FläktGroup CAIRpool CUBI Operating instructions

CAIRpool CUBI

OPERATION MANUAL

Table of Contents CAIRpool CUBI

2FG-DC-10569-GB-CAIRpool CUBI-OM-05-2021-R0 • Subject to modifications

1 Safety and User Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.1 Availability of the operation manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.2 Scope of the operation manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.3 Symbols used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.4 Identification of safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.5 Used safety symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.6 Safety-conscious work procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.7 Proper use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.8 Modifications and changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.9 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.10 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.11 Selection and qualification of personnel . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2 Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.1 CAIRpool CUBI unit types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.2 Functional principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.3 Description of controller functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.4 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.5 Operating limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.6 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.7 Performance curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3 Shipping and Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.1 Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.2 Shipping damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.3 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.4 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4 Installing unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4.1 Mounting unit / intermediate frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4.2 Positioning and installation space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4.3 Installing unit in technical rooms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

4.4 Hydraulic connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

4.5 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

4.6 Electric circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

5 Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

5.1 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

5.2 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

5.3 Flow rate calibration for unit with electronic fan . . . . . . . . . . . . . . . . . . . . 41

5.4 Change into standby mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

6 Operating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

6.1 Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

6.2 Main page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

6.3 User menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

6.4 Alarms menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

6.5 Unit status menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

6.6 Hour band menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

6.7 Other pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

CAIRpool CUBI Table of Contents

FG-DC-10569-GB-CAIRpool CUBI-OM-05-2021-R0 • Subject to modifications 3

7 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

7.1 Before maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

7.2 During maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

7.3 After maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

7.4 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

7.5 Cleaning or replacing air filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

7.6 Cleaning the condensate collection tray and condensate drain pipe . . . . .54

7.7 Maintenance table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

8 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

9 Disassembly and Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

9.1 Dismantling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

9.2 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

9.3 Environmental protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

10 Appendix: Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . 58

10.1 Units for installation in pool room . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

10.2 Units for installation in technical room . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

11 EC Declaration of Conformity. . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Safety and User Information CAIRpool CUBI

4FG-DC-10569-GB-CAIRpool CUBI-OM-05-2021-R0 • Subject to modifications

1 Safety and User Information

CAIRpool CUBI series units are constructed using state-of-the-art technology and

according to recognized safety regulations.

Use the FläktGroup units only in a technically sound condition for the intended pur-

pose, observing the current operation manual and taking safety aspects and potential

hazards into account. Failure to follow the instructions in this manual may result in dan-

ger to health and safety, damage to materials and incorrect unit operation. Have all

faults repaired by an authorized specialist without delay!

1.1 Availability of the operation manual

This operation manual contains important instructions regarding safe and correct oper-

ation of the unit.

This operation manual applies to installation companies, operators, building techni-

cians, technical personnel or instructed persons as well as electricians.

This operation manual must be available at the location of the unit at all times. When

working on the equipment, observe all instructions and precautions in the current oper-

ation manual, in particular the chapter on safety.

1.2 Scope of the operation manual

This operation manual provides information about the following:

– Shipping and Storage

– Installing

– Commissioning

– Operating

– Maintenance

– Troubleshooting

– Disassembly and Disposal

1.3 Symbols used

The following symbols are used to highlight particular text sections in this operation

manual:

– This symbol is used to indicate normal lists.

•This symbol indicates handling instructions.

This symbol indicates the result of an action.

ATTENTION

Damage to the unit!

In case of alarms and faults, always make sure that the cause of the error is iden-

tified. In particular, a manual reset of an alarm without first rectifying the cause can

damage the unit and invalidate the warranty.

Notice!

This symbol denotes additional instructions on using the unit.

Recycling!

This symbol is used to highlight instructions for the recycling of packaging material

and disused unit components, which must be separated depending on the material

type.

