EUQA Humidifier, for circulated water

Transcription

1 Sizes 0 4, 50, 5 Sizes 44, Control box, on the outside. Control box, on the inside. Shut-off valve (not included) 4. Water filter, max. 500 mm mesh (not included) 5. EUAZ-08 Water trap (accessory) 6. Water supply pipe 7. Humidifier fill 8. Droplet eliminator 9. Spray pipe 0. Pump. Flow controller. Valve with motor actuator. Overflow hose 4. Water level sensor 5. Solenoid valve 6. Flushing hose 7. End plug 8. Side wall Fig. To connect the humidifier to the water system The water supply to a humidifier is controlled by a builtin solenoid valve. Connect the supply pipe to the inlet branch. Fit a shut-off valve, item. Table. Connections Nominal pipe sizes Nominal pipe size/diameter Size Water supply pipe Drain connection 0 4, 50, 5 No. 5, / BSP No., /4 BSP female thread 44, 5-84 No. 0, /4 BSP No. dia. conn. male thread To avoid clogging, fit a water filter, item 4 (with a max. mesh of 500 µm), between the shut-off valve and the humidifier. Connect the drain pipe, item 6, to the humidifier drain connection. This should be fitted with a cleanable water trap, item 5, and should be run, without reduction in diameter, to a floor gulley. For size 44, 5 84 humidifiers, two water traps should be used in parallel. The shut-off valve, water trap and water filter are not included in the supply. Connection to the power supply Number of pumps Pump: Pump: EUQA Size/ Output, 0, kw Output, 0,8 kw Degree if humidi- Power supply: Power supply: fication x 0 /400 V x 0/400 V Current, 0,7/0,4 A Current: 0,86/0,50 A 0 4, 50, 5 60% 90% 44, 5, 5, 60 60% 90% 6, 7, 80 60% 6, 7, 80 90% 64, 7 60% 90% 8, 84 60% 8, 84 90% Wiring diagram for the control box on outside Power supply x 400 V + N + Pa 50 Hz 0 A L L L PE N HB T T T (to be carried out by an authorized electrician) When making the connections on site, run the power supply cable, item, to the control box through the cable gland fitted to the casing. External fuse: at least 4 A. The electrical components inside the control box are protected by a A fuse. The pump is delivered always connected for x 400 V. The pump motor has degree of protection S (IP 44) and has class B insulation. Interlock from SF Moisture control PE 4 PE Fläkt Woods 4 GB Specifications are subject to alteration without notice

2 Maintenance adjustments Water: Determine the calcium and bicarbonate content and the ph value of the water. These values can be obtained from a water analysis or from the local water authority. Plot the values of bicarbonate, calcium and ph in chart on page 5 to determine in which zone the water can be classified. If the water is of zone 4 type, it should be softened. Level monitors fig. Level monitor A: Closes the water supply valve when the water reaches max. level A. Setting A: 5 mm from the upper edge of the water tray (sizes 0 5) 65 mm from the upper edge of the water tray (sizes 60 84). Level monitor B: Opens the drain valve for water bleed-off. Setting B: The zone value obtained (see page 5) determines at which setting level monitor B (Fig. ) is to be preset. Set the marking on the monitor in relation to the zone scale. Level monitor C: Stops the circulation pump and opens the water supply valve if the water level drops below level C. Setting C: 0 mm from the bottom of the water tray (sizes 0 ) 5 mm from the bottom of the water tray (sizes 40 84) Level relays: NR, NR and NR are shown in Fig. 7. The level relays are preset at a sensibility of 40 kω. If softened water is used and the level monitors don't work, the sensibility setting can be increased to 00 kω. Maintenance adjustments (contd.) that water bleed-off can be done by manually opening the drain valve approx. half way (45 ), see Fig.. The valve can be reclosed by pressing a reset button on the control unit. When the water level has dropped below the lowest point of sensor B, the drain valve should open fully. If the water level continues to drop below the lowest point of sensor C, water inlet valve should begin to open and after a preset period (see Table, Fig. 6) the drain valve should start to close. When the water reaches level C, the pump should soon stop. (The pump should not run when the water level is below level C.) The preset period on the time relay should be according to Table, 4 and Fig. 6. Droplet eliminator The droplet eliminator fills must be correctly fitted for the direction of air flow, see the arrow on the droplet eliminator. Fig. Level monitors A B C Z ON Zon Zone Scale Level monitor B: adjustable Adjusting screw The humidifer function: switch on the power supply to the humidifier. The water tray will start to fill with water. Check: that the pump has started and that it is pumping water. If there is no water flow, change the direction of rotation of the pump, see Fig. 5. preset the required supply water flow rate according to Table. This is done by setting the adjustment screw on the flow controller, shown in Fig. 4. that water is being discharged from all of the holes in the spray pipe(s). If any holes are clogged, use a needle to unclog them. If the spray pipe(s) is/are extremely clogged, remove the end plugs (7), brush inside them using a round brush and then flush them clean. that the flow of supply water stops when the water level in the tray reaches level monitor A. Fig. Fig Adjusting screw Reading point Fig. 5 Fläkt Woods 4 GB Specifications are subject to alteration without notice

