Lifebreath 2500IFD Benutzerhandbuch
3
MAKE UP HEAT REQUIREMENT at 1200 CFM (566L/s)
Nominal
Nominal
Nominal
Outdoor Temp.
kW Req. for
kW Req. for
kW Req. for
C°
F°
20°C (68°F)
25°C (77°F)
30°C (86°F)
Air Delivery
Air Delivery
Air Delivery
0 32
7
10
14
-10 14
10
14
17
-20 -4
12
15
19
-30 -22
15
19
22
-40 -40
17
21
24
Selecting the Correct Size HRV
Commercial and Institutional Requirements
For outdoor air requirements, ASHRAE has produced the Ventilation Standard 62-1989
that is used to determine acceptable ventilation rates. This standard is referenced directly or
used as “Good Engineering Practice” in most Code documents or design criteria.
that is used to determine acceptable ventilation rates. This standard is referenced directly or
used as “Good Engineering Practice” in most Code documents or design criteria.
Small restaurants, Donut Shops and Fast food stores
Seats
40
Employees
5
Total
45
ASHRAE requirement
20 cfm (10L/s) per person
Ventilation required
45 x 20 = 900 cfm (450 L/s)
Bank
Customers
25
Staff
9
Total
34
ASHRAE requirement
20 cfm (10L/s) per person
Ventilation required
34 x 20 = 680 cfm (320 L/s)
Bar or Tavern
Seats
50
Employees
7
Total
57
ASHRAE requirement
30 cfm (15L/s) per person
Ventilation required
57 x 30 = 855 cfm (403 L/s)
Bingo Hall
Customers
180
Staff
20
Total
200
ASHRAE requirement
30 cfm (15L/s) per person
Ventilation required
200 x 30 = 6000 cfm (3000 L/s)
Classroom and School Portables
Seats
29
Teacher
1
Total
30
ASHRAE requirement
15 cfm (7.5L/s) per person
Ventilation required
30 x 15 = 450 cfm (255 L/s)
Print Shop, Duplicating
Square footage of shop
2000 square ft (m
2
)
ASHRAE requirement
0.5 cfm/ft2 (2.5L/s - m
2
)
per person
Ventilation required
2000 x 0.5 = 1000 cfm (500 L/s)
Beauty Salon
Customers
12
Employees
6
Total
18
ASHRAE requirement
25 cfm (12.5L/s) per person
Ventilation required
18 x 25 = 450 cfm (255 L/s)
Swimming Pools
Refer to “Pool” Models Installation Manuals.