System air TG-KH/PT1000 Bedienungsanleitung

Installation instruction EN

Pre-heater for Topvex

Table of contents

1 Introduction .......................................................... 1

1.1 Product description ......................................1

1.2 Intended use ..............................................1

1.3 Product overview CB....................................1

1.4 Product overview RB....................................1

1.5 Product overview TG-KH/PT1000 ...................2

2 Safety .................................................................2

2.1 Safety definitions......................................... 2

3 Installation............................................................2

3.1 To do before installation of the product .............2

3.2 To install the pre-heater ................................2

3.3 To use the manual overheat reset ................... 3

4 Wiring diagram CU27 ............................................. 4

5 Wiring diagram CU283............................................5

6 For Topvex with Access control system from sw 4.

X.......................................................................6

6.1 To set up the pre-heating function ................... 6

6.2 To activate the pre-heating function ................. 6

6.3 To configure the pre-heater............................6

6.4 To allocate the pre-heater.............................. 7

6.5 Operation settings .......................................7

6.6 To save commissioning settings...................... 8

7 For Topvex with control system sw 3.X .......................9

7.1 To set up pre-heating function ........................9

1 Introduction

1.1 Product description

The product is a pre-heater and duct sensor which is in-

tended for use together with Topvex counterflow units.

1.2 Intended use

The product is used for compensation of heating capacity

and protection against icing in the heat exchanger.

The product is intended for installation together with Topvex

air handling units in ventilation systems with circular or rec-

tangular ducts.

The maximum ambient temperature for the pre-heater is 30

° C.

The maximum temperature of the output air is 50 °C.

1.3 Product overview CB

1. Heating rods

2. Name plate

3. Overheat protection reset button

4. Duct joints with rubber rings

1.4 Product overview RB

1. Electric cabinet

2. Air flow direction arrow

3. Name plate

4. Manual overheat protection reset button

5. Casing

1.5 Product overview TG-KH/PT1000

1. Cable gland

2. Sensor probe

3. Mounting bracket

2 Safety

Warning

Set the installed safety switch in the OFF

position before you do the maintenance

unless the instructions tell you differently.

Make sure that the safety switch is not

accidentally set in the ON position.

The heater is S-marked, CE-marked, EMC-marked and

designed in accordance with SEMKO 111 FA 1982 / EN

61000-6-2.

2.1 Safety definitions

Warnings, cautions and notes are used to point out specially

important parts of the manual.

Warning

If you do not obey these instructions,

there is a risk of death or injury.

Caution

If you do not obey these instructions,

there is a risk of damage to the product,

other materials or the adjacent area.

Note:

Information that is necessary in a given situation.

3 Installation

3.1 To do before installation of

the product

• Make sure that the pre-heater is connected to the power

supply with a fixed round cable and that all cable glands

are tight against the cables to prevent leaks.

• Make sure that the airflow through the heater cannot be

lower than 1,5 m/s when the pre-heater is in operation.

• Make sure that the air is filtered to make sure there is no

contamination of the airflow sensor.

• Make sure that there is enough room for installation, re-

placement and inspection in the installation location.

3.2 To install the pre-heater

Warning

Minimum distance from the heater to

combustible material must be 30 mm.

Warning

Make sure that it is not possible to touch

the heating element when the product is

in operation.

1Install the pre-heater in the duct with a minimum of 2 x

the duct diameter from a duct bend, filter unit, or other

objects that can cause turbulence in the airflow.

For products with circular duct connections, do these

steps:

a. Put the duct on the duct joint of duct heater. Pull the

duct over the rubber rings on the duct joint on duct

heater.

b. Use self drilling screws to attach the duct to the duct

joint.

For products with rectangular duct connections, do these

steps:

a. Install the pre-heater on the duct using guide rails.

Guide rails are not supplied by Systemair.

b. Put fireproof insulation on the pre-heater in accord-

ance with local regulations for ventilation ducts.

2Install the supplied duct sensor (1) in the duct.

a. Use a drill to make a hole for the supplied sensor in

the outdoor air duct.

b. Make sure that the distance between the hole and

the pre-heater (2) is minimum 1.5 m.

c. Put the sensor in the hole, adjust the length and at-

tach the sensor with the supplied screws.

3.3 To use the manual overheat

reset

Warning

Do not touch the heater, there is a risk of

injury.