CAIRpool CUBI Safety and User Information

FG-DC-10569-GB-CAIRpool CUBI-OM-05-2021-R0 • Subject to modifications 5

1.4 Identification of safety instructions

The following designations/symbols are used in this manual to specify safety instruc-

tions:

1.4.1 DANGER – Death/serious irreversible injury

Indicates an (extremely) hazardous situation which will result in death or serious

irreversible injury if the safety instructions are not followed.

Example:

1.4.2 WARNING – Death/serious injury

Indicates a hazardous situation which can result in death or serious irreversible

injury if the safety instructions are not followed.

Example:

1.4.3 CAUTION – Minor or moderate injury

Indicates a hazardous situation which can result in minor or moderate injury if the

safety instruction is not followed.

Example:

1.4.4 ATTENTION – Environmental or material damage

Indicates actions that can result in damage to equipment or property.

Electrocution through hazardous voltage will lead to death or serious injury!

•Disconnect the unit from the power supply and ensure the power cannot be

switched back on.

•Ensure the unit is voltage-free and isolated, earth and short circuit the unit, cover

or shield off neighboring live components.

Warning of high pressure!

When working on hydraulic equipment or in case of damage to the components or

piping, there is a risk of injury from liquids or gases escaping at high pressure.

•Wear suitable protective clothing including glasses when working on the open

unit.

Sharp edges can cause injuries!

Risk of cutting injuries due to thin and sharp edges.

•Wear suitable protective clothing when working on the open unit.

ATTENTION

Safety and User Information CAIRpool CUBI

6FG-DC-10569-GB-CAIRpool CUBI-OM-05-2021-R0 • Subject to modifications

Examples:

1.5 Used safety symbols

ATTENTION

Environmental damage!

•Dispose of all components and filters (activated-carbon filter, filter cartridges,

etc.) and disused operating materials (e.g. oil, refrigerants and water-glycol

mixture) in an environmentally-friendly manner in accordance with the local

codes, practices and environmental regulations.

ATTENTION

Damage to the unit!

•Do not tipp the unit more than 45° when transporting it to the installation site.

•Do not transport the unit in a lying position.

Electrical hazard

Personal injury

Overhead loads

Rotating components

Sharp cutting edges

Hot surfaces

Scalding

Inflammable materials

Explosion

Static discharge

Environmental damage

Damage to the unit

CAIRpool CUBI Safety and User Information

FG-DC-10569-GB-CAIRpool CUBI-OM-05-2021-R0 • Subject to modifications 7

1.6 Safety-conscious work procedures

Observe the following instructions when carrying out installation, adjustment or repair

jobs:

•Wear suitable protective clothing during all work, such as protective footwear,

gloves, safety goggles, etc.

•Avoid flame sources, especially burning cigarettes. Open flame sources and

smoking in the proximity of the unit are prohibited. Filters in general and used filters

in particular can easily catch fire. Leaking refrigerant can catch fire and emit noxious

substances.

•Place a first aid box and a fire extinguisher near the unit.

•Periodically check that the fire extinguishers are loaded and all operators know how

to use them.

•If a fire breaks out, use the fire extinguisher according to the relative regulations in

force and contact the fire brigade.

•Periodically check that the first aid kit is complete.

•Make sure the emergency telephone numbers are readily available and nearby.

•The owner of the property where the unit is installed is responsible for providing any

fire extinguishers and a first aid kit.

General Notes:

– As long as the unit is operating and rotating parts are still moving, do not remove any

unit covers and protective covers.

– Before switching on the unit again, make sure that the unit covers and protective

covers are properly attached.

When working within range of mains voltage:

– For units with integrated compensation/capacitors of reactive current, wait at least

5 minutes after opening the on-site main switch before starting any work.

– Check the ground connection of the unit before restarting it.

– External voltage can exist in the switch cabinet despite open main switch.

– The unit belongs to the A1 safety group.

Electrocution through hazardous voltage will lead to death or serious injury!

•Disconnect the unit from the power supply and ensure the power cannot be

switched back on.

