless steel water tank to hold the water, which is designed so it can be completely emptied by gravity. A distribution collector + regulation valves with flow meter set to supply the appropriate irrigation individually to the evaporative panels. An N.C. irrigation control solenoid valve for each stage/ evaporative cassette. Process air A. Process air B. Humidified air 5 C. Water supply A 3 B D. Draining 1. Evaporative cassette 2. Droplet separator cassette (optional) 3. Panel irrigation control valve + flow meter C 4. Water supply solenoid valve (optional, remove valves 6 and 8) 5. Solenoid valves N.C. for each stage 7 6. Water supply ball valve (standard) 7. Ball valve for manifold draining + water distribution draining (standard) (*) 1 2 D 8. 3-way motor valve for automatic water feeding and automatic emptying of the water manifold + water distribution (optional, remove valves 4, 6 and 7) (*) Optionally the ball valve may be replaced by a zone motor-valve.

15 Fisair Air humidity control C EVAPORATIVE CASSETTE 1 EVAPORATIVE CASSETTE 2 7 D WATER TANK A Process air B Humidified air A 3 C Water supply D Draining 2 1 Evaporative cassette 2 Droplet separator (optional) D Codo D32 7 B (*) Optionally the ball valve may be replaced by a zone motor-valve. C 8 3 Irrigation regulation valves + flow meter 4 Water supply solenoid valve (optional, remove valves 6 and 8) 5 Solenoid valves N.C. for each stage 6 Water supply ball valve (standard) 7 8 Ball valve for manifold draining + water distribution draining (standard) (*) 3-way motor valve for automatic water feeding and automatic emptying of the water manifold + water distribution (optional, remove valves 4, 6 and 7)

16 HEF2 Series Installation and maintenance manual 16 Installation requirements Thermohygrometric operative conditions (*) Temperature: [5 40ºC] Relative Humidity: [5 95%HR] GENERALITIES In order to optimize maintenance/installation, humidifiers must be placed on a level waterproof surface, with a drain or run-off, so possible leaks can be dealt with during installation, set up, operation and maintenance. Assembly inside an air handling unit must ensure the air being treated passes through the evaporative panels, by closing off the perimeters adequately to prevent possible by-passes of the air flow. All humidifier components are employed downstream, or in other words, in the outlet of the humidified air, as standard. We recommend allowing for a 500 mm space before and after the unit for inspection and servicing. Although the humidifying matrix is not combustible, it is advisable to not exceed process air temperatures of 50ºC, in the event that the pump does not work and there is no resulting irrigation, because the irrigation piping material could be deformed. When the pump works, 40ºC should not be exceeded on the side of the pump. To ensure complete drying of the cooling pad, after a work period, the air fan of the UTA must be working during the times set out in the following table: LOCATION AND SERVICING SPACE The normal location of the humidifier in the air handling system is after the pre-heating coil and before the cold/ heating coil, if there is one. However, the position must be chosen by the project designer. The area where the water basin is located must be equipped with a peep-hole (minimum diameter of 150 mm) and lighting must be provided to allow periodic visual inspections. Air Velocity (V) m/s Aprox. extra working time of the air fan with a temperature between 20-25ºC V<2 15 min 2 V<3 3 V<4 4 V<5 12 min 9 min 6 min ASSEMBLY OF THE AIR HANDLING UNIT (A.H.U.) HEF2 Series humidifiers are normally used in conjunction with the air handling unit or A.H.U., after the (pre) heating coil and before the cold and/or (post) heating coil, as shown in the diagram below. Supply installation Adiabatic humidification at cold times of year with the best energy efficiency of any humidifying system. (*) Airflow situated at the pump zone or water supply zone.

17 CONNECTIONS, SETTINGS AND REGULATION Installation and maintenance manual HEF2 Series

18 HEF2 Series Installation and maintenance manual 18 CONNECTIONS AND SETTINGS/REGULATIONS MADE (STANDARD - Recirculated water) A Connection to the water supply (connection to external water at between 1 and 6 bar) B Connection to drain to the water trap C Electricity connection to the recirculation pump D Electricity connection to the level detector E Setting of the irrigation valves in each evaporative cassette F Constant bleed-off valve setting E B F A C D G 500 mm gaps recommended for maintenance B A G G 500 mm 500 mm

19 Fisair Air humidity control 19 HEF2 Series (RECIRCULATED WATER) Water supply and basin draining dimensional drawing MANUAL DRAIN BALL VALVE (standard) Water Supply 1/2 BSP-M Inlet Type (1) y (3) (*) 26,5 Water Supply (1) Inlet Type 1/2 BSP-M Left Outlet (Right Outlet Symmetric) 250 (***) 125 (**) 150 (****) 190 Process air Overflow Water Outlet To Drain Pvc-U D32-F A= Width HEF2 Series 275 Ball Valve Water Supply (2) Inlet Type 1/2 BSP-M 120 Water Supply (3) Inlet Type 1/2 BSP-M (***) 125mm for 570 < A < 2075mm 135mm for 2175 < A < 2975mm (*) 26,5mm for 570 < A < 2075mm 36,5mm for 2175 < A < 2975mm (**) 150mm for 570 < A < 2075mm 160mm for 2175 < A < 2975mm (****) 190mm for 570 < A < 2075mm 200mm for 2175 < A < 2975mm

