Heat Recovery Ventilation - NTI Matrix M100 Installation And Operating Instructions Manual

Matrix Installation and Operation Instructions

11.0 HEAT RECOVERY VENTILATION

11.1 Ventilation Needs
With the evolution toward more energy efficient, tighter homes, air quality problems have increased. With less natural ventilation
pollutants such as pet dander, humidity, tobacco smoke and wood ash now become trapped inside the home. Mechanical
ventilation is the process of exhausting the polluted air from the space and replacing it with fresh air from outside. The amount of
ventilation required varies from home to home and can be estimated using one of the following methods:
11.1.1 Room Count Calculation
Living Space
Master Bedroom
With Basement
Without
Basement
Single Bedroom
Living Room
Dining Room
Family Room
Recreational
Room
Other
Kitchen
Bathroom
Laundry Room
Utility Room
Total Ventilation Requirement (sum last column)
11.1.2 Air Change per Hour Method
Total cu.ft x 0.3 / 60 = Total Ventilation Required
Example. A 25' x 40' house with basement
1000 sqft x 8' high x 2(main floor and basement) = 16,000 cu.ft
16,000 x .3 air changes per hour = 4,800 cu.ft/hr
4,800 cu.ft/hr / 60 = 80 cfm
80 cfm is ventilation requirement
Number of
CFM (L/S)
Rooms
x 20 cfm (10 L/s)
x 20 cfm (10 L/s)
x 10 cfm (5 L/s)
x 10 cfm (5 L/s)
x 10 cfm (5 L/s)
x 10 cfm (5 L/s)
x 10 cfm (5 L/s)
x 10 cfm (5 L/s)
x 10 cfm (5 L/s)
x 10 cfm (5 L/s)
x 10 cfm (5 L/s)
CFM Req'd
=
=
=
=
=
=
=
=
=
=
=
=
39