•Ensure the unit is voltage-free and isolated, earth and short circuit the unit, cover

or shield off neighboring live components.

Safety and User Information CAIRpool CUBI

8FG-DC-10569-GB-CAIRpool CUBI-OM-05-2021-R0 • Subject to modifications

When working with refrigerants:

Please consider section "1.6.1 Handling refrigerants" on page 9.

For all kinds of work on open unit:

•Please comply with the installation and shipping instructions for FläktGroup units.

•Observe the pre-commissioning requirements.

•Always make sure that the FläktGroup unit is accessible only to authorized and

trained technical personnel. If necessary, use appropriate equipment to keep

unauthorized persons away from the unit.

•Have all leaks eliminated by the FläktGroup Service or a specialist refrigeration

company immediately.

•The safety data sheet stating the type of refrigerant charged on the given unit shall

be firmly secured in the machine room of the unit in a well visible manner (refer to

unit identification plate or operation manual for the unit).

•Ensure that proper trays or similar vessels are mounted below the unit in order to

reliably capture oil and antifreeze agents and prevent contact with the environment.

Danger due to toxic substances!

High concentrations of refrigerants in the air may have an anaesthetic effect and

cause unconsciousness. Prolonged exposure may cause irregular heartbeat and

sudden death. Very high concentrations of refrigerants may cause suffocation by

reducing the oxygen content in the ambient air.

•You should therefore only work in an adequately ventilated environment

•Exercise due caution and attention when carrying out this work.

Contact with refrigerant can lead to injuries!

Contact with a liquid refrigerant can result in skin burns or injury to other organs.

•Wear protective clothing and chemical resistant gloves.

•Exercise due caution and attention when carrying out this work.

Warning of hot surfaces!

Hot surfaces can cause severe burns.

•Before working on the open unit make sure that hot parts such as heat

exchangers and refrigerant pipes have cooled down.

•Wear suitable protective clothing when working on the open unit.

Sharp edges can cause injuries!

Risk of cutting injuries due to thin and sharp edges.

•Wear suitable protective clothing when working on the open unit.

Warning of high pressure!

When working on hydraulic equipment or in case of damage to the components or

piping, there is a risk of injury from liquids or gases escaping at high pressure.

•Wear suitable protective clothing including glasses when working on the open

unit.

•Make sure there are no leaking fluids or hazardous substances.

•Should there be a leak, do not restart the unit before the problem has been

resolved.

CAIRpool CUBI Safety and User Information

FG-DC-10569-GB-CAIRpool CUBI-OM-05-2021-R0 • Subject to modifications 9

1.6.1 Handling refrigerants

According to DIN EN 378 Part 1 the R-410A refrigerants belongs to the A1 safety

group. Refer to the unit identification plate for information on the refrigerant used and

the refrigerant charge volume.

Observe the usage details in accordance with EC regulation 517/2014.

The refrigerants used here contain fluorinated gases and contribute to the greenhouse

effect. Therefore, refrigerants must not be released to the atmosphere.

Features of applicable refrigerant types:

– Non-combustible

– No direct toxic effect

– Colorless and odorless

– Heavier than air

– Contains fluorinated greenhouse gases

– Ozone-depleting potential OPD: 0

– Refrigerant R410A

GWP 2088

Safety group A1

– Water hazard class WGK: 1, with a slight risk to water

•Wear appropriate clothes when performing jobs with refrigerants and on the

refrigeration circuit, e.g.

– sealing safety goggles

– PVA or leather gloves

– protective clothes for entire body

– if necessary, an autonomous breathing apparatus

First aid First aid measures directly after or during contact with refrigerants:

– Ensure your own protection against leaking refrigerant.

– Under all circumstances - call a doctor and/or an ambulance.

– Remove clothes contaminated by the refrigerant.

Inhalation Additional measures after inhalation of refrigerants:

– Take the injured person to a well-ventilated location.

– Ensure that the injured person is in a stable lateral position.

– Consumption of food and beverages must be avoided.