20 HEF2 Series Installation and maintenance manual 20 HEF2 Series (RECIRCULATED WATER) Water supply and basin draining dimensional drawing MOTOR-ZONE DRAIN VALVE (optional) Water Supply 1/2 BSP-M Inlet Type (1) y (3) 120 (***) (*) 26,5 (**) 150 (****) 190 Process air Water Supply (1) Inlet Type 1/2 BSP-M Overflow Left Outlet (Right Outlet Symmetric) Water Outlet To Drain Pvc-U D32-F A= Width HEF2 Series Motor-Zone Valve Water Supply (2) Inlet Type 1/2 BSP-M 120 Water Supply (3) Inlet Type 1/2 BSP-M (***) 125mm for 570 < A < 2075mm 135mm for 2175 < A < 2975mm (*) 26,5mm for 570 < A < 2075mm 36,5mm for 2175 < A < 2975mm (**) 150mm for 570 < A < 2075mm 160mm for 2175 < A < 2975mm (****) 190mm for 570 < A < 2075mm 200mm for 2175 < A < 2975mm

21 Fisair Air humidity control 21 A Connection to the water supply for filling the water tank WATER CONNECTIONS Connect the water supply (A) to the ½ male BSP float valve (6) using suitable piping with a cut-off valve (1). We recommend the installation of a 0.5 mm light filter (2). The float valve can be regulated to set it to a range of water supply pressures, as shown in figure 1 on this page. WATER TANK WATER SUPPLY Adjust the water level of the water tank to between 3 cm below the level of the overflow by regulating the float valve. Regulating the float valve Fitted by others (*) 25mm Regulating by positioning the float valve vertically (25mm of play). A 20 spanner with parallel faces key is needed to carry out this operation. [Note] 25 mm for position 2 and 40 mm for position 1 and 3 (feed water). [Note] The water level must never fall below the minimum water level of the pump. Water levels below this minimum irreparably harm the pump. A 110º Regulating by swivelling the ball (110º Swing). Two 10 spanner with parallel faces key is needed to carry out this operation. Figure 1 Float valve ½ pitch Flow (l/min) mm 3/8 pitch Pressure (bars)

22 HEF2 Series Installation and maintenance manual 22 B Connecting the drain to the water trap DRAINING CONNECTIONS Connect the ø32 mm common outlet (female/glued PVC-U) for the draining / overflow / constant bleed-off (3), with no cut-off valve, to the network. A cut-off valve (4) (manual or automatic depending on specifications) is included to control drainage. * The connection of the water outlet to the drainage must include a water trap (5) high enough (2H) to exceed the pressure in the system, so the water tank can be completely emptied, for hygiene reasons. The system will also have the normal slope of typical drainage lines. Recovering water from the humidification process into the drinking water mains is absolutely prohibited. Water trap for positive pressures Fitted by others H 2H Hmin. (mm)= P(Pa)/10 P= Total fan pressure 2H H Water trap for negative pressure * HEF2 Seriess are supplied with a manual ball valve for draining as standard B 5 2H 3 4 PVC-U ø32 mm (glued) Draining valve closure Draining valve opening

23 Fisair Air humidity control 23 The humidifier must be disconnected automatically when the system fails to ease working conditions according to sanitary standard VDI6022. FISAIR recommends including our BASIC CONTROL PANEL (CCB) C Electricity connection of the Fisair recirculation pump Connect the electricity supply line to the terminal box of the water irrigation pump using a suitable connection (IP54 or higher). The protection and operation of the electricity supply to the pump must be determined by the project designer of the system. STAR CONNECTION (400V/III/50Hz) WIRING DIAGRAM THREE PHASE PUMP L3 L2 L1 X1 PE U1 V1 W1 400V/3Ph/50Hz PE U -..-A _.._ I> I X0 TRIANGULAR CONNECTION (230V/III/50Hz) X1 U1 V1 W1 Ejecución por otros. Not included. X1 P(W) 240W 125W 60W I(A) 0,4..0,63A 0,25..0,4A 0,1..0,16A U1 V1 W1 Pn Pump A bordo de unidad. Inside unit.

24 HEF2 Series Installation and maintenance manual 24 Power Rating In (240W)= 0,52A (400V/III/50Hz) In (125W)= 0,38 A (400V/III/50Hz) In (60W)= 0,12A (400V/III/50Hz) In (50W)= 0,48A (230V/IN/50Hz) Nombre Name I1 Description Descripción Isolator Seccionador for electrical para aislamiento insulationelectrico SEL X0 Exterior Caja exterior box X1 Pump Caja de connection conexión bomba box (IP55) N L1 230V/1N/50Hz PE PE U -..-A _.._ I> I1 13 X0 2 4 WIRING DIAGRAM SINGLE PHASE PUMP 3 Ejecución por otros. Not included. P(W) 50W I(A) 0,4..0,63A U1 V1 Pn Pump A bordo de unidad. Inside unit.

