FläktGroup EQKK Electric air heater Installation and Maintenance Manual

Brand: FläktGroup

Model: EQKK Electric air heater

Type: Installation and Maintenance Manual

FläktGroup DC_8636GB 20180605_R0 We reserve the right to make changes without prior notice

EQKK ELECTRIC AIR HEATER

MOUNTED IN DUCTWORK

INSTALLATION AND MAINTENANCE INSTRUCTIONS

INSTALLATION

The circular electric heater is designed for connection to a standard

flue duct.

The heater should be fastened to the duct system by

means of self-tapping screws.

Secure the rectangular electric

heater to the ducting by means of screws or slip clamps.

2. The direction of airflow through the air heater should be as

indicated by the arrow (located on the side of the heater, at the

base of the junction box).

The heater can be fitted to horizontal or vertical ducts. The terminal

box should be installed facing upwards, with a maximum

lateral rotation of 90°. The terminal box may NOT be installed facing

downwards.A heater with a rectangular heating element may not be

positioned with the terminal box facing upwards or downwards.

4. The opening to a room must be fitted with a well secured grille or

supply air diffuser serving as a safety guard to prevent physical

contact with the heating elements.

5. A text warning the user not to cover the heater should be placed

immediately near the air discharge opening.

The distance from or to a duct bend, damper, filter etc. should be

equal to at least twice the duct diameter of air ducts. Otherwise there

is a risk that the airflow through the heater will be uneven, which

could cause the thermal overload protection to trip. Example: Conn.

315 mm = > min. 600 mm, conn. 400 mm => min. 800 mm etc. For a

rectangular heater, the safety distance should be equivalent to the

diagonal dimension of the duct. Example: For a 400x300 mm duct,

the safety distance is 500 mm.

7. The heaters may be insulated in accordance with existing rules

for ventilation ducts. The insulation material must be inflammable.

The isolation must not cover the lid, since the rating plate must be

visible and the lid must be removable.

8. The duct section with built-in heat element should be accessible

for exchange and inspection.

The distance between the heater’s sheet metal casing and any wood

or other combustible material nearby MUST be at least 30 mm for

circular heating elements or 100 mm for rectangular elements.

10. Max. permissible ambient temperature for heaters with built-in

controls is 30 °C.

11.

The velocity of the airflow through the air heater must be at least 1.5 m/s

and the output air temperature may not exceed 40°C. Otherwise the

overheating protection will be at risk of tripping.

Heater for rectangular duct connectionHeater with rectangular

elements for ﬂue pipe connection

Electric circular elements for ﬂue

pipe connection

Installation and maintenance instructions

FläktGroup DC_8636GB 20180605_R0 We reserve the right to make changes without prior notice

CODE KEY – AIR HEATER, ELECTRIC, DUCT-MOUNTED

EQKK-aaa-bbb-c-d-e-f-g-h

Width/diameter in cm (aaa)

031 = 31,5

040 = 40

050 = 50

060 = 60

080 = 80

090 = 90

100 = 100

110 = 110

120 = 120

140 = 140

150 = 150

160 = 160

Height in cm (bbb)

000 = circular connection (aaa=031,040,050)

030 = 30 (aaa=050,060)

040 = 40 (aaa=080,090)

050 = 50 (aaa=100,110)

060 = 60 (aaa=120,140)

070 = 70 (aaa=150)

080= 80 (aaa=140,160)

Power version (c)

1,2,3

Construction (d)

1 = 3 x 230 V AC (≤ 3kW =2 x 230 v)

2 = 3 x 400 V AC (≤ 3kW =2 x 400 v)

Mains connection (e)

1 = with thyristor and stepping switch

Control connection (f)

1 = with quick-fit connector

Inspection side (g)

1 = Right or left

Construction version (h)

2 = version 2

Connection size

3 x 400 V 3 x 230 V

(only Norway) Minimum ﬂow

m3/s

Kw/Power version Kw/Power version

1 2 3 1 2 3

ø315mm 3** 6 9 2* 6 9 0.12

ø400mm 4.5 915 4.5 915 0.19

ø500mm 10 17 24 10 17 24 0.37

500 x 300mm 2 5 10 2 5 10 0.23

600 x 300mm 2 5 10 2 5 10 0.27

800 x 400mm 512 24 512 24 0.54

900 x 400mm 512 24 512 24 0.48

1000 x 500mm 512 24 512 24 0.75

1100 x 500mm 12 30 43 12 30 43 0.83

1200 x 600mm 12 30 43 12 30 43 1.08

1400 x 600mm 15 34 54 15 34 54 1.26

1500 x 700mm 15 34 54 15 34 54 1.58

1400 x 800mm 23 48 75 23 48 75 1.68

1600 x 900mm 23 48 75 23 48 75 2.16

* 1x230V

** 2x400V

ELECTRICAL CONNECTIONS

1. The installationworkmust only be carried out by a qualified fitter.

2. The power supply, output and overheating protection data of the duct

air heater is specified in the wiring diagram supplied and can be

read on the rating plate on the lid of the heater.Carefully check that

the data of the air heater agrees with the power supply and control

equipment selected.

3. The air heater should be connected to the mains supply across a

fixed round cable. The cable should be rated to fit the relevant site

and ambient temperature.

4. You should not be able to switch on the current to the elements,

unless the associated fan has started first or at the same time.

5. You should not be able to switch off the current to the associated fan,

unless the current to the elements is first or at the same time

switched off. For outputs in excess of 30 kW we recommend that

the fans continue running for at least 3 minutes before they stop to

ensure that the overheating protections will not trip due to remaining

heat.

6. All-pole switching with a contact clearance of at least 3 mm must be

arranged in the fixed installation.

7. The duct heaters are fabricated toDegree of Protection IP 43.

8. The duct heaters are tested and approved by SEMKO in accordance

with the following:

LVD Directives: EN60355-1, EN60335-2-30, 1-4 and

SEMKO111 FA11982. EMC Directives: EN61000-6-2 and

EN61000-6-3.

The air heaterwith built-in controls aremanufactured in accordance

with the directives above and are tested, approved and CE marked in

accordance with EMC Directives: EN61000-6-2 and EN61000-6-3.

9. The air heater is equipped with two over heating protections (one

of which must be reset manually), designed for preventing

overheating if the airflow is too low and if a malfunction occurs in the

plant.

MAINTENANCE

No maintenance is required except a periodic performance check.

Accessing the duct air heater, such as removing the lid,may only be

done by a qualified fitter.

OVERHEATING

If the overheating protection with manual reset has tripped, the

following should be observed:

1. Switch off the current.Accessing the air heater, such as removing

the lid,may only be done by a qualified fitter.

2. Carefully determinewhy the overheating protection has tripped.

3. After you have corrected the fault, reset the heating protection.

FläktGroup EQKK Electric air heater Installation and Maintenance Manual

FläktGroup EQKK Electric air heater Installation and Maintenance Manual

FläktGroup EQKK Electric air heater Installation and Maintenance Manual

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