MNL-0408
June 11, 2009
Page 105
9.2.2.2.2
Indoor Installation
The best location to install the compressor unit indoors is against an outside wall with a suitably large
air vent in front of the cooling fan. Additionally, it is necessary to position an exhaust opening in the
opposite wall, close to the ceiling or in the ceiling.
As a basic rule of thumb, the room should be ventilated sufficiently so as to prevent the ambient room
temperature from exceeding 105° F. Additional heat generating equipment or piping should be avoided
or must be well insulated.
9.2.2.2.3
Natural Ventilation
Natural ventilation should only be used up to a maximum drive power of 20 hp. To determine the size
of the required intake and exhaust openings, refer to the following table:
Drive
Hp
Intake and Exhaust Openings Dependent on Room Volume (V) and Height (h)
V = 1750 ft³ h = 6.5 ft
V = 3500 ft³ h = 10 ft
V = 7000 ft³ h = 13 ft
Intake
(ft²)
Exhaust
(ft²)
Intake
(ft²)
Exhaust
(ft²)
Intake
(ft²)
Exhaust
(ft²)
3
1.3
1.1
…
…
…
…
5
3.2
2.7
1.3
1.1
…
…
7.5
4.5
3.8
2.6
2.2
1.3
1.1
10
9.7
8.1
6.5
5.4
2.6
2.2
15
14.5
12.4
9.7
8.1
5.8
4.8
20
20.6
17.2
15.6
12.9
9.7
8.1