25 FISAIR PUMP CAPACITY CURVES 25 D Level detector electricity connection 1. Minimum level detector (low level): The minimum level must be connected to protect the workings of the recirculation pump as shown in the diagram in figure 1. Figure 1 S2 (Vmax = 110Vac) 2. Maximum level detector (high level): The maximum level is used as a security system in the event of a possible failure of the float valve of the water feed. It must not be used to regulate the water feed. If it has a solenoid valve, this level must be connected to this valve to shut off for safety. The connection must be made as shown in the diagram in figure 1. High level S1 max. level min. level pump Filling solenoid valve Low level [Important note] Maximum connection 110 Vac Common High level N.C High level N.O High level N.O Low level N.C Low level Common Low level

26 HEF2 Series Installation and maintenance manual Figure 1 Regulating with a flat head screwdriver where shown 26 E Setting valves regulating evaporative cassette irrigation flow Regulation valve + ½ brass flow meter for adjusting the irrigation of each cassette Adjust the irrigation valves of the evaporative cassettes so their surfaces are uniformly wet. The empirical value of approximately 1 litre/second for each square metre of irrigation surface is enough to exceed the water needed for evaporation. Generally, it is just necessary to ensure the irrigation of the panels has excess water falling into the water tank. Excess irrigation water is important to ensure constant and superficial washing of the panels. Example of irrigation x cassette: Cassette width (500mm) and panel thickness (150mm) 0.5mx0.15mx60= 4.5L/min [Note] The flow in L/min for each cassette can be found on the HEF2 Series selection sheet. F Adjusting the constant bleed-off regulation valve The importance of constant bleed-off based on conductivity Water evaporates because the water vapour pressure is higher in the evaporative panel than in the air passing through it. Since only the water evaporates, dissolved mineral salts remain in solution, which gradually increases their concentration, despite new water being added to compensate for the evaporation. In order to prevent the formation of mineral deposits on the surfaces of the evaporative panel (giving rise to a progressive increase in air pressure drop and reducing operational performance) it is essential to drain off some of the recirculated water to the network during the evaporation. Bleed-off based on the COC (cycle of concentration). Bleed-off = Evaporation (COC-1) Cycle of concentration COC based on conductivity ( µs/cm) Initial approximate settings can be made as 10% of the total flow of the irrigation. By regularly observing the state of the panels (on the air input side), after 1 or 2 weeks in use, if there are no white mineral deposits on the surfaces, the bleed-off flow can be reduced, or on the other hand, if there are lime deposits, it can be increased. Analytical parameters of the drinking water network (Recommended) Hardness of the water ( CaCO3): ppm Chlorine ( Cl): <55 ppm PH: 6-8 Silica (SiO): <30 ppm Iron ( Fe): <0.2 ppm Oils and grease: <2 ppm Total dissolved solids: <550ppm Total alkalinity ( CaCo3): ppm Suspended solids: <5 ppm Comment: Always in line with the recommended parameters of the drinking water supply. 100 µs/cm = 9 COC 550 µs/cm = 6 COC 1000 µs/cm = 2 COC Calculation example: Based on drinking water network parameters Water evaporation= 3.23 l/min Water conductivity= 550 µs/cm COC= 6 Bleed-off = 3.23/(6-1)= 0.65 l/min Regulation valve with flow meter to adjust the bleed-off. It is regulated using a screwdriver as shown in figure 1. [Note] The flow of the constant bleed-off cannot fall below 0.3 L/min. The flow in L/min of the bleed-off can be found on the HEF2 Series selection sheet.

27 Fisair Air humidity control 27 CONNECTIONS AND SETTINGS/REGULATIONS MADE (STANDARD DIRECT WATER) A Connection to the water supply (connection to external water at between 1 and 6 bar) B Connecting the drain to the water trap E Setting of the irrigation valves in each evaporative cassette G 500 mm gaps recommended for maintenance H 1/2 ball valve to cut off water feed I 1/2 ball valve for draining manifold and irrigation system E I B H A B G G A 500 mm 500 mm

28 HEF2 Series Installation and maintenance manual 28 HEF2 Series-DW (DIRECT WATER) Water supply and basin draining dimensional drawing Water Supply 1/2 BSP-M Inlet Type (1) y (3) 12,5 (***) (*) 26,5 (**) 150 Process air 12,5 Inlet Type (1) Water Supply 1/2 BSP-M Left Outlet (Right Outlet Symmetric) A= Width HEF2 Series 125 Water Outlet To Drain PVC-U D32-F 12,5 Inlet Type (3) Water Supply 1/2 BSP-M (*) 26,5mm for 570 < A < 2075mm 36,5mm for 2175 < A < 2975mm (**) 150mm for 570 < A < 2075mm 160mm for 2175 < A < 2975mm (***) 125mm for 570 < A < 2075mm 135mm for 2175 < A < 2975mm

29 Fisair Air humidity control 29 A Connection to the water supply WATER SUPPLY Connect the water supply (A) to the ½ male BSP (6) using suitable piping with a cut-off valve (1). We recommend the installation of a 0,5 mm filter light (2). In the HEF2 Series-DW, when the temperature of the feed water is below the dew point of the downstream air flow after the wetting panel, FISAIR recommends to isolate the stainless steel manifold and pipes to prevent possible condensations. To work according to hygienic certificate VDI6022 (ISO846) the isolations should also meet that standards Fitted by others 6 2 1

