HELIOS KWL-Center 1200 Operation And Installation Instructions

Brand: HELIOS

Model: KWL-Center 1200

Category: Cooker hoods

Type: Operation And Installation Instructions

Operation and installation instructions no. 90728

Central ventilation with heat recovery unit KWL-Center 1200

It is important for safety reasons, that you read and observe this instruction

fully before proceeding.

RECEIPT

Please check delivery immediately on receipt for accuracy and damage, please

notifiy carrier immediately. In case of delayed notification, any possible claim may

be void.

STORAGE

When storing for a prolonged time the following steps are to be taken to avoid da-

maging influences: protection by dry air and dustproof packing (plastic bags with

drying agent and moisture indicators). The storage area must be free of water,

vibration and temperature variations.

When storing for several years or non rotation of motor an inspection of the bea-

rings with possible relubrication and an installation inspection in accordance with

VDE 0530 are absolutely necessary before starting operation. Damages due to

improper storage, transportation or installation are not liable for warranty.

OPERATION / USE

The unit is designed for the central ventilation of residential and commercial used

rooms. The unit is equipped with a heat recovery battery. It must not be connec-

ted to kitchen hoods or laboratory extract fans. The standard equipment allows a

working temperature range from -20°C up to 40°C. For operation under difficult

conditions, e.g. high humidity, long periods of standstill, high air pollution or

through climatic (e.g. operating temperature over 40°C), technical or electronic in-

fluences other than standard operations may not be suitable. For this reason plea-

se enquire and obtain operation release. A release by a third party is not valid.

MODE OF ACTION

In the heat exchanger the cold outside air and the warm extracted air "crosses

over " without touching. Through this method approx. 70% of the energy of the

warm air is tranfered to the incoming air. Additionally a thermostat controlled hea-

ting element warms up the inlet air (in extreme cold weather conditions) to the re-

quired temperature. The intake air is directed to the primary rooms, where intake

air is required, through pipes and valves. The used air is extracted from the ba-

throoms, toilets and kitchens. It flows back to the fan via the ducting systems,

transfering heat before being released into the open air.

PERFORMANCE DATA

To achieve the given performance, the unit must be correctly installed. Varying

from the design and/or by bad construction and also by incorrect operation can

lead to a reduction in the discharge capacity. Noise figures are stated as sound

power levels LWA in dB(A) (conforms to DIN 44635 T.1). Sound pressure levels

LPA depend on room specific attitudes.

INSTALLATION-ASSEMBLY (pic. 2)

The KWLC 1200 is to install vertical. As an "undercover" we recommend plaster of

chipboard on a secure mineral wool board (approx. 70 x 190 cm). The board must

be even. The KWLC has differently high consoles so that an incline arises in direc-

tion of the condensate waterflow.

The mounting of the same should use the shortest possible pipework and should

be easy to connect up. Tight bends can lead to a high pressure loss and flow noi-

se. The ductwork must not be bent. A secure and tight connection of the duct-

work has to be assured. For maintenance and installation work, the unit must be

reachable.

Before installation, take out summer-heat exchanger and operating switch

from the unit. It must be checked that the installed unit has a drop in the di-

rection of the condensate water flow.

– Condensation Run-Off

The condensation spout is to be connected to the water run off by means of a

flexible pipe of 15mm diameter. If the same is not in a room which is heated, it

must be isolated. A copper drain trap is to be provided. It must have a minimum

height of 100 mm, otherwise water could be sucked back through the fan.

To avoid an odor, fill in water into the drain trap before putting into operati-

on. The regulations of the water board and other legislation must be obser-

ved.

– Air ducting, Ventilation circuit

When designing the ductwork, try to achieve the shortest possible runs. To avoid

the collecting of dirt, pressure loss and noise, use smooth pipes (plastic or rigid

ducting). For main pipes (outside air, extract air, inlet air, discharge collection) a

diameter 315 mm has to be used, for side pipes an appropriate reduction of the

diameter. To reduce condensation in the extract pipes, the ducting has to be isola-

ted where appropriate. Also if inlet and extract ductwork cross unheated rooms

isolation must be provided to reduce heat losses.

Fresh air should be taken into primary rooms, extraction takes place in secondary

rooms. To regulate the whole system use adjustable valves (HELIOS-valves). The

opening for the kitchen extract needs a filter. A kitchen hood must not be connec-

ted up (danger of grease build-up). There must be enough air flow facilities (e.g.

door grilles) within the building to guarantee air flow between intake rooms and

extract rooms.

Fire and building regulations must be observed.