– If the injured person collapses or loses consciousness – perform mouth-to-mouth re-

suscitation.

Skin contact Additional measures after skin contact with refrigerants:

– Rinse the affected body parts using lukewarm water for at least 15 min.

Eye contact Additional measures after eye contact with refrigerants:

– Do not rub your eyes.

– Remove contact lenses if you have any.

– Rinse your eyes with much water.

Refrigerant or leaking refrigerant can cause oxygen deficiency, especially in closed

rooms. Therefore, plant rooms must be adequately ventilated according to EN 378-9

and the nationally applicable regulations. If necessary, refrigerant detectors must be

used.

Safety and User Information CAIRpool CUBI

10 FG-DC-10569-GB-CAIRpool CUBI-OM-05-2021-R0 • Subject to modifications

1.7 Proper use

The CAIRpool CUBI units are dehumidifiers for small swimming pools for exposed

installation, designed for use only in indoor environments in which failure to control

humidity can cause damage to the structure.

The purpose of units is to dehumidify, ventilate and heat air in indoor swimming pools

and other indoor areas with high humidity load.

It is intended for use in swimming pools treated with chlorine, not for use in salt swim-

ming pools.

The units are designed for use in swimming pools or places with the high presence of

chlorine and other corrosive substances. It is extremely important to leave the unit

always on in order to avoid the depositing of corrosive substances and therefore its

probable damage.

CAIRpool CUBI units operate only in recirculating air mode.

Operation of units is only allowed within the operating limits indicated in this manual,

refer to chapter "2.5 Operating limits" on page 18.

Proper use also includes observance of the operation manual and the inspection and

maintenance conditions stipulated by FläktGroup.

Improper use Any other (than the above-mentioned) application or use that goes beyond that

described as proper use is deemed as improper use. The manufacturer/supplier is not

liable for any damages arising from improper use. The user alone bears the risk.

It is not allowed to operate the unit:

– in areas subject to explosion or fire risk

– in environment with vibrations

– in environment with conductive dust

– in environment with strong electromagnetic fields

– in environment with aggressive atmosphere that may attack plastics or cause corro-

sion (especially in atmospheres where zinc is particularly susceptible to corrosion)

Operating conditions:

Room temperature min. approx. 12 °C/max. 36 °C

(when using defrost accessories the application range changes to 5 °C to 36 °C)

Room air humidity min. 45% / max. 95% RH

Water quality (applies only for use in swimming pools)

Corrosion protection of installed unit components on the air side is ensured if the limit

values for chemicals in pool water as specified in VDI 2089 Sheet 2 "Water treatment

in swimming baths" and VDI 19643 are not exceeded.

CAIRpool CUBI Safety and User Information

FG-DC-10569-GB-CAIRpool CUBI-OM-05-2021-R0 • Subject to modifications 11

1.8 Modifications and changes

You are not allowed to change, add to or modify the unit in any way. Tampering with

the FläktGroup unit, its misapplication or modifications will invalidate the CE conformity

and void warranty.

1.9 Spare parts

Only original FläktGroup spare parts are allowed, since FläktGroup is not liable if third-

party spare parts are used.

1.10 Disposal

Dispose of main and operating supply materials as well as other components and fil-

ters according to their material type in a safe and environmentally-friendly manner, also

refer to chapter "9 Disassembly and Disposal" on page 57.

1.11 Selection and qualification of personnel

Ensure that every person working on the unit has read and understood entire operation

manual.

All jobs must only be carried out by qualified licensed staff or other individuals with

proper professional training and experience in the following areas:

– Occupational health and safety regulations

– Accident prevention regulations

– Directives and recognized codes of practice

All skilled staff must be able to assess the entrusted work and must be able to recog-

nize and avoid all associated dangers.