30 HEF2 Series Installation and maintenance manual 30 B Connecting the drain to the water trap DRAINING CONNECTIONS Connect the ø32 mm common outlet (female/glued PVC-U) for the draining / overflow / constant bleed-off (3), with no cut-off valve, to the network. The connection of the water outlet to the drainage must include a water trap (5) high enough (2H) to exceed the pressure in the system, so the water tank can be completely emptied, for hygiene reasons. The system will also have the normal slope of typical drainage lines. Recovering water from the humidification process into the drinking water mains is absolutely prohibited. 2H Water trap for positive pressures Fitted by others Hmin. (mm)= P(Pa)/10 P= Total fan pressure 2H H H Water trap for negative pressure B 5 2H 3 PVC-U ø32 mm (glued) E Setting of the irrigation valves in each evaporative cassette Adjust the irrigation valves of the evaporative cassettes so their surfaces are uniformly wet. The empirical value of approximately 0,4 litre/second for each square metre of irrigation surface is enough to exceed the water needed for evaporation. Generally, it is just necessary to ensure the irrigation of the panels has excess water falling into the water tank. Regulating with a flat head screwdriver where shown Excess irrigation water is important to ensure constant and superficial washing of the panels. Example of irrigation x cassette: Cassette width (500mm) and panel thickness (150mm) Regulation valve + ½ brass flow meter for adjusting the irrigation of each cassette 0,5 x 0,15 x 24= 1,8 L/min [Note] The flow in L/min for each cassette can be found on the HEF2 Series selection sheet.

31 Fisair Air humidity control 31 CONNECTIONS AND SETTINGS/REGULATIONS MADE (OPTIONAL ACCESSORIES FOR RECIRCULATED WATER) A Connection of the water tank filling solenoid valve. This solenoid valve is supplied loose for installation by others B Connection of the zone motor-valve for automatic draining. This motor valve is supplied assembled C Flexible connector for the water supply D External rigid connector for the water supply E External rigid connector for draining F UV light disinfection system G Perimeter closure cover plates H Solenoid valve(s) connection for stage control I Basic control panel with conductivity control CCB + C (*) H E B C D A J K L HEF2 series for duct Piping system in stainless steel Basic Control Panel CCB (*) M Stage control panel CCE (*) P Stage control panel with control by conductivity CCE + C (*) (*) Go to the corresponding control panel manual. A H B C D G E

32 HEF2 Series Installation and maintenance manual 32 CONNECTIONS AND SETTINGS/REGULATIONS MADE (OPTIONAL ACCESSORIES FOR DIRECT WATER) A Connection of the water basin filling solenoid valve. This solenoid valve is supplied loose for installation by others C Flexible connector for the water supply D External rigid connector for the water supply E External rigid connector for draining F UV light disinfection system G Perimeter closure cover plates H Solenoid valve(s) connection for stage control J HEF2 series-dw for duct K Piping system in stainless steel N Connection of the 3-way motor-zone valve to manage the water feed and emptying of the manifold/irrigation system H O E A N O Motor-zone valve for emptying the manifold/ irrigation system A H N C D G E

33 Fisair Air humidity control 33 A Connection of the 24V or 230V water basin filling N.C. solenoid valve (supplied loose for installation by others) (*) In the case of HEF2 series of recirculated water, the maximum level must manage this solenoid valve. It is used as a security system in the event of a possible failure of the float valve. It must not be used for regulating the water feed. The float valve is responsible for the regulation. 44 G ½ brass water filling N.C. solenoid valve 101,5 72 ½ G 40 24V connector (L1+N+T) 230V connector (L1+N+T) L1/N L1/N 230V or 24V coil (50/60 Hz) (*) In the HEF2 series of recirculated water this solenoid valve must always be installed upstream of the float valve. In the HEF2 series-dw (Direct Water), this solenoid valve manages the water feed of the irrigation system (it will be supplied assembled on the unit). Eliminates the standard 1/2 ball valve and makes it impossible for the 3-way motor-zone valve to be assembled.

34 HEF2 Series Installation and maintenance manual 34 B Connection of the N.C. motor-zone valve for automatic draining of the HEF2 series (recirculated water) CASE 1: HEF2 series (recirculated water) with the filling solenoid valve and without CCB (basic control panel). This case will assemble the type I motor-zone valve. Figure 1: Type I motor-zone valve CASE 2: HEF2 series (recirculated water) with the filling solenoid valve and with a CCB (basic control panel). This case will assemble the type II motor-zone valve. CASE 3: HEF2 Series (recirculated water) without the filling solenoid valve and without CCB (basic control panel). This case will assemble the type II motor-zone valve. type I motor-zone valve (3 points control) Technical data AC 24 V supply (SELV/PELV) AC 230 V supply Function data Operating voltage / Frequency Power consumption Operating voltage / Frequency Power consumption Nominal torque Runtime for 90 rotary angle Contact rating AC 24 V ± 20% / 50/60 Hz 2 VA / 1W AC 230 V ± 10 % / 50/60 Hz 2 VA / 1 W 5 Nm 125 s 6 A resistive, 2 A inductive Auxiliary switches Voltage (no mixed operation AC 24 V / AC 230 V) AC V Switching range for auxiliary switches Setting increments 5 Connection cables Cross-section Standard length 0,75 mm2 0,9 m Degree of protection of housing Degree of protection as per EN IP 54 Insulation class EN Protection class AC 24 V, feedback potentiometer AC 230 V, auxiliary switch lll ll Operation / Transport IEC / IEC Environmental conditions Temperature C / C Humidity (non-condensing) < 95% r. F. / < 95% r. F. Weight 0,48 Kg.

