System air Topvex SR04 Installation guide

Document in original language | 124455 · A003

Topvex SR/TR03, SR/TR04, SR/TR06

Compact Air Handling Unit

Operation and Maintenance Instructions GB

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E&OE

Systemair AB reserves the rights to alter their products without notice.

This also applies to products already ordered, as long as it does not affect the previously agreed specifications.

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Contents

1 Warnings.......................................................1

2 Product description..........................................2

2.1 Internal components Topvex SR 03-

06.......................................................2

2.2 Internal components Topvex TR 03-

06.......................................................3

2.3 Description of internal components ............4

2.3.1 Supply and extract air

fans ........................................4

2.3.2 Pressure sensor fans...................4

2.3.3 Supply and extract air

filters.......................................4

2.3.4 Pressure guard for filters..............4

2.3.5 Heat exchanger .........................4

2.3.6 Rotor motor ..............................4

2.3.7 Rotation guard...........................4

2.3.8 Temperature sensors ..................4

2.3.9 Water heating battery .................4

2.3.10 Electrical heater .........................5

2.4 Internal components electrical

connection box ......................................5

3 Interface description ........................................6

3.1 Control panel.........................................6

3.1.1 Operating the control

panel.......................................7

3.1.2 Navigating the menus .................7

4 Commissioning ...............................................7

4.1 Before starting the system .......................7

4.2 Initial setup of the unit.............................8

4.3 Menu overview .....................................9

4.4 Free cooling description .... ... ... ... ... .... ... .. 21

5 Maintenance .. ... ... ...... ... ... ... .... ... ... ...... ... ... ... 22

5.1 Important ........................................... 22

5.2 Maintenance intervals ........................... 22

5.3 Maintenance instructions ....................... 22

5.3.1 Changing supply/extract air

filter ............................. ..... .... 22

5.3.2 Checking the rotating heat

exchanger .............................. 23

5.3.3 Checking the fans..................... 23

5.3.4 Checking the hot water

heating battery........................ 23

5.3.5 Checking the electrical heating

battery .................................. 23

5.3.6 Cleaning the extract louvres

and inlet diffusers..................... 24

5.3.7 Checking the outdoor air

intake....................................24

5.3.8 Checking the duct

system .................................. 24

5.3.9 Changing the internal

battery .................................. 24

6 Troubleshooting............................................ 25

6.1 Alarms...............................................25

7 Service .......................................................26

Warnings |1

1 Warnings

The following admonitions will be presented in the different sections of the document:

Danger

Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or

serious injury.

Warning

Indicates a potentially hazardous situation that may result in minor or moderate injuries.

Caution

Indicates a risk of damaging the product or prevent optimal operation.

Important

• This appliance can be used by children aged from 8 years and above and persons with reduced physical,

sensory or mental capabilities or lack of experience and knowledge if they have been given supervision

or instruction concerning use of the appliance in a safe way and understand the hazards involved.

• Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children

without supervision.

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2| Product description

2 Product description

2.1 Internal components Topvex SR 03-06

Fig. 1 Internal components with air connections symbols (Drawn as a right hand unit)

Position Description Symbol

AConnection supply air

BConnection exhaust air

CConnection outdoor air

D Connection extract air

1Fan supply air

2 Fan extract air

3Filter supply air

4Filter extract air

5Heat exchanger

6 Rotor motor

7Rotation guard (sensor)

8Extra driving belt

9Pressure sensor supply air/extract air filter

10 Pressure sensor extract air fan/supply air filter

11 Temp. sensor outdoor air

12 Temp. sensor extract air

13 Temp. sensor exhaust air

14 Electrical re-heater battery

15 Electrical connection box

1Only valid for units with electrical re-heater battery

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Product description | 3

2.2 Internal components Topvex TR 03-06

Fig. 2 Internal components with air connection symbols (Drawn as a left hand unit)

Position Description Symbol

AConnection supply air

BConnection exhaust air

CConnection outdoor air

D Connection extract air

1Fan supply air

2 Fan extract air

3Filter supply air

4Filter extract air

5Heat exchanger

6 Rotor motor

7Rotation guard

8Extra driving belt

9Pressure sensor supply air fan/extract air filter

10 Pressure sensor extract air fan/supply air filter

11 Temp. sensor extract air

12 Temp. sensor supply air

13 Temp. sensor outdoor air

14 Temp. sensor exhaust air

13 Electrical connection box

14 Electrical re-heater battery

1Only valid for units with electrical re-heater battery

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4| Product description

2.3 Description of internal components

2.3.1 Supply and extract air fans

The fans have external rotor motors of EC type which are steplessly controlled individually by setting the control signal

to a fixed value. It is possible to program the speed in 2 steps (normal/reduced) depending on the programming of the

week schedule. The motor bearings are life time lubricated and maintenance free. It is possible to remove the fans for

cleaning, see chapter 5 for more information.

