TOPVEX FC OPERATING MAINTENANCE 125918A003
Table Of Contents
- 1 Warnings
- 2 Product Description
- 3 Interface Description
- 4 Commissioning
- 5 Maintenance
- 5.1 Important
- 5.2 Maintenance intervals
- 5.3 Maintenance instructions
- 5.3.1 Open the doors
- 5.3.2 Changing Supply/Extract air filter
- 5.3.3 Checking the heat exchanger
- 5.3.4 Checking the fans
- 5.3.5 Checking the Hot water heating battery
- 5.3.6 Checking the Electrical heating battery
- 5.3.7 Cleaning the extract louvers and inlet diffusers
- 5.3.8 Checking the outdoor air intake
- 5.3.9 Checking the duct system
- 5.3.10 Changing the Internal Battery
- 6 Troubleshooting
- 7 Service
Product Description |
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2.2.2 Supply and Extract air Filters
The filters are of bag filter type with filter quality F7 for the supply air filter and M5 for the extract air filter. The filters
need to be replaced when polluted. New filters can be acquired from your installer or wholesaler.
2.2.2.1 Pressure guard for filters
A pressure guard measures the differential pressure over the supply and extract air filters (pos. 9 figure 1. When the
pressure drop reaches the set value an alarm is triggered in the main regulator. The differential pressure can be set be-
tween 40 and 300 Pa. The pressure switch is preset from factory to 240 Pa.
2.2.3 Heat Exchanger
Topvex FC models are equipped with a counter flow heat exchanger and a by-pass damper. The operation of the by-
pass damper is automatic and depends on the set temperature or if deicing is in operation.
The heat exchanger is removable for cleaning and maintenance, see chapter 5 for more information.
2.2.4 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
In Topvex FC all temperature sensors are mounted and wired inside the unit except for the supply air sensor, which 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.
2.2.5 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.
2.2.6 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 electrical heating battery has both automatic and manual overheating protection. The
manual overheat protection is reset by pushing the red button on top of the electrical heater frame (pos. 11 figure 1).
The power demand of the electric heating coil is controlled by the main regulator, which controls the heat steplessly by
a TTC triac control according to the selected control function that is set in the control panel.
Danger
• Make sure that the Mains supply 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.
2.3 Internal components Electrical connection box
Danger
• Make sure that the Mains supply 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 FC are equipped with a built in regulator and internal wiring (figure 1).
125918 | A003