VCV Wesper

8/10/2019 VCV Wesper

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Low and High Static

Fan Coil UnitsModels VHN 02LS to 12LS & 04HS to 22HS

IMW 249.0E/01.00Supersedes : None

Installation

andMaintenance

Manual

R


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Page 2

Table of Contents

Introduction ............................................................................................................................................ p. 3

Safety Precautions ................................................................................................................................. p. 3

Description ............................................................................................................................................. p. 4Inspection and storage .........................................................................................................................................p. 4

Electrical data .......................................................................................................................................................p. 4Operating limits .....................................................................................................................................................p. 4

Dimensional Data and Weight ............................................................................................................... p. 5

Installation .............................................................................................................................................. p. 6

Unit Handling ........................................................................................................................................................p. 6

Installation location ...............................................................................................................................................p. 6Installation instructions .........................................................................................................................................p. 6

Water Connections ................................................................................................................................. p. 7Water coil connections ..........................................................................................................................................p. 7

Condensate drain connection ..............................................................................................................................p. 7

Electrical Connections........................................................................................................................... p. 8

Unit connection .....................................................................................................................................................p. 8

Controls .................................................................................................................................................................p. 8Electric heater .......................................................................................................................................................p. 8Standard wiring diagram ......................................................................................................................................p. 8

Preliminary Checks Before Start-up ...................................................................................................... p. 9

Operation ................................................................................................................................................ p. 9

Maintenance ........................................................................................................................................... p. 9

Notes....................................................................................................................................................... p. 11


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1 - Introduction

The purpose of this manual is to provide the installation,start-up, operating and maintenance rules to the users ofthe VHN fan coil units.

It does not give a full description of all maintenance works

2 - Safety Precautions

Before installing the unit, please read the following safety precautions carefully.

assuring the long life and reliability of this type ofequipment.Only the services of qualified personnel,member of a registered maintenance company, canguarantee a reliable and durable running of the machine.

Warning !

Installation, operation and maintenance must beperformed by qualified personnels who are familiar withlocal codes and regulations and experienced with thistype of equipment.

Warning !

All field wiring must be installed in accordance with thenational wiring regulations.

Warning !

Ensure the rated voltage of the unit corresponds to thename plate before carrying out wiring according to thesupplied wiring diagram.

Warning !

The unit must be GROUNDED to prevent possiblehazards due to insulation failures.

Warning !

All wiring must not touch the heat source or any movingparts of fan motor.

Warning !

Confirm the unit is switched OFF before installing orservicing the unit.

Caution !

Handling of the unit must be done by using the systemsdesigned to support its weight.

Caution !

It is forbidden to undertake any work on electricalcomponents of the unit before disconnecting the powersupply.

Caution !

It is forbidden to undertake any work on electricalcomponents of the unit, if there is presence of water andhumidity.

Caution !

When undertaking water connection, make sure that anyforeign matters will not be introduced into water piping.

The manufacturer warranty will not be applied, if all installation instructions stated inthis manual have not been followed.


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3 - Description

3.1 - Inspection and Storage

When the equipment is received, all i tems must be carefullychecked against the bill of lading to be sure all crates orcartons have been received. Inspect all units for visible orconcealed damages.

In case of deterioration, formulate the precise reserveson the transport document and send immediately a

3.2 - Electrical Data

Motor absorbed current - 230 V / 1 ph / 50 Hz

Electric heater - 230 V / 1 ph / 50 Hz

3.3 - Operating Limits

registered letter to the forwarder, mentioning clearly theoccured damages and a copy of the letter to themanufacturer or its representative.

Do not stand or transport the unit on its end. Temporarystorage must be indoor, completely sheltered from rain,snow, etc. Change in the weather (high and lowtemperatures) should not damage the unit. Excessively hightemperature (60 C or more) may deteriorate certain plasticmaterials and cause permanent damages. In addition,some electric components may not operate correctly.

