FläktGroup LQQA Humidifier for circulated water Installation and Maintenance Manual

Brand: FläktGroup

Model: LQQA Humidifier for circulated water

Type: Installation and Maintenance Manual

FläktGroup LQQA Humidifier for circulated water has a solenoid valve controlling the water supply, and an overflow hose with a level sensor. It also comes with a water trap and water filter. The indoor humidifier is designed to control humidity in rooms, offices, industrial and public spaces, and greenhouses. It connects to a water supply and uses a motor-operated valve, pumps, and a flow controller to regulate the humidification rate.

FläktGroup DC_9205GB 20180329_R0 Speciﬁcations are subject to alteration without notice

LQQA HUMIDIFIER,

FOR CIRCULATED WATER

INSTALLATION AND MAINTENANCE INSTRUCTIONS

CONNECTION TO THE WATER SYSTEM

The water supply is controlled by a built-in solenoid valve. Connect the

supply pipe to the inlet branch. Fit a shut-off valve, Item 2, in the water

supply pipe.

Table 1. Connection sizes

To avoid clogging, ﬁt a water ﬁlter, Item 3 (with a max. mesh of 500 µm)

between the shut-off valve and the humidiﬁer.

Connect the drain pipe, Item 5, to the humidiﬁer drain connection. The

drain should be ﬁtted with a cleanable water trap, Item 4, and should run,

without reduction in diameter, to a ﬂoor gulley. On size 60-84 units, two

water traps coupled in parallel should be used.

The shut-off valve, water trap and water ﬁlter are not included in the

delivery.

CONNECTION TO THE ELECTRICAL SYSTEM

(To be carried out by an authorized electrician)

When making the connections on site, run the power supply cable to the

control box across an external high voltage switch and through the cable

gland ﬁtted in the casing. The control box is protected by an internal 2A

fuse. The pump(s) supplied is/are always wired for 3 x 400 V. The pump

motors have degree of protection S 33 (IP 44) and class B insulation.

Table 2.

1. Control box, external

2. Shut-off valve (not included)

3. Water ﬁlter, with a max mesh of

500 µm (not included)

4. LQAZ-08 Water trap (accessory)

5. Drain pipe

6. Humidiﬁer ﬁll

7. Droplet eliminator

8. Spray pipes

9. Pump

10. Flow controller

11. Valve with motor actuator

12. Overﬂow hose

13. Level sensor

14. Solenoid valve

15. Flushing hose

16. End plug

17. Spacer plate

Fig. 1

11 12

Size 60–84

Connection number/Diameter

Size Supply connection/ (male threads) Drain connection

60-84 No. 20, R 3/4” 2 drains 32 dia.

LQQA Size Humidiﬁcation

rate

Number of pumps

Output:

0,12 kW

Output:

0,18 kW

Voltage:

3 x 230 /400 V

Current:

0,71/0,41 A

Voltage:

3 x 230 /400 V

Current:

0,86/0,50 A

60 60%-90% - 1

62, 71, 80 60% 1 -

62, 71, 80 90% - 1

64, 73 60%-90% 2 -

82, 84 60% 2 -

82, 84 90% - 2

Installation and maintenance instructions

FläktGroup DC_9205GB 20180329_R0 Specifications are subject to alteration without notice

EUQA 2;1

ITEMS TO CHECK WHEN MAKING ADJUSTMENTS

The water:

Determine the proportion of calcium, bicarbonate and pH-value of the

water. This information can be obtained from a water analysis or from

the local waterworks. Plot the values obtained in Chart 1 on page 4 to

determine in which zone the water can be classiﬁed. If the water is of

zone 4 type, it should be softened.

The humidiﬁer function:

- Switch on the external switch. The water tray starts to ﬁll with water, if

the TF1 input is closed.

Now check:

- that the pump has started and that it is pumping water, (the RH1 input

should be closed).

If there is no water ﬂow, change the direction of rotation of the pump.

See Fig. 3

- preset the required supply water ﬂow rate according to Table 3. This is

done by setting the adjustment screw on the ﬂow controller, Fig. 4.

- that water is being discharged from all 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 (Item 16, Fig.