Technical Description CAIRpool CUBI

12 FG-DC-10569-GB-CAIRpool CUBI-OM-05-2021-R0 • Subject to modifications

2 Technical Description

CAIRpool CUBI dehumidifiers for installation in swimming pools and technical rooms

are designed for small pools with a high latent load where 24-hour operation is

required. Application range of units also includes underground rooms, museums,

libraries, archives, places of religious worship, warehouses and other premises where

the formation of condensation and humidity can cause damage to the structure or prod-

uct or could simply create discomfort.

Fig. 2-1: CAIRpool CUBI

The CAIRpool CUBI range of dehumidifiers includes three unit sizes F501, F801 and

F1201 ranging from 450, 800 to 1200 m3/h and from 52, 98 to 186 l of moisture

removed per day.

There are 6 models available for selection depending on unit size and dehumidifying

capacity.

Units are delivered without mounted feet.

2.1 CAIRpool CUBI unit types

Fig. 2-2: CAIRpool CUBI unit types

Installation variants:

– unit for exposed installation in swimming pool (left)

– unit installation behind rear wall in a technical room (right)

CAIRpool CUBI Technical Description

FG-DC-10569-GB-CAIRpool CUBI-OM-05-2021-R0 • Subject to modifications 13

2.2 Functional principle

The closed refrigeration circuit consists of a scroll compressor, water-cooled con-

denser (accessory), air-cooled condenser, expansion valve with injection-capillary

tubes and air cooler. The refrigeration circuit is filled with environmentally-friendly

R410A.

Refrigeration circuit and air

management The swimming-pool air is sucked by the fan from below and passed through the air fil-

ter. Air is moved through the evaporator (air cooler) and cooled down.

Depending on the air humidity, the air cools below the dew point. The water vapor of

the pool air condenses on the fins of the air cooler and is collected as water in the con-

densate tray.

The condensate is then discharged via a rear pipe to the drain/sewage.

The manufacturer does not recommend to return condensed water to the swimming

pool for hygienic reasons.

The dehumidified air is heated again using the refrigerant condenser and supplied

back into the swimming pool area.

Supply air can be additionally heated by an optional heating coil (pumped warm water

and/or electric heating).

Fig. 2-3: Functional principle

1: Heat exchangers (lower part is evaporator, upper part is condenser)

2: Condensate tray

3: Condensate drain

Technical Description CAIRpool CUBI

14 FG-DC-10569-GB-CAIRpool CUBI-OM-05-2021-R0 • Subject to modifications

Fig. 2-4: Functional principle (front view)

1: Compressor

2: Evaporator

3: Condenser

4: Reheater

5: Fan

6: Controller

Fig. 2-5: Functional principle (side view)

1: Compressor

2: Evaporator

3: Condenser

4: Reheater

5: Fan

CAIRpool CUBI Technical Description

FG-DC-10569-GB-CAIRpool CUBI-OM-05-2021-R0 • Subject to modifications 15

Fig. 2-6: Functional scheme

1: Compressor

3: High-pressure switch

4: Condensing coil

5: Dehydrating filter

6: Flow indicator

7: Solenoid valve

8: Lamination elements

9: Evaporating coil

10: Low pressure probe

20: Water post-heating coil [optional]

21: 3-way water valve [optional]

22: Hot gas defrost valve [optional]

30: Fan

Recirculating-air operation,

no dehumidification

requirement

As long as the humidity setpoint is not reached, the CAIRpool CUBI operates at low

fan speed in ventilating/air circulation mode in order to largely avoid wet corners and

clouding of the windows.

Dehumidification operation The dehumidification is switched on with the humidity switch in the remote control

whenever the inside air humidity rises above the preset setpoint. The high fan speed

and the compressor are then automatically taken into operation.

After the inside air humidity drops by about 5% rel. hum. below the preset setpoint, the

compressor is switched off (observe minimum standing and running period) and the

fan switched back to the low fan speed.

Technical Description CAIRpool CUBI

16 FG-DC-10569-GB-CAIRpool CUBI-OM-05-2021-R0 • Subject to modifications

2.3 Description of controller functions

The CAIRpool CUBI units are equipped with a powerful control with graphic display

and on-board temperature and humidity probes that make the dehumidifier completely

autonomous in reading and managing temperature and humidity.

