Operating Manual
“Warm N Dry”
www.hvsolutions.com.au
3 of 12
Copyright 2010
What Problems Can Condensation Cause ?
Condensation left untreated can promote mould, mildew growth and damage wood work,
furnishings and clothing. Mould spores are known asthma and allergy triggers. Unpleasant
odours are caused by damp conditions. Damp houses take more energy to heat, feel unhealthy
and are unpleasant to live in. Dust mites thrive in moist conditions.
What Is Condensation Control ?
Constant low volume filtered
fresh
air ventilation
will dilute and expel the internally created
moist air from inside your home. The Home Ventilation System automatically manages the
correct amount of ventilation required.
What Is Heat Recovery Ventilation ?
Your homes roof space is usually warmer than the outside air thanks to the sun. The graph
below shows temperature changes in the roof space during a typical day. The sample was for
the 10/5/08 and shows a minimum temp of 12 and a maximum of 28 degrees. The actual outside
minimum was just 10.8 and a maximum of just 17 on that day (refer Appendix A). The difference
between the roof and outside temperature is considerable and available as free heat by
automatically transferring warmer roof air into the house as required. During summer the heating
facility is turned off.
The period above the red line is the Heat Recovery period and totalled 8 hours on this particular
day. That is 8 hours with the fan operating at maximum capacity (200 litres per second [l/s] -
HVS2). During this period, warm air (19 to 28 degrees) is transferred into the home reducing the
need for other more expensive heating while flooding the house with fresh air as well. Autumn
and spring time will provide the greatest heat gain but even winter months benefit. Refer to the
Technical section for more statistics.
Temperature
0.0
5.0
10.0
15.0
20.0
25.0
30.0
00:00:29
02:30:29
05:00:29
07:30:29
10:00:29
12:30:29
15:00:29
17:30:29
20:00:29
22:30:29
