There’s still ample time to make the necessary winter preparations for your building. By checking and fixing the basic building automation systems you can avoid problems and at the same time improve the energy efficiency of the building.
‘Annual checking of the core technologies in a building – heating, lighting, plumbing, air-conditioning – helps you save money in the form of reduced operating costs. Simple maintenance measures can reduce your energy consumption by as much as 10–20%,’ says Jorma Hentilä, Sales Manager at Caverion.
Housing companies should invest in energy efficiency. In addition to carrying out preventive service and maintenance, you can effectively reduce your energy consumption by installing an exhaust air heat pump in your building. The heat in the exhaust air is recovered and used for heating the supply air or hot tap water. The system has a 6-year payback period and it has been used in residential blocks of flats with convincing results. With an exhaust air heat pump, you can reduce the energy consumption by up to 40%.
Caverion’s checklist for winter
- Check outdoor lighting. Replace lamps, clean globes and reflectors.
- Clean the rain gutters and roof drains to prevent melting snow from causing damage in the spring.
- Check the operation and settings of thawing systems in ramps and other pathways. Often, these have been manually switched off for the summer.
- Check heating system expansion vessels, network pressures and valves. Bleed the networks and do not forget to refill after bleeding.
- Adjust the heating control curves.
- Check the heat recovery equipment and related dampers, disks, belts, pumps and pressures.
- Regularly check the concentrations in glycol-filled networks. Too much glycol decreases the efficiency and too little glycol may result in freezing.
- Ensure that cooling equipment is either off or set to free cooling. It may have been manually set to continuous operation in the summer.
- Ensure that automatic ventilation is set to control the ventilation on the basis of the outdoor temperature and that the set values and timings are correct. Test also the antifreeze systems and their settings.
The tips were given by Simo Tähtinen, Customer Service Manager at Caverion.