The duct heater is equipped with manual overheating reset.

The overheat protection is designed to prevent overheating

when the airflow is too low, or if there is a fault in the system.

If the manual overheat protection is released, do these steps:

1Turn off the power supply and wait until the heater is cool.

2Investigate the reason for the released overheat

protection.

3When the problem has been removed, push the over-

heat protection reset button, refer to 1.3 Product over-

view CB and 1.4 Product overview RB.

4 Wiring diagram CU27

0V 9

AO4

REF

DI6

REF

UI4

T74

T27T84

400V 3N~

Wiring diagram for CU27 (1), CB (2). Outdoor air sensor (3)

0V G0

AO4

REF

DI6

REF

UI4

T74

T27T84

400V 3N~

1 2

Wiring diagram for CU27 (1), RB (2). Outdoor air sensor (3)

5 Wiring diagram CU283

B60

A61

N62

E63

BU B50

OR A51

GN N52

A01

DI1

AI1

400V 3N~

321

Wiring diagram for control unit (1), expansion module CEM15 (2) and CB pre-heater (3). Outdoor air sensor (4)

B60

A61

N62

E63

BU B50

OR A51

GN N52

BN G

AO1

DI1

AI1

400V 3N~

321

Wiring diagram for control unit (1), expansion module CEM15 (2) and RB pre-heater (3). Outdoor air sensor (4)

6 For Topvex with Access

control system from sw 4.

6.1 To set up the pre-heating function

Service

0612

6.2 To activate the pre-heating function

Select Yes as Pre-heater in the list of available functions in

the Configuration > Functions > Function activation menu.

Configuration > Functions > Function activation 2023-11-20

Preheater Yes

6.3 To configure the pre-heater

Configure the preheater and its running mode in the Configu-

ration > Functions > Preheater menu.

Select When defrosting to maintain supply air temperature at

desired level only during by-pass defrosting (Pressure

monitoring).

Select Unit running if preheater is used to prevent icing in the

exchanger or to support section defrosting or heating ca-

pacity in very cold climates.

Configuration > Functions > Preheater 2023-11-20

Preheater function Preheater

Type of preheater Electric

Preheater temperature sensor Preheater temperature

Start/Stop function When defrosting, Unit running

Type of feedback Alarm

6.4 To allocate the pre-heater

Configuration > I/O allocation settings

Select I/O placement for the connected temperature sensor

and control signals to and from the electric heater in the Con-

figuration > I/O allocation settings submenus.

Do not use the same in- or output for several functions.

Configuration > I/O allocation settings > Analog inputs 2023-11-20

Analog inputs Device Position

Intake air temperature Controller AI4

Preheater temperature PDT2 UI1

Configuration > I/O allocation settings > Digital inputs 2023-11-20

Digital inputs Device Position

Feedback preheater Controller DI6

Configuration > ... > Digital inputs> Feedback preheater 2023-11-20

Name Feedback preheater

Original name Feedback preheater

Contact function Normally closed

Configuration > I/O allocation settings > Analog outputs 2023-11-20

Analog outputs Device Position

Preheater Controller AO4

6.5 Operation settings

Data & Settings > Temperature control > Preheater

Adjust the pre-heater temperature set point in the Data & Settings > Temperature control > Preheater menu

When defrosting:

To maintain a supply temperature during by-pass defrosting, the pre-heater need to compensate for the missing heating ca-

pacity. For example, if the correct supply air temperature is 22 °C, but the heating capacity is only 10 °K, the pre-heater set-

point need to be 12 °C.

Unit running:

Example A: To prevent any ice build-up in the exchanger the pre-heater setpoint need to be 0 °C.

Example B: In very cold climates the pre-heater setpoint need to equal the outdoor temperature used for dimensioning the air

handling unit’s heating capacity. For example, if the unit is dimensioned for outdoor temperatures down to -18 °C but outdoor

temperatures in the location is lower, the pre-heater setpoint need to be -18 °C.

Data & Settings > Temperature control > Preheater 2023-11-20

Setpoint preheater -18 °C

6.6 To save commissioning settings

When the installation is complete and all functions are tested, Systemair recommends to save a local backup of the current

configuration in the control unit.

Select Yes on Save commissioning settings in Configuration > System settings > Save and restore settings.

Configuration > System settings > Save and restore settings 2023-11-20

Save commissioning settings Yes

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