The control consists of a card with programmable microprocessor and a graphic dis-

play that allows a large number of functions and options that can be easily managed

thanks to a simple, complete and intuitive interface, specified in chapter "6 Operating"

on page 43.

The dehumidifier management software is entirely developed in the company by highly

specialist technicians. The Control display can be remoted up to 20 m away and,

thanks to the temperature and humidity probe on the machine, it can manage tempera-

ture, humidity and machine stand-by time bands.

Below are all the control functions:

– display of unit operating status and/or alarms

– temperature and humidity probe on the machine

– low evaporation pressure protection probe

– management of 3 ventilation speeds in dehumidification, recirculation and heating

– stand-by time band management

– time slot temperature management

– time slot humidity management

– alarm history management

– simultaneous management of electric heating elements and hot water coil with 3-

way valve (models F501 excluded)

– automatic static defrost management

– automatic hot gas defrost management

– digital output for generic alarm

– backlit graphic display

– possibility to remote the display for a wall positioning

Fig. 2-7

CAIRpool CUBI Technical Description

FG-DC-10569-GB-CAIRpool CUBI-OM-05-2021-R0 • Subject to modifications 17

2.4 Options

2.4.1 Overview of optional components

2.4.2 Description of optional components

Hot water coil with

3-way valve It consists of a hot water post-heating coil and a 3-way valve directly controlled by the

unit which have the purpose of heating the supply air thanks to the hot water arriving

from a boiler or from a heat pump. The unit is supplied with a coil and valve already

assembled and wired.

Electric heating elements They allow supply air heating when no hot water is available. Safety is guaranteed by

a thermostat that in the event of overheating disables the heating elements and signals

the alarm. The unit is supplied with the electric heating elements already mounted

inside.

EC modulating

electronic fan The fans mounted inside the unit will be modulating EC brushless type.

Hot gas defrost It consists of a gas valve which injects hot gas into the evaporating coil allowing rapid

defrosting and extending the dehumidifier application limit.

Silenced version with sound-

proofing of the

compressor

It allows the noise emitted by the compressor to be decreased and thus makes the

dehumidifier particularly silent. It consists of a sound absorbing mat in the compressor

compartment that attenuates the noise emitted by the compressor.

Display remote kit

(up to 20 m) It is used to move the unit's display to a position that is more comfortable for the user.

It consists of cable (up to 20 m) ready for connection and a cover for the display hole

on the unit.

RS485 Modbus serial card The RS485 modbus connection is made available for remote or home automation sys-

tem supervision. More information available on request.

Support feet kit for floor

installation Only in combination with exposed units, they allow the unit to rest on the floor avoiding

wall mounting. Required in all those situations where the wall cannot support the

weight of the unit.

Exposed unit

with casing

Technical room unit

without casing

Hot water coil with 3-way valve ••

Electric heating elements ••

EC modulating electronic fan ••

Hot gas defrost ••

Silenced version with soundproofing of

the compressor ••

Display remote kit (10 or 20 m) ••

RS485 Modbus serial card ••

Support feet kit for floor installation •-

Wall crossing plenum kit (2 pcs) -•

Air supply and return plenum (2 pcs) -•

Supply and return air grilles (2 pcs) -•

Frame adapter for intermediate frame •-

• = option available

- = option not available

Technical Description CAIRpool CUBI

18 FG-DC-10569-GB-CAIRpool CUBI-OM-05-2021-R0 • Subject to modifications

Wall crossing plenum kit

(2 pcs) Only in conjunction with the version for rear-wall installation in a technical room, this

accessory can be supplied which allows installation of the unit on a wall adjacent to the

room to be dehumidified. The channels must be cut to size during assembly (they are

suitable for walls of up to 300 mm) and must be inserted inside the wall.