Maximum operating pressure 10 bar

Water piping system Minimum entering temperature + 4 C

Maximum entering temperature + 80 C

Room air temperature Minimum temperature 5 CMaximum temperature 32 C

Supply voltage 230 V 10 % / 1 ph / 50 Hz

04HS 06HS 08HS 10HS 12HS 14HS 16HS 18HS 20HS 22HS

HS 0.72 1.25 1.62 1.71 2.82 2.80 3.95 3.86 5.05 4.60

Absorbed Amps* MS 0.55 0.99 1.22 1.35 2.09 2.11 2.70 2.91 3.93 3.74

LS 0.46 0.84 0.95 1.00 1.33 1.25 1.98 2.10 3.31 3.21

VHN size

02LS 04LS 06LS 08LS 10LS 12LS

HS 0.25 0.39 0.72 1.25 1.62 1.71

Absorbed Amps* MS 0.21 0.32 0.55 0.99 1.22 1.35

LS 0.17 0.26 0.46 0.84 0.95 1.00

VHN size

* Maximum current absorbed by motor operating under 0 Pa external static pressure.

* Maximum current absorbed by motor operating under 0 Pa external static pressure.

Unit size

02LS 750 1500 2250

04LS 1000 2000 3000

06LS 1000 2000 3000

08LS 1200 2400 3600*

10LS 1200 2400 3600*

12LS 1500 3000 4500*

Capacity (W) Unit size

04HS 1000 2000 3000

06HS 1000 2000 3000

08HS 1200 2400 3600*

10HS 1200 2400 3600*

12HS 1000 2000 3000

14HS 1200 2400 3600*

16HS 1200 2400 3600*

18HS 1500 3000 4500*

20HS 1500 3000 4500*

22HS 1500 3000 4500*

Capacity (W)

* 400 V, 3-phase power supply + Neutral (power contactor included).


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4 - Dimensional Data and Weight

LEFT HAND UNIT SHOWNHanding of unit is determined by cooling coilconnection when facing air flow.

All dimensions are in mm.

VHN A B C D E F G H I J K L M N

04 HS 1030 1000 1/2" 250 220 760 120 50 57 186 517 25 687.5 47.5

06 HS 1030 1000 1/2" 250 220 760 120 50 57 186 517 25 687.5 47.5

08 HS 1200 1170 3/4" 250 220 760 120 50 57 186 517 25 687.5 47.5

10 HS 1200 1170 3/4" 250 220 760 120 50 57 186 517 25 687.5 47.5

12 HS 1030 1000 3/4" 362 332 760 120 50 57 186 517 25 687.5 47.5

14 HS 1200 1170 1" 362 332 760 120 50 57 186 517 25 687.5 47.5

16 HS 1200 1170 1" 362 332 760 120 50 57 186 517 25 687.5 47.5

18 HS 1500 1470 1" 362 332 760 120 50 57 186 517 25 687.5 47.5

20 HS 1500 1470 1" 362 332 760 120 50 57 186 517 25 687.5 47.5

22 HS 1500 1470 1" 362 332 760 120 50 57 186 517 25 687.5 47.5

VHN A B C D E F G H I J K L M N

02 LS 550 520 1/2" 250 220 568 120 50 57 142 369 25 495.5 47.5

04 LS 1030 1000 1/2" 250 220 568 120 50 57 142 369 25 495.5 47.5

06 LS 1030 1000 1/2" 250 220 568 120 50 57 142 369 25 495.5 47.5

08 LS 1200 1170 3/4" 250 220 568 120 50 57 142 369 25 495.5 47.5

10 LS 1200 1170 3/4" 250 220 568 120 50 57 142 369 25 495.5 47.5

12 LS 1500 1470 3/4 250 220 568 120 50 57 142 369 25 495.5 47.5

Unit size 02 LS 04 LS 06 LS 08 LS 10 LS 12 LS

Weight (kg) 20 28 30 40 45 56

Unit size 04 HS 06 HS 08 HS 10 HS 12 HS 14 HS 16 HS 18 HS 20 HS 22 HS

Weight (kg) 36 40 52 60 62 75 85 105 115 135


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5.1 - Unit Handling

5 - Installation

5.2 - Installation Location

Be careful to avoid rough handling on the unit. Do not lift the unitby the condensate drain outlet or by the water connections.Use a lifting truck to facilitate the unit installation.

Warning !

Sharp edges and coil surfaces are a potential hazard. Avoid

contact with them.

1. The units are designed to be installed above the false ceiling.

2. Install the unit in a position having sufficient strength to carry

the weight of the unit.

