SystemAir Topvex SR03 Operation And Maintenance Instruction

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 3 for more information.
2.3.2 Pressure sensor fans/filter
Two pressure sensors are installed (figure 1, figure 2), each of the sensors has two functions. One function is to meas-
ure the differential pressure over the inlet cone of the fan impellers to maintain the airflow at constant level (CAV func-
tion as standard). The other function, is to measure the differential pressure over the supply and extract air filters so
that when the pressure drop reaches the set value, an alarm is triggered in the main regulator, which indicates that the
filter needs to be replaced.
2.3.3 Supply and extract air filters
The filters are of bag filter type with filter quality ePM1 60% (F7) for the supply air filter and ePM10 60% (M5) 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 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 3 for more information.
2.3.5 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).
2.3.6 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).
2.3.7 Switch module
A switch module with HMI and 2 TCP/IP connections is mounted in the heat recovery units. Connection is made through
the panel outlet in the air handling unit (see figure 4).
Note:
24V HMI connection dedicated for the display. The connection is only for HMI and no other
connections is permitted.
2.3.8 Temperature sensor
4 temperature sensors (PT1000) are included in the unit from factory. The sensors are as follows:
• Supply air sensor
• Extract air temperature sensor
• Outdoor air temperature sensor
• Efficiency temperature sensor
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 Installation instructions for more information.
151618 | A002

SystemAir Topvex SR03 Specifications

General

Brand	SystemAir
Model	Topvex SR03
Category	Air Handlers
Language	English