Upgrade of GOLD unit at Hovåsskolan in Gothenburg, Sweden
The importance of a good indoor environment in schools
Hovåsskolan is a multi-building school built in 1958 in a scenic environment close to the sea. Many of the typical design elements related to the time of its origin have been retained in the main building as renovations have been carried out. The school was extended in 2003 and a GOLD unit from Swegon was installed to acquire a good indoor environment.
It is incredibly important to offer a good indoor climate in schools since research shows that it has a clear positive impact on both teaching and learning. Several factors related to the indoor environmental quality influence students’ educational accomplishments and ability to concentrate.
A big advantage of doing an upgrade like this is that you can very easily upgrade with other functions such as pressure control. The lifespan of the unit also increases.Emanuel Brunzell, Service Engineer Swegon, comments on benefits with the upgrade.
In the year of 2003 Hovåsskolan installed its GOLD air handling units. At the time, this was a market leading unit that provided the school with optimal indoor environmental quality.
After almost 20 years of service key components needed to be replaced, but spare parts to older units are hard to find and expensive to replace.
Changing the entire air handling unit could be an option but many of our air handling units are in good condition even after a long service life, so refurbishment it is a better alternative.
Thanks to our commitment to our customers, to sustainability and to our everyday purpose we have continued to develop our products and solutions to enable healthy and comfortable indoor environments. This has resulted in a refurb kit for GOLD units, which has now been installed at Hovåsskolan.
The Refurb kit consists of a set of components that we know may need to be exchanged. However, a unit with numerous years of operation should be inspected by a technician or other representative from Swegon. The inspection will likely clear the unit for refurbishment, thanks to its overall good performance, and a complementary set of exchange parts may be recommended.
The update at Hovåsskolan included the standard package covering the controller, hand display, sensors and the motor controls for the fans. Also, the damper actuator and the drive unit on the rotary heat exchanger were replaced. All this gives the unit a significantly longer lifespan since these newly installed parts, unlike the older ones, are in production today.
Refurb kit product sheet
The refurbishment covers much more than the replacement of tangible parts. It is a thorough update of the controls, including an update to the latest software version. Functions that are standard in todays’ brand-new GOLD units are made available also for considerably older versions.
The hand display offers a new, easy to use interface and shows targeted and actual values of the most essential parameters of the indoor climate. The great improvement is that a number of additional important factors also are visualized. By the means of figures, graphs and diagrams the indoor environmental quality may be observed and analysed continuously and over time.
Overall future troubleshooting will be much easier as historic data is saved, stored and easily accessible.
Moreover, the update offers extended functionality and BMS communication, enabling future upgrades and connectivity.
From a sustainability point of view it is not difficult to grasp the savings made with this refurb kit.
However, knowing that an exchange of air handling unit would take a few weeks instead of a couple days, and could possibly entail breaking up the roof to make the actual replacement, it becomes clear that vast savings are made both in terms of time and money.
The customer in this case puts great value in the fact that the ventilation only has been turned off for a few days and school activities has continued as normal while our technician worked on the unit.