35 Fisair Air humidity control 35 Electric Diagram connections GDB13..1 / GLB13..1 GDB13..1 / GLB points control AC 24 V 3 points control AC 230 V Dimensions

36 HEF2 Series Installation and maintenance manual 36 Adjusting: A, B Auxiliary contacts Factory setting A= 5º B= 85º Cable labeling Pin Cable Code Nr. Color Abbrev. Meaning G 1 red RD System potential AC 24 V Actuators AC 24 V Y1 6 purple VT Position signal AC 0 V, clockwise Y2 7 orange OG Position signal AC 0 V, counter-clockwise N 4 blue BU Neutral conductor Actuators AC 230 V Y1 6 black BK Control signal AC 230 V, clockwise Y2 7 white WH Control signal AC 230 V, counter-clockwise Q11 S1 grey/red GY RD Switch A Input Q12 S2 grey/blue GY BU Switch A Normally closed contact Auxiliary switch Q14 S3 grey/pink GY PK Switch A Normally open contact Q21 S4 black/red BK RD Switch B Input Q22 S5 black /blue BK BU Switch B Normally closed contact Q24 S6 black /pink BK PK Switch B Normally open contact

37 Fisair Air humidity control 37 In case 2, when this motor-zone valve is connected to the CCB (Basic Control Panel), it will be necessary to connect the S4 cables (Black/Red) and S6 ones (Black/Pink) to the Feedback connection J15 (See page 13 of the basic control panel CCB manual) type II motor-zone valve (2 points control) Datos técnicos AC 24 V DC V supply (SELV/PELV) Operating voltage AC / Frequency AC 24 V ± 20 % / 50/60 Hz Operating voltage (DC) DC V ±20 % Power consumption AC: 5 VA / 3.5 W // DC: 3.5 W AC 230 V supply Function data Auxiliary switch Operating voltage / Frequency Power consumption Nominal torque Runtime for rotary angle 90 (motor operation) Closing time with return spring (on power failure) AC power supply Switching voltage Nominal current res./ind. DC power supply Switching voltage Nominal current AC 230 V ± 10 % / 50/ 60 Hz 7 VA / 4.5 W 7 Nm 90 s 15 s AC V 6 A / 2 A DC V DC 2 A Switching range for auxiliary switches / Setting increments / 5 Connection cables Cross-section Standard length 0,75 mm2 0,9 m Degree of protection of housing Degree of protection as per EN IP 54 Insulation class EN Protection class AC/DC 24 V, feedback potentiometer AC 230 V, auxiliary switch lll ll Environmental conditions Weight Operation / Transport IEC / IEC Temperature C / C Humidity (non-condensing) < 95% r. h. / < 95% r. h. 1.2 kg.

38 HEF2 Series Installation and maintenance manual 38 Electric Diagram connections GMA12..1 / GMA points control AC 24 V 2 points control AC 230 V Dimensions

39 Fisair Air humidity control 39 Manual positioning Position Block Unblock Adjusting: A, B Auxiliary contacts Factory setting A= 5º B= 85º Cable labeling Pin Cable Code No. Color Abbrev. Meaning Actuators AC 24 V DC V Actuators AC 230 V G 1 red RD System potential AC 24 V/DC V G0 2 black BK System neutral L 3 brown BN Phase AC 230 V N 4 blue BU Neutral conductor Q11 S1 grey/red GY RD Switch A input Q12 S2 grey/blue GY BU Switch A normally-closed contact Auxiliary switch Q14 S3 grey/pink GY PK Switch A normally-open contact Q21 S4 black/red BK RD Switch B input Q22 S5 black/blue BK BU Switch B normally-closed contact Q24 S6 black/pink BK PK Switch B normally-open contact

40 HEF2 Series Installation and maintenance manual 40 C Flexible connector for the water supply 542 mm Teflon seal ½ conical BSP Flexible filling pipe made of ½ AISI304 stainless steel. Length 542 mm ½ conical BSP [Note] It will be delivered unassembled, it must be connected to the inlet of the float valve in the case of recirculated water. In the case of direct water it will be connected to the input 1/2 BSP-M. A ½ 3/8 reduction is supplied when the float valve is 3/8. D E External rigid connector for the water supply External rigid connector for draining X (defined by the client) D Rigid ½ ASI304 steel filling pipe. (It will be supplied disassembled) E Male/glued ø32 PVC draining pipe. (It will be supplied disassembled)

41 Fisair Air humidity control 41 F U.V. lamp disinfection system (*) Figure 1 DNA molecule damage caused by U.V. light ULTRAVIOLET LAMP Concerns related to pathogenic organisms in the water causing illnesses and contaminating industrial processes, have led FISAIR S.L. to provide the optional integration of ultraviolet technology in its evaporative units. This type of system eliminates bacteria, viruses and other pathogens, prevents their reproduction, and results in completely safe drinking water. U.V. radiation is one band of the electromagnetic spectrum. It has more energy than visible light. The irradiation of germs present in the water with U.V. light harms their DNA molecules (figure 1) in a number of ways, which prevents cell division and kills them. The most harmful radiation for germs has a wavelength of 254 nanometres. The DNA exposed to this energy can only absorb up to a maximum, after which there is an irreparable inactivation of the growth of the pathogens. Figure 2 Control panel The only control panel that includes it as standard, is the panel in which the U.V. lamp is integrated (figure 2). ULTRAVIOLET LIGHT DISINFECTION SYSTEM + WATER FILTERS BSP ½ connector Cut-off valve U.V. light Control valve UNTREATED WATER A A Solenoid valve (*) BSP ½ connector Control valve Treated water to the HEF2 series water supply 50μ water filters 5μ water filters Cut-off valve A A Warning!!! To avoid unnecessary blockages in the filters of the system, the water should be made to circulate through the by-pass when the appropriate settings are being made to the irrigation of the cassettes and the cellular panel is being washed during installation. A M8 attachment points (*) This valve is the optional water supply valve.