1), 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 A.

- that the water bleed-off rate is correct. Press and hold down

the –button on RC1 to force the drain valve to open. See Fig. 2!

When the water level has dropped below Level B, the valve will open

completely and ”Emptying” will appear on the display screen. When

the level drops below Level C the water inlet valve should open and

after a preset period the drain valve should start to close.

If the water level continues to drop below level C, the water inlet valve

should open and after a preset period the drain valve should to close.

When the water level reaches Level C, the pump should brieﬂy stop;

then continue operating.

DROPLET ELIMINATOR

Mount the droplet eliminator in the correct direction of airﬂow. See the

arrow on the droplet eliminator.

246

EUQA Pump

Fig. 3

Adjustment screw

Reading point

Fig. 5 Level sensor

Fig. 4

Fig. 2

Table 3. Supply water ﬂow

Size

Supply water ﬂow, l/min

Aluminium

90% 60%

RC1

ESC

11-15

1-9

PE N

T1, Transformator 230VAC/24VDC

RC1, Reglercentral (PLC)

K1-K2, Kontaktor

Q1-Q2, ÷verlastskydd

F1, S‰kring 2A

(55) (08)

YYYY/MM/DD

: 55

2006 / 03 / 07

Ex.

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TID

ZEIT

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TID

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: 55

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08:55

TID

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Bild 7. Inst‰llning av klockan.

INAKTIVITET

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INAKTIVITÄT

T> 240 min

(55)(08)

YYYY/MM/DD

: 55

2006 / 03 / 07

Ex.

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Closed

Open

ESC

–

Installation and maintenance instructions

FläktGroup DC_9205GB 20180329_R0 Specifications are subject to alteration without notice

Table 4. Presetting the dilution period

WATER BLEED-OFF

The water consumption consists of useful evaporation of water and a

necessary water bleed-off ﬂow. This bleed-

off ﬂow is necessary to reduce the concentration of salts in the

circulating water. If the concentration of salts is too high, salts may be

deposited on the humidiﬁer ﬁlls, which will have a detrimental effect on

the performance and useful life of the humidiﬁer.

Chart 1 can be used to determine the appropriate bleed-off ﬂow, by

determining zone for the current water quality. Then set the appropriate

zone in the display and read the correct bleed-off ﬂow.

In order to ensure a good water quality in the water tray, it is advisable to

empty and ﬂush the tray clean once a day (factory-preset to occur from

12.00 to 12.15 hours).

If high demands are made on hygiene or if the humidiﬁcation rate is to be

high on the long term, Δx > 8 gram per kg air (90% humidiﬁer) or. Δx > 5

gram (60% humidiﬁer), we recommend planning an extra daily drainage

and ﬂushing clean. If required, the dilution period can be lengthened. See

Table 4. The value (T) is set on the display.

Size

Time for dilution, seconds

Normal operation

Pre-set value

High humidification

over a long period

b = 1

90%

b = 2

60%

Δx >8 gram

90%

Δx >5 gram

60%

240

120

180

240

120

180

240

300

120

Installation and maintenance instructions

FläktGroup DC_9205GB 20180329_R0 Specifications are subject to alteration without notice

10 10 000

6000

2000

4000

1000

600

400

200

100

567898,5 9,5

42620 40 60 100 1000 10 000

BEFEUCHTER (Diagram)

pH value Max. pH aluminium

Precipitation zone

Transition zone

Safe zone

Calcium Ca2+ mg/l

CHART 1

Bicarbonate HCO3

– mg/l

TO DETERMINE THE WATER QUALITY ZONE

The following information is needed to determine the water quality zone:

• pH-value

• Bicarbonate concentration (HCO3 ), mg/l

• Calcium concentration (Ca2+), mg/l

Information on the water can be obtained from the local waterworks or by

water analysis.

EXAMPLE

Data from the local waterworks:

pH = 7,6

Bicarbonate 70 mg/l

Calcium 30 mg/l

Chart 1 the water is in zone 1 (The safe zone)

Zone 1 is the safe zone, in which the water is soft or demineralised.