3. Install the unit in a position where ducts can be connected toinlet and outlet sides of the unit.

4. Install the unit in a position from where condensate can be runto waste easily.

5. Check the distance between the upper slab and false ceiling to

ensure the unit will suit the distance.

6. Ensure there is sufficient space around the unit to service it.

Warning !

Do not install the unit in a machinery shop or kitchen where

vapour from oil or its mist flows into the unit.

5.3 - Installation Instructions

1. The units are designed to be suspended to the ceiling by

threaded rods or strengthened screws, supplied by the installer.The fixing brackets with oblong holes are located at the top ofthe unit.

2. Install the 4 suspension rods to the upper slab as per fixing

points shown below. Then, install the 4 nuts and the 4 washerson the suspension rods.

3. Lift the unit upwards by sliding the 4 suspension rods into the 4fixing brackets of the unit casing (casing should not touch the

ceiling).

4. Lock the unit in position with 4 other washers, nuts and counter-

nuts and tighten them. Installation of rubber isolators isrecommended to eliminate all risks of vibration transmission.

Note : the set of suspension rods, rubber isolators, washers,nuts and counter-nuts will not be supplied by the manufacturer.

5. Level the unit with a spirit level to assure proper drainageand operation.

6. Unit must be mounted in such a way that water will flow towarddrain connection.

Unit size A (mm) B (mm)

02 LS 590 495.5

04 LS 1070 495.5

06 LS 1070 495.5

08 LS 1240 495.5

10 LS 1240 495.5

12 LS 1540 495.5

Unit size A (mm) B (mm)

04 HS 1070 687.5

06 HS 1070 687.5

08 HS 1240 687.5

10 HS 1240 687.5

12 HS 1070 687.5

14 HS 1240 687.5

16 HS 1240 687.5

18 HS 1540 687.5

20 HS 1540 687.5

22 HS 1540 687.5

Fixing points - Top view

Warning !

Do not install the unit in humid places (glasshouse, mushroombed, changing-room with shower, ...).

Caution !

The unit must be installed at 1.8 m above the floor.


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6 - Water Connections

6.2 - Condensate Drain Connection6.1 - Water Coil Connections

Each water coil is equipped with copper headers having smoothtype copper connection on water supply and water return. A manualair vent is supplied as standard.

To ensure an optimum heat transfer efficiency, connections ofwater supply and return should be arranged to obtain a counter

flow configuration between air and water.

Flexible hoses are recommended for coi l connections. Tightennormally the water connections. Note that an excessive tighteningcan cause too strong material stresses at the time of significant

temperature changes.

All water lines should be insulated to prevent sweating and heatloss.

The condensate drain pan is supplied with 7/8" OD copper tubeoutlet.

The drain line must be installed with a downward slope. Ensurewater trap is available on drain piping.

On completion, the drain line should be insulated.

Caution !

Check that there is no counter-slope which would preventcondensates from flowing.

Warning !

All foreign material must be removed from the drain pan.

Water volume of coils

Unit size

No of rows Liters

02 LS 4 1.2

04 LS 4 2.2

06 LS 4 2.2

08 LS 4 2.6

10 LS 4 2.6

12 LS 4 3.2

Water volume Unit size

No of rows Liters

04 HS 4 2.2

06 HS 4 2.2

08 HS 4 2.6

10 HS 4 2.6

12 HS 4 3.3

14 HS 4 3.8

16 HS 4 3.8

18 HS 4 4.8

20 HS 4 4.8

22 HS 6 7.1

Water volume


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Standard wiring diagram (all sizes)

Legend :

- FMA Fan motor assembly

- LS Low speed- MS Medium speed- HS High speed

7 - Electrical Connections

7.1 - Unit Connection

All units are allowed for being connected on a power supply of230 V 10 % / 1ph / 50 Hz + Earth.

Before undertaking any electrical connection, make sure that the

fan motor is suitable for electrical power supply. Each unit is

provided with an electrical junction block located outside the unit

casing.

All wiring must be done in accordance with applicable electrical

codes and regulations.

Earthing of unit is imperative.

The manufacturer or its representative will not be held responsible

for accidents caused by incorrect or non-existing earthing.

7.3 - Electric Heater

The factory mounted electric heater is fitted with a manual resethigh temperature cut-out switch which de-energizes the heater incase of fan motor failure.