Air supply and return

plenum (2 pcs) Only in conjunction with the version for rear-wall installation in a technical room, this

accessory can be supplied which allows installation of the unit on a wall adjacent to the

room to be dehumidified. The plenums should be fixed on the unit with the air flows

towards the wall.

Supply and return air grilles

(2 pcs) Only in conjunction with the version for rear-wall installation in a technical room, this

accessory can be supplied which allows installation of the unit on a wall adjacent to the

room to be dehumidified. The grids must be inserted in the crossing channels from the

room to be dehumidified. They are in anodised aluminium with fixed fins and are char-

acterised by a pleasant elegant but understated design.

Frame adapter for

intermediate frame The frame can be used to cover the space between electrical wiring and drain connec-

tion.

2.5 Operating limits

Outside the limits indicated below, unit operation is not guaranteed.

Fig. 2-8: Operating limits

1: Humidifier operating limit

2: Additional operating limit with hot gas defrost option installation

Internal air humidity [°C]

Internal air temperature [°C]

1

2

CAIRpool CUBI Technical Description

FG-DC-10569-GB-CAIRpool CUBI-OM-05-2021-R0 • Subject to modifications 19

2.6 Technical Data

Tab. 2-1: Technical Data

1) The dehumidification power is declared in the nominal point 30 °C / 80% RH.

2) The power of the hot water coil is declared with ambient air at 30 °C and water in 80 °C and out 70 °C.

3) The sound pressure SPL/LP(A) is measured at 1 m in free field.

4) The currents and the absorbed powers are declared in the nominal point 30 °C / 80% RH.

In different conditions the declared values will undergo variations which can also be significant, the further away from

the nominal operating conditions.

MODEL Unit F501 F801 F1201

Dehumidification capacity1) l/day 52 98 186

Nominal air flow m³/h 450 800 1200

Useful static head Pa 40 40 40

Sound pressure3) dB(A)454953

Hot water coil power2) kW 4.5 7.5 11.5

Water coil load loss with valve kPa 16 50 31

Electrical power supply V/ph/Hz 230/1+N/50 230/1+N/50 230/1+N/50

Heating element power kW 1 3.2 4

Nominal compressor power kW 0.7 1.37 2.49

Nominal compressor current A 3.34 6.37 11.5

Nominal unit power4) kW 0.8 1.5 2.7

Maximum unit power kW 1.1 2 3.3

Nominal unit current4) A 3.6 6.8 12.4

Maximum unit current A 5.1 8.9 15.1

Peak unit current A 19.1 36.5 63

Maximum unit current with re-

sistances A 9.5 22.8 32.5

Peak unit current with

resistances A 23.4 50.4 80.4

Exposed unit dimensions

(base x depth x height) mm 850 x 280 x 780 1050 x 280 x 780 1350 x 330 x 850

Technical room unit

dimensions (base x depth x

height)

mm 803 x 257 x 764 1003 x 256 x 745 1302 x 306 x 834

Weight kg 46 55 88

Refrigerant type R410A R410A R410A

Technical Description CAIRpool CUBI

20 FG-DC-10569-GB-CAIRpool CUBI-OM-05-2021-R0 • Subject to modifications

2.7 Performance curves

The temperature is shown on the bottom axis.

The dehumidification capacity is indicated on the left axis.

To calculate the dehumidification capacity at a specific work point:

•assume a position on the lower axis at ambient temperature

•ascent until crossing the ambient humidity curve

•move to the left and read the dehumidification capacity at that work point

F501

Fig. 2-9: F501

F801

Fig. 2-10: F801

F1201

Fig. 2-11: F1201

L/day

Ambient temperature

80% RH

70% RH

60% RH

50% RH

L/day

Ambient temperature

80% RH

70% RH

60% RH

50% RH

L/day

Ambient temperature

80% RH

70% RH

60% RH

50% RH

Page is loading ...

FläktGroup CAIRpool CUBI Operating instructions

FläktGroup CAIRpool CUBI Operating instructions

Related papers

Other documents