2.3.2 Pressure sensor fans

2 pressure sensors maintain the airflow at a constant level by measuring the differential pressure over the inlet cone of

the fan impellers (pos.10 figure 1, pos.10 figure 2). The pressure sensors are installed from factory in all CAV units. VAV

control of the fans is available as an accessory. The VAV accessory kit includes two pressure sensors, tubes, electrical

cables and instruction on how to connect to the air handling unit and set-up the controller. See also “Installation instruc-

tions” for more information concerning VAV installations.

2.3.3 Supply and extract air filters

The filters are of bag filter type with filter quality F7 for the supply air filter and F5 for the extract air filter. The filters

need to be replaced when polluted. New sets of filters can be acquired from your installer or wholesaler.

2.3.4 Pressure guard for filters

A pressure guard measures the differential pressure over the supply and extract air filters (pos.9 figure 1,figure 2).

When the pressure drop reaches the set value an alarm is triggered in the main regulator. The differential pressure can

be set between 40 and 300 Pa. The pressure switch is preset from factory to 240 Pa.

2.3.5 Heat exchanger

Topvex SR/TR models are equipped with a highly efficient, belt driven, rotating aluminium heat exchanger. Required

supply air temperature is therefore normally maintained without adding additional heat. The operation of the heat ex-

changer is automatic and depends on the set temperature. An extra driving belt is included on the rotor on delivery

(pos. 8 figure 1 and figure 2).

The heat exchanger is removable for cleaning and maintenance, see chapter 5 for more information.

2.3.6 Rotor motor

The rotor motor drives the exchanger rotor with a variable rpm as long as there is a heat demand. The motor is con-

trolled by an analogue 0-10V control signal (figure 1 and figure 2).

2.3.7 Rotation guard

A sensor registers the rotation of the heat exchanger rotor. It’s connected by the rotor to the main regulator which

gives an alarm if the rotor stops while there is a heat demand (pos.7 figure 1 and figure 2).

2.3.8 Temperature sensors

4 temperature sensors (PT1000) are included in the unit from factory:

• Supply air sensor

• Extract air sensor

• Outdoor air sensor

• Exhaust air sensor

In Topvex TR 03-06 all temperature sensors are mounted and wired inside the unit. In Topvex SR 03-06 the supply air

sensor is loosely delivered with the unit and needs to be installed in the supply air duct externally from the unit. See In-

stallation instructions for more detailed information.

2.3.9 Water heating battery

In units with built in water heating battery the hot water coil is located next to the supply air connection. The hot water

coil can be either HWL (hot water coil, low power) or HWH (hot water coil, high power). The coil material is copper pip-

ing with a frame of galvanized sheet steel and aluminium fins. The coil is equipped with venting and immersion sensor

for frost protection.

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Product description | 5

2.3.10 Electrical heater

In units with built in electrical heater the heating rods are located after the supply air fan in the airflow direction. The

material is stainless steel. The electric heating coil has both automatic and manual overheating protection. The manual

overheat protection is reset by pushing the red button on the side of the electrical heater frame by the use of a pointed

tool (figure 3). The power demand of the electric heating coil is controlled by the main regulator, which controls the

heat according to the desired supply/extract or room air temperature that is set in the control panel.

Danger

• Make sure that the mains to the unit is disconnected before performing any maintenance or electrical

work!

• All electrical connections must be carried out by an authorized installer and in accordance with local rules

and regulations.

Fig. 3 Reset of the manual over heat protection in Topvex SR 03-06.

2.4 Internal components electrical connection box

Danger

• Make sure that the mains to the unit is disconnected before performing any maintenance or electrical

work!

• All electrical connections must be carried out by an authorized installer and in accordance with local rules

and regulations.

Topvex SR/TR 03-06 are equipped with a built in regulator and internal wiring (figure 4).

The figure shows the electrical connection box for the Topvex TR 03-06 units. The connection box for the Topvex SR

03-06 has the same layout and components with the difference that the electrical heater is situated in a separate

compartment.

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6| Interface description

Fig. 4 Electric components

Position Description

1Regulator E-28 WEB

2Transformer 230/24V AC

3Terminals for internal and external components

4Terminals for internal wiring

5Terminals for mains supply to the unit

6Contactor (K2) Pump control water (HW units only, not present in EL-units)

7Automatic fuse

8Electric heater frame

9Automatic fuse for heater

10 Contactor (K3) for control of EL heater

11 Thermostat (EL units)

12 Manual over heat protection reset (EL units)

3 Interface description

3.1 Control panel

The SCP control panel is delivered with a 10 m cable (up to 100 m can be used) that is connected to the panel and with

a fast coupling contact, connected to the Topvex unit. The contact is connected to the Corrigo controller in the electrical

connection box. The cable can be unscrewed in the back of the control panel (figure 5).

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