For electrical connection, refer to wiring diagram sticked on theunit.

7.2 - Controls

Caution !

The electric heater must never operate without theventilation.

The standard units are supplied without any controls.

A manual fan speed selector switch or remote control thermostatcan be supplied as option. However, they must control one unitonly.


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10 - Maintenance

It is recommended to proceed to the following maintenance worksin order to ensure a good operation of the unit.

Caution !

Before performing any maintenance operation, disconnect the

unit main power supply.

10.1 - Air Filter

Check the filter clogging periodically. If necessary, clean it orreplace it.

The periodicity of replacement depends on specific conditions of

operation.

Some applications, such as hotels where there is a lot of lints, callmore frequent for a filter replacement.

It is suggested that the filter be checked every 30 days during thefirst year of operation to determine the necessary periodicity.

To remove the filter, just unscrew the holding panel (see ref. 1 onfigure opposite).

8 - Preliminary Checks Before Start-up

1. Make sure that system piping has been cleaned and all the air

has been purged, before starting up the unit.

2. Check that condensate drain pipe is connected and allowscorrect drainage.

3. Ensure that air filter is clean and properly installed.

4. Make certain that fan rotates freely.

5. Make sure that all water and electrical connections are properly

tightened.

9 - Operation

The unit operation is carried out differently according to the selected

control option.

On the CTIVA remote control (figure opposite), it is controlled by :

1) An "I / O" on - off switch,

2) A manual fan speed selector materialized by a "Turbine"symbol :

Digit "1" means low speed,

Digit "2" means medium speed,Digit "3" means high speed,

3) A thermostat to regulate and maintain the desired room

temperature,

4) A summer / winter manual changeover materialized by a "Sunand Snow" symbol, to obtain an operating mode in cooling("Snow" symbol) or heating ("Sun" symbol).

0

15

10

30C

25

1

2

3

I O

20

CTIVA remote control

10.2 - Condensate Pan

The condensate pan must be checked periodically to make surethat drain piping is not obstructed.

If required, it must be cleaned and rinsed.

To get access to condensate pan, remove the bottom panel

(ref. 2 on figure opposite) by disengaging the clips which hold it.

10.3 - Coils

Check that coil fins are not clogged or damaged.

To avoid mouldiness of coils caused by an accumulation of fine

dusts, it is recommended to clean them frequently. If necessary,comb the coil fins with an appropriate tool.

To dismount the coil, remove the bottom panel (ref. 2 on figureopposite) by disengaging the clips which hold it. Then, remove the

screws located at both sides of the unit casing (ref. 3).


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10.5 - Electrical Connections

Re-tighten periodically the electrical connections.

10 - Maintenance (cont'd)

10.6 - Water Piping System

Once a year, drain the piping system and check the furring-up ofthe pipes.

Caution !

The use of non treated or inappropriate water leads to anexcessive fouling inside the tubes of chilled or hot water coils(accumulation of soil, sludge, corrosion, etc.), with significantrepercussions on unit heat efficiency and permanent damages

on material.

The constructor or its representative cannot be held responsiblefor the use of non treated or incorrectly treated water.

Caution !

If water piping is exposed to temperature lower than 0 C, takenecessary precautions (drainage, antifreeze, etc.) to avoidcoil freezing. All addition of antifreeze in the system reduces its

capacity. To keep it unchanged, drain the system before re-starting it up.

10.4 - Fan Motor Assembly

There is no particular maintenance on fan motor assembly. TheVHN fan coil units are equipped with permanently lubricated fanmotor bearings. However, during periodic maintenance, checkthat fan wheel rotates freely without any friction.

If the fan motor overload protection is engaged, wait for safety

automatic reset and try to find out the cause of overload protectionengagement.

To dismount the fan motor assembly, remove the bottom panel

(ref. 2 on figure above) by disengaging the clips which hold it.Then, remove the screws located on top and sides of the unitcasing (ref. 4).

Internal component removal


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11 - Notes


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Your distributor :

With a concern for a constant improvement, our products can be modified without notice. Photos non contractual.

Wesper S.A. - 42 cours Jean-Jaurs - 17800 Pons - France - Tel : 33-5 46 92 33 33 - Fax : 33-5 46 91 26 44 - www.wesper.com

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VCV Wesper

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