IOM 1207-6 • TRAILBLAZER
®
MODEL AGZ CHILLERS
12 www.DaikinApplied.com
Installation and Application Information
Case 5: Pit Installation
Pit installations can cause operating problems resulting from
air recirculation and restriction and require care that sufficient
air clearance is provided, safety requirements are met and
service access is provided. A solid wall surrounding a unit is
substantially a pit and this data should be used.
Steel grating is sometimes used to cover a pit to prevent
accidental falls or trips into the pit. The grating material
and installation design must be strong enough to prevent
such accidents, yet provide abundant open area to avoid
recirculation problems. Have any pit installation reviewed by
the Daikin Applied sales representative prior to installation to
ensure it has sufficient air-flow characteristics and approved by
the installation design engineer to avoid risk of accident.
Models AGZ030-070E:
The Case 5 figures for models AGZ030-070E show adjustment
factors for pit/wall heights of 4 feet, 5 feet, and 6 feet.
Figure 12: Case 5 - Full Load Capacity Reduction
(AGZ030E-070E)
Figure 13: Case 5 - Power Increase (AGZ030-070E)
Figure 14: Case 5 - Pit Installation
Models AGZ075-130E:
The Case 5 figures for models AGZ075-130E show adjustment
factors for pit/wall heights of 5 feet, 6 feet, and 8 feet.
Figure 15: Case 5 - Full Load Capacity Reduction
(AGZ075-130E)
Figure 16: Case 5 - Power Increase (AGZ075-130E)
0.0
1.0
2.0
3.0
4.0
5.0
6.0
0
8
10
12
13
14
%
C
ap
aci
ty
Red
uct
io
n
Depth of Pit / Wall Height (ft)
Full Load Capacity Reduction (AGZ030
-070E)
Distance = 4 ft
Distance = 5 ft
Distance = 6 ft
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
0
8
10
12
13
14
%
P
ow
er
In
cr
ease
Depth of Pit / Wall Height (ft)
Power Increase (AGZ030-070E)
Distance = 4 ft
Distance = 5 ft
Distance = 6 ft
0.0
1.0
2.0
3.0
4.0
5.0
6.0
0
8
10
12
13
14
%
C
ap
aci
ty
Red
uct
io
n
Depth of Pit / Wall Height ft)
Full Load Capacity Reduction (AGZ075
-130E)
Distance = 5 ft
Distance = 6 ft
Distance = 8 ft
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
0
8
10
12
13
14
%
P
ow
er
In
cr
ease
Depth of Pit / Wall Height (ft)
Power Increase (AGZ075-130E)
Distance = 5 ft
Distance = 6 ft
Distance = 8 ft