3 Table. Supply air flow Size Supply water flow, l/min Aluminium 90% 60% ,0 7, Table. Time required for emptying (time relay TR) Time required for emptying Normal operation High humidification Size preset value over a long period x >8 gram x >5 gram 90% 60% 90% 60% Time relay TR has been preset for normal operation. If the time required for emptying has to be increased due to humidification over a long period, this can be done as follows:. Select Function. Select the Range. Select Time If Range has red digits, Time shows tenths of Range If Range has black digits, Time shows thirtieths of Range. Example: Size 64, x>8 gram. Set a time of 40 sec. Select a Range of 00 sec. (black digits) Select a Time of 4 (black digits) A~+ 5 B s.5.5 Range Time M ETR4 69 A Rel Power 6 Fig. 6 TR 8 Function A~- Seconds Range Time 0 s s 0 red 0 0 s 0 black 0 0 s 0 black s 4 red s 5 red s 6 red s 7 red s 8 red s 9 red s 0 red 0 00 s black s 8 black s 4 black s 0 black Q TR NR NR NR K R Fig. 7 Components inside the control box Fläkt Woods 4 GB Specifications are subject to alteration without notice

4 Water bleed-off The water consumption consists of the water evaporated and a certain amount of water bleed-off. This bleed-off flow is necessary to reduce the consumption of salts in the circulating water. If the concentration of salts is too high, salts may be deposited on the humidifier fill, which will have a detrimental effect on the performance and useful life of the humidifier. Chart can be used to determine the appropriate bleed-off flow, to suit the water quality zone and the humidification rate. Level sensor B should be preset to the appropriate zone, correct bleed-off will then be achieved. In order to insure that the water tray is kept clean, it is advisable to drain and flush it every day (preset at the factory at.00.5 hours). If high demands on hygiene are made or if the humidifier runs over a long period at a high humidification rate, x above 8 grams per kg of air (90% humidifier) and x above 5 grams per kg of air (60% humidifier), it is advisable to program an additional daily draining and flushing cycle. To set the timer for emptying and flushing For normal function, the timer should be preset to "ON". When emptying, which can be programmed to occur once or several (optional) times every 4-hour period, the timer will reset itself to the "OFF" setting for 0 minutes. After that, the timer will reset itself to "ON" for minutes to allow flushing. The timer will then reset itself to the "OFF" setting for minutes for additional emptying before resetting itself back to "ON" for normal operation. In the following example, emptying and flushing are required once every 4 hours from.00 to.5 as scheduled below. Period Timer setting Activity ON Normal operation.00.0 OFF Emptying.0. ON Flushing..5 OFF Additional emptying ON Normal operation This can be done most easily by programming the operation times from.5 to.00 and from.0 to. on a daily basis! Emptying and additional emptying will then occur from.00 to.0 and from. to.5 respectively. Fläkt Woods 4 GB Specifications are subject to alteration without notice

5 Timer The timer has been preset at the factory for emptying and flushing as described above once every 4-hour period. The timer has also been preset for the following: Summer and winter time in the country where it is to be used. Date and time in the time zone where it is to be used. Day-by-day summary of the programmed connection times. Example: 5 = Friday Duct status ON = On, OFF = OFF Maintenance voltage OK: Indicated by flashing points between the numbers on the display. Running reserve mode: Indicated by flashing points between the numbers on the display. Choice of function: Ex: Auto, Prog, Pulse, Cycle, Delete 4 Auto MENU OK - + L N Display of special functions: Manual operation Permanent ON/OFF Symbols which indicate summer/winter function: Summer Winter The numbers under the display indicate days of the week = Monday, = Tuesday, etc. Choice Yes means choice of programming. Choice No means continue. Change of current time of day. Press menu times - flashes. Press OK Display shows YEAR, change with + or. Press OK Display shows MONTH, change with + or 4. Press OK and continue for DAY, HOUR, MINUTE, SU/WI (SU = Summer, WI = Winter) For switching ON/OFF. Press menu time - Prog flashes. Press OK. Change to QUESTION with + or 4. Press OK 5. Press OK for next time. And continue to END 6. Press OK To INTERRUPT Press menu N L L Change of ON/OFF. Press menu time - Prog flashes. Press OK Read text in the display! Select with + or Store with OK Manual operation of ON/OFF. Press both + and at the same time. ~ sec gives manual ON/OFF, (returns automatically) ~ sec gives permanent ON/OFF Resetting: Briefly press both + and at the same time. For further particulars, see the separate instructions supplied with the timer. Fläkt Woods 4 GB Specifications are subject to alteration without notice

6 Determining the water quality zone The following particulars are required to be able to determine the water quality zone. the ph of the water the bicarbonate concentration (HCO ), mg/l the calcium concentration (Ca + ), mg/l This data can be obtained from a municipal water authority or by analysing the water Example Data from the municipal water authority: ph = 7,6 Bikarbonate 70 mg/l Calcium 0 mg/l From Chart, the operating point is in zone (safe zone). Chart Calcium Ca + mg/l ph-value Max. ph of aluminium Precipitation zone Transition zone Safe zone ,5 9 9, Bikarbonate HCO mg/l Zone is the safe zone, in which the water is soft or demineralized. Zone is the lower part of the transition zone, in which the water can be said to be of normal drinking quality. Zone is the upper part of the transition zone, in which the water is relatively hard. Zone 4 is the precipitation zone, in which the water is very hard. The water must be subjected to partial softening, so that its quality will be within zone. However, the softening treatment must not lower the quality of the water to zone. Fläkt Woods 4 GB Specifications are subject to alteration without notice