42 HEF2 Series Installation and maintenance manual 42 G Perimeter closure cover plates a Unassembled cover plates b Assembled cover plates c Anchor points c c a b c c

43 Fisair Air humidity control 43 H Solenoid valve(s) connection for stage control 3 rd stage solenoid valve 2 nd stage solenoid valve 1 st stage without solenoid valve (managed by the on / off switch of the pump) CASE 1: (figure 1) HEF2 series (recirculated water) Each stage manages the irrigation of 1 cassette. The first stage is managed with the ON / OFF switch of the pump The following stages (from 2 to 5) will be managed by a solenoid valve located after the regulating flow irrigation valve. (*) Figure 1: HEF2 series (recirculated water) with 3 stages 3 rd stage solenoid valve 2 nd stage solenoid valve 1 st stage solenoid valve CASE 2: (figure 2) HEF2 series-dw (direct water) Each stage manages the irrigation of 1 cassette For each stage there will be a solenoid valve located after the regulating flow irrigation valve. (*) 5 stages as Maximum to manage the biggest HEF2 with 5 cassettes Figure 2: HEF2 series-dw (direct water) with 3 stages. (*) To connect the valves refer to page 35. point A.

44 HEF2 Series Installation and maintenance manual 44 J HEF2 series-dw for duct HEF2 series FOR DUCT (RECIRCULATED WATER) Main Levels + Water supply and basin draining connections A = Width HEF2 Series ø Higth HEF2 Series Process air Water supply 1/2 bsp-m (1) & (3) Inlet types Water outlet to drain Pvc-u d32-f (type L outlet) Process air (**) (*) 26,5 Water supply 1/2 bsp-m (3) Inlet types Water supply 1/2 bsp-m (1) Inlet types Water outlet to drain Pvc-u d32-f (type R outlet) Water outlet to drain Pvc-u d32-f (type L outlet) (*) 26,5mm for 570 < A < 2075mm 36,5mm for 2175 < A < 2975mm (**) 150mm for 570 < A < 2075mm 160mm for 2175 < A < 2975mm

45 Fisair Air humidity control 45 HEF2 series-dw FOR DUCT (DIRECT WATER) Main Levels + Water supply and basin draining connections A = Width HEF2 Series ø Higth HEF2 Series Process air Water supply 1/2 bsp-m (1) & (3) Inlet types 125 Water outlet to drain Pvc-u d32-f (type L outlet) Process air (*) 26,5 (**) 192 Water supply 1/2 bsp-m (3) Inlet types Water supply 1/2 bsp-m (1) Inlet types Water outlet to drain Pvc-u d32-f (type R outlet) Water outlet to drain Pvc-u d32-f (type L outlet) (*) 26,5mm for 570 < A < 2075mm 36,5mm for 2175 < A < 2975mm (**) 192mm for 570 < A < 2075mm 202mm for 2175 < A < 2975mm

46 HEF2 Series Installation and maintenance manual 46 K Piping system in stainless steel All pipes, elbows, tees, etc., in stainless steel except the draining/overflow panoply which continues in PVC-U. All the valves remain in brass or bronze. When designed to work at high temperatures (painting cabins, ovens, heating coils...), the draining/overflow panoply will be in stainless steel. Consult FISAIR for more information. N Connection of the 3-way motor-zone valve to manage the water supply and the emptying of the manifold/irrigation system (figure 1) To manage the water supply and the emptying of the manifold/irrigation system of the HEF2 Series-DW (direct water) the type II motor-zone valve is assembled (page 39). The actuator will be the same as the two way valve. Type II motor-zone valve (3 ways) Figure 1 ASSEMBLIES WATER FLOW DIRECTION WATER SUPPLY FLOW DIRECTION DRAINING MANIFOLD FLOW DIRECTION Water supply Water flow to manifold/irrigation system Water flow to basin Water flow from manifold/irrigation system O Motor-zone valve for emptying of the manifold/irrigation system (figure 2) To manage the emptying of the manifold/irrigation system of the HEF2 Series-DW (direct water) the type I motor-zone valve is assembled (page 36). Type I motor-zone valve (2 way) Figure 2