Zone 2 is the lower part of the transition zone, in which the water is

normally of normal drinking water quality.

Zone 3 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 partially demineralised so that the result will be a

water quality that corresponds to zone 2-3.

However, the water must not be demineralised to the point that water of

zone 1 quality is obtained.

Besides the risk of lime precipitation, the concentration of chloride (C1)

and copper (Cu) must be considered. The concentration in fresh water

must not exceed 50 mg/l for chloride and 0.02 mg/l for copper.

Installation and maintenance instructions

FläktGroup DC_9205GB 20180329_R0 Specifications are subject to alteration without notice

TO SHUT DOWN THE HUMIDIFIER

A. Isolate the power supply

B. Stop the fans, if they are operating.

CLEANING OR REPLACEMENT OF THE HUMIDIFIER

FILLS AND DROPLET ELIMINATORS

A. Shut down the humidiﬁer.

B. Open the inspection door.

C. Withdraw the spacer plate as shown in Fig. 6.

D. Withdraw the droplet eliminators and humidiﬁer ﬁlls straight out of

the humidiﬁer. See Fig. 6.

Important!

The inner humidiﬁer ﬁlls can be reached if you carefully step on the

edge of the water tray. Avoid walking on the bottom of the water tray,

guide rails or electric cables.

E. The ﬁlls are relatively fragile and therefore should be treated with

great care. Clean by spraying with a jet of clean water, possibly

containing the ULCZ-01 cleaning agent. When replacing the

humidiﬁer ﬁlls, see the appropriate instructions supplied with the

new ﬁlls.

F. Reﬁt the components in the reverse order.

G. Check the position of the spacer plate and close the door.

TO CLEAN THE WATER TRAY

A. Shut down the humidiﬁer.

B. Withdraw the humidiﬁer ﬁlls and the droplet eliminators.

C. Open the drain valve manually to drain the water tray.

Important!

Do not walk on the bottom of the water tray, guide rails or electric

cables.

D. The water tray is now exposed and can easily be cleaned with the

ﬂushing hose supplied.

E. Reﬁt the components in the reverse order.

F. Check the position of the spacer plate and close the door.

Fig. 6

INTERRUPTED OPERATION

The control unit of the humidiﬁer switches over to the emptying mode as

soon as the fan is shut down.

Drain and clean the water tray whenever the system is shut down for an

extended period, such as during the annual holiday and long weekends.

If the humidiﬁer is to be out of service for some time, the humidiﬁer ﬁlls

should be removed from the humidiﬁer, cleaned and stored in a place

where they will not sustain damage.

SERVICE INTERVALS

Component Service work Interval,

months

Casing (water

tray, ends, top,

guide rails)

Drain the water tray. Clean the interior

by flushing, wiping or brushing, if

necessary.

Humidifier fills

Droplet eliminator

Clean by flushing with water, possibly

with ULCZ-01 cleaning agent, agent,

particularly if the humidification

performance has deteriorated.

Water filter

Clean or replace the filter cartridge,

if necessary. (The mesh must not

exceed 500 µm.)

Level sensor Check the water sensor and adjust

as necessary. 3

Water flow Clean the spray pipes as necessary. 3

Water trap Clean and refill. 6

Water quality See ”Measures when making

adjustments”. 12

Installation and maintenance instructions

FläktGroup DC_9205GB 20180329_R0 Specifications are subject to alteration without notice

The arrow right key is used for navigating between

the 7 images on the screen showing running

information and other settings. See below.

If the arrow left key is held depressed, this will force

the drain valve to open.

(For performance testing)

All the arrow keys are used for moving the ﬂashing

cursor between the various ﬁelds on the screen.

The plus and minus keys are used for:

- increasing and decreasing a ﬂashing value

- selecting between On and Off.

The ESC key is used for :

- advancing one step upward in the menu tree

- removing a ﬂashing cursor

- resetting alarms/alarm outputs

The OK key is used for:

- conﬁrming a selection

INFORMATION IMAGES

1. In-operation information in Swedish.

2. In-operation information in English.

3. In-operation information in German.

4. For setting the water quality zone and time delay T for the dilution of

fresh water.