– Thermal humidistat

This thermal humidistat works all-electronic and has a sensor which is installed in

the heat exchanger to measure the degree of humidity. Is the degree of humidity

low, the thermal humidistat will switch off the function of the frost protection and

the unit continues its normal work. In addition, the thermal humidistat contains an

electronic thermostat, which controls the function of the frost protection, when

there is a higher degree of humidity. The sensor is installed in the “cold corner“

and thus measures the temperature correctly in a optimum position. The compo-

nents are provided with a voltage of 24 V.

– Electrical connections (pic. 5)

Electrical connection may only be carried out by a qualified person. All work only

in disconnected state. An appliance is required for cut off from the mains with a

minimum of 3 mm contact opening of each pole.

All relevant safety and installation regulations (for example DIN VDE 0100) as well

as TAB of EVK's are to be adhered.

Electrical connections are to be made according to wiring diagram.

TECHNICAL DATA

voltage 3~, 400 V, 50 Hz

current 16 A

connecting cable 5 x 2,5 mm2

dimensions (LxWxH) 1700 x 634 x 1055 mm

condensate waterflow outside ∅15mm, spigot ∅ 315 mm

motor power 670 W

heater power 6 kW

OPERATION - ADJUSTMENT

The KWLC is controlled with an operator device with 2 switches. The 3 speed step

switch controls the fan speed.

Speed step 1 Basic air flow, for less intake air needs

Speed step 2 Normal air flow

Speed step 3 Full R.P.M., for maximum intake air needs

The switch control light operates when the heating coil is on. Speed step 2 (or air

flow volume) of the unit can be adjusted to the size of the rooms to be ventilated.

All servicing when electrically isolated. Therefore the electric connection room (10)

of the unit has to be opend.

Therefore open up the terminal box of the unit and change the marked speed step

2 wire at the transformer in the unit according the wiring diagram.

Attention: For good room conditions and to reduce condensation water dama-

ges, the unit should not be completely switched off, except when servicing / main-

tenance or by breakdown.

– Regulating the electric heater battery

The electric heater battery is controlled by a thermostat (1) on the KWLC and by the

on/off switch (S2) on the operator device.

With the thermostat the desired temperature of the intake air is adjusted in intake air

spigot. The thermostat is factory set at 15° C.

1) On/Off switch at operator device 15 set to „Ein“:

If the temperature of the intake air drops in the intake air spigot under the adjusted

temperature at the thermostat the electric heater battery is switched in automatically.

2) On/Off switch at operator device is set to „Aus“:

The electric heater battery remains turned off even if the temperature of the intake

air drops under the adjusted temperature at the thermostat in the intake air spigot.

Attention: The temperature sensor is located in the intake spigot. When intake

ductwork are laid through cold areas, heat loss on the way to the valve must

be considered. A control light in the 3 step switch indicates use of the heater bat-

tery (7).

The heater is protected against overheating by a thermal overload thermostat. It

switches off automatically when the temperature of 55° C has been reached and

restarts after cooling. As an additional safety control, a second thermostat switches

off the whole unit, if a temperature of 80° C is exceeded. The thermostat can be

manually re-set by pressing the red push button, which is accessible by removing

the red push button, which is accessible has to be investigated and remedial action

is to be taken

– Frost Protection of the Heat Exchanger Unit

A thermal humidistat avoids ice build up on the heat exchanger unit of the KWLC.

This sensor controls the intake air fan so that ice cannot build up. Warm air e.g.

from the bathroom contains high humidity and therefore it is very likely that con-

densation occurs. Therefore the temperature in the heat exchanger must not drop

too low that water freezes in it. The thermal hunidistat controls the hunidity of the

air. In addition he measures the temperature of the heat exchanger unit. In case of

frost danger and high humidity in the heat exchanger the speed of the intake air

fan is reduced and the bypass flap opens simultaneously to the protection of the

heat exchanger unit. The lower speed of the intake air fan as well as the open by-

pass flap remain unchanged until the heat exchander has warmed itself sufficient-

ly. In case of frost danger und dry air in the heat exchanger the KWLC keeps its

adjusted operating state ( no reduced output)

– Summer Service (pic. 3)

During the warmer months (apart from the heating period) it is not necessary to re-

cover heat. If the temperature at the summer thermostat at the outside air spigot

increases above the adjusted temperature (e.g. 17°C) the bypass flap will open

and let the air flow through.

Attention: The thermostat of the additional heating (1) and a possible separate

room thermostat have to be set to "0" to avoid unnecessary waste of energy.

MAINTENANCE

All servicing when electrically isolated.

