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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© Copyright Systemair AB
All rights reserved
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
1
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
1
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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