5. For setting the cleaning period for cleaning the humidiﬁer ﬁlls and

water tray. (1-2 x 15 min. / day)

6. For reading the factory preset values for each water level A, B1, B2, B3

and C, and the sensor’s scaling factor F and pump function CP.

7. For setting the time.

IMAGE 1. IN-OPERATION INFORMATION IN SWEDISH

Line 1 shows: NOT RUNNING, RUNNING, HUMIDIFYING

Line 2 shows: DRAINING, DILUTION, FILLING, CLEANING

Line 3 shows: ALARM CP1-Q1, ALARM CP2-Q2, ALARM SENSOR,

ALARM LEVEL,

Line 4 shows: WATER 45 mm

IMAGE 2. IN-OPERATION INFORMATION IN ENGLISH

IMAGE 3. IN-OPERATION INFORMATION IN GERMAN

CONTROL EQUIPMENT

The control box is located on the exterior of the functional section.

The components inside the humidiﬁer, such as the ultrasound sensor,

solenoid valve, actuator and circulation pumps

1-2 are wired to the junction box.

ULTRASOUND SENSOR

The ultrasound sensor has a 0-10V analogue output which enables water

level readings in the display with an accuracy of a few millimetres.

MONITOR AND KEYPADS

THE MONITOR

The monitor screen displays 4 lines with 12 characters on each line.

THE KEYPADS

ESC

–

ESC

–

ESC

–

ESC

–

ESC

–

ESC

–

ESC

–

ESC

–

ESC

–

ESC

–

- - RN - - -

FI LLI NG UP

ALARM CP1

WA TER 45mm

FI LLI NG

I NG

ALARM CP1

WA TER 45mm

- Q 1

- - RN - - -

FI LLI NG UP

ALARM CP1

WA TER 45mm

FI LLI NG

I NG

ALARM CP1

WA TER 45mm

- Q 1

BETRI EB- AN

NACHFÜLLUNG

ALARM CP1

WA SSER 45mm

- Q 1

ESC

–

Installation and maintenance instructions

FläktGroup DC_9205GB 20180329_R0 Specifications are subject to alteration without notice

IMAGE 4. TO SELECT THE WATER QUALITY ZONE AND TIME DELAY.

Do the following to change zone.

Press the arrow down key so that number 2 ﬂashes. Press the + or - key

to change to the zone required: 1, 2 or 3. Then press OK.

If a value lower than 1 is selected, zone 1 will still apply.

If a value higher than 3 is selected, zone 3 will still apply.

Press OK to return to Image 5.

Example: To set the stop time, 18:45 Off.

Press the arrow down key 4 times so that the 00:00 ﬁeld ﬂashes. Press

OK.

A stop time program will now be shown.

Press the arrow down key 2 times to the last line and there it reads 00:00

OFF.

The ﬁrst ﬁeld is ﬂashing. Enter 18 (h).

Select the next ﬁeld. Enter 45 (min).

Select the next ﬁeld. Enter the OFF function

The last line now reads: 18:45 OFF.

Press OK to return to Image 5.

Do the following to change the time delay.

Press the arrow down key 2 times to make the value ﬂash. Press the + or

- key to change to the value required. Then press OK.

The humidiﬁer should be drained and ﬂushed for 15 min 1-2 times/day.

The period: 12:00 -12:15 has been preset (can of course be altered, if

needed).

A second cleaning period is available. On delivery, it is preset to 00:00 -

00:00.

If desired, you can set it to 18:30 -18:45; just remember to set the start

time as ON and the stop time as OFF on the monitor screen.

Use the arrow keys to advance to the next ﬂashing ﬁeld and change the

appropriate value by pressing the + or - key.

Example: To set the start time, 18:30 On.

Press the arrow down key 3 times so that the 00:00- ﬁeld ﬂashes.

Press OK.

Now a time program for the start time will be shown

Press the arrow down key 2 times to the last line and 00:00 OFF appears

there.

The ﬁrst ﬁeld is ﬂashing. Enter 18 (h).

Select next ﬁeld. Enter 30 (min).

Select next ﬁeld. Enter the ON function.

The last line now reads: 18:30 ON.