- Opening of doors (pic. 3)

Open all claims (14). Then remove the door completely (12/13). Set the door back

in reverse order.

Attention: The unit has a door on both sides so that entry can be made through

the side required.

- Filter

The unit comes with several filters:

• Outside air/Extract air: fine filter F5 Ref.no. 0179

The outside and the extract pre filter are to be changed or cleaned at least every

three months. The fine filter should be replaced at least after 1 year of use for hy-

gienic reasons. When replacing the filter the correct air flow direction through the

filter has to be observed. When the outside air is very dirty an air filter box (LFBR

315) should be fitted in the ductwork and the filter should be cleaned or replaced

frequently.

- Filter control (pic. 3)

To control the filter automatically, two differential pressure switches are connected

to the KWLC. Is the filter dirty, the control lamp of the filter at the operator device

will light up.

- Fans

The fans are to be maintained and cleaned every 12 months at least. For cleaning

use a small brush and an oil free cleaning fluid. Make sure that no water gets into

the motor. Fan must be completely dry before re-mounting. To dismantle the fan,

unplug the electrical plug-socket facility (pic.3)

- Heat recovery battery

To be cleaned at least twice a year. Pull out the unit carefully. For cleaning put in

warm soapy water (do not use cleaning fluid containing Natriumcarbonate) and fi-

nally clean with warm water. When re-assembling ensure correct installation.

- Valves: To be cleaned at least annually.

- Outer grilles: Check yearly that grilles are free from leaves etc.

SOURES OF MALFUNCTIONING (pic. 3)

– No air flow

• Check electrical connection / fuses

• The overheating thermostat (2) may have tripped. Remove white plastic cap

and press red button.

• The unit can be dirty

• Filters (5) could be dirty. Change or clean them (see maintenance)

Operation and installation instructions no. 90728

Central ventilation with heat recovery unit KWL-Center 1200

– Inlet air is cold

• Set heater thermostat (1) to a higher temperature

• Ductwork in cold areas need extra isolation

•

Make sure that summer-insert was changed against the heater recovery battery.

• Check if overheating thermostat of the heater has tripped. Press red reset but-

ton (2).

If any of the mentioned points do not help please contact HELIOS. Please state

serial number given on the rating plate which is near the thermostat of the heating

coil. Do not try to repair the unit yourself.

ACCESSORIES

The use of accessories not offered or recommended by HELIOS will make the gu-

arantee invalid. The use of an electronic speed or transformer speed controller is

not permitted.

WARRANTY

If the preceding instructions are not observed all warranty claims and accommodati-

on treatment are excluded. The Helios warranty is limited to the material and work-

manship of the product.

CERTIFICATES

When installed correctly and used for its intended purpose, the

product complies with applicable European standards and regulations at date of ma-

nufacture.

Ein

Aus

Filter

3-step

switch (S1)

control lamp

of fan

control lamp of

electric heater bat-

tery

control lamp of

filter control

on-/off-switch of

electric heater

battery (S2)

pic. 1

operator device

Operation and installation instructions no. 90728

Central ventilation with heat recovery unit KWL-Center 1200

pic. 2

pic. 3

1 thermostat for heater battery

2 overheating thermostat

3 thermal humidistat

4 condensation run-off

5 fine filter F7

6 summer thermostat

73x2000 W elecrical heater battery

8 intake air fan

9 extract air fan

10 electrical terminal box

11 heat exchanger

12 left door

13 right door

14 claim

15 DDS-switch for filter control

16 bypass-flap

17 fuse 2x

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Operation and installation instructions no. 90728

Central ventilation with heat recovery unit KWL-Center 1200

Druckschrift-Nr. 90 728 / 06.03

Service und Information

DHELIOS Ventilatoren GmbH & Co · Lupfenstraße 8 · 78056 VS-Schwenningen FHELIOS Ventilateurs · Z.I. La Fosse à la Barbière · 2, rue Louis Saillant · 93605 Aulnay sous Bois Cedex

CH HELIOS Ventilatoren AG · Steinackerstraße 36 · 8902 Urdorf / Zürich GB HELIOS Ventilation Systems Ltd. · 5 Crown Gate · Wyncolls Road · Severalls Industrial Park ·

AHELIOS Ventilatoren · Postfach 854 · Siemensstraße 15 · 6023 Innsbruck Colchester · Essex · CO4 9HZ

5 x 2,5 mm²

400V 16A 50Hz

KWLC 1200 SEH ab/from/à partir Ver.6294

H1 H2 H3

S2 -

Heizung /

Heater / Chauffage

Ein - Aus

on - off

marche - arrêt

H1 - KWLC Ein / On / Marche