47 Fisair Air humidity control 47 Installation and recommendations GENERALITIES FISAIR HEF2 Series evaporative humidifiers essentially work by means of the irrigation of the evaporative panels. Humidifiers execute their function whenever air currents pass through them and the water pump irrigates the panels. Note: To remove superficial inorganic material/dust on the panels and to prevent its transmission to working areas, we recommend leaving the water irrigation pump on for 6 hours, with no air flow, in order to wash the panels. Subsequently, the washing water must be emptied before starting up the unit as per normal. To ensure the correct operation, according to the hygienic standard VDI6022, maintenance should be performed regularly as directed, and it is also necessary to keep a maintenance record. HEF2 Series WITH EXTERIOR AIR OR INSTALLED IN AN AHU OUTDOORS All units using the HEF2 Series with exterior air must stop the pump and drain the water tank in the event of preheater faults. Units for adiabatic cooling of the return air must drain the water tank water during the winter. OPERATIONAL PERFORMANCE CONTROL Humidifiers work with excess panel irrigation. If evaporative performance is to be regulated, this is not done by controlling the quantity of irrigation water but rather: Regulating the number of cassettes in operation. The FISAIR HEF2 can be equipped with the components necessary for external control or may also include FISAIR stage control panel CCE. Alternatively, by controlling irrigation operation times, so the humidity/temperature regulator acts on the pump working time. Maintenance GENERALITIES Humidifier components are very easy to maintain, because the only active parts are the irrigation pump and the float valve. The following elements require some kind of maintenance: Once a month, the irrigation pump: The most important thing is to monitor to ensure dirt does not obstruct the suction impulsion circuit and electricity consumption is lower than the power rating shown on its plate. Once a year, the float valve: This must be inspected on a regular basis to ensure its mechanical closure and opening works correctly. Once a year, the control valves: These must be inspected to ensure their mechanical regulatory function works correctly. Once a year, the solenoid valves (if applicable): These must be inspected to ensure their mechanical closure and opening works correctly. Once every three months, the evaporative panels: Their operating life basically depends on the correct use of the constant bleed-off system for mineral salts which prevents the formation of superficial lime deposits, from the supply of drinking or industrial water. If they are not maintained properly, the panels have to be replaced more often, because the flow of air through them can be blocked by these deposits. Once a year, the irrigation: Take the steps described on the page entitled Cleaning the individual irrigation system. In the interests of correct maintenance, it is advisable to make regular observations on the days after installing the system, to understand the specific behaviour of the installation, so the draining and cleaning programmes can be set. Similarly, during long periods of inactivity (summer for humidification for comfort, and winter for evaporative refrigeration) it is essential to completely drain and clean the water tank.

48 HEF2 Series Installation and maintenance manual 48 Cleaning and disinfection Evaporative humidification: A natural method that does not carry bacteria. The operational features of evaporative humidifiers are based on the natural effect of the water evaporation when an air flow goes through/by a wet surface (is the same natural principle that occurs when water evaporates from waterfalls, rivers, lakes, seas...). Evaporation means that the water leaves the humidifier as pure vapour (gas). Minerals and eventual pollutants stay in the water and can be eventually drained / eliminated. With no droplets or aerosols carry over, the bacteria can t be transferred to the humidified air. It is important to use a droplet separator when its needed. The evaporative humidifiers work with water temperatures below 24 C, very far from the optimal growth temperatures of the bacteria present in the water, essentially Legionella pneumophila, with an optimum growth temperature of 37-41ºC. The water basin, manifold, irrigation system and the other components of the HEF2 series are specially designed for there to be complete emptying by gravity, without the aid of mechanical elements. Based on the quality of treated air and water supply, a cleaning and emptying inspection plan should be established. Evaporative humidifiers must be cleaned regularly to prevent contamination. All surfaces of the components (panel, pipes and especially the water basin) should be disinfected with an appropriate solution. In the case of the use of disinfectants with chlorine, it is imperative to consider the formation of toxic chlorine gas when combined with an acid solution. egarding disinfection of other components, the same bleach solution may be valid. The number and frequencies of the cleaning /disinfection process must be established by the installation responsible in function of the installation requirements, unit working time, water quality, air quality, etc. To insist once more, the optimal performance is principally based on a correct irrigation regulation, a correct bleed-off regulation and a correct emtying regulation. An additional and very good practice would be to add a water supply treatment. Hygienic conformity test. The HEF2E humidifiers have the hygienic conformity test certificate. Complying with the requirements of the following standards: For air conditioning: VDI 6022, part 1 (07/2011) SWKI VA (04/2006) VDI 3803, part 2 (02/2010) For hospitals: DIN , (12/2008) All the materials included in the HEF2E have obtained a negative result in the proliferation of pathogenic microorganisms. The non-metallic components comply with the requirements of standard DIN EN 846 Plastics. Assessment of the action of microorganisms You must pay special attention to cleaning the piping system, especially in bends and junctions; the cleaning process must reach all ends of the system. In the case of the panels, the use of chemical disinfectants for daily maintenance is not recommended because it could reduce the efficiency of the panel and its useful life. If the use of chemicals is necessary, either for a long period of inactivity or any other reason, an effective method is to dip the panels in chlorine disinfectant such as sodium hypochlorite (bleach) or sodium percarbonate.