IMAGE 5. TO SET THE CLEANING PERIOD

15mi n CL EAN.

REI NI GUNG

12: 00- 12: 15

18: 30- 18: 45

ZON/ ZONE : 2

( 1- 3 )

VERZÖGERUNG

DELAY T= 20

15mi n CL EAN.

REI NI GUNG

12: 00- 12: 15

00: 00- 00: 00

Caution!

The period selected must always be a 15 minute

period.

Caution!

Do not change lines 1-3.

Caution!

Do not change lines 1-3.

Installation and maintenance instructions

FläktGroup DC_9205GB 20180329_R0 Specifications are subject to alteration without notice

S=120 B3= 53

A= 73 B2= 33

C= 20 B1= 28

F=540 CP= 2

RC1

ESC

11-15

1-9

PE N

T1, Transformator 230VAC/24VDC

RC1, Reglercentral (PLC)

K1-K2, Kontaktor

Q1-Q2, ÷verlastskydd

F1, S‰kring 2A

(55) (08)

YYYY/MM/DD

: 55

2006 / 03 / 07

Ex.

ClockSet

TID

ZEIT

TIME

08:55

TID

ZEIT

TIME

08:55

YYYY/MM/DD

: 55

2006 / 03 / 07

ClockSet

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TIME

08:55

TID

ZEIT

TIME

08:55

Bild 7. Inst‰llning av klockan.

INAKTIVITET

INACTIVITY

INAKTIVITÄT

T> 240 min

(55)(08)

YYYY/MM/DD

: 55

2006 / 03 / 07

Ex.

ClockSet

TID

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TIME

08:55

RC1

ESC

11-15

1-9

PE N

T1, Transformator 230VAC/24VDC

RC1, Reglercentral (PLC)

K1-K2, Kontaktor

Q1-Q2, ÷verlastskydd

F1, S‰kring 2A

(55) (08)

YYYY/MM/DD

: 55

2006 / 03 / 07

Ex.

ClockSet

TID

ZEIT

TIME

08:55

TID

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TIME

08:55

YYYY/MM/DD

: 55

2006 / 03 / 07

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TIME

08:55

TID

ZEIT

TIME

08:55

Bild 7. Inst‰llning av klockan.

INAKTIVITET

INACTIVITY

INAKTIVITÄT

T> 240 min

(55)(08)

YYYY/MM/DD

: 55

2006 / 03 / 07

Ex.

ClockSet

TID

ZEIT

TIME

08:55

IMAGE 6. PRESET LEVELS AND PARAMETERS

(CAN BE ALTERED AFTER ENTERING A PASSWORD)

IMAGE 7. TO SET THE CLOCK

The clock must always be set if the unit has been without current for

approx. 100h.

Summer/winter time changeover occurs automatically according to LQ

Standard.

Do the following to alter the time.

Press the arrow down key so that the clock time ﬂashes.

Press OK.

The Date and Time Image now appears on the screen. Only the time

needs to be set.

Use the arrow keys to move the ﬂashing ﬁeld and change each value with

the + and - keys.

When you’ve set the time, press the OK key to return to Image 7.

S = Height of the ultrasound sensor above the bottom of the water

tray.

A = Max. water level when ﬁlling.

C = Min. water level. (Pump stopped).

F = Adjustment/scaling of the sensor’s output signal.

B3 = Level for zone 3

B2 = Level for zone 2

B 1 = Level for zone 1

CP = 1-4: How the pump(s) should operation when the inputs for

hygrostats RH1 and RH2 respectively are closed.

1 pump, 1 step

CP = 1, RH1 starts CP1, RH2 is disconnected.

Alarm from CP2 is interlocked.

2 pumps in parallel

CP = 2, RH1 starts both CP1 and CP2, (factory setting) Can also be

used if only CP1 exists.

2 pumps in sequence

CP = 3, RH1 starts CP1, RH2 starts both CP1 and CP2.

2 pumps, binary mode

CP = 4, RH1 starts CP1, RH2 starts CP2, RH1+RH2 starts both CP1 and

CP2.

Caution!

The pumps will be interlocked if the water

level is low, if the unit is idle and if an alarm is

initiated from the relevant overload protection.

Installation and maintenance instructions

FläktGroup DC_9205GB 20180329_R0 Specifications are subject to alteration without notice

RC1

ESC

11-15

1-9

PE N

T1, Transformator 230VAC/24VDC

RC1, Reglercentral (PLC)

K1-K2, Kontaktor

Q1-Q2, ÷verlastskydd

F1, S‰kring 2A

(55) (08)

YYYY/MM/DD

: 55

2006 / 03 / 07

Ex.

ClockSet

TID

ZEIT

TIME

08:55

TID

ZEIT

TIME

08:55

YYYY/MM/DD

: 55

2006 / 03 / 07

ClockSet

TID

ZEIT

TIME

08:55

TID

ZEIT

TIME

08:55

Bild 7. Inst‰llning av klockan.

INAKTIVITET

INACTIVITY

INAKTIVITÄT

T> 240 min

(55)(08)

YYYY/MM/DD

: 55

2006 / 03 / 07

Ex.

ClockSet

TID

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TIME

08:55

TO ZERO CALIBRATE THE ULTRASOUND SENSOR

The sensor has been zero calibrated for an empty water tray in the

FläktGroup workshop. If the need for a zero calibration should arise in

the future, the lock nuts of the sensor can be used for adjusting its height

position. The sensor should ﬁrst warm up prior to calibrating, i.e. operate

for at least 15 minutes after switching on the power. During the warm-up

time, the display may show a water level that is a few millimetres in error.

ALARMS

There is a potential-free group alarm output in the junction box.

The alarms that appear on the monitor screen are as follows:

ALARM LEVEL

The water level continues to rise above the max. level ”A”. This is probably

due to the solenoid valve MV1 not shutting. An alarm is initiated after 5

min.

The water level has not reached max. level ”A” while ﬁlling. This is

probably due to the following: the solenoid valve MV1 does not open, the

water tap is shut off, or the drain valve SV1 does not close. An alarm is

initiated after 30 min.

The sensor detects unreasonable values, outside its detection range, is

not properly directed towards the surface of the water or has stopped

operating. This is also shown on the LEDs of the sensor: both shine red.

An alarm is initiated after 5 min.

ALARM CP1-Q1 OR CP2-Q2

Has been initiated because the overload protection for circulation pump

CP1 or CP2 has tripped.

ALARM RESET

Press the ESC keypad to reset the alarm.

F1, Fuse 2A

T1, 230VAC/24DVDC Transformer

RC1, Controller (PLC)

K1-K2, Contactor

Q1-Q2, Overload protection

Fig. 7 Components inside of the control box

Installation and maintenance instructions

FläktGroup DC_9205GB 20180329_R0 Specifications are subject to alteration without notice

WIRING DIAGRAM

LNPE

SV 1

0-10V

Alarm

TF 1

643

Q 2

Q 1

RH 1

RH 2

MV 1

CP 2

CP 1

K1 K2

Q1 Q2

TERMINAL

SV 1 L1

RC1

95 96

CP1 CP2

246

513

Brown

Blue

Shielded

White

Level sensor

PEPE

3-phase 3-phase

Solenoid valve

GU1

Valve actuator

312

MV1

SV1

Circulation pump(s)

Alarm output

(Hygrostat RH2)

Hygrostat RH1

Start signal from TF1

230VAC / 24VDC

ContactorContactor

Overload protection Overload protection

Transformer

External high-voltage switch

3x400VAC+N+PE

50 Hz

15 Grey

0.41/0.50A 0.41/0.50A

Max 250VAC 8A

Alarm

Normally-open

Normally-closed

Black

Brown

Blue (Grey)

Brown

Black

Blue (Grey)

Light blue

Dark blue

Grey

Green

Brown

BrownBlue(grey)

Black

Brown

Blue

Brown

Red

Yellow

Violet

Orange

Grey

Dark blue

White

Ledarna skall ändmärkas

Controller (PLC)

264

135A2

246A1

2956496

FläktGroup LQQA Humidifier for circulated water Installation and Maintenance Manual