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50 HEF2 Series Installation and maintenance manual 50 LATERAL Disassembly DISASSEMBLY OF CASSETTES AND DROPLET SEPARATORS. LATERALLY The unit can be disassembled in a few simple steps for maintenance and/or cleaning work of the HEF2 Series. Disassembly steps: 1 st Disassemble the collector + regulation valve set for the irrigation flow of the evaporative cassettes. a b Unscrew each irrigation union Unscrew the unions c Collector + regulation valve set of the irrigation flow

51 Fisair Air humidity control 51 2 nd Disassemble the D25 PVC-U up-pipe to the collector. a b D25 PVC-U pipe Unscrew the DN20 PVC-U ball valve fitting 3 rd Disassemble front cover a Unscrew the two screws holding the piece in place b Front cover

52 HEF2 Series Installation and maintenance manual 52 4º Disassemble the side cover a Unscrew (upper screw) without removing the screw from its bolt b Unscrew (lateral screw) c Unscrew (lower screw)

53 Fisair Air humidity control 53 5º Removal of the droplet separators. 6º Disassemble the C piece (there is one piece for each evaporative cassette) side view a front view Unscrew b Release the pipe from the nylon clip c

54 HEF2 Series Installation and maintenance manual 54 7º Removal of evaporative cassettes a Remove the cassettes

55 Fisair Air humidity control 55 FRONT Disassembly UNIT DISASSEMBLY. FRONT The unit can be disassembled in easy steps for maintenance and/or cleaning work of the HEF2 Series. Disassembly steps 1 st LATERAL disassembly step 1 2 nd LATERAL disassembly step 2 3 rd LATERAL disassembly step 3 4º Bleed-off disassembly a Unscrew the brass fitting of the regulation valve + flow meter of the bleed-off b Unscrew the ½ PVC-U union c Bleed-off 5º Disassemble the support + pump + level detector set (optionally the float valve can be mounted on this support) a Unscrew the support b If the float valve is mounted on the support, disconnect the water supply

56 HEF2 Series Installation and maintenance manual 56 6º Removal of droplet separators 7º LATERAL disassembly step 6 8º Disassembly of the b piece a Unscrew the four screws (2 on each side) b 9º Removal of the evaporative cassettes

57 Fisair Air humidity control 57 Cleaning the individual irrigation system 1º Remove the individual top piece mounted on each evaporative cassette a Evaporative cassette b Press with both hands on one of the flaps, as shown in the image. c Remove the individual irrigation top piece d Individual top piece

58 HEF2 Series Installation and maintenance manual 58 2º Clean the perforated pipe of the individual irrigation top piece a Use the special brush supplied with each HEF2 Series b Brush the perforated pipe as shown in the image [Note] We recommend 10 strokes swivelling 180º each time. CLEANING THE INDIVIDUAL IRRIGATION SYSTEM OF THE WATER TANK a The out-of-reach zones of the water tank simply by hand. Use the special brush supplied with each unit

59 List of spare parts Installation and maintenance manual HEF2 Series

60 17 HEF2 Series Installation and maintenance manual 9a, 9b, 9c, 9d a, 5b, 5c, 5d 6a, 6b 2a, 2b, 2c, 2d, 2e 4a, 4b a, 3b List of spare parts 10 2a, 2b, 2c, 2d, 2e 15 1a, 1b 12 ó 8a, 8b and/or 18

61 Fisair Air humidity control 61 List of spare parts Item Code Component Regulation Valve Collector Up-Pipe 1a PE-EPDM ball valve / 25 / Glue 1b PE-EPDM ball valve / 20 / Glue Regulation Valve Showing Cassette and Bleed-off Flow 2a Regulation Valve Showing Flow DN I/m 2b Regulation Valve Showing Flow DN I/m 2c Regulation Valve Showing Flow DN I/m 2d Regulation Valve Showing Flow DN I/m 2e Regulation Valve Showing Flow DN I/m Draining Set, Overflow to Drain 3a Left 3b Right Bleed-off set 4a Left 4b Right

62 HEF2 Series Installation and maintenance manual 62 List of spare parts Item Code Component Water Recirculation Pump 5a Water Pump 50 W. 230V./I/50Hz. 5b Water Pump 60 W V./III/50Hz. 5c Water Pump 120 W V./III/50Hz. 5d Water Pump 240 W V./III/50Hz. Water Supply Float Valve 6a AISI 304 Stainless Steel Float Valve 3/8 6b AISI 304 Stainless Steel Float Valve ½ Draining Cut-off Valve ¾ F-F Chrome Brass Ball Valve Lever 8a Way Zone Motor Valve DN20 (¾ ) F-F Threaded 230V 8b Way Zone Motor Valve DN20 (¾ ) F-F Threaded 24V

63 Fisair Air humidity control 63 List of spare parts Item Code Component Cassette Irrigation Set 9a For 300 mm Cassette 9b For 400 mm Cassette 9c For 500 mm Cassette 9d For 600 mm Cassette Cassette Irrigation Supply Set Cassette Irrigation Pipe Collector Pump-Bleed Off-Up Pipe Set Max/Min Level Detector Max/Min Level Detector

64 HEF2 Series Installation and maintenance manual 64 List of spare parts Item Code Component Irrigation Individual Distribution Nylon Clip D20 mm Nylon Clip Stainless Steel Collector 15 1 st ) Provide HEF2 Series Serial Nº Droplet Separators 1 st ) Measure A in the droplet separator being replaced 16 A 2 nd ) Provide the HEF2 Series Serial Nº Evaporative Cassettes 1 st ) Measure B in the evaporative cassette being replaced 17 B 2 nd ) Give the HEF2 Series Serial Nº Solenoid valve 18a Solenoid valve 24V 18b Solenoid valve 230V

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